China-mic bias-mod pictorial

Johan's simple circuits..

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A few BC108's

Date: 12/17/2007 Views: 661

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China-mic bias-mod pictorial

a photo guide on how to mod and bias the common China made U87 copys..the mic's themself are allright, but the FET selection probably just didnt happen...here is how you can bias them to get the headroom that the spec's say they have..read the comments!

Date: 02/23/2006

Owner: Johan Blomdahl

Size: 15 items

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stock mic Date: 02/23/2006 Views: 1661	open chassis Date: 02/23/2006 Views: 1607	pcb Date: 02/23/2006 Views: 1476
back of pcb Date: 02/23/2006 Views: 1402	components removed Date: 02/23/2006 Views: 1661	C4 moved Date: 02/23/2006 Views: 1545
mount trimmer Date: 02/23/2006 Views: 1768	check voltage Date: 02/23/2006 Views: 1609	adjust bias Date: 02/23/2006 Views: 1623

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