Jupiter-8 part needed

[Trevor Page]

Hi,

I recently obtained a number of BA662A's from Roland in the UK without
problems - but I did have to specify a Jupiter 8. So there's plenty in the
UK branch. Their computer came up with nothing when I specified the part
number that appears in the TB303's user manual.

Trev


----- Original Message -----
From: Tony Allgood <oakley at techrepairs.freeserve.co.uk>
To: DrTempus <drtempus at home.com>; <synth-diy at node12b53.a2000.nl>
Cc: <analogue at hyperreal.org>
Sent: Tuesday, June 20, 2000 10:29 PM
Subject: Re: Jupiter-8 part needed


> Hi all,
>
> Allen wrote> I am looking for Roland part number 15229802 generally
> called: BA662A or B. Roland US said they don't have any.
>
> Do try Roland again. Certainly Roland UK did have them the last time I
> looked. But try asking for BA662 and say it comes from a SH-09. The part
> number computer at Roland UK can be very peculiar. Certainly if you ask
> for BA662 from a TB303, you get no supply. A JP8, however, comes up
> trumps. If the JP8 has failed this time, try another synth.
>
> On the other hand, it is not difficult to get a BA6110 made by R-Ohm to
> fit. This is an updated and improved part, the orignal 662 was made by
> R-Ohm for Roland it seems. It has different pin out but it is possible
> to use the new part with a bit of a cludge.
>
> You have to handy with a soldering iron to do this. See the 2nd page of
> the TB3030 schematics on my site for details on this. This shows how
> either part can be used to make a typical Roland VCA. The BA662 and 6110
> do sound the same, so long as you don't use the compensation network in
> the input of the BA6110.
>
> www.techrepairs.freeserve.co.uk/projects.htm
>
> Regards,
>
> Tony Allgood  Penrith, Cumbria, UK
>
> Modular synth circuits, TB303 clone and Filter Rack
>
> www.techrepairs.freeserve.co.uk
>
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