Thread Tools |
post #1 of 9Old09-03-2012, 10:35 AM - Thread Starter
AVS Forum Special Member
Location: New England
Mentioned: 1 Post(s)
Quoted: 262 Post(s)
I'm looking for a 5-channel power amp and it looks like the contenders are the Anthem A5, the Parasound A51, or the Acurus A2005. They all are fairly beefy with power in the 200 to 250w per ch range. On paper, the Acurus looks like the best deal, but perhaps there's more than meets the eye. What observations or experiences can you offer?
Sponsored Links | |
AVS Forum Special Member
Location: USA
Mentioned: 2 Post(s)
Quoted: 332 Post(s)
What speakers will you be driving? I have an HCA-1206 (135 watts channel/8 ohms) that I purchased in the late 1990's to drive my fairly efficient Polk RTA-11t speakers and Def-Tech center and surrounds. It was all I could ever have wanted. I enjoyed the sound quality and the amp was bullet-proof.
Recently I replaced my front three speakers with Aerial Acoustics LR5's while still using my Parasound. The Aerials (on paper) are not very efficient at 86db and require a large current amplifier to drive them. If you read the posts at the Aerial owners forum the majority of users feel the need to use mega-amps with 500-1000 watts per channel to get what they claim is the best the Aerials have to offer.
The Aerials are rated at 4 ohm, and, the Parasound has a rated output of only 200 watts per channel into 4 ohms; the minimum as recommended by Aerial. I never felt I was missing anything using the Parasound with the Aerials. However, I eventually gave in to the peer pressure and bought a pre-owned Proceed HPA3 for my Aerials and assigned the Parasound to surround only duties.
To be honest I could tell a small difference in the performance, but, not a significant amount. This small amount could very well be a placebo effect to justify the purchase I had just made. Regardless, I decided to keep the Proceed as I felt there must be some advantage to having the additional headroom available should I ever need it.
In the interest of full disclosure, I never listen at reference levels so I was not asking the Parasound to deliver the goods at such volumes. If that were the case the Parasound may very well have seen its limitations. For my circumstances it was probably adequate even with the Aerials.
I can;t speak for the Anthem or Acurus, but the Parsound is definitely worth consideration. Instead of the New Halo A51 I suggest you look for a used HCA-2205 which specs very similar and can often be found on a popular internet site for around $1,000. Amps have a long life span, and, can be repaired economically if needed. Many say all amps sound the same. I cannot confirm or deny this, but, in my experiences I definitely cannot say the claim is false.
Recently I replaced my front three speakers with Aerial Acoustics LR5's while still using my Parasound. The Aerials (on paper) are not very efficient at 86db and require a large current amplifier to drive them. If you read the posts at the Aerial owners forum the majority of users feel the need to use mega-amps with 500-1000 watts per channel to get what they claim is the best the Aerials have to offer.
The Aerials are rated at 4 ohm, and, the Parasound has a rated output of only 200 watts per channel into 4 ohms; the minimum as recommended by Aerial. I never felt I was missing anything using the Parasound with the Aerials. However, I eventually gave in to the peer pressure and bought a pre-owned Proceed HPA3 for my Aerials and assigned the Parasound to surround only duties.
To be honest I could tell a small difference in the performance, but, not a significant amount. This small amount could very well be a placebo effect to justify the purchase I had just made. Regardless, I decided to keep the Proceed as I felt there must be some advantage to having the additional headroom available should I ever need it.
In the interest of full disclosure, I never listen at reference levels so I was not asking the Parasound to deliver the goods at such volumes. If that were the case the Parasound may very well have seen its limitations. For my circumstances it was probably adequate even with the Aerials.
I can;t speak for the Anthem or Acurus, but the Parsound is definitely worth consideration. Instead of the New Halo A51 I suggest you look for a used HCA-2205 which specs very similar and can often be found on a popular internet site for around $1,000. Amps have a long life span, and, can be repaired economically if needed. Many say all amps sound the same. I cannot confirm or deny this, but, in my experiences I definitely cannot say the claim is false.
Current Equipment: Datasat LS10 w/ Atmos and DIRAC. ATI 6005, AT527NC, Aerial Acoustics LR5's (LCR), SR3's sides, LR3's (rears), Seaton Submersive HP, Marantz VP15s1, 123' diag 16:9 Stewart Cima Neve screen, Oppo BDP-103, Palliser Flicks Theater Seating AC Power: Eaton whole-house surge protector at main panel, three dedicated 20 amp circuits, Surgex XR315 surge protector at equipment rack, Cyberpower 1400VA/900 watt, true sine wave UPS.
Senior Member
Acurus Amp For Sale
Location: 60014
Mentioned: 0 Post(s)
Quoted: 16 Post(s)
Try 'classicaudioparts.com' -this is ATI amplifier's only authorized outlet for B stock, and factory refreshed, amps, with 7year warranties-great deals
Sponsored Links | |
post #4 of 9Old09-03-2012, 05:49 PM - Thread Starter
AVS Forum Special Member
Location: New England
Mentioned: 1 Post(s)
Quoted: 262 Post(s)
I'll be mating the amp to an Audio Pro Avanto 5.0 system. If the ATI mentioned above is related to their AT2005, it appears to fall short of the Acurus in a few respects (although the list price is the same). The Acurus A2005 is THX Ultra2 certified and has an Ethernet control (which could come in handy for various network control options).
Member
Posts: 27
Tagged: 0 Thread(s)
Liked: 10
i have a acurus 200 five home theater amp which is an old mondial. works great. i was noticing the new A2005 acurus amp is thx ultra 2 certified. i am wondering if my year 2000 or so, is thx certified? if so select ? ultra? etc. -- if anyone knows about this older 200 five mondial acurus amp and have any input it will be greatly appreciated
Member
Location: Dallas, Tx
Mentioned: 1 Post(s)
Quoted: 15 Post(s)
moviesoundlover, no, the older Acurus 200X5 that you own is not THX certified. However, that is not a bad thing. It is also not a good thing. That THX certification is, in my opinion, bullocks and means nothing. Absolutely nothing. Your 200X5 is a good amp, I have owned one for a couple years and it is not a bad amp at all. Huge improvement over a receiver's amplifier section.
Member
Location: Dallas, Tx
Mentioned: 1 Post(s)
Quoted: 15 Post(s)
Maybe your best bet is to purchase an ATI 2005 on www.classicaudioparts.com for $2,495 (MSRP is $3,599). http://www.classicaudioparts.com/ind..ock-120-v.html Even though it says it is a 'B Stock' amplifier.trust me, it is NOT a B-Stock amplifier. It is a brand new A-Stock amplifier that is immaculate because it is a brand new amplifier that has never been used, never been out of the box (ie it is NOT B-Stock, it is actually a brand new A-Stock amplifier. It also has the exact same warranty as a quote unquote A-Stock amplifier - 7 years parts and labor through ATI and Mr. Kessler.) But, if you call Classic audio parts and speak to Jeff Hipps of ATI on the phone (Jeff Hipps runs the classic audio parts website / store), there is a very good chance you can get a little more off on the price of the ATI 2005 than $2,495 - you can get it for less than $2,495.
Another GREAT option is to buy the amplifier that is identical in every way, shape and form to an ATI 2007..an Outlaw Audio Model 7700 amplifier. Same (2) 15,000 microfarad 50 Volt caps per channel. Same exact circuit board layout. Same 29 fin heat sink per channel (29 fins, each fin is 6 1/2 inches tall X 1 1/2 inches wide). Same (12) Toshiba Bipolar output transistors per channel. 15 amp circuit breaker on the back. Same exact weight - the ATI 2007 weighs 93 lbs. The Outlaw Audio 7700 weighs..drumroll please...93 lbs. LOL, they are the SAME amplifier. The ATI 2007 uses (2) toroidal transformers, a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse. The Outlaw Audio 7700 also uses (2) toroidal transformers, drumroll please LOL... a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse.
Outlaw Audio 7700 is $2,149 A-Stock on their website.. www.outlawaudio.com $1,979 for a 'B-Stock' although again, their B-Stock is not actually a B-Stock but a Brand new, never used, never been out of the box A-Stock unit. However, for the last (5) Christmases or so, Outlaw Audio has run sales on their Model 7700 and 7900 amplifiers. Last Christmas, Christmas of 2015, they had a combo deal of a Marantz AV7702 MK I preamp and a Model 7700 for $2,400 DELIVERED. And they also had a combo deal of a Marantz AV7702 MK I preamp and a Model 7900 amplifier for $3,400 DELIVERED. As they currently have quite a few Marantz AV7702 MK II (TWO) preamps in stock at outlaw audio, I would not be surprised AT ALL if in maybe 3 or 4 more days, Outlaw Audio runs a Christmas sale of a essentially the exact same combo they ran last Christmas...a Marantz AV7702 MK II (TWO) preamp and a Model 7700 amplifier for $2,400 DELIVERED. That is an outstanding deal, you cannot beat that deal. Basically, you are getting a brand new Marantz AV7702 MK II for $1,000 and a Brand New Model 7700 amplifier for $1,400 !! Great deal !! I might even get in on that combo deal myself, and sell a couple of my Aragon amplifiers to clear the way for a Model 7700 amplifier, or perhaps even a Model 7900 amplifier.
Hope this helps.
The actual power output of the Model 7500 amplifier (5 channel version of the 7700, everything about the 7500 is the same as the 7700 except it only has 5 channels instead of 7 channels, and the toroids are both smaller in the 7500 than in the 7700..7700 has a 1.025 KvA and 1.23 KvA transformers whereas the 7500 has smaller .80 KvA and 1.025 KvA transformers..and the Model 7500 weighed 80 lbs whereas the 7700 weighs 93 lbs.
Anyways, the Outlaw Audio 7500, like every other Outlaw Audio and ATI amplifier, is E-X-T-R-E-M-E-L-Y underrated. Rated output of the 7500 (and 7700) is 200 watts RMS per channel all channels driven into 8 ohms 20Hz to 20K Hz with less than .03% THD + noise and 300 watts RMS per channel all channels driven into 4 ohms. However, the actual power output as measured by Sound and Vision Magazine was:
http://www.soundandvision.com/conten..ZHarkdi2k06.97
This graph shows that the 7500’s left channel, with two channels driving 8-ohm loads continuously at 1 kHz, reached 0.1% distortion at 284.9 watts and 1% distortion at 342.3 watts. Into 4 ohms, the amplifier reached 0.1% distortion at 447.6 watts and 1% distortion at 492.8 watts.
With five channels driven continuously into 8-ohm loads, the AVR reached 0.1% distortion at 260.1 watts and 1% distortion at 301.1 watts. The manufacturer’s stated distortion of 0.03% was reached at 238.7 watts, which is actually higher than the spec'd 200Wpc at that distortion level with all channels driven.
So as a stereo amplifier, the 7500 amplifier does 342 Watts RMS X 2 channels into 8 ohms and 492 Watts RMS X 2 channels into 4 ohms. Just a tiny bit UNDERRATED I wold say!! The 7700 should put out very similar numbers as the 7500, as the only difference is the 7700 (ie the ATI 2007) uses the previously mentioned larger toroidal transformers than the 7500 (ie the ATI 2005) uses.
If you want to see several pictures of the internals (the guts) of the ATI 2007 and several pictures of the internals of the Outlaw Audio 7700 to prove to you the two amplifiers are in fact 100% identical, just send me your email address and I will be happy to email you pictures of the internals of both the ATI 2007 and the Outlaw Audio 7700. You will see the 2 amps are identical. Both are great amps, and whether you purchase the ATI or the Outlaw Audio, you will love both amps. Jeff Hipps is an incredibly nice man to talk to over the phone with as well, as are the engineers at Outlaw Audio in Massachusetts.
Another GREAT option is to buy the amplifier that is identical in every way, shape and form to an ATI 2007..an Outlaw Audio Model 7700 amplifier. Same (2) 15,000 microfarad 50 Volt caps per channel. Same exact circuit board layout. Same 29 fin heat sink per channel (29 fins, each fin is 6 1/2 inches tall X 1 1/2 inches wide). Same (12) Toshiba Bipolar output transistors per channel. 15 amp circuit breaker on the back. Same exact weight - the ATI 2007 weighs 93 lbs. The Outlaw Audio 7700 weighs..drumroll please...93 lbs. LOL, they are the SAME amplifier. The ATI 2007 uses (2) toroidal transformers, a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse. The Outlaw Audio 7700 also uses (2) toroidal transformers, drumroll please LOL... a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse.
Outlaw Audio 7700 is $2,149 A-Stock on their website.. www.outlawaudio.com $1,979 for a 'B-Stock' although again, their B-Stock is not actually a B-Stock but a Brand new, never used, never been out of the box A-Stock unit. However, for the last (5) Christmases or so, Outlaw Audio has run sales on their Model 7700 and 7900 amplifiers. Last Christmas, Christmas of 2015, they had a combo deal of a Marantz AV7702 MK I preamp and a Model 7700 for $2,400 DELIVERED. And they also had a combo deal of a Marantz AV7702 MK I preamp and a Model 7900 amplifier for $3,400 DELIVERED. As they currently have quite a few Marantz AV7702 MK II (TWO) preamps in stock at outlaw audio, I would not be surprised AT ALL if in maybe 3 or 4 more days, Outlaw Audio runs a Christmas sale of a essentially the exact same combo they ran last Christmas...a Marantz AV7702 MK II (TWO) preamp and a Model 7700 amplifier for $2,400 DELIVERED. That is an outstanding deal, you cannot beat that deal. Basically, you are getting a brand new Marantz AV7702 MK II for $1,000 and a Brand New Model 7700 amplifier for $1,400 !! Great deal !! I might even get in on that combo deal myself, and sell a couple of my Aragon amplifiers to clear the way for a Model 7700 amplifier, or perhaps even a Model 7900 amplifier.
Hope this helps.
The actual power output of the Model 7500 amplifier (5 channel version of the 7700, everything about the 7500 is the same as the 7700 except it only has 5 channels instead of 7 channels, and the toroids are both smaller in the 7500 than in the 7700..7700 has a 1.025 KvA and 1.23 KvA transformers whereas the 7500 has smaller .80 KvA and 1.025 KvA transformers..and the Model 7500 weighed 80 lbs whereas the 7700 weighs 93 lbs.
Anyways, the Outlaw Audio 7500, like every other Outlaw Audio and ATI amplifier, is E-X-T-R-E-M-E-L-Y underrated. Rated output of the 7500 (and 7700) is 200 watts RMS per channel all channels driven into 8 ohms 20Hz to 20K Hz with less than .03% THD + noise and 300 watts RMS per channel all channels driven into 4 ohms. However, the actual power output as measured by Sound and Vision Magazine was:
http://www.soundandvision.com/conten..ZHarkdi2k06.97
This graph shows that the 7500’s left channel, with two channels driving 8-ohm loads continuously at 1 kHz, reached 0.1% distortion at 284.9 watts and 1% distortion at 342.3 watts. Into 4 ohms, the amplifier reached 0.1% distortion at 447.6 watts and 1% distortion at 492.8 watts.
With five channels driven continuously into 8-ohm loads, the AVR reached 0.1% distortion at 260.1 watts and 1% distortion at 301.1 watts. The manufacturer’s stated distortion of 0.03% was reached at 238.7 watts, which is actually higher than the spec'd 200Wpc at that distortion level with all channels driven.
So as a stereo amplifier, the 7500 amplifier does 342 Watts RMS X 2 channels into 8 ohms and 492 Watts RMS X 2 channels into 4 ohms. Just a tiny bit UNDERRATED I wold say!! The 7700 should put out very similar numbers as the 7500, as the only difference is the 7700 (ie the ATI 2007) uses the previously mentioned larger toroidal transformers than the 7500 (ie the ATI 2005) uses.
If you want to see several pictures of the internals (the guts) of the ATI 2007 and several pictures of the internals of the Outlaw Audio 7700 to prove to you the two amplifiers are in fact 100% identical, just send me your email address and I will be happy to email you pictures of the internals of both the ATI 2007 and the Outlaw Audio 7700. You will see the 2 amps are identical. Both are great amps, and whether you purchase the ATI or the Outlaw Audio, you will love both amps. Jeff Hipps is an incredibly nice man to talk to over the phone with as well, as are the engineers at Outlaw Audio in Massachusetts.
Member
Posts: 80
Tagged: 0 Thread(s)
Liked: 7
Originally Posted by clydetheglide79124
Maybe your best bet is to purchase an ATI 2005 on www.classicaudioparts.com for $2,495 (MSRP is $3,599). http://www.classicaudioparts.com/ind..ock-120-v.html Even though it says it is a 'B Stock' amplifier.trust me, it is NOT a B-Stock amplifier. It is a brand new A-Stock amplifier that is immaculate because it is a brand new amplifier that has never been used, never been out of the box (ie it is NOT B-Stock, it is actually a brand new A-Stock amplifier. It also has the exact same warranty as a quote unquote A-Stock amplifier - 7 years parts and labor through ATI and Mr. Kessler.) But, if you call Classic audio parts and speak to Jeff Hipps of ATI on the phone (Jeff Hipps runs the classic audio parts website / store), there is a very good chance you can get a little more off on the price of the ATI 2005 than $2,495 - you can get it for less than $2,495.
Another GREAT option is to buy the amplifier that is identical in every way, shape and form to an ATI 2007..an Outlaw Audio Model 7700 amplifier. Same (2) 15,000 microfarad 50 Volt caps per channel. Same exact circuit board layout. Same 29 fin heat sink per channel (29 fins, each fin is 6 1/2 inches tall X 1 1/2 inches wide). Same (12) Toshiba Bipolar output transistors per channel. 15 amp circuit breaker on the back. Same exact weight - the ATI 2007 weighs 93 lbs. The Outlaw Audio 7700 weighs..drumroll please...93 lbs. LOL, they are the SAME amplifier. The ATI 2007 uses (2) toroidal transformers, a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse. The Outlaw Audio 7700 also uses (2) toroidal transformers, drumroll please LOL... a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse.
Outlaw Audio 7700 is $2,149 A-Stock on their website.. www.outlawaudio.com $1,979 for a 'B-Stock' although again, their B-Stock is not actually a B-Stock but a Brand new, never used, never been out of the box A-Stock unit. However, for the last (5) Christmases or so, Outlaw Audio has run sales on their Model 7700 and 7900 amplifiers. Last Christmas, Christmas of 2015, they had a combo deal of a Marantz AV7702 MK I preamp and a Model 7700 for $2,400 DELIVERED. And they also had a combo deal of a Marantz AV7702 MK I preamp and a Model 7900 amplifier for $3,400 DELIVERED. As they currently have quite a few Marantz AV7702 MK II (TWO) preamps in stock at outlaw audio, I would not be surprised AT ALL if in maybe 3 or 4 more days, Outlaw Audio runs a Christmas sale of a essentially the exact same combo they ran last Christmas...a Marantz AV7702 MK II (TWO) preamp and a Model 7700 amplifier for $2,400 DELIVERED. That is an outstanding deal, you cannot beat that deal. Basically, you are getting a brand new Marantz AV7702 MK II for $1,000 and a Brand New Model 7700 amplifier for $1,400 !! Great deal !! I might even get in on that combo deal myself, and sell a couple of my Aragon amplifiers to clear the way for a Model 7700 amplifier, or perhaps even a Model 7900 amplifier.
Hope this helps.
The actual power output of the Model 7500 amplifier (5 channel version of the 7700, everything about the 7500 is the same as the 7700 except it only has 5 channels instead of 7 channels, and the toroids are both smaller in the 7500 than in the 7700..7700 has a 1.025 KvA and 1.23 KvA transformers whereas the 7500 has smaller .80 KvA and 1.025 KvA transformers..and the Model 7500 weighed 80 lbs whereas the 7700 weighs 93 lbs.
Anyways, the Outlaw Audio 7500, like every other Outlaw Audio and ATI amplifier, is E-X-T-R-E-M-E-L-Y underrated. Rated output of the 7500 (and 7700) is 200 watts RMS per channel all channels driven into 8 ohms 20Hz to 20K Hz with less than .03% THD + noise and 300 watts RMS per channel all channels driven into 4 ohms. However, the actual power output as measured by Sound and Vision Magazine was:
http://www.soundandvision.com/conten..ZHarkdi2k06.97
This graph shows that the 7500’s left channel, with two channels driving 8-ohm loads continuously at 1 kHz, reached 0.1% distortion at 284.9 watts and 1% distortion at 342.3 watts. Into 4 ohms, the amplifier reached 0.1% distortion at 447.6 watts and 1% distortion at 492.8 watts.
With five channels driven continuously into 8-ohm loads, the AVR reached 0.1% distortion at 260.1 watts and 1% distortion at 301.1 watts. The manufacturer’s stated distortion of 0.03% was reached at 238.7 watts, which is actually higher than the spec'd 200Wpc at that distortion level with all channels driven.
So as a stereo amplifier, the 7500 amplifier does 342 Watts RMS X 2 channels into 8 ohms and 492 Watts RMS X 2 channels into 4 ohms. Just a tiny bit UNDERRATED I wold say!! The 7700 should put out very similar numbers as the 7500, as the only difference is the 7700 (ie the ATI 2007) uses the previously mentioned larger toroidal transformers than the 7500 (ie the ATI 2005) uses.
If you want to see several pictures of the internals (the guts) of the ATI 2007 and several pictures of the internals of the Outlaw Audio 7700 to prove to you the two amplifiers are in fact 100% identical, just send me your email address and I will be happy to email you pictures of the internals of both the ATI 2007 and the Outlaw Audio 7700. You will see the 2 amps are identical. Both are great amps, and whether you purchase the ATI or the Outlaw Audio, you will love both amps. Jeff Hipps is an incredibly nice man to talk to over the phone with as well, as are the engineers at Outlaw Audio in Massachusetts.
Whats your opinion on the ATI 4000 and 6000 series? Another GREAT option is to buy the amplifier that is identical in every way, shape and form to an ATI 2007..an Outlaw Audio Model 7700 amplifier. Same (2) 15,000 microfarad 50 Volt caps per channel. Same exact circuit board layout. Same 29 fin heat sink per channel (29 fins, each fin is 6 1/2 inches tall X 1 1/2 inches wide). Same (12) Toshiba Bipolar output transistors per channel. 15 amp circuit breaker on the back. Same exact weight - the ATI 2007 weighs 93 lbs. The Outlaw Audio 7700 weighs..drumroll please...93 lbs. LOL, they are the SAME amplifier. The ATI 2007 uses (2) toroidal transformers, a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse. The Outlaw Audio 7700 also uses (2) toroidal transformers, drumroll please LOL... a 1.025 KvA and a 1.23 KvA transformer, manufactured by ATI in their CA warehouse.
Outlaw Audio 7700 is $2,149 A-Stock on their website.. www.outlawaudio.com $1,979 for a 'B-Stock' although again, their B-Stock is not actually a B-Stock but a Brand new, never used, never been out of the box A-Stock unit. However, for the last (5) Christmases or so, Outlaw Audio has run sales on their Model 7700 and 7900 amplifiers. Last Christmas, Christmas of 2015, they had a combo deal of a Marantz AV7702 MK I preamp and a Model 7700 for $2,400 DELIVERED. And they also had a combo deal of a Marantz AV7702 MK I preamp and a Model 7900 amplifier for $3,400 DELIVERED. As they currently have quite a few Marantz AV7702 MK II (TWO) preamps in stock at outlaw audio, I would not be surprised AT ALL if in maybe 3 or 4 more days, Outlaw Audio runs a Christmas sale of a essentially the exact same combo they ran last Christmas...a Marantz AV7702 MK II (TWO) preamp and a Model 7700 amplifier for $2,400 DELIVERED. That is an outstanding deal, you cannot beat that deal. Basically, you are getting a brand new Marantz AV7702 MK II for $1,000 and a Brand New Model 7700 amplifier for $1,400 !! Great deal !! I might even get in on that combo deal myself, and sell a couple of my Aragon amplifiers to clear the way for a Model 7700 amplifier, or perhaps even a Model 7900 amplifier.
Hope this helps.
The actual power output of the Model 7500 amplifier (5 channel version of the 7700, everything about the 7500 is the same as the 7700 except it only has 5 channels instead of 7 channels, and the toroids are both smaller in the 7500 than in the 7700..7700 has a 1.025 KvA and 1.23 KvA transformers whereas the 7500 has smaller .80 KvA and 1.025 KvA transformers..and the Model 7500 weighed 80 lbs whereas the 7700 weighs 93 lbs.
Anyways, the Outlaw Audio 7500, like every other Outlaw Audio and ATI amplifier, is E-X-T-R-E-M-E-L-Y underrated. Rated output of the 7500 (and 7700) is 200 watts RMS per channel all channels driven into 8 ohms 20Hz to 20K Hz with less than .03% THD + noise and 300 watts RMS per channel all channels driven into 4 ohms. However, the actual power output as measured by Sound and Vision Magazine was:
http://www.soundandvision.com/conten..ZHarkdi2k06.97
This graph shows that the 7500’s left channel, with two channels driving 8-ohm loads continuously at 1 kHz, reached 0.1% distortion at 284.9 watts and 1% distortion at 342.3 watts. Into 4 ohms, the amplifier reached 0.1% distortion at 447.6 watts and 1% distortion at 492.8 watts.
With five channels driven continuously into 8-ohm loads, the AVR reached 0.1% distortion at 260.1 watts and 1% distortion at 301.1 watts. The manufacturer’s stated distortion of 0.03% was reached at 238.7 watts, which is actually higher than the spec'd 200Wpc at that distortion level with all channels driven.
So as a stereo amplifier, the 7500 amplifier does 342 Watts RMS X 2 channels into 8 ohms and 492 Watts RMS X 2 channels into 4 ohms. Just a tiny bit UNDERRATED I wold say!! The 7700 should put out very similar numbers as the 7500, as the only difference is the 7700 (ie the ATI 2007) uses the previously mentioned larger toroidal transformers than the 7500 (ie the ATI 2005) uses.
If you want to see several pictures of the internals (the guts) of the ATI 2007 and several pictures of the internals of the Outlaw Audio 7700 to prove to you the two amplifiers are in fact 100% identical, just send me your email address and I will be happy to email you pictures of the internals of both the ATI 2007 and the Outlaw Audio 7700. You will see the 2 amps are identical. Both are great amps, and whether you purchase the ATI or the Outlaw Audio, you will love both amps. Jeff Hipps is an incredibly nice man to talk to over the phone with as well, as are the engineers at Outlaw Audio in Massachusetts.
AVS Forum Special Member
Location: Delaware
Mentioned: 14 Post(s)
Quoted: 804 Post(s)
^^^
Biggest advantage is lower noise floor by about 5 dB.
ATI is a very good amp.
Biggest advantage is lower noise floor by about 5 dB.
ATI is a very good amp.
Sponsored Links | |
Posting Rules | |
You may not post replies You may not edit your posts Smilies are On HTML code is Off Pingbacks are Off |
view our sponsors showcase AVS Forum is proudly sponsored by
I have an Acurus A250 in my 2ch system. These amps are known for being able to continue playing for about 45 seconds if you turn the amp off before the source (I think it has something to do with the capacitors storing current in reserve and taking time to fully discharge). It's not a flaw, just the way the amps were designed. I have always known this and usually just shut off the CD player first.
However, tonight I noticed that after I shut down the amp, there is a faint, but audible sound coming from the amp through the speakers about 45 seconds after turn off. It's a fairly high pitched sound coming from the tweeter that lasts about 15 seconds until it just fades away. I'm no electrical engineer, but it sounds like the current draining out of the caps (similar to a bottle rocket fading into the distance).
It is possible that it has done this all along, but I usually walk out of the room after I shut it down - and it's fairly quiet, so maybe I just never heard it before. However, I don't think it usually makes this noise.
Does anyone have any insights as to whether the noise is indicative of a problem - either a present or future one? Does this happen to anyone else who currently owns an Acurus amp? Would you be willing to test yours and check it out?
Thanks
However, tonight I noticed that after I shut down the amp, there is a faint, but audible sound coming from the amp through the speakers about 45 seconds after turn off. It's a fairly high pitched sound coming from the tweeter that lasts about 15 seconds until it just fades away. I'm no electrical engineer, but it sounds like the current draining out of the caps (similar to a bottle rocket fading into the distance).
It is possible that it has done this all along, but I usually walk out of the room after I shut it down - and it's fairly quiet, so maybe I just never heard it before. However, I don't think it usually makes this noise.
Does anyone have any insights as to whether the noise is indicative of a problem - either a present or future one? Does this happen to anyone else who currently owns an Acurus amp? Would you be willing to test yours and check it out?
Thanks
Folks in the custom installation business, or the general public for that matter, may not recognize the name Indy Audio Labs, but its brands are recognizable to home theater enthusiasts going back to the 1990s.
Dark souls 1 magic npc. During the days of the Clinton administration, Acurus and Aragon developed a large following within the theater community that loved the brands’ combination of build quality, value and performance. The brands were so revered that Klipsch acquired them back in 2001.
Shortly thereafter, however, Klipsch shut the brands down in 2005. Fast forward to 2009 and former Klipsch engineers Rick Santiago and Ted Moore founded Indy Audio Labs after purchasing Acurus and Aragon from the audio behemoth. Free download film indonesia dilan. In late 2011, Indy Audio Labs introduced several products bearing the newly acquired brands’ logos.
After meeting Santiago at CEDIA Expo 2011 in Indy Audio Labs’ hometown, the company’s co-founder sent CE Pro an Acurus A2005 five-channel amplifier ($3,500) to evaluate.
Features
The A2005 is said to provide amplification that delivers clean, dynamic audio for high-performance 5.1 home theaters. Features include a high-current power supply that’s capable of producing 18 amps during peak bursts into load impedances as low as 2.2 ohms to conform to THX Ultra2 specifications. The Class A/B design is rated to deliver 200 watts into an 8-ohm load and 300 watts into 4-ohm load. The amp also includes network interface options, as well as RS-232 and 12-volt triggers. The 6U-high amp can be rack mounted, and it weighs almost 50 pounds.
Setup
For the most part, I used the A2005 in a two-channel system, which included a Bryston preamp and other components from Parasound Halo and NAD plus a Thorens turntable. I used Straight Wire cables and a pair of PSB T2 speakers to round out my two-channel listening. In my theater configuration, I used the A2005 with an Integra preamplifier/processor, Pioneer Elite BD player, HD cable box, Apple TV, Monitor Audio Platinum speakers and AudioQuest cables.
The installation in both systems was uneventful. I will point out, however, that due to the lack of real estate on the rear-panel the company staggers the arrangement of the amp’s binding posts and because of this, the binding posts that were positioned lower on the amp’s rear panel proved to be difficult for me to insert my rear surround speaker cables’ spade terminations (I placed the amp on the bottom shelf of my equipment cabinet and the binding posts’ slots are on the bottom of the thumb screw assembly). The amp’s RCA inputs were easy to access though, and I should also note the amp offers no provisions for XLR cables.
Performance
Out of the box the amp sounded good. After a 100-plus hours’ break-in period, I was pleasantly surprised by the amp’s ease of listening and seemingly effortless ability to deliver power on demand.
On two-channel content such as vinyl versions of Journey’s Escape and Rush’s Permanent Waves albums, the Acurus amp filled my room with sound that was highlighted by lots of bottom end and rich midrange. I loved how the amp fleshed out Geddy Lee’s bass playing by adding texture and dimension. With the Journey album, Steve Perry’s voice bloomed within the soundstage to add a sense of realism to the recording’s upper midrange and lower treble. With home theater content like Bolt on Blu-ray, I thought the amp didn’t quite have the same transient snap of the Bryston it replaced or dead silent noise floor, but in fairness Bryston is priced about 40 percent higher than Acurus.
A major culprit that affected the noise floor was a ground loop that I eventually eliminated using a Tripp Lite IS1000 Isolation transformer. My Bryston’s balanced circuitry and connections aren’t affected by the loop, but with all of that said I thought the A2005 delivered many of the same quality attributes I heard in my two-channel system.
Value
Considering I’m comparing the A2005 to one of the best home theater amps on the market, the Bryston 9B, it more than holds its own at 60 percent of the price, speaking to the value the Acurus theater amp offers.
The Acurus product line could serve dealers well as we continue to distance ourselves from the economic failings of past years and move into a new era. With a product line that includes the two-channel A2002, the five-channel A2005 and the seven-channel A2007, Acurus is well positioned to provide installers step-up solutions that deliver more real-world power and finesse than what the A/V receiver category provides.
Expect Acurus in the near future to introduce a companion home theater processor to add further value to its family of products. In the meantime, dealers shouldn’t be afraid of using the amps with the pre-outs of a receiver to provide their clients an audio solution that delivers the goods for a short amount of money.
Acurus A250 Power Amplifier and Acurus Act 3 Preamp Processor DTS By MONDIAL !!
Pre-OwnedFrom United Statesor Best OfferEMOTIVA BASX A-150 STEREO POWER AMPLIFIER
Pre-OwnedTime left3d 2h left0 bidsFrom United StatesFinished Pass A30 Mos Single-ended Class A Power Amplifier Mono 30W HiFi Amp
Brand NewFrom ChinaBuy It Now31 WatchingSumo Class A/B Stereo Power Amplifier Polaris Model Rack ears inc.
Pre-OwnedFrom United Statesor Best OfferCustoms services and international tracking providedDayton Audio APA150 150W Power Amplifier -- new in box
Brand NewTime left5d 21h left0 bidsFrom United States10W Bluetooth Digital HIFI Power Amplifier Board for USB SD Card Singing Machine
Brand NewTime left5d 8h left0 bidsFrom ChinaFree International ShippingDayton Audio APA150 150W Power Amplifier
Brand NewTop Rated PlusList price: Previous Price$209.99From United StatesCustoms services and international tracking provided+$40.10 shipping19% offDayton Audio APA150 150W Power Amplifier
Brand NewFrom United Statesor Best OfferCustoms services and international tracking providedRARE CLASSE AUDIO CAV 500 CAV500 POWER AMPLIFIER W/ ORIGINAL BOX
Pre-OwnedFrom United Statesor Best Offer62 Sold62 SoldEBB 150 Mosfet Power Amplifier Module 125W RMS Audio Disco PA
Brand NewFrom United KingdomBuy It Now10% offTAS5613 Bluetooth Class D Power Amplifier HIFI Mini 2.1 AMP 150W + 75Wx2
Brand NewFrom ChinaWas: Previous Price$45.99+$9.99 shipping10% offNew 2 Channel L150W 200W MOSFET IRFP250*12 FET Power amplifier finished board
Brand NewFrom ChinaBuy It Now15 WatchingNew ListingRare Vintage Technics SU-V8 Stereo Integrated Amplifier 105 WPC - Class A Power!
Pre-OwnedFrom United StatesBuy It NowCustoms services and international tracking providedCAMBRIDGE AUDIO A1 V3.0 150 W AMPLIFIER SEPARATES STEREO HI-FI AUDIO SOUND
Pre-OwnedFrom United KingdomBuy It NowCustoms services and international tracking providedEPISODE EA-AMP-2D-150A 150Wx2 Power Amplifier Amp No Remote Works Great
Pre-OwnedFrom United Statesor Best Offer10000UF*6 120A DC Power Rectifier&Regulated Board DC Power Supply For Amplifier
Brand NewFrom ChinaBuy It Now9 WatchingAssembeld UPC1342V+NJW0302G/NJW0281G Stereo class A Power amplifier board 150W*2
Brand NewFrom ChinaBuy It NowFree Returns500W MA-150 DC9-14V 2-CH Mini Hi-Fi Stereo Audio Amplifier Amp Subwoofe ZZQ
Brand NewFrom ChinaBuy It NowFinished ZERO-ZONE Stereo PASS-AM V15 10W + 10W Class A power amplifier L5-13
Brand NewFrom ChinaBuy It Now50 Sold50 SoldAudio Research D-100A Stereo Power Amplifier; D100A
Pre-OwnedFrom United StatesBuy It NowCustoms services and international tracking provided15% off