[sdiy] why use TDA1022's or any other no longer made BBD for newprojects?

[harrybissell at wowway.com]

sorry I've been so sleepy on the list lately...

"BBDs SUCK !"      :^P

H^) harry



On Thu, 1 Nov 2007 10:15:29 +0100, JH. wrote
> > why use TDA1022's
> 
> Because when I started that Triple Chorus project, the TDA1022 was 
> *the* chip that was widely available and apparently no one was using 
> ...
> 
> I'm still convinced tat there are a lot more of them out there,
>  distributed to shops all around the world.
> 
> JH.
> 
> ----- Original Message ----- 
> From: "anthony" <aankrom at bluemarble.net>
> To: <synth-diy at dropmix.xs4all.nl>
> Sent: Thursday, November 01, 2007 5:53 AM
> Subject: [sdiy] why use TDA1022's or any other no longer made BBD 
> for newprojects?
> 
> It's often frustrating to look at schematics for BBD type projects 
> and find that it's one that I don't have.
> 
> MN3007's and MN3207's are still available to the point of ubiquity 
> and new MN3207 and MN3102 clones are in current production.
> 
> Basing new designs on BL3207's and BL3208's (the latter available 
> both in 8-pin and 14-pin dip) will ensure that there is no scramble 
> to get "lifetime buy" parts.
> 
> I'm glad I still have a lot of MN3007's though because the S/N ratio 
> really is significantly better. I wish Shanghai-Belling had gone for 
> the PMOS versions instead of the NMOS, regardless of the advantages 
> NMOS parts have (faster clock speeds, but using a brutish clock 
> overcomes even this, I think maybe a little less distortion, but 
> PMOS distortion is GOOD...).
> 
> But I digress...
> 
> I just think it's a good idea to plan way ahead. Sure someoen who 
> wants to clone a BF2 is already set, and maybe I've overlooked 
> projects in the SDIY realm that use MN3207's.
> 
> Don't get me wrong, I'm not knocking Juergen Haible: his designs are
> sublime. I still wish he'd spill with schematic drawings for his Dimension
> 
> D. I have the factory schematic and boy is it more than a slightly 
> jacked-up Dimension C.
> 
> And ironically my plans to build a Dimension C instead of a 
> Dimension D have been thwarted by my not having any MN3207's. BUt I 
> don't have any HA1457's either...
> 
> aa
> 
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Harry Bissell & Nora Abdullah 4eva