PCB's
< Kits and PCB's
< Audio Projects, Schematics,etc.
< DIY instrments
< music technology
< go4thaudio
Get flash to fully experience Pearltrees
small PCB design/manufacture
small PCB design/manufacture
This is the offical support thread for the Send 'N Blend (SnB). Each board set contains 4 channels of blend, Power Supply PCB, and 8 dual TRS adapter boards for 16 total TRS connectors . Boards are now available, please see my white market:
Features of the board: Can be built up as a vintage 312 type circuit, a more accurate sounding M1 type circuit, or as any of many other possible variations. 5 input transformer options: Jensen JT16A, Lundahl LL1538, Cinemag CMMI-2C (threaded bushing model), OEP A262A3, and standard 312 type (eg. Cinemag 75101APC, CMMI-8PCA, Jensen JT-110k-HPC, API 2622). PCB mounting for 2 output options: DC servo or standard 312 output transformer (eg. Cinemag CMOQ2L, API 2503). Accepts standard 2520 footprint opamps. +48V, -20dB input pad, and polarity invert with relay operation for pad and polarity invert.