A Different Way To Do An Audio Probe

[Paul Marossy]

Although THIS works fine, I find that this version I made works even better.




I can just use a 1X scope probe to trace the signal. The tip of the probe is a little more well suited for probing things and you can clip the probe to ground and forget about it. I find that this version is just easier to use.

It's essentially the same thing as linked above but in a small plastic RadioShack project enclosure and uses a BNC connector for the scope probe and a regular 1/4" mono jack for the output to the amplifier.

I built this because I am doing more and more repairs to pedals, and this is a very reliable, durable and painless method of audio probing.

[theehman]

I've used one of the old tube Knight units for the last 13 years:

http://cgi.ebay.com/Knight-Signal-Tracer-with-magic-eye-tube-working_W0QQitemZ120452641740QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0b8973cc&_trksid=p3286.c0.m14

It's been a big help.

[Paul Marossy]

I've used one of the old tube Knight units for the last 13 years:

http://cgi.ebay.com/Knight-Signal-Tracer-with-magic-eye-tube-working_W0QQitemZ120452641740QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0b8973cc&_trksid=p3286.c0.m14

It's been a big help.

That's a cool gizmo. Never seen one of those before.

[theehman]

I've used one of the old tube Knight units for the last 13 years:

http://cgi.ebay.com/Knight-Signal-Tracer-with-magic-eye-tube-working_W0QQitemZ120452641740QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item1c0b8973cc&_trksid=p3286.c0.m14

It's been a big help.

Yeah, it does signal tracing (RF and AF), has a wattmeter for measuring power draw, and has an output transformer and speaker for substituting in tube amp circuits.

That's a cool gizmo. Never seen one of those before.

[Paul Marossy]

Wow, even cooler!

[space_ryerson]

Slightly OT, but I've heard that the Heatkit IT-12, also a signal tracer, can be modded to make a nice low watt tube amp! This thread has some info on it.

[Paul Marossy]

Slightly OT, but I've heard that the Heatkit IT-12, also a signal tracer, can be modded to make a nice low watt tube amp! This thread has some info on it.

Huh, another interesting device. My little audio tester only costs about $6 to make, though.