[sdiy] Noob Question: Passive Filter Design

[Oren Leavitt]

Ian Fritz wrote:
> At 05:18 PM 5/4/2010, Oren Leavitt wrote:
> 
>> As for non-LC options, an array of resonant twin-tee bandpass filters, 
>> like the two-transistor PAiA 2720-3B, might be an interesting option 
>> to play with.
> 
> 
> Yes, that's what my 36 Ch fixed frequency bank uses.  See EN #107 (1979).
> 
> Ian
> 

Just took a look in EN #107
Nice! You're using a phase-shift version of the above.
Looks like Bernie did a nice write up on those new LM13600 and CA3280 
OTAs that just came out, too - I shall have to mail off an order for 
some. :-)
Thanks for bringing that up Ian.
- Oren