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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.

 Saturday, January 20, 2007
Saturday, January 20, 2007 10:31:43 PM (Central Standard Time, UTC-06:00) (  |  |  )
I decided to rack the few remaining Sony MXP preamp and EQ modules I have. This particular mic pre module is using a discrete opamp enclosed in some green colored epoxy or something.

I've already racked a previous Sony mic pre and EQ, so I want this 2nd unit to match the layout of the first one I did. The only difference is this particular project, the mic pre does not have the Jensen transformers, and instead is using some discrete opamp, and will be in a black 1u case.

Here are some preliminary pictures.



The Mic Pre and EQ module I'll be racking.



Preparing the 1u front panel for drilling holes.

Having a drill press makes the job so much easier than using a hand drill. Safety first... don't forget to use goggles. Freak accidents happen, like a drill bit breaking and flying into your eye! (good thing I had the goggles!) So no matter show "quick" a job it is, don't forget your safety glasses or goggles.





Also, if you have a drill press, you can use a Step Drill Bit to drill big holes for XLR jacks. You need to start the hole first by using a 1/2" drill bit, before you can use the Step Drill bit.



For the Mic Pre, I have to make a square cutout in the front panel so I can slip in the module. Took a lot of time and work drilling, and filing and fine-tuning it, but in the end, I'm happy.




And here's the volume knob, power LED and power switch.




Next step: I need to make a cutout for the EQ module. Also need to drill the back panel for the IEC power connector, XLR and 1/4" jacks.


Comments | Trackback | # 
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Referred by:
discrete opamp pcb diy kit (www.google.nl) [Referral]
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diy eq (www.google.mu) [Referral]
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sony mxp preamp project (www.google.com) [Referral]
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diy eq (www.google.com) [Referral]
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diy discrete op amp (www.google.com.sg) [Referral]
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diy studio eq (www.google.be) [Referral]
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DIY EQ Kit (www.google.com) [Referral]
sony mxp api (search.yahoo.com) [Referral]
discrete mic pre diy (www.google.com) [Referral]
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