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March 15, 2021, 03:03 PM #1Junior Member
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- Mar 2021
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Plate power amp out of my Proficient Audio S12 powered subwoofer - need a little help.....
Hi all, I have a Proficient Audio S12 powered subwoofer with a 250watt plate power amp inside it. One section of the power supply within the power amp seems to have self destructed. I realize these subwoofers are quite old now, but, I really would like to get a copy of the schematic if possible!!! I've already called Proficient Audio and talked with their tech support. He went to the engineers there and said that because the company had change hands a couple times (now owned by Nortek Security and Control) they had "lost" the schematics for some of their products. So, I'm SOL there. Does anyone know where/how I can get a copy of the schematic for it?? I know I can go to Parts Express and get another 250 watt plate amp (Dayton audio) for about $175 or so, but I really want to give repairing my original amp a shot. Thanks!!
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March 18, 2021, 09:52 AM #2Senior Member
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- Mar 2018
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- 435
Re: Plate power amp out of my Proficient Audio S12 powered subwoofer - need a little help.....
I wish I could help with a schematic but I can't. However, can you identify the components on the board and replace them with new ones of equal value? The only problem with that is there could be other components that look ok but could be fried. I repaired an old Advent receiver once just by replacing the obviously burnt up components and it worked great. I also tried to fix an old ESS preamp and it wound up nearly on fire. With all that said $175 seems cheap to replace it. Good luck.
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March 19, 2021, 01:22 PM #3Senior Member
- Join Date
- Apr 2013
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- The Neutral Zone
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- 560
Re: Plate power amp out of my Proficient Audio S12 powered subwoofer - need a little help.....
Usually plate amps fail because they vibrate apart. Usually it’s large parts with large moment arms like big electrolytic capacitors. This can in turn cause other failures in a catastrophic ’waterfall’ scenario. Even without a schematic you can start checking the output devices and work backwards from there. Good luck!
Tom
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AudioShark forum is a leading forum site for High End Audio Discussion, Stereo System Discussion, Home Theater System Discussion, Best Home Stereo System Discussion, Home Theater Installation Discussion etc.
The AudioShark forum was created for sharing the passion of high-end Audio. We have Audiophiles from all over the world participating and sharing their knowledge. From novice to experts, you will find a friendly environment for discussing about High End Audio, Stereo System, Home Theater System, Home Stereo System, Home Theater Installation, Amplifiers, Speakers, Subwoofers, Integrated System, Acoustic treatments & Digital Room Corrections and many more.
At AudioShark, we also have incorporated an exciting Marketplace where members can peruse terrific buys on used gear, as well as meet dealers and discuss the purchase of new gear.
We are as crazy about this hobby as you are! So come on in and join us! Audioshark.org the Friendliest Audio Forum!
Industry Participation Disclosure : The owner and administrator of Audioshark is the owner of Suncoast Audio LLC in Sarasota Florida. Suncoast Audio has a full brick and mortar presence in Sarasota with several great show rooms with many world class brands. More information can be found at http://www.suncoastaudio.com
Audioshark is a community of like minded individuals. Audioshark welcomes participation from all manufacturers and owners of all brands and products. It is our belief that online forums provide a community of like minded audiophiles and music lovers to encourage the growth of this wonderful hobby.
Sincerely,
The Audioshark.org Team
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