[sdiy] BBD Maximum Clock Speed in a flanger/phaser

[anthony]

I'm heavilly modifying a piece of equipment that has an MN3006 and an MN3007 
to be used as a flanger type of effect.
Looking at the datasheets of each BBD shows a maximum clock speed of 200kHz 
and 100kHz respectively.
I've looked at a lot (LOT) of flanger (chorus, phaser etc) designs. One of 
them (at least), the Ultra Flanger by John Hollis clocks an MN3007 at around 
1.5MHz, which at first I thought couldn't be right but then I realised that 
since it's a flanger, it's not being clocked that high all the time. From 
earlier discussions it was recommended that Panasonic BBD's really not be 
overclocked, but I was wondering if anyone has had any experience doing just 
that in an application where the clock speed is scanned like in a flanger. 
I'm wondering what an upper limit might be. (Although I can't really see 
needing delays shorter than what a 1.5MHz clock would give with either an 
MN3006 or an MN3007.) I think using a fixed MN3006 and an MN3007 clocked up 
to 1.5 MHz might work out perfect.