[sdiy] BBDs

[harrybissell]

You forgot "BBDs SUCK"   :^P

H^) harry     <bfg>

anthony wrote:

> Any flanger circuit that uses a 4046 for the clock (lot of others too)
> can be easilly modded for VC use.Just mix a a jack for the CV and the
> original LFO. 100K resistors work fine. Here's a really cool
> circuit:http://home.debitel.net/user/jhaible/jh_storm_tide_flanger.htmlIt's
> a pretty big circuit though. I'm working on one using 2 R5106's.
> (Probably more suitable than 3207's)For the MN3207's if you need
> really fast clocking speeds (which you really do) - up to 1.5 MHz can
> be done - you need a buffer. Three inverters for each clock phase
> (using a 4049). Here's a link for
> that:http://www.hollis.co.uk/john/ultraflanger3.jpgIt's for MN3007 but
> I think it's not too rough to adapt. Just tweaking the bias and power
> supply. There are schematics for flangers with MN3207's, but all of
> the reviews of these models are fairly poor. I'm guessing that too
> slow clock speeds were used so what they really were were more like
> tubular chorus. A lot of the earlier flangers and choruses used
> SAD1024's and SAD512's and R5106's which have a higher rated max clock
> speed. These seem to be the more prized of the vintage
> flangers. MN3207's work great for chorus though. The Dimension C used
> 2 and it's superb. Really to get blown away by chorus it should be
> stereo and the Dim C is true stereo. And even though it's pretty
> subtle it blows people away. Here's another good starting
> point:http://ampage.org/cgi-bin/hammer/index.cgi?cmd=lt&xid=&fid=&ex=&pg=1 I
> need to find the link to the flanger uses a 4007/4047 for the clock.If
> I can't find it I'll mail a scan of my handdrawn version. All of these
> links have good chorus examples.I hope that gets you started. (Hope I
> didn't over-answer)  ----- Original Message -----
>
>      From: dustin sedlacek
>      To: Seb Francis
>      Cc: Synth DIY
>      Sent: Thursday, June 16, 2005 4:39 PM
>      Subject: Re: [sdiy] BBDs
>       can these be used to make a VC flanger ? anyone have any
>      schems ?
>       On 6/16/05, Seb Francis <seb at burnit.co.uk> wrote:
>
>           Hi All,
>
>           I'd just like to make a quick recommendation about
>           VisualSound .. they
>           are selling new MN3207 BBD chips (not old stock
>           Panasonic) for
>           reasonable prices ..
>           http://www.visualsound.net/bbd.htm
>
>           I just ordered a few from them and despite the
>           fact that I'm in UK and
>           they are in US, they arrived very quickly .. and
>           in fact the P&P cost
>           was less than if I had ordered from a UK company!
>
>           Seb
>
>
>
>
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>
>      --
>      Dustin
>