hardware/stick-preamp - This is a dual channel preamp in the making. I intend to use it with my [Chapman Stick](http://stick.com). You will need the [gEDA programs](http://www.geda-project.org) to view and edit these files. The [PCB editor](http://pcb.geda-project.org) is required to edit the board.

	Commit message (Collapse)	Author	Age	Files	Lines
*	connect nets XOVER and PREAMP_2	rekado	2015-04-05	1	-0/+2
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*	board.pcb: update to latest file format	rekado	2015-04-05	1	-1795/+1793
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*	remove superfluous pin	rekado	2015-04-05	1	-11/+0
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*	add pin for preamp2 out / xover in	rekado	2015-04-05	1	-2/+11
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*	swap crossover output	rekado	2013-08-08	1	-9/+9
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*	add indicator LED for crossover	rekado	2013-08-07	1	-6/+17
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*	add output jacks	rekado	2013-08-05	1	-2/+29
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*	add missing coupling capacitor	rekado	2013-08-04	1	-37/+39
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*	update component names / silk screen	rekado	2013-01-25	5	-105/+121
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*	3 mounting holes: M2x0.4	rekado	2013-01-08	1	-10/+7
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*	increase mount hole diameter	rekado	2013-01-02	1	-942/+940
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*	reduce gain of melody preamp?	rekado	2013-01-02	1	-0/+2
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*	move cap away from drill hole	rekado	2013-01-02	1	-19/+20
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*	remove out pins to -Vcc from board	rekado	2013-01-01	2	-77/+88
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*	remove outdated comment	rekado	2013-01-01	1	-3/+1
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*	increase route to pin clearance	rekado	2012-12-31	1	-7/+7
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*	simplify routing of melody return cap	rekado	2012-12-31	1	-35/+28
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*	redesign	rekado	2012-12-29	1	-970/+1103
\| \| \| \| \| \| \|	- less space between resistors - removed trim pots - removed one signal buffer - routed Vcc through transistor pins (maybe change that later)
*	bypass contacts are wired on the switch, off-board	rekado	2012-12-29	1	-14/+70
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*	remove melody buffer (preamp is buffered); remove trim pots	rekado	2012-12-29	2	-94/+54
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*	correct name	rekado	2012-12-28	1	-1/+1
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*	connect only one of the jack switches	rekado	2012-12-28	2	-22/+21
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*	reduce gain/distortion	rekado	2012-12-27	1	-1/+1
\| \| \| \| \|	there still is some distortion which could possibly be eliminated by increasing the resistor some more.
*	don't roll off low frequencies in bass preamp	rekado	2012-12-27	1	-1/+1
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*	pins to connect offboard blend pot	rekado	2012-12-27	1	-1/+21
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*	put inputs on -Vcc when nothing is connected	rekado	2012-12-27	1	-3/+9
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*	improve coupling at mixer	rekado	2012-12-26	1	-20/+66
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*	add coupling caps to return; remove from mixer	rekado	2012-12-26	1	-148/+190
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*	update all coupling caps to 10uF	rekado	2012-12-26	4	-18/+18
\| \| \| \| \|	this is to ensure that the voltage across the cap is low at all frequencies we care about.
*	clean up middle section	rekado	2012-12-26	1	-535/+535
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*	remove coupling caps	rekado	2012-12-26	1	-123/+122
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*	connect reference voltage via resistor; reduce cap value	rekado	2012-12-23	2	-70/+132
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*	replace power filtering resistor with inductor	rekado	2012-12-02	2	-30/+32
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*	replace another JFET with NPN transistor	rekado	2012-11-26	2	-103/+98
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*	replace JFET with NPN transistor	rekado	2012-11-26	2	-101/+100
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*	place and connect transistor in tuner mixer	rekado	2012-11-26	1	-271/+273
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*	add NPN transistor to make mixer active	rekado	2012-11-26	2	-156/+247
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*	add transistor after bass blend pots	rekado	2012-11-25	4	-262/+466
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*	update board to latest schematic changes	rekado	2012-11-23	1	-62/+85
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*	reminders to add buffers/active mixers	rekado	2012-11-23	2	-4/+7
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*	add shunt resistor to output	rekado	2012-11-23	1	-8/+17
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*	update board	rekado	2012-11-22	1	-1016/+834
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*	add jumper to connect Vcc nets	rekado	2012-11-22	1	-1/+14
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*	move power rails filtering to power supply	rekado	2012-11-22	2	-180/+135
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*	rename power connector to make it appear on PCB	rekado	2012-11-22	1	-3/+3
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*	more biasing with reference voltage	rekado	2012-11-22	1	-60/+8
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*	adjust value and size of support caps	rekado	2012-11-22	1	-4/+4
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*	power supply filtering	rekado	2012-11-22	1	-14/+43
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*	use this expensive voltage reference instead of a voltage divider	rekado	2012-11-21	3	-108/+28
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*	first complete layout draft	rekado	2012-11-20	1	-793/+475
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