Archive of the former Yahoo!Groups mailing list: MOTM

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [motm] If I'd consider making a PCB for a flanger ...

From: Mark <yahoogroups@...>
Date: 2007-07-15

On 7/7/07, JH. put forth:
>If there's enough interest, this could be a project for a future PCB
>development. I wouldn't restrict this to Hammond emulation, but make a
>mono-in / stereo out device in the fashion of many Roland / Boss dual-BBD
>chorus circuits. Just without BBD. Let me know what you think ...

I don't think I'd be interested in the scanner chorus. While I'm
sure that getting it to work was quite an achievement, and it's short
delay time is uniquely impressive, imho, it's a bit too subtle for my
tastes. However, I would be be quite interested in a Roland
emulation dual-BBD PCB.

On 7/15/07, JH. put forth:
>Now, I know what BBD chip option #1 would be (I won't tell right now, for
>obvious reasons ...)
>
>Please let me know what you'd prefer as option #2. (Should ∗not∗ be another
>vintage / extinct specimen, but one of the modern parts.)
>
>Preferred length is 512 stages.

Curious, which BBD chips are currently in production?? As far as
single units with 512 stages, there was the Reticon SAD512 (which
came in 8 and 16-pin versions), the Phillips TDA 1022 (16-pin), and
the Panasonic MN3002, MN3204, and MN3304 (all 8-pin, afaik). I don't
think there are any others. I have heard conflicting opinions on
whether or not the MN series can be used as direct replacements for
the Reticon chips.