room size for big monitors ?

[rs237]

hello,
before I start my new Projeckt , I have a question. Does it make sense in an room of 4m X 4m (13ft X13ft) large monitor Speaker (JBL4355, JBL4435, EverestII) to operate ? It would be beneficial to Speaker in the wall to install? If so what would be the best amount?
Every opinion is welcome.

thanks

juergen

[Ian Mackenzie]

No it does not make sense but we do it any way.

What out for room mode if it is a square room.

[Andyoz]

I'd do it but definitely "soffit" mount them.

You're gonna need some low-freq absorption in that room so make sure you are not putting them in the typical masonry/concrete bunker so common in the EU.

[Hoerninger]

And watch for early reflections, some dampening at the walls will be necessary to avoid them. The room is not a big one.
My next listening room, mainly an office, will only be slightly bigger 14ftx14ft, so I will look at your results.
____________
Peter

PS: Possibly interesting by INFINITY:
Floyd E.Toole: Loudspeakers and Rooms - Working Together
http://www.harmanaudio.com/all_about...kers_rooms.pdf

[edgewound]

Since you welcomed all opinions...

I would find it a futile waste hard earned money and efforts to put such big speakers in such a small room unless your goal is to entertain the neighbors.

I'm not trying to be sarcastic....just put things in practicality. To actually enjoy what the 2245 can do, I think you need to be at least 20 feet away from it in a hi-fi scenario. Even a 15" woofer in that small a space is pushing it.

But as Ian said..."we do it anyway". To me a 4345 in a home situation should go in the living room, not the bedroom/small den.

[Robh3606]

I have heard 4350's in a room almost the same size maybe a little longer. The biggest issue was placement. With cabinets that size, what almost 4 feet wide, you have almost zero options and that goes for Soffit mounting as well. You want to get them away from the side walls, toe them in and have a reasonable distance for the drivers to integrate properly. Clearly the size is working against you. Why not 4430 or a 4435 in a verticle alignment. 4344's possible as well??

Rob

[rs237]

Grateful to all who responded. I have already feared, but wanted to hear your opinions.
@ Rob
No one smaller Speaker should not be, then I must find a bigger room
or 4435 in a verticle alignment....
Perhaps can be room on 4m * 6m (13ft * 20ft) extend.
@ Peter
thanks for the link.
@ Ian
I understood you correctly "square its bad"?
@ edgewound
It would 4m * 6m (13ft * 20ft) better?
@ Andyoz
"Low-freq absorption" yes I have just in my Hartsfield room experienced

regards
juergen

[edgewound]

For the 4345's...if you can build a bigger room, by all means build it. You can do far more things with more space.

The Floyd Toole room mode calculator puts a 20 foot room at a 28hz room mode...that would be 4345 territory....a little bigger would be even better.

Your 13 foot room would be at about 43Hz. You'd only hear the bass outside the room. What fun is that? It's the same acoustic concept as a car with massive subwoofers inside that can't be heard in the car, but everyone else at the stoplight is ready to kill the SOB.

[edgewound]

I think the notion of an Americam typical living room is different to Eu or anywhere else. Besides, the average control room is of this size or less but as discussed used an lot of LF absorbtion.

Hey...well these are big American monitors that went into big American control rooms of 450 square feet and larger. Why skimp if you can do it right from the start?

[readswift]

http://www.gedlee.com/downloads/Cum%20laude.pdf

Geddes on room modes. (Summa is 15" B&C LF and 15" waveguide - "optimised for small rooms" )

[rs237]

For the 4345's...if you can build a bigger room, by all means build it. You can do far more things with more space.

The Floyd Toole room mode calculator puts a 20 foot room at a 28hz room mode...that would be 4345 territory....a little bigger would be even better.

Your 13 foot room would be at about 43Hz. You'd only hear the bass outside the room. What fun is that? It's the same acoustic concept as a car with massive subwoofers inside that can't be heard in the car, but everyone else at the stoplight is ready to kill the SOB.

hello edgewound,

Ok, I will see if I have the space to 6m (20ft) may extend.

@readswift thanks for the link.

regards
juergen

[4313B]

Thanks for the link readswift.

http://www.gedlee.com/Summa.htm

Photo from http://www.bradjudy.com/audioblog/rmaf3/

[pos]

http://www.gedlee.com/downloads/Cum%20laude.pdf

Geddes on room modes. (Summa is 15" B&C LF and 15" waveguide - "optimised for small rooms" )

very interesting reading, thanks!
It looks like the 4430 fits most of the described requirements.
The "over-toed" idea is most appealing

[4313B]

It looks like the 4430 fits most of the described requirements.

Rumor has it that Earl Geddes bought his pair of 4430's from John Eargle. I think he ended up parting them out. I think he also wrote up what he thought was wrong with them from a performance perspective. I can't remember the details now.

[rs237]

Sorry, I am not so fast. I had to translate everything. Very, very interesting.

regards
juergen