Electrovoice 15" plus horn for hifi?

[ozziozzi]

I have just acquired a pair of Electrovoice EVM-15 and associated XOs and "brandX" compression drivers with horns (approx 9"X2") in large floor wedge monitors. I would like to put them into a more WAF enclosure. Any opinions/suggestions on how these might work in a lounge room hifi application. Would they be better in ported or sealed box or maybe open baffle? Are evm-15L similar in spec to other pro-audio drivers so that I might adapt known designs for these drivers?
Thiele-Small parameters for the EV as follows.
Fs: 43Hz
Qes: .250
Qms: 4.96
Qts: .238
Vas: .245 m3
n0: 6.2%
Vd: 17.2 in3 (282.2 cm3)
Sd: 132.6 in2 (855.3 cm3)
Xmax: .13 in (3.3mm)
Pe: 200W
Re: 5.2 ohms

[ozziozzi]

I forgot to ask. Just how small a sealed box can I use for the EVM-15L if I am not too concerned about going very loud.

Ozzi

[d to the g]

There's a published front horn for the EVM 15. There's a wide range of what passes WAF... the FH sure wouldn't pass it in my living room, but it looks awesome.

[ozziozzi]

I guess what I mean by high WAF is a tallish rectangular enclosure with, maybe, a curved front to look more "sculptural", as small as possible in volume or at least in the front dimensions. Of course nice oiled satin or gloss veneered surfaces are assumed and drivers should not be obvious to the casual observer, but hidden behind an attractive cat-proof screen ;-)

[sreten]

Hi,

They are far more suited to their current purpose than domestic hifi.

For domestic they only make sense for low powered amplifiers, to get any
real bass you would need large ported enclosures, sealed will have no bass.

For big I prefer cuft (28L). Vas is near 9 cuft, Qts 0.24, Fs 43Hz.
You can go as low as ~ 33L for sealed, but again there will be no bass.
3 cuft tuned to 45Hz looks a lot better (and is a lot bigger).

For the sizes you can get far more bass albeit at lower sensitivity using
drivers intended for domestic / studios, so only realy suited to flea power.

/Sreten.

[srinath]

I believe the EV15 inch wide horn was used by jbl and klipsch - it was called a t35 or t350 if I recall. I have one of these and a 3X5 horn and a 12 woofer in a monstrousity of a cabinet.
Cool.
Srinath.

[chris661]

Depending on the amplifier, would applying a Linkwitz Transform (or other bass eq) be an idea for a small, sealed cab? It was said that SPL isn't an issue.

[indianajo]

The 15" woofer plus piezo horn is a popular format in packaged multi-way speakers. The Peavey SP2 goes down to 43 hz with an apparently sealed box, best bass speaker I've ever owned. Crossover is 1200 Hz. See the following post in multi-way that everybody found uninteresting. http://www.diyaudio.com/forums/multi...who-first.html

[serenechaos]

Originally Posted by d to the g

There's a wide range of what passes WAF...

I tried a pair of these drivers in Klipsch Lascalas.
The cab resonance was pretty bad, many bad comments from the wife.
I played w/ the sims in horn resp, and they would sound a LOT better in front horns, about four foot long.
The wife is all for it...
What "pass for WAF" is what sounds good where I live...

[ozziozzi]

As Sreten suggested "3 cuft tuned to 45Hz looks a lot better (and is a lot bigger)." 3cuft = 5184 cu inch so one possibility is 17"W x 36"H x 9"D (internal) built of 1" ply that ends up as 18"W x 37"H x 10"D-- still not too big. I currently have 12"W x 39"H x 6"D boxes and they are acceptable, even with exposed drivers!!

No-one has mentioned the possibility of open-baffle or aperiodic enclosure for these drivers. The *first* thought I had was something similar to the Visaton design "Nobox"
[url=http://www.visaton.de/en/bauvorschlaege/breitband/noboxbb/bauanleitung.html[/url]

I have read that aperiodic is the way to go for smaller boxes - any comments?