12-03-2012, 09:20 PM
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#1 |
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UG's only Azorean
Join Date: Feb 2007
Location: Visalia
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Buying a log pot but have no idea what to get.
From the thread I posted yesterday about my amp being too loud I'm looking to buy some Log pots for my Hot Rod Deville 410. Because I work in a music store I have the luxury of being able to buy right from the manufacturer. Only problem is that I have no idea what to buy or what I should buy. What do you guys think I should get? This would be for my Master volume and my Volume knobs. Thanks once again!
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12-03-2012, 10:02 PM
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beginner
Join Date: Oct 2007
Location: on the road... again
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i would pull the chassis, look at the resistance value of the pot that is already there and then get a log version in the same value.
the master looks like a 100 K ohm. the volume looks like a 250 K ohm. i found that from the schematics, but don't take my word for it, you should double check. Quote:
but you should be able to just plug in 'audio taper pot' and the value and get hits.
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"A perfection of means, and confusion of aims, seems to be our main problem." -ae |
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12-03-2012, 10:16 PM
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UG God
Join Date: Sep 2008
Location: Richardson, Texas
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A is audio/log for all North American manufacturers. You might be able to order one from Fender that will fit stock, otherwise you'll have to bend a sheet metal jig yourself.
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12-04-2012, 05:52 PM
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#4 |
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UG's only Azorean
Join Date: Feb 2007
Location: Visalia
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Well that's strange. I just opened up the chassis right now and noticed that my Volume pot is marked "15A 250K" and my Master pot is marked "B100K" meaning that my Volume pot is logarithmic and my Master pot is linear. From what I've been told the design flaw is that both pots are linear. Guess that just means that I only need to buy one pot now! Woo!
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12-04-2012, 05:56 PM
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UG God
Join Date: Sep 2008
Location: Richardson, Texas
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Newer ones come with log volume pots.
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12-05-2012, 12:56 AM
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#6 |
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Grumpy Old Tech
Join Date: Oct 2009
Location: Australia
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I said I thought they were both linear but I wasn't sure. Just replace the linear one. Try to get a good one like a Bourne. If you're going to the trouble of replacing it, use a good one, they aren't that much more expensive.
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Gilchrist custom guitar Yamaha SBG500 Telecaster Ibanez Iceman Roland GP-8 Quadraverb Abbey Harmonic II Marshall JTM45 clone Marshall JCM900 4102 (modded) Marshall 18W clone Fender 5F1 Champ clone Marshall 1960A Cathbard Amplification |
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12-05-2012, 01:06 AM
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beginner
Join Date: Oct 2007
Location: on the road... again
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Quote:
KICK ASS! i read a schematic correctly... you see that cath?  seriously, schematics are my kryptonite, especially ones that complex. i should really do it more often and get better. just change the B value one then. that would be your main culprit.
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"A perfection of means, and confusion of aims, seems to be our main problem." -ae |
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12-05-2012, 01:09 AM
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#8 |
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Grumpy Old Tech
Join Date: Oct 2009
Location: Australia
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Good boy. Now you can have a cookie.
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Gilchrist custom guitar Yamaha SBG500 Telecaster Ibanez Iceman Roland GP-8 Quadraverb Abbey Harmonic II Marshall JTM45 clone Marshall JCM900 4102 (modded) Marshall 18W clone Fender 5F1 Champ clone Marshall 1960A Cathbard Amplification |
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12-05-2012, 01:20 AM
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UG God
Join Date: Sep 2008
Location: Richardson, Texas
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Quote:
Only 1/4w pots will fit. And you need this jig:  |
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12-05-2012, 01:23 AM
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#10 |
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Grumpy Old Tech
Join Date: Oct 2009
Location: Australia
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What a PITA. Have I mentioned how much I hate PCB mounted pots? You end up with bs like that ^.
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Gilchrist custom guitar Yamaha SBG500 Telecaster Ibanez Iceman Roland GP-8 Quadraverb Abbey Harmonic II Marshall JTM45 clone Marshall JCM900 4102 (modded) Marshall 18W clone Fender 5F1 Champ clone Marshall 1960A Cathbard Amplification |
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12-05-2012, 12:14 PM
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#11 |
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UG's only Azorean
Join Date: Feb 2007
Location: Visalia
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Thanks for all of your help, guys! I've got myself an order to make.
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