rogonzab
277 posts
May 06, 2013
6:00 PM
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Hi,
I have a question:
What does the high and low inputs mean on an amp?
I read in guitar forums several hipothesis about this, but all seems to be very subjective or guitar oriented.
I use to have a Laney Cub12r, but I trade it for a Laney Cub 10 Because it sound better whit harp (way better), and it have both inputs.
The manual of the amps says this:
LO INPUT: ‘Lo’ stands for low gain. This
input is attenuated down approximately 50%
from the Hi input and is designed for full range
clean sounds
HI INPUT: ‘Hi’ stands for high gain. This input
is designed to enable the amplifier to be
overdriven more easily and has a restricted low
frequency range to avoid a “mushy” sound from
high output guitars.
http://www.americanmusical.com/ItemFiles/Manual/LAN_CUB10_Manual.pdf
So, for harp I use the low input, because it have -50% of gain.
But, and this is where I get confused, what happens If I want to change the tubes? (or, do I need to change the tubes?)
I have 2 options:
- Lower gain preamp tubes (two 12AY7 to reduce 50% in gain) and High input (regular mod for harp)
- Two 12AX7 and the Low Input, wich means the same -50% in the overall gain
Wich option is better, because there is a difference right?
(I use a mic whit a Shure CM from a Shure 520D wired to high impedance)
THXS!
Last Edited by rogonzab on May 07, 2013 7:09 AM
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Greg Heumann
2129 posts
May 07, 2013
1:13 AM
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Try everything. Use what works for you. Simple as that.
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/Greg
BlowsMeAway Productions
See my Customer Mics album on Facebook
BlueState - my band
Bluestate on iTunes
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Frank
2332 posts
May 07, 2013
4:42 AM
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Speaking of high/low - bright/normal inputs....What could be some of the causes of the "bright inputs" giving off extremely high volumes even though the volume level is set to zero on that channel? Thank you for any help and insight :)
I agree with Greg that you will find mics that respond differently in each channel and it will ultimately come down to a preference...I personally like the high or bright channels better with the amp I'm using which is like a bassman.
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shbamac
311 posts
May 07, 2013
5:03 AM
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If I remember correctly, bright vs normal is a difference in capacitors and hi vs low is a difference in resistors.
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