I'm having a problem with my Audioengine A5s - the volume is unbalanced between left and right speakers. Quite sure it's not the pot thats spoilt as i just replaced it. On the A5's main PCB, I measured the AC voltage between the input left channel and ground (~83mV) and input left channel and...

I am using the PCM2707C chip and I can confirm that the volume control doesn't work on windows 7. Any idea if it works on windows 8? Might be time to upgrade.   Also, I am using the individual application volume controls, but any new program that is opened will be turned on to the default 100%...

my pupdac has a problem - sometimes the volume will go down to very low levels. Fiddling around with the components on the pcb will sometimes bring it up to the original, much higher, volume levels. I suppose there is a broken contact somewhere but I can't find it.   Does anyone know what the...

    Tragedy! I tried to desolder the PCM2707 chip and but burnt some solder pads off the board. Now the board is useless and I have wasted the other parts that are already soldered on :(   I then built a Pupdac with a PCM2707C after much effort (the pcm1794 is a tough job). Alas, the...

I am confused about this issue though - I read the documents for the "C" revision of the PCM2706/7 and it seems like they only changed the behaviour of the volume control (i.e. how the volume changes with the win7 volume slider); the "C" variant doesn't seem to enable the volume control.   ...

i just built my first grubdac with a pcm2707 - but the windows 7 main volume control doesn't work. I use this a lot so it is a big inconvenience. I realise that I could simply change the individual application volume control but I prefer having a working master volume control.   I checked TI's...

my diymod measures 1.5v.   great information in this thread, thanks   by the way, i recall that some people modded their er4p into er4s by adding a 75ohm resistor to each channel.   wouldn't this increase the impedance felt by the amplifier too? is it the same effect as using a...

thank you for the very informative posts.    I intend to build a high quality cmoy for some cans as well, so having information to build a low noise cmoy would be very helpful.   for the transformers: I understand that it's meant to make your low-impedance IEMs appear as high-impedance...

Hi guys, I've built a few cmoys before. Now I'm looking to get a cmoy with the lowest possible noise to power my sensitive IEMs. Any ideas on the measures I get the lowest possible noise floor? My ideas: Use the optional R5 (which type of resistor should I use for the best sound quality?)...

Bad, bad service. Repeated emails to rsaudio@raysamuelsaudio.com and PMs to Ray Samuels on warranty issues for my mustang have all been ignored. Checked spam folder, definitely no reply received. What kind of support is this? I'm about to sell all my RSA amps (I own 3) for a pico slim. I can't...

remove the unneeded pins, then bend the pins (pins 2, 3, 4 i believe) away from each other to give more leeway for soldering without shorts.   i.e. pin alignment from | | | to / | \

Btw, the 2-pin connector that attaches to the drivers is salvaged from another cable? Has anyone ever sourced a similar plug that can be used so I don't have to destroy my old cable? Thanks

Good guide with great pics but I'd suggest proper punctuation. Found it pretty hard to read.

Quote: Originally Posted by het.s Don't agree, caps fit inside 5G, in my case together with 120GB drive. Some people put succesfully 240GB drive inside, that is quite a storage. Caps are lytics obviously (for size matters). If you are concerned with electrolytic caps in signal path...

Bought a couple today.. Wima 1uF/50V MKS2 Wima 1uF/63V MKS2 Wima 0.68uF/63V MKS4 (sadly this can't fit in. Not sure why it's so much larger in size than it's MKS2 siblings) Evox Rifa (Kemet?) 1.5uF/50V All can fit inside the dock except the MKS4. Luckily my local store has a wider range...