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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.

Monday, August 25, 2008

TS-2 Mic Preamp Battery Powered

Monday, August 25, 2008 5:05:55 PM (Central Daylight Time, UTC-05:00) ( DIY | SC-1 Preamp Kit | TS-2 Preamp )

Start doing prototype of the case... get dimensions of holes and stuff... drill manually, make corrections, keep notes... do some filing to fix the screwups.

Some notes:

The Motherboard, Switchboard and VU meter PCBs... crammed in a 2-inch high, 6" width case. As you can see, it is tight... the switches and capacitors have literally millimeter clearances from hitting the ceiling. The distance between the motherboard and switchboard perfectly aligns with the PCB slot of the case.

Attach the front panel to the PCBs. Check out the input transformer peeking from the side.

Photo of the blue anodized case with the black anodized rack handles temporarily attached.

The switch toggle handles peek out just enough... No accidental flipping of switches. It takes some effort to consciously flip it. Using your thumb and fingernails seems to be the easiest way to toggle it.

The blue anodized finish of the case gives it a weird effect when photographed... kinda like a soft glow coming from the surface of the case.

Forgive the crooked holes for the VU meters, and too large holes for the switches. Smile

Smile

These were manually drilled.

I'm going to finalize the dimensions, and have a prototype shop do a sample panel for me using CNC.

Comments | Trackback |

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