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Re: New To The Site [message #27971 is a reply to message #27970]

Tue, 26 January 2021 00:27

SouthernVersion
Messages: 2
Registered: January 2021
Location: New York

Junior Member

Hey Don, thanks for the warm welcome, and thanks for the info. I wasn't able to pick up the cab Monday, I will be picking it up on Wednesday, I will also take pictures and email them to you. Thanks again!

-Matthew

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Forum: Repairing Kustom Amps

Topic: K100-2 Hiss

Re: K100-2 Hiss [message #27972 is a reply to message #27969]

Tue, 26 January 2021 05:57

stevem
Messages: 4331
Registered: June 2004
Location: NY

Senior Member

Due to widely veering efficiencys of different speakers , and how old the speakers Magnet may be , a test done like that would not be valid, not to mention that control pots have a 10 to 15% resistance tolerance to them!.

I will try and come up with a better way for you to test out results and get back to you.

Do you have a digital voltmeter?

[Updated on: Tue, 26 January 2021 05:58]

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Re: K100-2 Hiss [message #27973 is a reply to message #27972]

Tue, 26 January 2021 09:51

hgibson
Messages: 2
Registered: July 2016

Junior Member

Good Morning, Thank you for your response. First I want to know if I should have any hiss at all, if not then I need to troubleshoot. If hiss at some level was inherent in the Kustoms when built, well I dont need to do a thing. That is what I was trying to establish. For starter reference, Speakers are original Kustom G12a. I have noticeable hiss at 1/2 volume, increasing with volume and increases significantly when increasing reverb. When both are turned all the way up, hiss abundant and I pick up a local radio station. Unfortunately the music from the station is better than what i am playing. Razz

You have a valid point on too many variables using decibel level as I described to troubleshoot. I was using that method to establish if hiss level needed attention at all. In any case my answer to your question is yes, I have digital mutimeter, 2 year degree in Electrical Engineering, but most of that was lecture , book learning, it would have helped to actually troubleshoot something in lab. I can read a diagram, crank calculus, solder like a pro but lost in signal tracing. Hands on failure of higher Ed. I do like a logical approach to troubleshooting and not solution by replacement. Since Hiss is so prevalent in Kustoms it begs for someone to lay out a step by step procedure for troubleshooting. Thank you for your time. Hugh, Vermont

Hugh Gibson

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Current Time: Tue Jan #d 22:56:36 EST 2021

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