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Post by play4jc on Jan 24, 2007 7:50:24 GMT -7
I was using the low input last night in the Jr and was able to crank up the master and volume more, does that work like a attenuator, sorta. I was using the low for my Prs and hi for my strat. Seems overall sparkle went away with the low as expected or am i missing it all together.
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Post by kruzty on Jan 24, 2007 8:30:53 GMT -7
Not really like an attenuator - it's just that the input gain isn't as high.
Try playing with the Cut control to adjust the "sparkle."
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Post by BW on Jan 24, 2007 8:37:03 GMT -7
The low input has a 1 meg resistor across it to 'pad' it. Same as on old Fenders. I use mine when I'm trying to get a cleaner, less overdriven tone. You may well lose a little of that 'sparkle', but the apparent headroom increases. I plug my 'bucker guitars into the low most of the time too.
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Post by billyguitar on Jan 24, 2007 8:41:59 GMT -7
I've never noticed a tonal difference between the two inputs. Less breakup on the first of the note may make you think you're hearing less sparkle. Here's another test, set the amp clean, find out where the volume control needs to be for equal volume, play the same note or riff in hi and in lo and adjust the volume far an acoustic output match. I bet you won't hear as much difference.
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Post by ugoape on Jan 24, 2007 14:10:19 GMT -7
I thought that the difference between the two is the Low uses half of the V1 tube and the High Impedence is using both halves of the V1 tube. Maybe the Dr. can set us right.... BW is probably right, I found this info...
You know the "hi" and "lo" jacks on an amp? Often it is just input resistors. The "hi" jack has a lower resistor value, allowing more of the signal to come into the amp. If you take a close look, the "lo" jack is typically a 68k resistor. But when you plug into the "hi" jack, the signal goes to the 68k resistor as well gets routed around through the "lo" jack to the other 68k resistor. Two 68k resistors in parallel are 34k. Hence a stronger signal comes through. Good for single coils, but will cause more distortion with humbuckers and EMGs.
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Post by zdogma on Jan 24, 2007 14:19:29 GMT -7
I thought that the difference between the two is the Low uses half of the V1 tube and the High Impedence is using both halves of the V1 tube. Maybe the Dr. can set us right.... I know my THD is like this, but I think the Z's are as BW said.
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Post by ugoape on Jan 24, 2007 14:30:04 GMT -7
Zdogma I think your right, it can be done both ways.
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Post by billyguitar on Jan 24, 2007 15:07:30 GMT -7
The two inputs are configured just like a Fender amp's are.
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Post by jakeddy on Jan 25, 2007 5:42:14 GMT -7
I have been using the low input lately and I like the basic charater of the amp that way.
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Post by hollowman on Jan 26, 2007 13:05:31 GMT -7
I mostly use the low input, most of the clubs we play are small enough that I don't need the extra 3dB from the Hi input. and like billyguitar said, I don't notice much if any tonal difference between the 2 inputs.
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