Correction Maxx VCF-7A

[tomg]

On 20-Aug-98, tomg wrote:
>The VCF-7A is based on the ARP 4O23 4 pole LM39OO lowpass filter.
>I have wanted to do the early Odyssey filter for a long time. Thanks
>to marjan for sending it to me. The 4O23  has a quality all it's
>own you probibly won't be able to hear it from a 8 bit wave file but
>you'll get the general idea. I made a few modifications to the original.

>Changed the over all bias radically.
>Removed the op-amps.
>Changed the exp-converter.
>Added a resonance loop.

>I didn't match anything all transistors were selected at random.
>Haven't done the pcb yet, maybe this weekend. I'm kinda burnt out on
>the Mad Mouse pcb right now.

>http://www.tomg.vivid.net/maxx/page_034.html  - Page
>http://www.tomg.vivid.net/maxx/pics/vcf7a.wav - Wave File

>-tg

Sorry it was late.. 

"The LM3900-based ARP filter is the 4075. The 4023 is a 2-pole 
biquad used in the early Oddies." 

I got busted by the Arp Police..Thanks joachim.

-tg