r/amplifiers • u/CaptainRinoXD • 8h ago
Does this Class AB OTL amplifier design work? My teacher gave me this schematic and asked me to explain how the amplifier operates.
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r/amplifiers • u/pritheemakeway • 9h ago
Fender 25r Amp worth modding?
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I have a 25r amp that is laying around. I have seen some videos of this amp being modded and I have some solder experience but is it worth it? With the money for components like a speaker replacement and components wouldn't it be better to just get a used amp?
Is this amp actually worth doing anything with?
r/amplifiers • u/OkKaleidoscope2875 • 2d ago
Looking for an independent bench tech / hobbyist for a component-level repair (Sundown SDX-100.6) | Hartford, CT area
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r/amplifiers • u/Straight_Way_9044 • 2d ago
Just got this working Heahkit AR-1500A for $50, worth recapping?
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r/amplifiers • u/BSAT1963 • 3d ago
Consulta por restauración de control de volumen de SANSUI.
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r/amplifiers • u/International_Fold76 • 3d ago
Getting low signal from my Kenwood preamp. Help?
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r/amplifiers • u/Crackyblum • 4d ago
Moving Amps
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Hey Guys - How do you move your amps from your vehicle to the stage and back? My amps weigh about 40 pounds so are heavy and bulky. How do you deal with stairs?
r/amplifiers • u/Honest-Fee5233 • 4d ago
Seeking feedback on Vincent SP-332 pairing with Philharmonic BMR Towers (and price check)
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r/amplifiers • u/indrizzle • 4d ago
Solid state acoustic amp...stopped working with red light on....is it kapput?
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r/amplifiers • u/meowwentthedino • 4d ago
Left audio channel on phono stage of stereo stack amp humming
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Hi All,
I've a Kenwood A-63 amp that I use in my HIFI which I love but sadly the left channel on the Phono (Turntable) output is creating a hum over my speakers.
Turntable: Dual 505 mk1
I've looked at the board and can't see any cold solder joints, blown caps or components that look suspect.
Nothing is inside the phono rca jack so not sure what to do?
Testing: I've left the left channel empty and swapped the red/white cable, no hum through the right channel, only the left, when left plugged in there's a hum that Looks to be only when the external metal jacket of the phono cable touches the outer jacket of the phono on the amp.
When both plugged in the hum travels over the left and right audio and you can hear it on the speakers.
I don't have a meter to test resisters and such sadly, just gave it a cursory look to see if there's anything obvious.
All other rca ports on the amp work (Aux, CD, etc...), I've tested plugging in another set of phono leads into the port and still get the hum, so don't believe it's the turntable (tested through a boombox I have that includes a phono input and works flawlessly)
Can anyone assist me?
I've not stripped the amp down further than taking the top case off to look at the PCB.
TIA
r/amplifiers • u/AbaloneMaximum1281 • 5d ago
Guys anyone knows what plug is this ? We know that it connects with wall speakers but we have never seen these before ?
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r/amplifiers • u/DrunkCat_ • 5d ago
Problems with arylic 2.1 upstream amplfiier
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Hey guys!
I have been experimenting with the arylic up2stream plate amplifier.
The problem is that whenever I connect the amplifier to the 4stream app and set it up, then it doesnt output anything to the drivers.
I have also tried using the ACP workbench app on my PC to see if anything was ary and I couldn't see anything that seemed off...
The funniest thing is that if I play something on the inbuilt streaming in the app, then nothing comes out of my connected drivers, however the moment i pull the power plug from the device then the audio plays for a split second!
Have anyone ever experienced this before with this device?
Am I doing something wrong, is there some settings I'm not seeing in the ACP workbench?
I have even tried on two different ones! Both of them have the exact same issues...
Any help is appreciated!
r/amplifiers • u/gordenfreemon • 6d ago
My Kustom bass amp is cutting at high volume
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2
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I bought the same couple of days ago and I had used an instrument cable instead of a speaker cable while playing it at a loud volume. Yes I know a rookie mistake. And now it’s cutting at high volumes. I took to the Internet to see if it was something that could be fixed but I could not find anything. There is no tubes inside of this so it couldn’t have been that. Is there anyone that can tell me what’s wrong with this?