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Repairing A Kustom 100 4 CH PA head [message #28027]

Mon, 15 February 2021 02:07

Cody UNO
Messages: 35
Registered: February 2021

Member

Hello.
Hope everyone is staying warm. Not only is Mardi Gras cancelled, but we are expecting a big winter storm here in New Orleans.

Before I tell you about my amp issues, I just want to say that I am very thankful for this site and the info I have gotten. I just started collecting these amps and don't know much about them so all your knowledge and help is greatly appreciated.

So, on to my amp situation...

I drove 14 hours total yesterday ($75 was hard to turn down) for a cool little gold K100-5 Kustom 4-channel head. Serial #35817. I tested it tonight and noticed a few odd things. I think a few of the issues may have been addressed in a previous thread about a 200 version so I wont mention them.

1. The bass control on Channel One works until it goes over about 90% then it kinda cuts out. Im thinking some Deoxit might solve this issue. *Update: Contact cleaner fixed this*

2. You can hear the reverb tank make that typical sound (?) whenever the amp is first turned on as well as anytime I unplug from one channel and plug into another.

3. The reverb doesn't actually work on any of the channels. If I turn up the reverb knob, it lowers the volume a little bit on that channel. I opened the amp and everything is still plugged in (RCAs).

4. Channel Four has less volume than the other three. When I set all four amps to the same settings (as close I can) then Channel Four requires more volume. To give you an idea, if Channel 1-3 is at 9 oclock then Channel Four would need to be around 11-12 oclock for the same volume.

5. The power light occasionally dims for a moment. I have the amp plugged into a Furman Power Conditioner. Hoping the K100 may just need a new bulb.

6. This isnt an issue, but a question. What are the outputs on the back? Mine isnt labeled like my K250. Im assuming two speaker out, a RCA out, and a module out?

[Updated on: Mon, 15 February 2021 04:10]

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