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Conference napalm::guitar

Title:GUITARnotes - Where Every Note has Emotion
Notice:Discussion of the finer stringed instruments
Moderator:KDX200::COOPER
Created:Thu Aug 14 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:3280
Total number of notes:61432

2740.0. "pre/power amp impedance" by JITORI::NAGAHASHI (Put on your best dress darling) Wed May 26 1993 22:20

    Could somebody tell me the general output impedance of guitar pre-amp 
    and input impedance of power-amp?? There is no descriptions about them
    on their manuals without a Rocktron GAP.

    I have four pre amps and 2ch speaker simulater for home recording. I'm 
    now using a patchbay for connecting the output of pre amps to speaker 
    simulater. It means it allows me to use the two pre amps at the same
    time. So I've been trying to make my own pre-amp mixer which is 
    4in-2out to add more flexibility. 

    Kaz
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2740.1OTOOA::ELLACOTTQuick Snarf bring my AxeThu May 27 1993 23:4110
    	Guitar preamps are anywhere from 500kohm to several mega ohm for
    the i/p impedance. The higher the better because they load the pickups
    less, the tradeoff is less noise imunity at higher impedances.
    
    	Poweramps tend to be in the 1k to 10k ohm range, although the 
    balanced input connectors should be 600 ohm by dbm spec.
    
    	This is what I have seen out there though not all inclusive.
    
    FJE