Advice needed: 3-way Horn speaker build.

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I've been reading the posts here for the last few years, first off thanks for all the advice.

I was drawn to the sound of horn speakers by the Avantgarde Duo's a few years back. I'm aware I will not likely be able to create this sound but getting close would be my goal.

I've been reading up about various drivers and horns for a long while but will be buying without being able to hear them. My reference at the moment are PMC Twenty.21 + DAC V1 + Naim NAP 100.

I'm looking to build a 2-way, horn + high efficiency 12inch mid/bass. I'm also up for the challenge of building a 3-way slot tweeter, horn, 12inch mid/bass if that's the better way to go.

In terms of space to work with, the units ideally can't be wider than 40cm or deeper than 40cm. Visually I've always been a fan of horns like the JBL 2345 / JBL 2397 and the way I'd want to go with this build.

My budget is £2500-3500 for drivers, horns, XO and cabinets. Amplification on a separate budget. I have a minidsp which could also be used in this build.

It would be great to get some thoughts on possible combinations and any recommendations to recreate the sound I'm looking for.

Any help much appreciated.
 
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Performance Match to a Duo is Not Likely

The drive units of the Duo are designed to cover the audio spectrum in three one-decade segments. Performance of the midrange horn driver is the key to the success of the Duo and will be nearly impossible to replicate using non-Avant-garde drivers.

The midrange horn required will not fit within the 40 cm³ envelope you are specifying. The Duo's first c/o point is at 170 Hz. from a pair of 12" bass drivers. To cover the second decade requires a big horn.

Recommend you audition and pick a system to emulate that fits the footprint and budget you have in mind. Otherwise, build big midrange horns and buy a pair of M2 Omega drivers for them. The rest can be replicated, but not without a lot of BSAT.

Regards,

WHG

Duo Reference:
file:///C:/Users/Cereza/Downloads/DUO-XD_Fact%20Sheet_Engl_V1-4.pdf
 
URL Corrected

The drive units of the Duo are designed to cover the audio spectrum in three one-decade segments. Performance of the midrange horn driver is the key to the success of the Duo and will be nearly impossible to replicate using non-Avant-garde drivers.

The midrange horn required will not fit within the 40 cm³ envelope you are specifying. The Duo's first c/o point is at 170 Hz. from a pair of 12" bass drivers. To cover the second decade requires a big horn.

Recommend you audition and pick a system to emulate that fits the footprint and budget you have in mind. Otherwise, build big midrange horns and buy a pair of M2 Omega drivers for them. The rest can be replicated, but not without a lot of BSAT.

Regards,

WHG

>snip<

Duo Reference:
https://www.avantgarde-acoustic.de/...und-fakten/en/DUO-XD_Fact Sheet_Engl_V1-4.pdf
 
Have you listened to any of the BMS coaxial compression drivers? Some listeners favor the wide frequency point source coherence of the 2" exit BMS 4592Nd and 1.4" exit BMS 4592Nd over any pressure wave mixing imperfections which are generated in the horn. A lesser evil compared to T-M multiple horn lobing?

One example: Bert Doppenberg uses the BMS 4592Nd, and has a discussion forum on his website. To support ~300Hz, Bert Doppenberg's Orphean horns are 55cm in diameter at their mouth and 61cm long with BMS. Bert Doppenberg uses a passive crossover for the time-aligned tweet-midrange on the BMS 4592Nd, and a woofer amplifier with integrated DSP capable of both Hi-Lo crossover and room equalization.

DIY Orphean
 
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