PartTimeProjects Welcomes You

Welcome to my website, parttimeprojects.com! Here you will find pictures and descriptions of my projects.

There are a few but hey, this stuff took a lot of time!

All Projects made in Southern California, USA


Feel free to give me (LGreen) your anonymous comments by entering them below (ok to omit your email), or click here, to send an email to me.

  Grid Ver:  06_07_10
Amplifiers
  Phono Stage Preamplifiers
Krell KSA-50 A "Clone" of the Krell KSA 50   "Bugle" A "Bugle" opamp based,
(August 2005) Amplifier, 50 WPC, Class A.   (February 2007) battery powered phono
  preamplifier
 
DX HRII A 50 WPC Amp, designed by   "Pearl" A "Pearl" MOSFET and JFET
(May, 2009) Carlos in Brazil!  Class A/B.   (April 2007) based phono preamplifier.
  From Pass Labs.
   
Krill Innovative biasing and 100 WPC    
(January, 2010) from this DIY design.   Room Acoustics
  Hanging Bass Traps Hanging acoustic absorbers
ExtremA The  name "Extreme" says it all.   (May 2007) made out of Owens Corning 703. 
(November, 2009) 70 WPC, virtually no distortion,  
and its Class A of course.   
Add Outer Support and pillowtop
  Corner Tube Traps Corner acoustic absorbers tubes
SymAsym "AAK" Version A DIY amplifier designed by the
  (June 2007) made out of rigid mineral wool.
(June, 2010) DIYer for the DIYer.  100 WPC  
Class A/B.   
   
Pass F5 A big, hot, class A amp gives you   Other
 
(May, 2009) 25 WPC into 8 ohms.  Worth it?   Soft Start Circuit My own PCB for soft starting an  
  (July 2005) amplifier circuit.  
Chipamp - LM3886 A LM3886 stereo amplifier with
   
(April 2004/ mod in 2005) differential input and ultra low   Test Signals Downloadable audio test tones  
noise power supply for   (August 2005) about 1 minute in length.   
input circuitry.  50 WPC.
  Uncompressed WAV stereo  
  format.  
Chipamp - LM4780 A LM4870 based "parallel" amp    
(May 2006) in a "lunch box."  50+ WPC.   CES 2006, p. 1 Picturesof CES 2006 hgh end  
  (January 2006) audio equipment, page 1 of 2.  
   
Line Stage Preamplifiers
  CES 2006, p. 2 Pictures of CES 2006 high end  
X-CCS-BOSOZ Implementation of a Pass Labs   (January 2006) audio equipment, page 2 of 2.  
(Nov. 2004, mod in Jan 2006) "bride of son of zen" line stage    
preamplifier.   Amplifier Stand An amplifier stand filled with  
  (May 2007) sand.  
Balanced Buffer A differential stereo buffer with
biamp buffer
   
(July 2007) a stereo input and quad output,   Ikea Stereo Rack (Mod) An Ikea TV stand modified for
for driving 2 amplifiers from a   (October 2009) a bunch of monster amplifiers
single preamplifier.  
 
iPod Accessory/ Buffer A differential line driver for
  Guest Pages Send me your DIY pics and you
(November 2004) connecting an iPod to a   (In progress...) could have your very own
balanced preamplifier   guest page!
   
     
Headphone Amplifiers      
CMOY A "CMoy" Headphone amplifier
http://www.parttimeprojects.com/audio/diy/Images/CMoy/CMoy%20Front%20View.jpg
 
(October 2008) That Runs off 9V batteries or AC,  
and has 2 inputs and an RCA output.  
 
 
   
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