Re: back ported axiom speakers
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Joined: Jul 2006
Posts: 2,102
connoisseur
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connoisseur
Joined: Jul 2006
Posts: 2,102 |
I have my m80's about 8 inches from the wall. I guess 8" is enough room for some men...
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Re: back ported axiom speakers
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Joined: Jan 2004
Posts: 13,841 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,841 Likes: 13 |
8" here.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: back ported axiom speakers
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
hey, not all of us have 20" to play with like rbr
-David
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Re: back ported axiom speakers
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Joined: Jul 2006
Posts: 2,102
connoisseur
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connoisseur
Joined: Jul 2006
Posts: 2,102 |
hey, not all of us have 20" to play with like rbr 20" must be a PITA
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Re: back ported axiom speakers
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Joined: Dec 2007
Posts: 7,786
axiomite
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axiomite
Joined: Dec 2007
Posts: 7,786 |
4' here, but I have a mancave so...
Fred
------- Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!
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Re: back ported axiom speakers
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
RB, welcome. As far as the rear ports go, the only requirement is to give them some "breathing room", and about 3" would be enough for that. A more significant placement measurement would be to have the distances from the front wall, side wall and floor to the middle of the woofer cone unequal, if possible. The reason for this is so that the peaks and valleys caused by reflections from the room surfaces don't all pile up at the same frequencies.
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Enjoy the music, not the equipment.
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Re: back ported axiom speakers
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Joined: Aug 2006
Posts: 504
aficionado
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aficionado
Joined: Aug 2006
Posts: 504 |
What about the ceiling? The distance to the ceiling not equal to the floor, front and side walls is what you mean right? Also, I thought that you were supposed to make sure that those four distances aren't even divisible by one another. It seems like this would require a little bit of time since the m60's and m80's have 3 and 4 woofers respectively. My head hurts just thinking about it.
- Nick
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Re: back ported axiom speakers
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
Yeah, Nick; theoretically the ceiling should also be taken into account, but it usually isn't considered, since it would be very unusual to have a placement where the distance of the woofer cone to the ceiling was identical to the distance to the floor and both walls.
No, the evenly divisible lengths factor applies to the size of the room and the resulting modes. The reflections from the nearest room surfaces are a completely separate effect.
-----------------------------------
Enjoy the music, not the equipment.
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Re: back ported axiom speakers
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Joined: May 2004
Posts: 65
old hand
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old hand
Joined: May 2004
Posts: 65 |
Why does Axiom M60 and M80 have 3 ports (two rear and one front)compared to other speakers which only have one or two in the rear? And why doesn't the VP150 doesn't have a port? Just curious...
jj
Onkyo TX-SR805 M60T EP500 VP150 QS4 Outdoor Algonquins
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Re: back ported axiom speakers
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Joined: Apr 2008
Posts: 274
local
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local
Joined: Apr 2008
Posts: 274 |
The M60 are bigger with more drivers. IIRC the tweeters, midranges, and woofers are segregated by internal bracing, which would seem to come into play.
As for the VP150, many people will place it inside a cabinet or stand of some sort, so it's designed for different constraints, eg. not being able to assume that there's room for a rear port to breathe.
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