Hi Dusan
you can have balance output & rca
for input, if you want balance input & RCA
you must use switch, when use RCA you must connecting - to G
but for easyness & cheaper cost i suggest you use RCA connector
Rgds, Jeff
Incorrect. A four-deck pot or attenuator is all you need for balanced (L+/L-/R+/R-). And yes, if you have both balanced (XLR) and single-ended (RCA) wired up in parallel for an input channel, you need to short the - signal to ground to use the single-ended (RCA) input. On the actual Pass Labs preamp, shorting plugs are provided for this purpose.
BTW, I have a built set of these boards which I am going to sell, if anyone is interested in them. Tested and working. PM me and we can discuss.
BG N capacitors
I have been trying to get hold of some BG N cpaacitors but they have not been made for some time now and are unobtainable via any enquiries i have been able to make - Does anybody know where i can buy these 47uf an 10uf capactitors from (or does anyone have some to sell)?
A source for matched FET's would also be very useful.
I have been trying to get hold of some BG N cpaacitors but they have not been made for some time now and are unobtainable via any enquiries i have been able to make - Does anybody know where i can buy these 47uf an 10uf capactitors from (or does anyone have some to sell)?
A source for matched FET's would also be very useful.
Boards
I am not sure if this is typical but I have paid for my boards from veteran over a month ago and have yet to receive word whether he has sent them, is going to send them, or if I can even expect to hear back from him. Can anyone shed some light on the situation? Is veteran slammed and simply too busy to reply? Either way, if someone give me a clue what to expect I would greatly appreciate it.
Ark
I am not sure if this is typical but I have paid for my boards from veteran over a month ago and have yet to receive word whether he has sent them, is going to send them, or if I can even expect to hear back from him. Can anyone shed some light on the situation? Is veteran slammed and simply too busy to reply? Either way, if someone give me a clue what to expect I would greatly appreciate it.
Ark
Received my boards
I wanted to update my last post and say that I recieved my boards and they are great. The workmanship that veteran produces in very impressive. I am extremely excited and want to thank Veteran for taking the time out of his obviously busy schedule to provide neophytes like myself the opportunity to experience audio nirvana through their expertise. I have learned an incredible amount from contributors such as Veteran and look forward to learning more.
Thanks again Veteran for the great boards and sharing your experience.
Its greatly appreciated.
Ark
I wanted to update my last post and say that I recieved my boards and they are great. The workmanship that veteran produces in very impressive. I am extremely excited and want to thank Veteran for taking the time out of his obviously busy schedule to provide neophytes like myself the opportunity to experience audio nirvana through their expertise. I have learned an incredible amount from contributors such as Veteran and look forward to learning more.
Thanks again Veteran for the great boards and sharing your experience.
Its greatly appreciated.
Ark
Still have these if anyone is interested.
Attachments
Hi there...
What is required to complete this as a pre-amp?
How much are you after for it?
This would require a transformer and your choice of input selection and volume control. At a minimum it would require a selector switch capable of handling balanced signals for up to 4 inputs, and a 4-channel pot, such as some of the Alps pots available on ebay. Plus jacks, casing, etc. PM me if interested.
I am asking $140 US plus shipping, but feel free to make an offer, as I don't need these since buying a commercial Pass Aleph P1.7.
Only premium parts used throughout. Vishay-Dale RN60/RN55 resistors, with PRPs in the signal path; Panasonic TS-HA 1000uf/100V caps for PSU filtering. FETs were from Taraesque and matched (and I have a couple of extras). Coupling caps are Elna Silmic IIs on input (10uf), Elna Cerafines on the output (47uf), both bypassed with Vishay 0.1uf MKP1837s. I also have some 47uf Elna Silmic IIs for the output that I would include. Black Gates were not easily found when I built this, and the prices were getting pretty stupid for questionable value. If anything, film caps would be better in these positions. Nelson Pass likes the Silmic IIs a lot also.
Here is a link to the BOM I used, but this does not include the input/output caps, PRP resistors, PCBs, etc. or shipping. Pricing in this BOM is more than a year old also.
https://home.comcast.net/~youngc1/Al...Parts List.xls
Chris
Only premium parts used throughout. Vishay-Dale RN60/RN55 resistors, with PRPs in the signal path; Panasonic TS-HA 1000uf/100V caps for PSU filtering. FETs were from Taraesque and matched (and I have a couple of extras). Coupling caps are Elna Silmic IIs on input (10uf), Elna Cerafines on the output (47uf), both bypassed with Vishay 0.1uf MKP1837s. I also have some 47uf Elna Silmic IIs for the output that I would include. Black Gates were not easily found when I built this, and the prices were getting pretty stupid for questionable value. If anything, film caps would be better in these positions. Nelson Pass likes the Silmic IIs a lot also.
Here is a link to the BOM I used, but this does not include the input/output caps, PRP resistors, PCBs, etc. or shipping. Pricing in this BOM is more than a year old also.
https://home.comcast.net/~youngc1/Al...Parts List.xls
Chris
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