New Alpair 7, small OB project - diyAudio
Go Back   Home > Forums > Loudspeakers > Full Range

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 11th July 2010, 11:15 PM   #1
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
Default New Alpair 7, small OB project

Well, took the plunge and did a simple design of an L shaped OB panel to sit on my subwoofers made out of solid White Ash. Phil Townsend did all construction assisted by his shop slave . I did all the finish work using a black dye stain, Seal Coat then four passes of Behlen's String Instrument Lacquer. All work was done to optimize performance of the Alpair 7. They simply sound wonderful, in fact I would say they sound better in terms of height and width dispersion than the Maggie 1.6's that I once had not to mention they have beautiful tonality and that is only after 70 hours break in time. Here are a few photos.

Ramon
Attached Images
File Type: jpg L OB 001.jpg (803.3 KB, 1792 views)
File Type: jpg L OB 002.jpg (741.1 KB, 1597 views)
File Type: jpg L OB 012.jpg (807.6 KB, 1493 views)
File Type: jpg L OB 0017.jpg (757.3 KB, 1470 views)
File Type: jpg L OB 0020.jpg (790.2 KB, 1392 views)
  Reply With Quote
Old 11th July 2010, 11:20 PM   #2
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5


Is that you "holding up" the unfinished baffles?

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 11th July 2010, 11:22 PM   #3
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
No that is Phil.
  Reply With Quote
Old 11th July 2010, 11:26 PM   #4
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
Also, I should mention that Phil has built countless Full Range cabinets and is now focused on OB designs. No metal screws were used in this project just glue and wood dowels and rear speaker surround is tapered to allow more air on backwave.

Ramon
  Reply With Quote
Old 11th July 2010, 11:26 PM   #5
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Thanx... certainly the kind of grin i'd imagine Phil having

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 11th July 2010, 11:33 PM   #6
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
Yeah, he truly is a gem.

Ramon
  Reply With Quote
Old 11th July 2010, 11:42 PM   #7
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
Here are some more photos.

Ramon
Attached Images
File Type: jpg L OB 014.jpg (762.7 KB, 637 views)
File Type: jpg L OB 015.jpg (732.3 KB, 375 views)
File Type: jpg L OB 0022.jpg (750.4 KB, 596 views)
  Reply With Quote
Old 12th July 2010, 02:41 AM   #8
49 - for the 18th time
diyAudio Member
 
c2cthomas's Avatar
 
Join Date: Oct 2006
Location: Near "Music City" (Nashville Tennessee)
Hi Ramon - Very sweeeeeeeet! Did you build the subs yourself and if so how about some info on 'em? How are you doing your xover to the sub's and at what freq?

BTW - is that a HDD interface cable you are using to drive the 7's with????
__________________
DIY audio can be expensive but getting to see things go up in smoke - that's priceless!!!! ..... "whatever - call it brainfart of Mighty ZM"
  Reply With Quote
Old 12th July 2010, 07:50 AM   #9
lazyfly is offline lazyfly  Australia
diyAudio Member
 
Join Date: Jun 2004
Location: Melbourne
Nice work, great finish. I love white ash, we use that at work a lot (furniture). It's quite a pleasure to work with. I may have to try these puppies on OB myself
  Reply With Quote
Old 12th July 2010, 08:35 AM   #10
diyAudio Member
 
Monte Verdi's Avatar
 
Join Date: Oct 2008
Location: Santa Fe,NM
c2cthomas,

Subs are the NHT Sub Two system with two 10 inch drivers driven with ( Sunfire/Carver plate amps @ 250 wpc @ 8 Ohms. Crossover is reversed phase at 130-150 Hz I believe, been moving it around as amp is slightly dull and room is heavily damped. Alpair currently run off a mid - Fi Marantz integrated full range. I am working on my Blue Circle BC2's as I am confident these will take sound too a far more intoxicating level directly to Alpair 7 full range. Current preamp is custom Perreaux SM2. I also have a restored custom Scott 222C that is spectacular, unfortunately this is on the bench as well. I can never leave well enough alone) have to customize and that spells mistakes and learning curve without your favorite system at times, sucks. Cables are a DIY copper ribbon with long silver terminations, medical tape and cotton linen jackets.

lazyfly, yeah love the White Ash, real simple and beautiful stuff. Took dye, shellac and lacquer like a charm.

I will get more into sound disscussion as I swap in better gear soon and speakers break in more, but I must admit it sounds damn good even with this limited amp.

Ramon
  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
Small MLTL for Mark Audio Alpair 6 Drivers Jim Griffin Full Range 26 25th March 2013 07:07 PM
Alpair or CSS in OB? Monte Verdi Full Range 5 28th June 2010 09:02 PM
Alpair 12's in an OB? Anyone have pics? Urchinn Full Range 4 27th June 2010 02:24 AM
Alpair 5 project completed Chris74 Full Range 13 18th October 2008 10:30 AM


New To Site? Need Help?

All times are GMT. The time now is 08:04 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