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Post by zedsnotdead on Jan 22, 2014 20:24:24 GMT -5
Hello people! So I just installed 3 HB (similar to SD Hotrails) on my strat. I also used G&L PTB wiring, that I really love. This one: guitarnuts2.proboards.com/thread/6483/500-schematicEverything is exactly as this schematic (pots, caps, all of it). The thing I noticed is that the low-cut/hi-pass filter (Bass control) is not responding so well as it should be. When the guitar had single-coils, it's pretty noticeable the effect of the filter, but now it seems is barelly doing anything to the signal. I mean, if the rails are on series-mode, there's almost no difference turning the knob. But if I split the coils, it's more noticeable, but not much when I had SCs installed. Though the low-pass "normal" filter (Treble) is working OK. Could this have something to do with pickups impedance? Should I use a different cap value, or pot value? For what is worth, here's the DC Resistance of the pickups DC Resistance: Bridge = 13.2kOhm, Middle = 13.0kOhm, Neck = 12.4kOhm Thank you for your help!
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Post by ashcatlt on Jan 22, 2014 21:12:30 GMT -5
Could this have something to do with pickups impedance? Yes. Yes. Probably not.
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Post by zedsnotdead on Jan 23, 2014 16:23:52 GMT -5
Thank you!
Could you suggest what values of capacitance should I try for the Bass control? I think I should take some bass when it rolls off... like it is now, I barelly notice any change on Bass cut...
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Post by ashcatlt on Jan 23, 2014 20:24:15 GMT -5
Cap value is always inversely proportional to cutoff frequency, so I figure make the cap smaller. In order to guess a specific value, you could model it, but you'll probably get closer to what you want more quickly by just subbing in smaller and smaller caps (or adding caps in series with the one you've got now) until it sounds right to you.
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Post by zedsnotdead on Jan 24, 2014 16:02:17 GMT -5
Yeah... just did a model and simulate the frequency response against a 1.1nF. The cut-off freq is higher, no doubt. Also, switching the volume pot for 500K, makes a difference, but not on the cutoff frequency (as expected), rather on the magnitude (dBV) of the cutted signal, I reckon... Think Ill try different caps as you suggested.
Thanks a lot!!!
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Post by 0wnyourtone on Jan 27, 2014 21:17:09 GMT -5
Did you ever get the hi pass working on the HBs like you wanted? I love that wiring too - I have it in my Pro Jet and I'm thinking of going back to it on my Strat. Too many options.
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Post by zedsnotdead on Jan 28, 2014 18:08:24 GMT -5
I still have to change the cap. Waiting for the next string change to do it and test it
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