Lowther in a two way?

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M

magnetman

Member
Joined 2011
Hi all,

I have been rummaging around in the literature a bit more, what do we think of Lowther DX3 with a 14" or 15" woofer for bass extension? I was Looking at Jbl's and the like. I think I want a low power rating high efficiency speaker old new dosn't matter. 9 watt SE 300b amp driver and will eventually bi-amp.

Any thoughts? any links?

regards
 
M

magnetman

Member
Joined 2011
thanks sreten,
Thats the stuff, I have seen this idea in open baffle too, However I have a wife and shes not keen, so im thinking maybe have a bass enclosed and the Lowther open. see if i can get away with that.

also I'm not closed to the idea of a smaller driver in the bass any suggestions are welcome.

cheers
 
S

sreten

R.I.P.
Joined 2003
Hi,

Personally I'm no Lowther fan, but for an 8" FR IMO you need a 15" bass.

Though FWIW the Seas :
http://seas.no/images/stories/prestige/pdfdatasheet/H1597-08_FA22RCZ_Datasheet.pdf
http://seas.no/images/stories/prestige/pdfdatasheet/fa22rcz_appnote.pdf

Has far more bass excursion than most 8" FR's.

With the recommended LR filter done at line level is an interesting prospect.
(A LR filter at speaker level is a complete waste of expensive valve watts.)
see Baffle Step Compensation for the basic circuit.

100L tuned to 30Hz looks interesting over the recommended 70L sealed.

A lot wackier and a lot riskier is :
http://www.diyaudio.com/forums/full-range/182858-anyone-built-decca-corner-horn-tqwp.html
I'd make a corrugated cardboard prototype (use any poly paint / vanish as glue / surface stiffener )
to a) see what it sounds like, b) understand the real issues / possible mistakes, of a proper build.

rgds, sreten.
 
Last edited:
W

whgeiger

Member
Joined 2004
WCW

magnetman said:
Hi all,

I have been rummaging around in the literature a bit more, what do we think of Lowther DX3 with a 14" or 15" woofer for bass extension? I was Looking at Jbl's and the like. I think I want a low power rating high efficiency speaker old new dosn't matter. 9 watt SE 300b amp driver and will eventually bi-amp.

Any thoughts? any links?

regards
Click to expand...

A good idea for a Lowther WCW solution. Without the W's the C imposes a premature displacment limit on system performance. Note that the Lowther is a particiular varient of a coaxial driver (C) that uses a mechanical crossover (second compliance) between a whizer cone and an outer LF diaphragm. There are others that incorporate a separate central tweeter that requires its own drive signal. This later varient holds the potential to yield a superior performance.

Regards,

WHG
 
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