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Old 12-23-2013, 10:22 AM   #1
AfghanVet
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Switching up potentiometers!

Hey there folks,
I am prepping up for a pickup switch in my Ibanex ARZ400. Right now, it is loaded with EMG HZ pickups, which are absolute garbage. I'm switching up to a Lace Deathbucker in the bridge. Here is my question, The HZs use 50K pots, and the Deathbucker requires 250k. If I swap out both pots to 250K for the Deathbucker, what will that do to the remaining HZ in the neck?
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Old 12-23-2013, 11:51 AM   #2
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I thought HZ's were passive? Passive pickups need high pot values. If you are using 50k, maybe that's whay they sound like shiz. The pot value is too low, loading the pickups too much and killing off all the highs.
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Old 12-23-2013, 01:15 PM   #3
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Quote:
Originally Posted by Invader Jim
I thought HZ's were passive? Passive pickups need high pot values. If you are using 50k, maybe that's whay they sound like shiz. The pot value is too low, loading the pickups too much and killing off all the highs.

They are passive. I never thought of that as being another potential cause of tonal problems. That is an excellent point Invader Jim. If that's the case, then the 250's should help out with the neck as well then.
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Old 12-23-2013, 01:42 PM   #4
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yoiu should actually be using 500 for passives humbuckers anyway. I have never heard of a bucker suggested to go with a 250 k pot.
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Old 12-23-2013, 02:33 PM   #5
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Duncan suggests 250s with the JB in bright guitars, but it's definitely the exception.
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Old 12-23-2013, 04:09 PM   #6
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It doesn't really matter what is "suggested". You should go with what sounds best to you.
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Old 12-23-2013, 08:16 PM   #7
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So what does the higher pot value do to tone? What reasons would there be to go for a 500k instead of a 250? Or a 1000 for that matter?
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Old 12-23-2013, 08:36 PM   #8
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Higher value=less signal loading=more highs in the signal.

If you look at a volume put and ignore the wiper, it is just a resistor slapped across the signal and ground. Lower values cause more current to flow from the signal wire into ground (ground can usually be thought of as oblivion). Since more current is flowing in the pickup/volume pot loop, the load on the pickup is higher, so it kills off the high freqs.

Also, since higher values load the signal less, you get a bit more output. But the primary effect of higher pot values is a brighter sound. 1M can give humbuckers some bite, but I tried it once and it was too trebly and harsh for me. 250k for humbuckers was too bassy for my taste. I, like most people, prefer 500k pots for humbuckers. I've read that Gibson uses 300k though.
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Old 12-24-2013, 06:16 AM   #9
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Thanks for the insight Jim! Greatly appreciated!
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Old 12-24-2013, 12:19 PM   #10
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No problem. If you want to know anything else just ask.
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Old 12-24-2013, 05:35 PM   #11
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It can't work like that, Jim. Don't you know that portion of the signal goes to ground? That means it can't effect the tone!

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Old 12-24-2013, 06:54 PM   #12
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Lol. Alright man.
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