The secondary RC filter pretty much works independently from the rest of the circuitry.
I know the F5 has a huge bandwidth. If you are already using a 1K/.0022 filter it would be better to limit the bandwidth at the F5s input circuitry. That has been discussed by Mr Pass, I believe even in his original article. 10pf across the inputs comes to mind, but I could be off.
I know the F5 has a huge bandwidth. If you are already using a 1K/.0022 filter it would be better to limit the bandwidth at the F5s input circuitry. That has been discussed by Mr Pass, I believe even in his original article. 10pf across the inputs comes to mind, but I could be off.
Tried 10pf and later 20pf,the temprature is a littel better but still a little to much.
How high can I go on the capasistor before it starts affecting the hearing area?
How high can I go on the capasistor before it starts affecting the hearing area?
That's a tough question for me to answer. It's best that you post on the F5 thread to possibly get an answer from the master, NP. I built one but I really didn't like it, but don't tell Mr Pass.
I thought someone might be able to help me diagnose this issue. 😱
I recently noticed a big difference between playback levels between my Mac Mini (which is outputting to the DAC via USB) and my Oppo 980 player. A few weeks ago I pushed my receiver to clipping (for just a moment) while using the Mini/DAC setup. Ever since, it seems that I have to "crank" the receiver to produce a normal loudness level. As a reference, -20 dB is pretty loud when using the Oppo. The Mini/DAC might need to go to -0 dB for a comparable level.
There's no distortion, buzzing, humming, or odd artifacts during playback either way. The speakers seem fine. The receiver is fine. It's just odd.
I recently noticed a big difference between playback levels between my Mac Mini (which is outputting to the DAC via USB) and my Oppo 980 player. A few weeks ago I pushed my receiver to clipping (for just a moment) while using the Mini/DAC setup. Ever since, it seems that I have to "crank" the receiver to produce a normal loudness level. As a reference, -20 dB is pretty loud when using the Oppo. The Mini/DAC might need to go to -0 dB for a comparable level.
There's no distortion, buzzing, humming, or odd artifacts during playback either way. The speakers seem fine. The receiver is fine. It's just odd.
If anyone's interested I'm selling my UTC A20's. $80 shipped in the U.S. $80 plus for international...
Looks like a bargain - at the moment!
🙂
Vintage NOS UTC TRW A-20 Transformer Tube Amp Pair. Search US Ebaaay!
About 27 Bucks with 12 hours to go!😉
🙂
Vintage NOS UTC TRW A-20 Transformer Tube Amp Pair. Search US Ebaaay!
About 27 Bucks with 12 hours to go!😉
Maybe getting bored with 'soft' sound of the A-20.....
Maybe tube stage much better..........
The DAC is awesome but the setup is impractical for me and I have a master plan involving the AMB Y2 and a CS3310 Digital Volume controller dac/preamp setup.😎
I don't believe a comparison has been done, so I do not know if it will be better. However, it's compact size is worth the possible compromise in sound for my project goals.
The DAC chips are pretty similar for measurables, so as always it will come down to implementation. The existing analogue out on the Chinese DACs is not good. The AMB gamma2 has been designed to fit in a compact extruded case, which won't allow room to deploy DIY regs or output stage.
I feel like a real Homer (Simpson). When I pushed the receiver to distortion levels, it seems that iTunes adjusted down its level to compensate. I've changed the sound level back to 100%, and the receiver/DAC combination is once again way loud at -30 dB.
Thanks for pointing me in the right direction.
I tried to experiment with 24bit 192khz to see how or if it sounds good at all.. but all I got was hiss...actually I could hear the begining of the song by right away it went to hiss..
I uses XXHighEnd to upsample.. I checked the documentation that came with it
and I set the switches right... has anybody tried 24/192 successfully?
I uses XXHighEnd to upsample.. I checked the documentation that came with it
and I set the switches right... has anybody tried 24/192 successfully?
memofer there is a hack you need to do to enable 192khz 24 bit AFAIK. I believe it is stated somewhere in this thread or at lampizators site.
