This might interest you - using two of mine PCBs you can built XLR input selector controlled by standard rotary switch, remote or standard/backlighted switches.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Subject to information around pricing, I'd be up for a pair of pre amp boards also. I wouldn't mind having a look at the layout as well...
Here is the layout.
An externally hosted image should be here but it was not working when we last tested it.
Volume Relay Attenuator ?
I designed passive volume attenuator few year ago with Peter Daniel. This module worked like a standard potentiometer with constant input impedance and range from -60dB to 0dB. I used OSRAM display (like the one used in Mark Levinson products).
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
I get a lot of questions about the availability of boards for this project - if there will be 20 peaple interested I can make more gold plated PCBs and ordered some matched transistors.
Hi Veteran,
You probably wrote it somewhere but what is the price of a stereo set with power supply and matched transistors?
Thanks
Do
im in no rush, so no pressure. just curious. any luck / progress with the BOM by any chance?
this is posted back a few pages
if it dosent work let me know ill email it to you
https://home.comcast.net/~youngc1/Aleph P 17 Parts List.xls
this is posted back a few pages
if it dosent work let me know ill email it to you
https://home.comcast.net/~youngc1/Aleph P 17 Parts List.xls
Update:
From the looks of it there are a few errors in that build list if i'm not mistaken. please correct me if i'm wrong. quantities for parts are greater than necessary.
• Missing IRF9610 and erroneously has them all listed as all requiring IRF610. (T3 and T10 should be IRF9610, and T1, T1, T2, T8, T9 should be IRF610 right?) item number is listed obsolete, replacement needed. (im planning to order mouser 844-IRF9610PBF and 844-IRF610PBF)
mouser 71-RN65D-F-33.2 (0.5W) preferred over listed 71-RN60D-F-33.2
mouser 71-RN65D-F-22.1 (0.5w) preferred over listed 71-RN60D-F-22.1
Missing 505-MKP410/250/10 10uf pp mkp4 caps x 14 or equivalent.
Has anyone else spotted any errors in that list?
--------
Thanks again. Do any of these parts NEED to be value matched? (Ive never done matching before, as my current project (Pearl II) came with matched JFETs where it was necessary.)
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