Re: [LAU] Other Uses for Guitar Amplifer Preamp Stage

according to the schematics, a 4mV 1khz sine wave entering the input
will give a 66mV output at the preamp out socket. i know my guitars
put out a higher voltage than that (i have one that can put out over
2V peaks!) but the preamp output voltage wouldn't increase linearly
with that i shouldn't think. i would be very surprised if the output
voltage was anything to worry about, as i think the opamp before the
plug is designed to drop the voltages down. say what you like about
fender, that opamp isn't anything special, so i doubt it would handle
much more than your soundcard's line input.

i'm pretty sure i have hooked my (now in pieces) one in that way once.
like i said in the previous email, it isn't going to replace a 'clean'
mic pre, but it should give interesting sounds... wondering now what
the 'more drive' settings would have sounded like with my valve mic :)
hehe

of course usual disclaimers apply :)

porl

2008/5/29 Christian Delahousse <christian.delahousse@email-addr-hidden>:
> What is the output level and type of the preamp section? Is it equivalent
> to line level? If its OK to hook up to my interface, do you think it would
> be worth the effort and bypass my interface's preamp?
>
> -Chris
>
> 2008/5/29 porl sheean <porl42@email-addr-hidden>:
>>
>> the pre in a guitar amp is designed mainly for a high impedance source
>> (guitar pickup etc) whereas the mic outputs a low impedance signal. it
>> will still work and may sound great, but it won't sound 'clean'
>> (especially with the hrd's preamp section, which is not at all
>> designed for a clean audio path). the other thing to worry about is
>> the signal level that the pre section outputs not being too high level
>> for your soundcard's inputs. looking at the schematics i think it
>> should be ok though.
>>
>> hope this helps
>>
>> porl
>>
>> 2008/5/29 Christian Delahousse <christian.delahousse@email-addr-hidden>:
>> > Hey Guys,
>> >
>> > I have a Fender Hot Rod Deluxe guitar amp and noticed there is an preamp
>> > out
>> > for an effects loops. I was wondering if there were any other uses for
>> > this?
>> > Would the output on this suitable to bypass the preamp on my audio
>> > interface? Would this tube preamp stage be of any benefit? Could I hook
>> > up
>> > an SM57 to the amp input to be sent to the interface?
>> >
>> > Thanks
>> >
>> > _______________________________________________
>> > Linux-audio-user mailing list
>> > Linux-audio-user@email-addr-hidden
>> > http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
>> >
>> >
>
>
_______________________________________________
Linux-audio-user mailing list
Linux-audio-user@email-addr-hidden
http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user
Received on Thu May 29 20:15:04 2008