dual concentrics? where can i get some?

[Brett]

When it comes to speakers Tannoy (now part of TC Group) owns the trademark for 'dualconcentric' since 1947 when they released the first one. No other speaker or driver manufacturer is allowed to use that term for their drivers.

I'm not seeing how DIYers using the terms interchangeably matters squat. Tannoy going to send 'cease and desist' letters to us all?

 

[Brett]

Sorry , I have no idea ! In France and Germany it is common to see Ciare's big woofers
selling on the web . What I found on the site is the address where to send this kind of (straaaaangeee) requests .

commerciale@ciare.com

Thanks anyway, I thought local (EU) knowledge might have had a direct source. I shall email and ask anyway. Cheers.

 

[mondogenerator]

When it comes to speakers Tannoy (now part of TC Group) owns the trademark for 'dualconcentric' since 1947 when they released the first one. No other speaker or driver manufacturer is allowed to use that term for their drivers.

Yes. Accepted. however in linguistic terms the word can be applied just as well.
since im not going to build a co axial, and call it dual concentric, TM hardly bothers me. 😀

however youve brought a fair point. Maybe other 'not strictly dual concentrics' by other manufacturers would be found, if i googled 'co-axial' instead....hmmmmmm🙄

the only tannoys ive seen so far i like the general size etc are cms501 and cms501dc

Ive got no idea if theyre any good though? has anyone got any experience of these things?

 

[Charles Darwin]

I'm not seeing how DIYers using the terms interchangeably matters squat. Tannoy going to send 'cease and desist' letters to us all?

Just a little factoid I wanted to throw out there.
For non-commercial use it really doesn't matter, very much like most people call a vacuum cleaner a Hoover.

 

[Charles Darwin]

Yes. Accepted. however in linguistic terms the word can be applied just as well.
since im not going to build a co axial, and call it dual concentric, TM hardly bothers me. 😀

however youve brought a fair point. Maybe other 'not strictly dual concentrics' by other manufacturers would be found, if i googled 'co-axial' instead....hmmmmmm🙄

the only tannoys ive seen so far i like the general size etc are cms501 and cms501dc

Ive got no idea if theyre any good though? has anyone got any experience of these things?

Almost all manufacturers of pro drivers I had a look at makes co-axials of some sort.

Can't say much about CMS501s, classic 10" are the smallest I ever considered and 12" 3149s are the ones I ended up buying… twice.

 

[Charles Darwin]

How about these ones: http://profesional.beyma.com/ingles/pdf/6CX200Nd.pdf

from these people for £102+vat: LMC Audio Systems Webshop

 

[Defo]

How about these ones: http://profesional.beyma.com/ingles/pdf/6CX200Nd.pdf

from these people for £102+vat: LMC Audio Systems Webshop

Beyma's frequency graphs are really deceiving... What you really see there, is wide band peaks and dips of as much as 10 db...

 

[CLS]

?

I once asked, some graphs in Beyma's datasheets look too good to be true, then someone answered that Beyma is quite honest... No?

Look into the 6CX200Nd mentioned above, the HF section does have a dip/peak around 2.5k ~ 3kHz or so, that's approaching 20dB in total ! 90dB@ 2.5k -- 108dB@ 3k.

On other graphs, it looks +/- 5dB in most of it's operating range.