If what I saw in the picture is correct, I think it is not a good solution and should be replaced with quality film caps.
I’m having a very hard time deciding if I should go with a pair of Sylph-D400M or a pair of the new 3E Audio PFFB amps? They seem to be very similar in price and performance. Which one would you pick?
It's just a placeholder until the boards are available, there's a thread from the vendor here: https://www.diyaudio.com/community/threads/tpa3255-tpa3251-with-post-filter-feedback-pffb.390701/
I ordered an "upgraded" version TPA3255 amp board. Arrived 10 days from China to Hungary. The first listening impressions are very good. Much-much better than Wondom Gremlin, or my Onkyo TX-8130.
I checked the PCB, and it have two serial connected Rubicon 820 uF/25V caps after power connector, 4 x serial connected 2200 uF/25 V Samyoung ( 😀 ), few ceramic and finally nearest to the chip 3 paralell 1000 uF/50V capacitors (2 similar, 1 different). Compare with other manufacturer's implementation, I think a little bit too much capacitor sitting on PCB. What is your opinion, worth reducing the quantity of capacitors. I'm thinking Panasonic FC or Nichicon.
Thanks for help! Sorry for my bad english, it isn't my native language.
I checked the PCB, and it have two serial connected Rubicon 820 uF/25V caps after power connector, 4 x serial connected 2200 uF/25 V Samyoung ( 😀 ), few ceramic and finally nearest to the chip 3 paralell 1000 uF/50V capacitors (2 similar, 1 different). Compare with other manufacturer's implementation, I think a little bit too much capacitor sitting on PCB. What is your opinion, worth reducing the quantity of capacitors. I'm thinking Panasonic FC or Nichicon.
Thanks for help! Sorry for my bad english, it isn't my native language.
Hey all,
I'm trying to find info on possible OpAmp upgrades for the TPA3255-2CH-260W . My 4 boards came with NE5532P - is OPA1656 a noticeable upgrade? I'm mainly using single ended input. Cheers
I'm trying to find info on possible OpAmp upgrades for the TPA3255-2CH-260W . My 4 boards came with NE5532P - is OPA1656 a noticeable upgrade? I'm mainly using single ended input. Cheers
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I bought 2 new Chinese board and both got the issue with R channel in my video. If i turn up DAC input and connect speaker to R output, Fault lamp will turn off, board also disable. Connect Reset will restore normally
I'm using OPA2604 and to me they sound a lot better than NE5532. They have FET input and high slew rate. Very low distortion. Also they work up to 48V.
Oh crap. Are the opamps on the same voltage as the rest of the board? I run mine at 51V which means the OPA1656 I just ordered are not going to work then...
Thank you.
One thing that I really don't like about this amp is the major POP on the speaker outputs at power on. Not good for my active tweeters...
Can something be done about that?