Sub died (Athena AS-P400) Can anyone help troubleshoot it? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 3 Old 11-16-2014, 03:10 AM - Thread Starter
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Exclamation Sub died (Athena AS-P400) Can anyone help troubleshoot it?

Hello

Sub is around 10 years old, Athena AS-P400 10" driver, 100W mossfet amp.
Denon AVR 1712 receiver connected using an RCA Low Level Sub In cable.

I've had a problem with this sub a few years ago, it stopped outputting any sound, if I remember correctly...
I paid $100 for parts/labour, the guy might've changed a switch? I can't remember...
The sub worked OK since that repair (maybe 5 years ago) until a couple of days ago when while watching a movie,
it suddenly made a loud popping noise (during a bass intensive scene) and the volume dropped to barely audible.
It looks like there's still power going to it, the LED is on, but I can barely hear it, even at max volume.

I unplugged the sub from power for a few minutes, I switched the Low Level RCA from "sub in" to "direct in",
Checked settings on my receiver, still very low sound.

I removed the amp to take a look at the fuse, it looks OK...
Capacitors also appear to be OK (not blown or leaking).
I see some yellow spots around power and fuse connectors on the board, not sure if that is corrosion and
if it'd affect the amp?
Some pics attached.

I have a volt meter and am handy with a soldering iron, but I need help with further testing
Can anyone help with troubleshooting?
Any help would be greatly appreciated!

http://www.hometheatersound.com/equi...ion_asp400.htm
Athena AS-P400
  • Front-mounted controls
  • Auto on/off (with dual-LED indicator)
  • Adjustable bass level
  • 10" injection-molded polypropylene driver (with rubber surround)
  • 100W MOSFET amplifier
  • Front-ported design
  • High-level (speaker) connections
  • Mono line-level input
  • Direct Input to bypass crossover
  • Internal protection circuitry
  • Anti-clipping circuitry

Thanks guys!

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post #2 of 3 Old 11-16-2014, 01:03 PM
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Try getting help here.

http://repairalmostanything.com/

The member mastertech is super good at guiding you to trouble shooting
if your handy with a soldering iron and a Multi meter.

nashou
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post #3 of 3 Old 11-16-2014, 05:11 PM - Thread Starter
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Quote:
Originally Posted by nashou66 View Post
Try getting help here.

http://repairalmostanything.com/

The member mastertech is super good at guiding you to trouble shooting
if your handy with a soldering iron and a Multi meter.

nashou
Thank you nashou, I will try there as well.
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