<a href="http://casperelectronics.com/images/finishedpieces/double-barbie/S3600001.JPG"><img src="http://casperelectronics.com/images/finishedpieces/double-barbie/_S3600001.JPG" align=left width="200" height="150" alt="" title=""  /></a> <a href="http://casperelectronics.com/images/finishedpieces/double-barbie/S3600002.JPG"><img src="http://casperelectronics.com/images/finishedpieces/double-barbie/_S3600002.JPG" align=right width="200" height="150" alt="" title=""  /></a><BR CLEAR=ALL>

<h1>Two glitched out <a href="http://www.casperelectronics.com/finished-pieces/barbie-karaoke/">BarbieKaraokeMachines</a>...one unit. </h1>
<a href="http://www.casperelectronics.com/images/finishedpieces/double-barbie/S3600027.JPG"><img src="http://www.casperelectronics.com/images/finishedpieces/double-barbie/_S3600027.JPG" width="200" height="150" alt="" title="" class="alignright" /></a>
The BarbieKaraoke has several inputs and outputs that are hardwired in it's original form. <br>-Mic input which is really an amplified input to the echo<br>
-Echo output<br>
-Tape amp in  <br>
-Tape amp out <br>
-Master amp in <br>
-Master amp out<br>
<a href="http://www.casperelectronics.com/images/finishedpieces/barbie-karaoke/BKICs.jpg"><img src="http://www.casperelectronics.com/images/finishedpieces/barbie-karaoke/_BKICs.jpg" width="400" height="300" alt="" title=""  /></a>

The BarbieKaraokeMachine has two circuit boards. One is the main sound board, the other is a sort of mixing board where all of the signals are mixed together and controls like volume and pan are mounted. <br> At the bottom of the main sound board is a row of points that connect to a ribbon cable. This row of points is where all of the sounds leave and enter the board (except for the mic/echo input which is at the top left of the board & the tape amp input which is at the bottom left). <br>
By disconnecting the ribbon cable and connecting jacks to these points (including the echo and tape in) you can create a audio patchbay. <br>Below is a schematic that identifies each point.
<a href="http://www.casperelectronics.com/images/finishedpieces/barbie-karaoke/part2.jpg"><img src="http://www.casperelectronics.com/images/finishedpieces/barbie-karaoke/_part2.jpg" width="200" height="330" alt="" title=""  class="alignright" /></a>
<h2>There are more schematics on the <a href="http://www.casperelectronics.com/finished-pieces/barbie-karaoke/barbie-bending/">BarbieBending</a> page.</h2><br><br>

I rewired the boards so that the inputs and outputs could be accessed via 1/8" jacks and I added volume adjustments to each input. I didn't use the tape deck ins and outs but may in a future model. <br> 
Then I added two sets of pitch and decay adjustments and four rows of echo glitch adjustments. Each glitch has an ON/OFF switch, an adjustment knob and two banana jack patch points. This allows for modular patching and crossbending but was really designed so it could be used with my <a href="http://www.casperelectronics.com/finished-pieces/sequencers/">mechanical sequencer</a>
The units can be used independently or can be patched into eachother for maximum insanity.
