Where to parts for adding bias test points to an amp?

[scottosan]

I am looking to add those bias test points to the back of an amp, but don't know what they are called or have any part numbers. please help.


Thanks,
Scott

 

[RockNRollBabyHead]

Test probe sockets.
Try Mouser

 

[FortinAmps]

I am looking to add those bias test points to the back of an amp, but don't know what they are called or have any part numbers. please help.


Thanks,
Scott

Hey Scott,

You can get them at http://www.digikey.com

Part# J106-ND RED Test Point
Part# J107-ND BLACK Test Point

Mike

 

[duesentrieb]

Three guys, three answers

Get selected 1Ohm resistors and solder them between cathode and ground (8/1 normally) - and diy with a DMM.

 

[RockNRollBabyHead]

And don't forget, if you are going to externally mount the sockets on the chassis of the amp, you will also need to mount the proper adjustment pot there too.
Maybe if you let the builders know what amp it is, you can find out the proper rated pot etc.

 

[FortinAmps]

You can also buy a complete bias kit mod with instructions and all the parts included here:

http://www.londonpower.com/catalog/index.php?cPath=6&osCsid=a9ffadb88f3719b375bf1f6385e504cc

BMK2 or BMK4 would do nicely

 

[duesentrieb]

or a Weber Bias Rite . . .

or with a really good DMM learn to read off the OT, Scott.

 

[titanamps]

they're called tip jacks, i think. doug hoffman has them too http://www.hoffmanamps.com/

like olaf said, you're going to need to use 1Ω resistors if you're going to use the typical approach. i'd use 3W rated ones.

if the amp doesn't already have a bias adjustment pot, you'll need to do some other modifications as well.

 

[duesentrieb]

Didn't your loop arrive yet, Dave?

edit: just saw your PM