I haven't made a decision as of this time but I am planning on replacing my JBL 2380A horns with clones of either the Yuichi A-290 or TH-4001. The drivers in use are Radian Neo 950 FB / 16. (Recent upgrade from JBL2440)
Athos for either A-290 or TH-4001:
AthosAudio - Passionate about wood and sound
They also sell on eBay and have a good buyers rating. Located in Hungary shipping is a bit pricey, but manageable.
MAKA for Yuichi A-290:
Homepage - MAKA Precision Horns
Located in Holland, likely a bit quicker and a little less expensive to ship.
I've heard of both, have no direct experience with either.
Athos for either A-290 or TH-4001:
AthosAudio - Passionate about wood and sound
They also sell on eBay and have a good buyers rating. Located in Hungary shipping is a bit pricey, but manageable.
MAKA for Yuichi A-290:
Homepage - MAKA Precision Horns
Located in Holland, likely a bit quicker and a little less expensive to ship.
I've heard of both, have no direct experience with either.
Why not? My system is horn based. I'm looking for an upgrade over the 2380A which is not good below 700 - 800Hz, and is made of structural polymer. Do you have an alternate suggestion for a horn with 90 - 95° H dispersion, and 40° V dispersion that works well over a range of 600Hz - 10kHz?
I might add the RH-3 to the discussion.
I might add the RH-3 to the discussion.
MAKA gone or never got going?
Looks like MAKA is not an option, their contact email bounces, and nothing on the site actually works.
Looks like MAKA is not an option, their contact email bounces, and nothing on the site actually works.
I purchased mine from a vietnamese seller on ebay. I believe they come from a renown hifi shop there. (picture as part of my test setup) I am still contemplating what enclosure would fit well with my faital 15pr400 both esthetically as performance wise.
Link:
Wooden Horn Yuichi Arai A290 - for 2'' horn TAD 4001/4002, JBL 2446/2450 | eBay
Link:
Wooden Horn Yuichi Arai A290 - for 2'' horn TAD 4001/4002, JBL 2446/2450 | eBay
The 2380a is used to 400hz in the strauss mf 2.1...but you set the criteria, it sounds like you just want lower horn loading? I once theorized that Horn resonance above a particular frequency does not need to strictly abide by the rule of keeping bandwidth within them, 1.5-2 times the Cutoff....The strauss proved my point....the 950 can be ran to 400 in that horn as well... The missing factor in design is the thiele specs of compression driver (apparently comsumers dont deserve that type of information) Makes zero sense why they're not shown just like dynamic woofers... I invite you to simulate a horn tuned to the same cut off as your 2380a and a mock parameter of your compression, within hornresp...youll see that a 4" diaphragm on this horn can in fact make it to a 400hz xo, excursion wise.... if I were to play devils advocate I would believe that the cumulative Spectral decay would be better, following the 1.5x cutoff rule...yet the Strauss 2.1, mastering monitor at that, seems to care or not. Group delay would see a bump at the tuning frequency but either you can, not care, not hear it, or null it out with dsp, but again when the tuning note is high ( 350hz and up?) its detrimental effects start to become a non issue the higher you go...waveguides are proof as well as the tiny 3d printed traditional TL someone did on youtube that had no harmonic cancellations
If in a pa setting then this would play out differently, we are talking about playing at domestic levels
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Jacek is an active member on the board, I forget his alias, he is currently manufacturing horns for people at a modest price. Id check him out, Ill find his alias for you.
Nice! The Vietnamese horns I believe are excellent quality, but quite expensive. Whatever I end up with will sit on top of my Onken bass cabs.
The horn he is making is the A-290 FL which is more suitable for larger rooms than mine. In addition he does not offer throat adapters, I'm looking for something as close to turn key as possible. He's just a bit more expensive in general than the options I have been considering, and a fair amount of work is needed to make them ready for use.
Because they are excellent design and sound excellent as well. Nearly perfect loading and horizontal dispersion. I have a pair of TH4001 and are very satisfied with them.
The plans in those are the ones i used to draw the Yuchi.
The other info is very useful.
dave
I use Iconic 165-8G which is basically the same drive that GPA now sells as the 515-8G. My father in law and I build the cabinets back in 2006 and I did make a design choice that was not the best. Originally I through I was going to mount the mid range driver in the cabinet above the woofer and so I left space for it. I was using the 2391/2392 with 2308 lens at the time and concluded it was not going to be the long term solution - had I known I would have mounted the woofer higher in the cabinet.
There are a number of Onken threads here on diyA and if you search you should be able to find my project. Cabinets excluding the ports are about 11 cu ft (311 liters) in volume, the ports total about 1 cu ft. Internally they have 3 walls covered with 1cm thick felt (carpet backing made of natural animal fibers rather than synthetic, mostly wool) They are made of 95% void free baltic birch plywood. Some internal bracing on baffle and rear panels, heavy cleats front and rear. Baffle is permanently secured from the inside with construction adhesive and screws. Each one weighs >140lbs (64kgs) with the driver installed so I move them infrequently.
The cabinets tuning is in the low 30Hz region, and the R value 2 - 3 ohms (essentially amplifier source impedance.) I no longer remember all of the other details.
I'm happy with them, not perhaps the prettiest ones I have ever seen, but they do work well. (Better than anything else I've owned)
