24-band Vocoder ttt

 
 

 

IN STOCK

 

L-1 VOCODER for Eurorack.

 

Module wide 32HP, deep - 80mm.

 

Power consumption: V+ 494mA, V- 435mA.

 

5 PCBs

 

Euro panel

 

It is PCBs and panels for making 24-channel analogue vocoder.

 

Pricing:

$35 per board, 5 boards total = $175

Frontpanel 32HP - $40 (frontpanels are with or without cats, please note which you want)

Backpanel - $15

Shipping:

Skrill: info(at)greenexpo.by

Paypal: info(at)greenexpo.by

You can order any quantities of boards or panels, not obligatory full set.

Who want to order more than two sets, ask about shipping cost.

 

 

Muffwiggler forum:

 

Order thread http://www.muffwiggler.com/forum/viewtopic.php?t=56280

 

Build thread http://www.muffwiggler.com/forum/viewtopic.php?t=75707

 

Samples:

 

 

 

 

 

 

 

Docs:

 

Partslist control board.

Partslist filterbank board.

PCB top control board.

PCB bottom control board.

PCB filterbank board.

Frontpanel.

 

 

WHERE TO BUY COMPONENTS?

 

I noted by different colors which components are included in kit, which are better to buy in Tayda Electronics, which are included in Mouser shopping carts.

 

In Tayda Electronics I recommend to buy potentiometers, film capacitors and between boards connectors. Links are in the partslists.

 

MOUSER SHOPPING CARTS:

 

L-1 Vocoder filterbank boards (included quantities for all 4 boards)

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=617e4d15ab

 

L-1 Vocoder control board

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=cc0d66d0f3

* 47p and 22uF capacitors and ferrite beads from control board are included into filterbank cart quantities.

** OPA2604 are currently out of stock at Mouser. You can use any dual opamp instead, TL072 is basic, HiFi ones preffered.

 

THAT chips for L-1 Vocoder

https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=7084af805b

 

THAT chips are pretty expensive in Mouser. Try to contact THAT Corp. to buy them direct.

http://www.thatcorp.com/THAT_IC_Products.shtml

Or this seller:

https://www.etsy.com/shop/RockmoreLabs?section_id=17400134

 

* If you have limited budget, possible to swap THAT300 for 2N3904 transistors, matched pairs preffered.

 

 

HOW TO TRIM COMPRESSOR DISTORTION SYMMETRY ON CONTROL BOARD

Disconnect everything except of power. Measure DC voltage at 12 pin of 4301 when compression pot is on min, then on max. Trim trimpot to make these voltages equal. It's a bit more than -2 mV on mine.

 

 

Euro frontpanel:

 

 

L-1 Vocoder photos:

 

 

 

 

 

 

 
 

(c) 2012 L-1 Synhesizer. E-mail: info@greenexpo.by