Pensil 7 (Alpair 7) - Page 17 - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > Markaudio

Markaudio Designers and builders of audiophile grade drivers

Reply
 
Thread Tools Search this Thread
Old 22nd October 2013, 10:47 AM   #161
zman01 is offline zman01  Bangladesh
diyAudio Member
 
Join Date: Feb 2011
Location: Dhaka
platplass,

Pensil's on walls might result in too much LF gain - just a guess.

You can take a look at the "Half Tower" designs on P10's community website -there are a couple of wall-mount options - they will be under the home theatre appendix IIRC.

Alp 7.3 should be usable with some minor port tuning changes - however late Scott and Dave comment on that.
  Reply With Quote
Old 22nd October 2013, 04:15 PM   #162
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Box alignment remains the same as long as you maintain internal height, cross-section, driver offset, vent area and placement.

As Zia says such placement will likely result in too much lift at the bottom. Some offset of this should be possible with increased damping.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 22nd October 2013, 06:42 PM   #163
chrisb is offline chrisb  Canada
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
I'd also advise against going too shallow to accommodate on-wall installation - every very shallow enclosure I've built suffered from a bit of "nasal congestion" most notable on vocals that stuffing didn't cure.

The very thin / light weight metal cones of the 7.3s would probably be even more sensitive to that than a paper cone of approx same size - such as the EL or CHP70s - but that's just conjecture on my part.

And of course, if wall mounted means significantly above floor level and not inverted to load to ceiling, then some loss of boundary loading would likely occur that would offset that from the wall? Again, conjecture - best pondered by the smart guys.
__________________
you don't really believe everything you think, do you?
community sites t-linespeakers.org, frugal-horn.com commercial site planet10-HiFi
  Reply With Quote
Old 22nd October 2013, 07:33 PM   #164
diyAudio Member
 
Join Date: Sep 2010
Location: Winnipeg
Thanks for all the responses.

Dave - by cross-section, does that mean as long as one keeps the same cross-sectional area?

Anyone venture to guess a good minimum depth?
  Reply With Quote
Old 22nd October 2013, 07:52 PM   #165
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally Posted by platplaas View Post
by cross-section, does that mean as long as one keeps the same cross-sectional area?
Anyone venture to guess a good minimum depth?
Yes.

140mm.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Steven's Alpair 10.2 Pensil Build Log StevenZ Markaudio 148 10th August 2013 02:43 AM
Alpair 7 - Pensil 70 vs Frugal Horn 3 Ultralight Markaudio 4 18th June 2011 05:24 PM
Illegitimate Son of Pensil - Alpair 10.2 buzzforb Full Range 135 25th April 2011 06:11 PM
Alpair 7eN Cabinet Selection (Pensil, BIB or Maeshowe) VFR800A Full Range 5 24th March 2011 01:54 AM
PVC Alpair 6 Pensil guglielmope Markaudio 18 27th June 2010 07:07 AM


New To Site? Need Help?

All times are GMT. The time now is 08:22 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2