Get Free, Friendly, Expert Advice
Call 1-866-244-8796 or email

Designed and Manufactured in Canada Since 1980


AxiomAudio Blog

Blind Listening Tests

Sneak Peek into Axiom’s Current Research and Development

Axiom’s Newest Speaker: The In-Ceiling M3

Wall'O'Fame
Greg's pseudo-HT room
EP175v4 with M3v4
Who's Online
2 registered (Socketman, Ken.C), 42 Guests and 6 Spiders online.
Key: Admin, Global Mod, Mod
Financing
Forum Stats
13336 Members
11 Forums
22949 Topics
405873 Posts

Max Online: 378 @ 02/24/13 04:33 PM
Top Posters
Ken.C 17809
pmbuko 16298
SirQuack 13344
CV 11273
MarkSJohnson 10968
Meanwhile On Facebook

The end of a truly unique voice. RIP Joe Cocker - you were part of the soundtr...

Here's hoping you get what you really want this year! What could be better than...

Shopping made easy! Need it by the 24th? Upgrade to air shipping for just $20!...

Just two more days! Better tell your gift-givers! http://axiomaudio.com/holida...

Topic Options
Rate This Topic
#125810 - 01/27/06 10:39 PM Upside-down center channel height
BigScreenBill Offline
regular

Registered: 01/27/06
Posts: 7
Hi all,

I am in the market for new speakers and am very impressed by what I've read about Axioms and also by the helpfulness of the community here.

One of the primary reasons for getting new speakers is that I'd like to upgrade my center channel, the Energy E:XL-c; both my wife and I sometimes have trouble making out dialogue on it. I'd also like to upgrade my front speakers to towers. (Our tv room is about 16'(w)x20'(d)x(9'(h).)

Anyway, my question is this: what is the height of the VP-150 when upside down on the slanted end? (I know it's 7.5" right-side up.) For WAF purposes, it's important that the center channel fit inside my media cabinet, the BDI Avion 8529, whose drawer for the center channel is only 7 inches tall.

Thanks in advance!

Bill

Top
#125811 - 01/27/06 11:59 PM Re: Upside-down center channel height
pmbuko Offline
shareholder in the making

Registered: 04/02/03
Posts: 16298
Loc: Leesburg, Virginia
Unfortunately, you only lose about a quarter of an inch in height when you flip the VP150 upside down. So it will be about 7.25" in height.
_________________________
"I wish I had documented more…" said nobody on their death bed, ever.

Top
#125812 - 01/27/06 11:59 PM Re: Upside-down center channel height
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10412
Bill, welcome. Maybe someone with a VP150 can try it and measure, but I'd guess that it would simply be about 1/2" less when tilted back.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



Top
#125813 - 01/28/06 12:07 AM Re: Upside-down center channel height
pmbuko Offline
shareholder in the making

Registered: 04/02/03
Posts: 16298
Loc: Leesburg, Virginia
Instead of flipping my VP100 -- which has the exact same height and depth measurements as the VP100 -- and measuring the height, I calculated the .25" difference in height of the flipped VP150 based on the 75° slant.

Upon actual measurement, however, it appear the height is about 7 1/8". My calculation neglected didn't take the rounded edges into account, which cut the height the additional 1/8".
_________________________
"I wish I had documented more…" said nobody on their death bed, ever.

Top
#125814 - 01/28/06 09:01 AM Re: Upside-down center channel height
BigScreenBill Offline
regular

Registered: 01/27/06
Posts: 7
Thanks a lot for measuring! I measured the inside of the cabinet and it actually comes to about 7 1/16". It's too bad it seems to be off by such a small amount. I suppose that I could sand down either the cabinet or the speaker, but I think I'll spend at least a little more time exploring my options before doing something that's not reversable.

Thanks again for the prompt help!

Bill

Top
#125815 - 01/28/06 10:16 AM Re: Upside-down center channel height
Ajax Offline
axiomite

Registered: 12/30/03
Posts: 6255
Loc: Cleveland, Ohio
Not completely understanding you need or wants, I may be off base with this suggestion. If so, I ask forgiveness.

For good acoustics, it is not considered advisable to have any speaker all the way inside a cabinet. Even bookshelf speakers should be brought right to the edge of the shelf, and if possible extend an inch or so beyond. This is to minimize the influence of the shelf itself on the acoustic character of the speaker. It's called "boundry effect." You may have noticed that speaker stands all have a top plate that is actually smaller than the footprint of the speaker itself to eliminate boundry effect.

My current center channel extends, at it's bottom edge, a full 2 inches beyond the shelf on which it sits. And being tilted up, it extends a good half inch beyond the shelf above the speaker on which sits my HDTV.

Were you to have the VP150 on it's back, so that the drivers were angled up slightly, and inserted completely into the cabinet, there would definitely be a reflection off the shelf above the speaker to the detriment of the speaker's sound. With only an eighth of inch difference between your cabinet space and the height of the speaker, with the VP150 on it's back, you could fit the vast majority of the speaker into the cabinet, right up to the point where that eighth of an inch stops you, and have the remainder extend past the shelves above and below.

I know that if the cabinet has doors you wish to close, or if you, or your wife, would find that configuration offensive, this option would be unacceptable. But, I just wanted you to know that acoustically, it is actually preferable.

Here is #9 in The Ten Biggest Mistakes Of Home Theater Shopping.

"9. Don’t let your spouse or companion persuade you to hide your new speakers inside an antique armoire or entertainment unit. Why buy really good speakers if you're going to place them inside shelving units or armoires? It's the old law of boundary effects. The more surfaces near a speaker, the greater the likelihood of unpleasant sound colorations occurring. A speaker needs to operate more or less in free space. Smaller speakers sound their best on stands. Leave the armoire for electronics and storing CDs!

Regardless, I hope you get the problem solved to your satisfaction.
_________________________
Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton

Top
#125816 - 01/28/06 09:21 PM Re: Upside-down center channel height
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10412
Bill, the point that Jack makes about extending the center out slightly is well-taken for reasons both of sound and fit.
_________________________
-----------------------------------

Enjoy the music, not the equipment.



Top
#125817 - 01/30/06 08:52 PM Re: Upside-down center channel height
BigScreenBill Offline
regular

Registered: 01/27/06
Posts: 7
Thanks for the well thought out reply. My media cabinet center channel drawer actually has a built-in speaker grill, but I would hate not to close it. Unless, of course, I just removed it. I am going to see if I can do that, which would create a shelf over 8" tall. I think this may work the best.

Bill

Top



Moderator:  alan, Amie, Andrew, axiomadmin, Brent, Debbie, Ian, Jc 

Home  |  Corporate Info  |  Products  |  Message Board  |  FAQs  |  Warranty  |  Site Map  |  Privacy Statement   |  Contact Us

©2014 Colquhoun Audio Laboratories Limited
All Rights Reserved.