Quad 405: Bernd Ludwig's new Mod text - diyAudio
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Old 15th February 2007, 07:32 AM   #1
stefaan is offline stefaan  Belgium
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Default Quad 405: Bernd Ludwig's new Mod text

There is a new, updated version of Bernd's Quad 405 upgrade - revision - tweak text.

You can find the complete text with illustrations on my Quad-weblog (scroll all the way down, it is the last post - or use the hyperlink).


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Old 24th February 2007, 10:15 PM   #2
alex mm is offline alex mm  Romania
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Location: Baia Mare ,
hi , Stefaan
many years ago, i have build ,the original schematic , supplied with only +/-24Vdc and it work fine .In 1984 I start ,a new project ,this time whith rail voltage -/+50Vdc in final stage with 2 pairs powers transistors RCA from PERTEK tape recorders .Great project , with no necesary to mach finals transistors , no bias adjust etc ... Ifind a new born schematic of QUAD 405 developed by T.VICOL and I intend to make it in stereo , please comment the attached schematic .http://i18.tinypic.com/47lwvhf.png

sorry for my poor english
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