Lowther cabs (BD-Design)

by GC, Saturday, February 05, 2005, 20:42 (4730 days ago) @ GC
edited by GC, Thursday, March 31, 2005, 21:08

Thanks Bert,
Interesting you should have heard a pair.
Opus One have two models, A & B. You probably heard B? Just guessing. They need solid corners.
Drawings on Lowther CD are all revised. Opus One have dwg format for large printing.
A Swedish enthusiast built Opus One B. His corners are not strong,
he's missing bass, but otherwise very happy with the sound.
I'm trying NOT to add a subwoofer. Only 15w amp - class A transistor.
I'll study the plans more and see how I feel in a few months. I'm using EX4 -I know you have reservations about them, but I find them really good.
Many thanks.

Since I don't have that, I'm advised that Opus One A are the cabs to

make,

since they perform well without the solid corners.


Hi Terry,

I have heard the Opus One (in solid corners) using PM4A drive units (long
time ago). These do go low but more -12 to -18dB....

The owner recently replaced his Lowther PM4 drive units because he wanted
more body in the sound. These enclosures are a lot of work to put together
(the drawings are also not 100% accurate).

The Acousta enclosures give the most body to Lowther drive units (besides
the Carfrae LBH horns...), the longer the horn gets the less body in the
lower midrange will be left to enjoy.

If the tonal balance of your Acousta's is okay and the lacking bass is the
only problem then keep them and add a subwoofer...

Ciao,

Bert

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