Questions regarding hacking a Yamaha BC2 magnet

[Theo]

----- Original Message -----
From: Tom May <tom at synth-diy.you-bastards.com>
><snip>
> I'm guessing this BC2 is from the DX7 era
> and so could have lost some magnetism over time.
>
The BC2 was introduced at the same time as the VL1.
A magnet loosing strength in merely 10 years looks a little quick to me.

> The reason I think it's weak is that I've got to turn the gain all the
> way up to get a reasonable response curve.
>
This sounds like a BC2 alright, only the upper range of the potty is use
full.
If the gain is really weak, you may look for other causes.
I've had similar problems, turned out the connector on my DX was oxidized.

BTW, I found that not all BC work well with all synth models.
DX100 and DX 27 seem to be among the trouble makers.

Hope this helps,
Cheers Theo