Differences between version 9 and previous revision of LeslieAmplifierModifications.

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Newer page: version 9 Last edited on November 28, 2023 5:59 am. by BradBaker
Older page: version 8 Last edited on September 6, 2013 1:59 am. by
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 2 Carefully match C9 and C10, the 0.1 600v coupling caps in between the aforementioned driver tube and the output tubes. Here's a link to a site with schematics http://hammondb3andleslietips.com Torres is a good source for the matching caps. Orange drops sound good here. 
  
 3 Also match resistors R5 and R7, 1 MEG 1/2 watt. Ohmite carbon comp are a good choice, just buy (and measure) 10 or 20 and you'll get a good match . These changes provide a much more equal signal to both sides of your output tube. You'll hear the difference in volume, maybe a huge difference if your original components are very uneven. 
  
-BradBaker provides details on a relatively simple <b>[modification | http://www.arcanedevices.com/hammond/122_mod/]</b> which can be made to the 122 amplifier that allows it to use either 6550 or EL34 output tubes. The purpose for this modification is to improve the distortion characteristic of the Leslie amplifier.  
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 TopicModification 

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