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Moving to Horn speakers

Hi - i am new to the forum - 45, living in UK.

System: Gyrodec/incognito rb300/Ortofon FL25, CAT SL1 reference, Lumley M120 monoblocs, Proac Studio 150s.

Whilst I am content with this system - I recently had the fortune to hear a pair of Lowther equiped horns, on the end of an 8 watt SET - and was very very impressed. The feeling of being there was outstanding.

I have also seen on a web site a design for a Voight horn, which looks fairly simple to do. I would probably put a pair of second hand lowther units in them(PM6C ).

My question is - my monoblocs are 120 watts pentode/ 70 watts triode - and even in triode mode (my preferred option) will they not be too powerful for the horns.

The end goal - if I found I could live with the lowther horns, would be to replace the monoblocs with a high quality,low powered SET (probably DIY).
laurencedwyer
sean
6,231 posts
 
Part of the problem with these is probably due to their limited X max ( excursion ). Then again, drivers with a longer X max will also typically be of higher mass, hurting their high frequency extension and transient response.

As far as Lowther claiming these to be the most efficient drivers, they are WAY off their rocker. Sean
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dr_joe
160 posts
 
I'd say before you settle on Lowthers, see what other drivers and horns are out there. See also what other high sensitivity speakers are out there.

While I like Lowthers and other full-range drivers, I find them too "small" sounding and a bit restricted frequency-wise.

I advocate a compromise between multi-way systems and full-range drivers: coaxials. I use Altec and Tannoy, but there are others.

For me, after 30 years in hi-fi, the all-time best speaker buy is the Tannoy System 15 DMT mk II professional studio monitor, still a current model, which you can usually find used for $1500-2000: 15" dual concentric, 1.1 kHz crossover, 6 cu. ft., 100 lbs., 98 dB, 38 Hz to 25 kHz +/- 3 dB, 90° conical dispersion, fabulous detail and dynamics with famed dual concentric imaging. . . .

Just my two cents' worth.

Regards,

Joel.
twl
3,251 posts
 
Sean, just out of curiosity, what are the most efficient fullrange drivers? The highest I've heard of is the Loth-X "Stamm" driver, which is 104db/1w/1m. I've never heard them though. Is there something that is higher than that, which is not front-horn loaded? I'd be very interested in learning about anything higher than that, that could sound good in a fullrange direct radiator configuration, even with a back-horn loading.
zkidd
103 posts
 
My response is of a different nature. I live in the US and have a pair of Lumley Signature Reference 150 monoblocks. Could you PLEASE help me and tell me if anyone is still selling these and if there is any chance of getting a part I really need. One of my rack handles broke and the partial handle really detracts from the ability to move these (they are heavy as I am sure you know) and also it detracts from the beauty of these amps.

I would also love to get a schematic to help with any parts problem diagnosis, if there is someone who still carries/sells Lumley.

I truly appreciate any and all help. Thanks in advance.

Bob
ecclectique
509 posts
 
Your MFA 120's are very fine amplifiers especially in triode.You should compare them head on with a set amp "before" you make any amp change.Like push/pull amps,not all set amps are created equal and many have inherent liabilities.Driving my very efficient Tannoy Westminsters...my old mfa's[wired in triode]bested a whole slew of set amps. That said....MY preference is SET, however..I auditioned quite a few set amps that were not really in the same league as the MFA's
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