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Building a DIY 1176 Compressor - Part 2

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SC-1 Mic Preamp NOW ON SALE!!!!

After many months of development, testing, troubleshooting, frustration, problems, and accomplishments... the SC-1 mic preamp kit, PSU-1848 power supply kit and power transformer kits are now available for sale!

Click here to ORDER

Photo of a finished SC-1 mic preamp kit!  (Note: XLR jacks and wires shown on picture not included in the kit.)

Features:
- Low-Noise, transformerless, High-Quality Mic Preamp
- All solid-state design, using chipsets from THAT Corp and Burr-Brown
- Soft-start, slow ramp-on +48V phantom power
- Crystal clear Red LED indicator for phantom power
- Electronically balanced input and output stages
- 12-position Grayhill gain selector switch
- Gain range from +6 to +72dB, in 6dB increments
- Input RFI protection
- Input clamping protection
- Output surge protection circuit
- Output RFI protection
... read more...

Download PDF file of Assembly Guide/Kit Instructions

Related products like the PSU-1848 Power Supply Kit, Power Transformer Kit, Power Control Kit are also available for sale. Click here.

 Sunday, December 10, 2006
Monday, December 11, 2006 4:00:04 AM (Central Standard Time, UTC-06:00) (  |  )
Just a continuation of the saga of building my 1176 clone compressor/limiter. Click here for Part 1

Parts arrived a few days ago, and other than the audio input and output transformers and chassis, I think I have enough parts to build (2) units. Here are some pics...

First, we have the output LL5402 Lundahl transformer and the LL1540 input transformer. Made in Sweden.  These things are small.



I got most of the capacitors and the power transformer at digikey.com. They have good prices for these components.




The rest of the parts like the pots, resistors, and ceramic/mylar parts came from Mouser.com. It's a big pile!







I'll clear up my work area and maybe this Christmas break, I'll be able to start construction.  Oh yeah, need to order some 2u case from Par-Metal.com.  I only have spare 1u cases in my workshop at the moment.

We're ready to build the 1176!