AG 301?
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I use his ES290 horn with a BMS 4592 coaxial driver. It is basically a development of the Yuichi A290.
I got them made from the diy plans he sells for those who donāt want to pay the Ā£4,500 asking price for the ones he makes from solid wood.
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I wasnāt meaning the subjective sound quality.
I meant the inefficiency of the speakers requiring a 160Wpc amp.
Bloody expensive in Class A
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That was my first thought,but donāt know
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If you are dropping Ā£76k just on the speakers you are unlikely to be on a prepay meter.
Actually Keith I have been looking at that this week.
Did you just get a STL file? or did you have an Agis or Step file as well?
Im not a fan of the unnecessary large flat top -lots of additional material
cheers
Andy
I find I am drawn to the 2087 system
At Ā£32,300 a pair plus shipping, and more than a metre high and wide, I will be struggling to get anywhere near them, but they look the part
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Iāve been tempted by his CAD files for ages - My plinth guy could do them no problem
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It was Steve Rodomski from Sheffield who did mine. They were just from the cad files mentioned above.
Mine are made up of layers of ply rather than the solid wood that JC uses.
In fairness probably not the speakers fault, they were fairly efficient. The gryphon can at least be run in some various more power efficient ways. It has various bias modes
87db isnt efficienr.
Over 90% of power output dissapated as heat across voice cails.
Donāt see any sense in 150W ClassA amps with all the heat and cost.
For the money that system cost you could get a very nice horn system and a lovely 2W amp.
Different ways of doing it of course.
But I have heard a lot of expensive systems and there are no inefficient speakers with muscle amp systems in my top 10.
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I know Iām being pedantic but, I believe, the rating being discussed is the speaker sensitivity. I understand they will undoubtedly have low efficiency though based on the power conversion mentioned by Kev.
Only horns, all the time, forever and always x
The best trad cat coffin speakers Iāve heard were the TAD Reference One, and as capable as they were, it was still very hifi which I guess a lot of people like/ look for.
Iād still take Chrisās horns up thread over a pair of those TADs or any other cat coffin box every day of the week.
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Kudos 505 or Neat Ultimatums are on my list but I think both are not really all that inefficient though.
Far worse that that. 87dB is about 0.3% efficiency. So 99.7% of your ampās power goes into warming the voice coils, causing power compression and ruining your dynamics.
Manufacturers generally quote sensitivity (dB / 2.83V) rather than efficiency. 2.83V into 8 Ohms = 1W, so if the speakers are the standard reference 8 Ohm impedance, then the numbers are equivalent. Often modern speakers are 4 Ohm, so the efficiency is actually 50% worse ref. the sensitivity.
Regardless, your average cat/dog coffin box speakers are horrors.
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Ah, I had thought the efficiency figure was always worse. Thanks for that 
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The certainties in this thread are that 1. boxes will get ripped a new one, and 2. Wayne needs compression drivers. 
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Really! 