AER Diaphragms (BD-Design)

by GC, Tuesday, April 12, 2005, 13:40 (6953 days ago) @ GC

Hi Mark,

I have a pair of PM4As with the AER diapraghms in my Oris 150's back in
New Zealand that sound fantastic being powered by a 45 SET that uses a
pair of your Old Brown Dog output transformers. I'm missing them very much
while I am living in France for work, but a good friend who is looking
after them does not seem to be complaining ;-)

Hope all is well with you. Are you still making the transformers? I
promised I'd send you a photo of the amp. I'll post a photo here.

Regards,

Russell

Hi Russell yes I still wind OPT's but not very often - enough to satisfy my own needs! But OBD is still alive and well!

Well I never got to make the OBD logos for your T-Shirt either! ;)

I need to look into these new diaphragms but I am doing some experiments at the moment as I have a fare number of standard Lowther spares for my 2A/4A's as well as a pair of the new Lowther reverse roll diaphs which I don't like.

Essentially I am trying out a reverse roll on a standard whizzer - I'll post some pics one of these days!

The new Lowther reverse roll diaph has a 5mm reverse lip made out of the standard whizzer template which means the whizzer is now effectively 5mm shorter.

What I have done this weekend is add on a 5mm reverse lip on a standard whizzer cone - we shall see....

If that does not cure the remaining "Lowther Shout" then I will be up for a pair of AER's

Best

Mark

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