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#1
11-09-2012, 09:22 AM
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high input vs low input on a guitar amp
i've always assumed that low input jacks referred to single coils, while high input meant humbuckers. now i'm thinking that low input is a dry signal, while high is through a boost? is this wrong?
if i have an amp w/ only one input, can it be optimized for high or low input? it seems that the best way is to start with one configuration, then use a pedal to bring it up to spec of the other. any ideas? 
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#2
11-09-2012, 09:58 AM
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The opposite, actually. A "low input" usually is a padded input, while the "high input" is actually the stock circuitry. As for their use, it depends what you want from your amp; more gain, use the high side, more headroom, the low side. A more technical explanation available upon demand.
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Good Deals
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#4
11-09-2012, 10:07 AM
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i dont think either of the OP's theories are correct. i think i just depends on the sound you are looking for. my fender has 2 inputs and #1 is much brighter than #2. both have their places and work with any pickups or pedals.
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#5
11-09-2012, 10:13 AM
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Quote:
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This post is the view of the author, and should be considered with all the usual acronyms implied, including, but not limited to, IMO, IMHO, IMESHO, FWIW, IIRC, and YMMV. In addition, whenever in doubt of the intent of the author, the presence of an appropriate smiley meant to imply that any questionable statement was not intended to offend should be assumed. The author is not liable for anything stated in this or any other post, or any emotional damage that may accrue. Thank you for your cooperation.
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#6
11-09-2012, 10:18 AM
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Some input jacks are just wired with a single resistor for the low input jack and two resistors in parallel for the high input jack. Single resistor=Higher resistance=lower signal hitting the front end of the amp. Two resistors in parallel=lower resistance=hotter signal hitting the fron of the amp. I think this is the way 4 hole Marshalls were wired.
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"Guitar amps sound best right before they blow up"
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#7
11-09-2012, 10:19 AM
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Depends on the amp.
At least one I've had, the '2' input was a differnt voicing.
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Youtube Demos My Band 242 Thorn, Kauer, PRS, and 2tek Guitars. Sundries by WCR, Wolfetone, Scumback, V-Picks I do not own, nor wish to own a retail or music industry related business in any way shape or form.
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#8
11-09-2012, 10:24 AM
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Fwiw, regardless of inputs available, I've learned that using a volume pedal (like the Barber Launch Pad) to find the ideal input strength leads to huge rewards. Only pedal i use regularly, and at this point i wouldn't want to do without it.
__________________
This post is the view of the author, and should be considered with all the usual acronyms implied, including, but not limited to, IMO, IMHO, IMESHO, FWIW, IIRC, and YMMV. In addition, whenever in doubt of the intent of the author, the presence of an appropriate smiley meant to imply that any questionable statement was not intended to offend should be assumed. The author is not liable for anything stated in this or any other post, or any emotional damage that may accrue. Thank you for your cooperation.
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#9
11-09-2012, 10:31 AM
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I have been using the low inputs on my vintage Fenders with single coils. These amps sound much better with the power tubes turned to the 6 to 8 range. I can drive the power tubes this way at a lower volume. If I need more headroom I plug into the #1 jack.
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#10
11-09-2012, 03:48 PM
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jaz,
you get breakup earlier with the low input? The volume pedal idea sounds interesting. If I understand all this correctly, then am I right to assume that using a volume pedal with a single input will essentially yield the same result, just with more options, than having a "low" jack in addition to the "normal" (high) jack?
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#11
11-09-2012, 04:21 PM
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Quote:
__________________
This post is the view of the author, and should be considered with all the usual acronyms implied, including, but not limited to, IMO, IMHO, IMESHO, FWIW, IIRC, and YMMV. In addition, whenever in doubt of the intent of the author, the presence of an appropriate smiley meant to imply that any questionable statement was not intended to offend should be assumed. The author is not liable for anything stated in this or any other post, or any emotional damage that may accrue. Thank you for your cooperation.
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#12
11-09-2012, 04:34 PM
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For a sound somewhere between the two on Fenders you can plug into input 2 and put a dummy plug into input 1.
**caveat** - the plug needs to NOT be shorted. IE: no connection between tip and sleeve. -Aaron
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(?)->brain->fingers->guitar->other stuff->amp->speaker->room->ears->brain->etc... Last edited by aflynt; 11-09-2012 at 04:53 PM.
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#13
11-09-2012, 07:34 PM
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Quote:
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"If it wasn't for flashbacks I wouldn't have any memory at all!"
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#14
11-09-2012, 07:45 PM
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Quote:
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#15
11-10-2012, 05:11 AM
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When there's a bright cap across the preamp volume knob, having a high and low input can be really useful - for example, on my amp having the bright cap switched in makes it too bright, having it switched out makes it too dark. But by using the low input I can turn the preamp volume higher to get the same amount of breakup, and have a less trebly tone with the bright cap switched in (the effect of the cap reduces as the knob is turned up)
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