PING- Kuei Yang Wang

[Magnetar]

Thorsten - I have seen some old posting around where you either considered using or used the Beyma 15" coax - You seem to be about the only person on the internet that has considered these for hifi - (they are quite costly and way too BEASTY for the mainstream cone/dome people)Curious to which 15" Beyma driver you may have used, how you loaded them, crossover and general thought on results -

Have a nice pair of 15DX's - contemplating back horn loading them or maybe a simple helper 15 (have many) to compliment the bass below baffle step - the baffle can be up to 36" wide - so far I just have them on an open board - biamped - very promising BUT I need to put these monsters in a box- 45-50 cycles on the bottom is fine because I have suitable subs for below that - Any ideas?????

Data Sheet

[maxlorenz]

Cool

With a Qts of 0.43 maybe I can use it to build my dreamed Tannoy Autographs!?

http://www.users.bigpond.com/tunnelg...autograph.html
See the diagrams there. Also see the LF extension

HF is 2''

I don't have enough money to buy original Tannoy DC and was considering Eminence Beta CX15 but they didn't convince me. These seem better from here.

Where do you buy them?

Regards
Mauricio

[Magnetar]

Originally posted by maxlorenz
Cool

With a Qts of 0.43 maybe I can use it to build my dreamed Tannoy Autographs!?

http://www.users.bigpond.com/tunnelg...autograph.html
See the diagrams there. Also see the LF extension

HF is 2''

I don't have enough money to buy original Tannoy DC and was considering Eminence Beta CX15 but they didn't convince me. These seem better from here.

Where do you buy them?

Regards
Mauricio

I found a NOS pair on ebay for around 400 US - They used to sell for around 1200 US a pair - The 2" driver is very good - very close to the 4001 TAD but a bit more relaxed in the treble- I think it's due to the lower compression ratio. The drivers I have are discontinued but Beyma has some new 15 coaxials they just introduced with neo magnets - They may be as good or better. They are so new they don't yet appear on the website. Probably around 800 a pair - The 15DX was the most robust/expensive model.

From the Beyna site:

"As we announced before, Beyma attended the Plasa Show last September 2005 along with his distributor in Great Britain, Miltec.

New models in his wave guide line and new coaxial products were successfully presented there, being a novelty in his catalogue. Low frequency models of the series PRO, 5G40/Nd and 6G40/Nd, were presented as well in the neodymium version. "

That Tannoy horn cabinet is cool! - I can do something like that but I can use a 26" diameter round wooden tractrix horn I already have to load the front and build something like the "Big Fun" horn for the back - That's what I keep coming back to! It should be awesome sounding

http://profesional.beyma.com/ENGLISH/producto.php

[DeonC]

Hi Mag

That Tannoy horn cabinet is cool! - I can do something like that but I can use a 26" diameter round wooden tractrix horn I already have to load the front...

I would suggest trying both the standard conical and your tractrix horns on the front. The reason I say this is because I know someone who has a pair of these. He went from the original design to something like a tractrix for the front (to be honest, he used the shape of a toilet seat to get the curve for the horn). He regrets the change and wants to go back to the original two-step conical shape. The problem with the curved horn is that it throws to image up to the ceiling. With the original conical horn he had normal imaging.

Enjoy,
Deon

[maxlorenz]

Magnetar:
At 800 they are not far from Tannoy's DC.
I found this one: 15XA38Nd, It looks interesting but I can't find any big Beyma to figure how much they cost.

Hi DeonC:
How is your horn sounding?
Sometimes I think I will never make my Autograph's (and I have cheap wood source and cheap artisans) , involved in so many projects, amps, DAC's. As we say around here: "braking things, one learns" or something like that (it looses humour in translation)

Good luck, you...lucky ones

M

[Magnetar]

Thanks to those that replied = I decided to soffit mount (Studio monitor style) these directly flush into two of my three (wall sized) sub bass horns. They should go down pretty low on their own and be plenty efficient (sealed back chamber) and I don't need to worry about baffle step one bit - they also will be closer to the subs (real close!) and take up ZERO floor space....... this has to be the easist project I have ever done -

PS- I highly recommend these drivers. Mine have around 300 hours on them now (in temporary reflex cabinets) and are truly first class. I am very happy with them in all respects. They sound good at all levels and have no problem reproducing a drum kit - I figure the gain of flush soffit mount will take them into the dynamic range and sCaLe of fully horn loaded territory without the SIZE and other horn related problems.

[ThorstenL]

Konnichiwa,

Originally posted by Magnetar
Thorsten - I have seen some old posting around where you either considered using or used the Beyma 15" coax - You seem to be about the only person on the internet that has considered these for hifi

I used earlier versions in stage monitors, as well as smaller PA cabs, they sounded excellent and I thoght them better than the Altec & JBL coaxials found in Urei Monitors.

I'm no longer allowed any really big speakers (funny, she kind of liked the big tannoys BEFORE she moved in...) nothing even came of the Beyma's...

I would probably be tempted to place them soffit mounted into false walls (ideally brick build) if I had the chance, or stick them into autographs. In vented boxes they do not go that low.

Sayonara

[Magnetar]

Originally posted by Kuei Yang Wang
Konnichiwa,



I used earlier versions in stage monitors, as well as smaller PA cabs, they sounded excellent and I thoght them better than the Altec & JBL coaxials found in Urei Monitors.

I'm no longer allowed any really big speakers (funny, she kind of liked the big tannoys BEFORE she moved in...) nothing even came of the Beyma's...

I would probably be tempted to place them soffit mounted into false walls (ideally brick build) if I had the chance, or stick them into autographs. In vented boxes they do not go that low.

Sayonara

I have the luxury of having my own room - my wife likes me to stay down there lots- The soffit mount seems like a killer solution for these. In my reflex boxes they are good to around 65 cycles BUT have serious baffle step thinness in the low mids - Kinda sound like refined mini-monitors on steriods.

Peace,

[DeonC]

Hi Max

How is your horn sounding?

Not mine. I wish!! They belong to a friend of mine (a guy called Chris Templar).

Sometimes I think I will never make my Autograph's (and I have cheap wood source and cheap artisans) , involved in so many projects, amps, DAC's. As we say around here: "braking things, one learns" or something like that (it looses humour in translation)

They are worth it from what I heard at Chris' place. Hard to make, but hard to find anything comparable (unless you have a rig like Magnetar's). Chris has another pair here in South-Africa that have been completed an just needs a buyer, but I don't have the space or the funds to accomodate them. Ah well, maybe some day. A man can dream.

Enjoy,
Deon

[Magnetar]

Originally posted by Kuei Yang Wang
Konnichiwa,

I would probably be tempted to place them soffit mounted into false walls (ideally brick build) if I had the chance, or stick them into autographs. In vented boxes they do not go that low.

Sayonara

I have them mounted in the 'soffit' bass horn wall where the back chamber is using part of the unused back chamber for the JBL 2242H subhorn drivers - It really worked out well, the 2242's required a smaller back chamber (original was 7.5 cu ft) so they have approx 3 cubic feet behind them. They ended up being centered at 38" off the ground. They are going down to 60 cycles now with excellent upper bass/low mid power and resolution. The 'wall' baffle also has excellent imaging - much better than using the little 22" BR boxes out in the room -never thought that would be much of a benefit. I'm still trying different crosovers - look like 850 cycles 4th order is pretty close to ideal. I'm thinking I'll high pass them at 100 cycles and use the two outside basshorns for stereo bass and the center will come in at 35 in mono. That should give a bit more PUNCH, headroom and power as well as lower the bass and midrange distortion. It will then be quad-amped. I like this setup.