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To: PE Tech
I have two SPA Dayton 500 Subwoofer plate amplifiers, each in a different subwoofers for different purposes in different systems. Now the 2nd Dayton 500 plate amp is doing this same consistent low-volume thud-pop putt putt putt kinda sound every 10 seconds. And super fast putt putt putt sound about 6-7 times on startup power-on. Think of it as slow motor boating every 10 seconds. I disconnected the RCA input cables and the amps will do this just sitting there powered on with no input signal connected. It's not my preamp causing this, ruled that out already.
Amp#1:
The first plate-amp unit started this behavior every 10 seconds (very low volume Putt..... Putt...Putt....) while playing. Then noticed the same on amp startup at play time, (Putt.Putt.Putt) real fast 5-6 times and it stops after it gets charted up, then it goes back to putt putt putt every 10 seconds. Its almost like a capacitor or transistor or something may be going bad inside these plate amps. Not sure what to check for. If I switch the phase switch to Rev, the amp goes putt putt put real fast 10 times like a cap discharges. Its then stops for a while, a few minutes later the putt putt putt sound starts all over again every 10 seconds.
Amp#2:
Now the second Dayton 500 sub plate amp in my other home theater system is doing the same.
Age: these were both brand new plate amps from PE about 1.5-2 years old. Always on StandBy. Used moderately. Have a Richard Gray 1200 Powerstation for power regulation and protection. No issues there.
What to check with a multi-meter inside the Dayton 500 amps?
Thanks in advance if you could look through your knowledge base for tips on what to check. Would prefer to repair these vs. replacing them unless you want me to send them back and you can send me new plate amps. My prior Rythmik Audio amps did not do this in 10 years of use. Hopefully something simple going bad inside. I did read DA puts the caps "too close" to each other whatever that means in terms of design issues, I don't know. Hopefully you do know what to check inside and a few parts can be replaced to fix it. What Say You "Parts Express"
???
I have two SPA Dayton 500 Subwoofer plate amplifiers, each in a different subwoofers for different purposes in different systems. Now the 2nd Dayton 500 plate amp is doing this same consistent low-volume thud-pop putt putt putt kinda sound every 10 seconds. And super fast putt putt putt sound about 6-7 times on startup power-on. Think of it as slow motor boating every 10 seconds. I disconnected the RCA input cables and the amps will do this just sitting there powered on with no input signal connected. It's not my preamp causing this, ruled that out already.
Amp#1:
The first plate-amp unit started this behavior every 10 seconds (very low volume Putt..... Putt...Putt....) while playing. Then noticed the same on amp startup at play time, (Putt.Putt.Putt) real fast 5-6 times and it stops after it gets charted up, then it goes back to putt putt putt every 10 seconds. Its almost like a capacitor or transistor or something may be going bad inside these plate amps. Not sure what to check for. If I switch the phase switch to Rev, the amp goes putt putt put real fast 10 times like a cap discharges. Its then stops for a while, a few minutes later the putt putt putt sound starts all over again every 10 seconds.
Amp#2:
Now the second Dayton 500 sub plate amp in my other home theater system is doing the same.
Age: these were both brand new plate amps from PE about 1.5-2 years old. Always on StandBy. Used moderately. Have a Richard Gray 1200 Powerstation for power regulation and protection. No issues there.
What to check with a multi-meter inside the Dayton 500 amps?
- Caps? Which ones, values?
- Transistors, which ones, values?
- Resistors, which ones, values?
Thanks in advance if you could look through your knowledge base for tips on what to check. Would prefer to repair these vs. replacing them unless you want me to send them back and you can send me new plate amps. My prior Rythmik Audio amps did not do this in 10 years of use. Hopefully something simple going bad inside. I did read DA puts the caps "too close" to each other whatever that means in terms of design issues, I don't know. Hopefully you do know what to check inside and a few parts can be replaced to fix it. What Say You "Parts Express"
???
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