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previous: Mark Buckingham >Your project sounds fun and useful... -- 7/1/1998 7:58 AM view thread

Re: Tube AMPS for low volumes

7/2/1998 9:15 AM
mhelin
Re: Tube AMPS for low volumes
quote:
">Your project sounds fun and useful! How are  
>you going to build the speaker emulation  
>circuit? Keep us posted on how it turns out!  
 
For starters, I'm going to put an 8ohm resistor across the secondary of the ot. Second, I'm going to tap some signal off of that with a 220k resistor, then feed that to an op-amp based filter to roll off the highs a bit."
 
 
Speaking of speaker emulation circuits, could we just take a speaker with a broken cone but intact coil, and connect the magnet & coil somehow, with epoxy or other means, so that the dont make any sound, and use it as a speaker emulator? Maybe a small fan is needed to keep the temperature from rising to high.  
 
The resistor has different sound due to impedance depending on frequency, with resitor the resistance=impedance (depending on resistor type).  
 
-Mikko

 
Replies:
Doc Check GFR's "Plate to Plate" site f... -- 7/2/1998 12:13 PM
Steve A. Mikko:7/2/1998 6:50 PM