Tremolo Ticking? [message #24800] |
Wed, 23 March 2016 21:05 ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
Shaun_Musings
Messages: 323 Registered: April 2009 Location: Reading, MA
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Senior Member |
![Kanwak](/FUDforum/theme/vk30/images/yahoo.png)
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Well, the title says it all... I bought a circuit-breaker Kustom 200 A4 for 100$ (guy didn't know the footswitch needed to be used). So, why is the tremolo ticking? With the speed knob all the way down it just goes...tick... tick... and when you turn the knob, it gets faster. I thought this only happened with tube amplifiers, those which had that roach thingy?
Born on the Baaaaayou (Ok, in Massachusetts)
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Re: Tremolo Ticking? [message #24809 is a reply to message #24800] |
Thu, 24 March 2016 13:38 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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Are you talking about a tick when the tremolo/vibrato is turned off or when it is on and the noise is in the background?
I know that on a B-series amp the footswitch shuts off the oscillator, but I'll have to look at the A-series schematic to see if that is true for those amps as well.
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Re: Tremolo Ticking? [message #24814 is a reply to message #24800] |
Thu, 24 March 2016 16:40 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) ![Go to next message Go to next message](/FUDforum/theme/vk30/images/down.png) |
chicagobill
Messages: 2005 Registered: April 2003
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Senior Member |
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Checking the schematic, the oscillator is always running and the footswitch just bypasses the circuit.
Does the ticking change depending upon the setting of the depth control? How about the Tremolo-Vibrato control?
The K200A trem/vib circuit is much different than the later K200B circuit. Each section is a circuit by itself. There is a tremolo circuit and there is a vibrato circuit. These two circuits were combined in the K200B amps.
If one circuit makes the noise and the other doesn't or if one is quieter than the other, it may help focus in on the problem area.
The two circuits share the same oscillator circuit, so that would also be a good starting point.
[Updated on: Thu, 24 March 2016 16:41] Report message to a moderator
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Re: Tremolo Ticking? [message #24823 is a reply to message #24800] |
Fri, 25 March 2016 06:17 ![Go to previous message Go to previous message](/FUDforum/theme/vk30/images/up.png) |
stevem
Messages: 4772 Registered: June 2004 Location: NY
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Senior Member |
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All of your A series amps need to be re-caped then for starters as the trem and vib in these amps work very nice when all is well .
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