About speaker location

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alberan
Posts: 3
Joined: Tue Oct 26, 2004 9:16 pm
Location: Bilbao

About speaker location

Post by alberan »

Hi, i´m new member from Spain and my english is terrible, so sorry :oops: .

Actually i have a pair of Soundcraft Spirit Absolute 2, the manual tell that it sound better with the cabinet locate against a wall. It is possible?

In

http://www.mhsoft.nl/SpeakerPlacing.asp

the speakers are not against any wall.

Thanks
knightfly
Senior Member
Posts: 6976
Joined: Sun Mar 16, 2003 11:11 am
Location: West Coast, USA

Post by knightfly »

Both answers are correct, but for different reasons - the link you gave assumes that your speakers have a flat frequency response, and is designed to let you hear the speakers AS THEY ARE, as accurately as possible -

The comment in your manual is probably an attempt by Soundcraft to make your speakers sound BIGGER than they are; this placement would give you more apparent bass from a small set of speakers - by having the speakers really close to a wall, the speakers can drive the room modes easier, resulting in a stronger bass response.

This is not an accurate sound though; placing speakers closer to a wall will raise the frequencies where you get interference and phase cancellations... Steve
alberan
Posts: 3
Joined: Tue Oct 26, 2004 9:16 pm
Location: Bilbao

Post by alberan »

Thanks knightfly, so what is your recomendation in this case, softit - againts the wall - far away the wall ...

Cheers
knightfly
Senior Member
Posts: 6976
Joined: Sun Mar 16, 2003 11:11 am
Location: West Coast, USA

Post by knightfly »

That would depend on whether you're willing and able to build soffits for your room, and the size of the room - if the room is tiny, then having enough space to move around and use your gear might be more important.

If your room has enough space so it's not a problem, almost any speakers will sound better in soffits and will need less acoustic treatment overall.

Placed up against a wall or mounted in soffits, any speaker will have more apparent bass output - since yours are passive, you may need to turn the bass down a bit to get the speakers to sound balanced - this is because when you mount speakers so they can only radiate sound in the forward direction, they are forced to put twice as much bass in that direction (called the half space mode) - so some sort of "roll-off" is needed at the amplifier to correct for this.

If you can, I would soffit mount - there is quite a bit of info on soffits both here and (I believe) in the Acoustics forum; there's more pix in the Studios Under Construction area, here -

http://www.johnlsayers.com/Studio/index.htm

I hope that helps... Steve
alberan
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Joined: Tue Oct 26, 2004 9:16 pm
Location: Bilbao

Post by alberan »

Thank you.

Alberto
andrebrito
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Joined: Fri Oct 29, 2004 10:30 pm
Location: Uk and Portugal
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Post by andrebrito »

Hello !

I'm also new to this forum....

I remember a friend of mine has a pair of monitors just like those. These have large cabinets and also a bass reflex port meaning they have an higher output at lower freqs.

In my opinion, you should not place them near a wall, I remember my friend was always saying his mixes always had lots of bass frequencies when he played them on his regular stereo HI FI.

Just MHO
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