diyAudio http://www.diyaudio.com/forums/gallery Tue, 29 Jul 2014 19:02:51 -0400 PhotoPost Pro 6.02 LeachTT_003s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6742 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6742" target="_blank"><img title="LeachTT_003s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_003s.jpg" alt="LeachTT_003s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: A closeup of Brian Bell's (BrianGT) modified Leach amplifier board with Thermal Trak transistors installed and cooking on my workbench Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 LeachTT_003s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6743 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6743" target="_blank"><img title="LeachTT_003s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_003s.jpg" alt="LeachTT_003s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: A closeup of Brian Bell's (BrianGT) modified Leach amplifier board with Thermal Trak transistors installed and cooking on my workbench Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 LeachTT_003s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6744 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6744" target="_blank"><img title="LeachTT_003s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_003s.jpg" alt="LeachTT_003s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: A closeup of Brian Bell's (BrianGT) modified Leach amplifier board with Thermal Trak transistors installed and cooking on my workbench Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 LeachTT_005s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6745 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6745" target="_blank"><img title="LeachTT_005s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_005s.jpg" alt="LeachTT_005s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: The amplifier chassis I scrounged from a piece of former studio lighting equipment, which works out nicely as a test bed amplifier with about the size heat sinks I wanted and a general layout I prefer. Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 LeachTT_005s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6746 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6746" target="_blank"><img title="LeachTT_005s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_005s.jpg" alt="LeachTT_005s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: The amplifier chassis I scrounged from a piece of former studio lighting equipment, which works out nicely as a test bed amplifier with about the size heat sinks I wanted and a general layout I prefer. Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 LeachTT_007s http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6747 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6747" target="_blank"><img title="LeachTT_007s.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1490/thumbs/LeachTT_007s.jpg" alt="LeachTT_007s.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: My Tektronix AA-501A based distortion test set, showing 1 kHz distortion at several watts from the Leach-based amplifier I'm testing with Thermal Trak output transistors. The 'charge suckout' capacitor does seem to make a significant improvement in distortion at 10 kHz, by the way. Damon Hill Tue, 14 Jun 2011 23:20:58 -0400 IG1272schm http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6741 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/6741" target="_blank"><img title="IG1272schm.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1496/thumbs/IG1272schm.jpg" alt="IG1272schm.jpg" /></a><br /><br />by: Damon Hill<br /><br />Description: A closeup of the Heathkit IG-1272's Wein bridge oscillator schematic. Damon Hill Tue, 14 Jun 2011 23:20:57 -0400