Eton with Excel

[michaelpage26]

Is it possible to crossover the Seas Excel M15CH001 with the Eton 11/581 at 250Hz? I would choose the Excel W21 EX 001 but I am scared of its Mms 25 g - (not fast and detailed midrange ?).

This could be 2x Excel M15CH001 with 2x Eton 11/581 per cabinet.

[michaelpage26]

Here's the picture of both:

[5th element]

I wouldnt worry too mucj about using the SEAS excel mag with the M15CH. Linkwitz uses the 8" all the way up to 1500 in the orion and that is meant to be one of the best loudspeakers you can get.

Also people use midranges crossed over at 250hz to 10" bass drivers with moving masses of twice the SEAS 8" driver and even more. Dont worry about it.

There is the issue of matching however, I do not know the sound of the poly mid or how it would match tonaly with the mag excel or the eton. 250hz seems to scream danager to me when crossing two drivers that could sound very different.

I'd like to see some opinions from people who have used the poly mid and thier comments on its sound, appart from good, what are its characteristics.

[Sherwin]

This works very fine, my system.. (audio components will be replaced within a half year)

I use the m15ch001, and only i can say is that this midunit is one of the best midunits i ever heard. (very neutral, very fast, very dynamic, high dynamic power handling)

Cheers,

[Vigier]

The only thing I would think twice about is the crossover frequency of 250 Hz. The Xmax of the M15 is VERY low (about 1mm linear each side), and at a few hundred Hz you'll reach that very soon

What's you x-over frequency Sherwin?

Grtz, Joris

P.S. Sherwin: you know who I am

[michaelpage26]

I think it matches really well: Ascendo M 32,000$ (look at the photo)
But it uses the 8" with the 11" Eton.

Sherwin, with your 275/300Hz crossover had you got any x-max problems? How loud do you listen? How is the mix with the focal 11", can you see phase problems or anything?

Could I cross the Eton 11" drivers higher? (e.g 300hz)

[michaelpage26]

Thanks for the help guys,

Sherwin what did you mean with changing your audio components? Are you not satisfied with these loudspeakers?
Can you name some other really good midranges 5-7" like the Excel M15CH001, that you have heard too?

Hobby-hifi in a test refered to Excel M15CH001 as the best in the test and one of the very best for the magazin. In the test also Audax PR170Z0, Focal Audiom 6WM, Focal 7k6411 took part.

[Variac]

It seems that you just HAVE to use that seas M15CH001 mid open baffle.
Why?, well because I want to and you could tell me how it works...

With the tiny magnet structure, lots of reflections would be reduced. Open baffle- absolutely.

[Vigier]

Isn't that what the Ex-Motion (I don't know if this is the correct name) has?
It has the M15CH001 and the Excel Millennium tweeter, both open baffled, together with the W26FX001...

A wet dream...

Grtz, Joris

[Sherwin]

Dear People,

I cross the m15ch around 275hz with 12db/oct, and there are no problems. The real Xmax of the m15ch is bigger then the lineair Xmax of 2mm (this Xmax is for the extremely low distortion levels).

We have also measured the distortion levels, and there's nothing to worry about.

I have tested the top sections with bypass (so the midrange get's the full range near the lower frequencies) as a 2 way, on a listinening event, and there also where no problems (funny).

(Audio components switching, i ment that i was intended to buy new audio equipment like a new amplifier and cdplayer within a year of a half)

Cheers,

Sherwin