Kustom pedal [message #26043] |
Fri, 14 April 2017 19:19 |
Iowa Boy
Messages: 767 Registered: June 2014
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Senior Member |
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I just purchased a vintage pedal that was used in combination with the lighted footswitch for the K-250 heads. I plugged it in and nothing. I'm having issues with my 2nd channel on both amp heads so I was wondering if the pedal only worked on the second channel and not the first. Other than the fuzz effect, all the functions work on channel one. Do you have to have the lighted footswitch as well to make this wah wah effect work or did I get a defunct pedal?
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Re: Kustom pedal [message #26044 is a reply to message #26043] |
Fri, 14 April 2017 22:20 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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The wah pedal works with the selective boost circuit. You should not need the foot pedal to make it work.
The pedal is just a pot connected to the three connections of the cable. Have you tried to read the resistance from terminal to terminal?
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Re: Kustom pedal [message #26048 is a reply to message #26043] |
Sat, 15 April 2017 16:55 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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The selective boost is like a preset parametric eq. It boosts a fairly small band of frequencies, the center of which is set by the switch. It is sort of like the mid range boost on Vox amps or on Ampeg V-series amps. The pedal is used to sweep the frequency to give you a wah pedal without having to buy a separate one.
If you are not reading any resistance between the tip and ground or ring, then the cord or the pot may be bad or the wiring has been messed with.
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Re: Kustom pedal [message #26052 is a reply to message #26043] |
Mon, 17 April 2017 12:51 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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A few years back this discussion came up and the pedals at that time were selling for somewhere around $150. One guy was making substitute pedals and selling them here. There might be a mention of the pot value in that old thread.
As for fixing or replacing with a home grown version, some guys want only original things like footswitches and pedals. Others just want things that work. An original pedal will always be worth more than a substitute, but depending upon who's looking at it it may not matter one bit.
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Re: Kustom pedal [message #26058 is a reply to message #26043] |
Tue, 18 April 2017 11:14 |
stevem
Messages: 4773 Registered: June 2004 Location: NY
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Senior Member |
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From the pots center leg to either end leg you should read a resistance that changes with pedal sweep.
Tested with the pedal unplugged of course!
I notice from the schematic that there is a boost foot switch that may need to be in the on position?
Does the effect knob besides the selective boost knob work?
[Updated on: Tue, 18 April 2017 11:20] Report message to a moderator
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Re: Kustom pedal [message #26059 is a reply to message #26043] |
Tue, 18 April 2017 18:58 |
Iowa Boy
Messages: 767 Registered: June 2014
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Senior Member |
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Yeah the tone control works. I just tried it out again this time using only the 4th string and went to the bottom frets and the tonal effect was a little more prevalent. Think if using an actual guitar it would probably sound a lot better. Seems to work in the higher frequencies and not the low's. At least I now know it works just not intended to be used with a bass. Thanks again everyone for your help. Now I'm just waiting for the lighted footswitch again. There is no on switch on the pedal so guessing that the effect switch has to be turned all the way up to make it work.......like an intensity setting I guess.
Has anyone heard from Pleat lately? I sent him an email about a week ago and never heard back.
[Updated on: Tue, 18 April 2017 19:03] Report message to a moderator
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Re: Kustom pedal [message #26060 is a reply to message #26043] |
Tue, 18 April 2017 23:15 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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Have you tried different settings of the 6 position switch? I thought that it would switch the range to a higher or lower frequency band, which would cover a wide range of instruments.
According to another poster from a few years ago, the original pot was a 10K value. What does your read? If it is too low of a value, then there will be a lessening of the overall effect.
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Re: Kustom pedal [message #26062 is a reply to message #26043] |
Wed, 19 April 2017 12:47 |
chicagobill
Messages: 2006 Registered: April 2003
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Senior Member |
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According to the schematic, the pot should be wired to change the resistance between the tip and the ring connections. Inside the amp, the shield is connected to the tip and both are grounded. The ring connection should vary from 10K to zero, reading to ground. If the ring connection doesn't reach zero (or at least near zero) to ground, the effect will be weak.
If you remove the pedal how well does the selectone circuit work?
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Re: Kustom pedal [message #26085 is a reply to message #26071] |
Mon, 24 April 2017 11:22 |
pleat
Messages: 1454 Registered: June 2004 Location: Belding, Mi
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Senior Member |
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Just going from memory but I think the selective tone switch should be set at #1 and the effect control set at minimum to have the boost pedal give the most wah effect with a guitar.
pleat
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