Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

12pw or similar sealed
12pw or similar sealed
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 8th October 2016, 04:14 AM   #1
astrojet is offline astrojet
diyAudio Member
 
Join Date: Apr 2013
Default 12pw or similar sealed

Has anybody thought about using a Mark Audio 12pw in a sealed box with a bit of EQ? It has a rather large Xmax at 8.5mm and Qts ~ 0.39. I'm thinking about one or a pair of these per side in either a FAST setup with a low x-over (some
where between ~150 and 400 Hz to a 4" fullrange or a FAWGCDT with the 12pw from low to ~5kHz crossing to a waveguided compression driver. Actually, the 12pw appeals to me because it seems to be possible to cross both low and high -- good for tinkering.

I'm not wed to the 12pw idea. If there are any other thoughts about other drivers, I'm all ears. I don't really want a huge floor footprint, maybe no more than 25cm X 25 cm max with max volume around 50 or 60 litres. This limits woofers to no larger than 8". Perhaps an AudioNirvana..?? Budget is flexible within reason. I'm interested in getting the most mid-bass punch I can from such small drivers. Ideally, in-room (medium sized) bass would get down in the low 40s or better.

All XO with miniDSP, biamped with tubes up to 40 WPC.

Any ideas would be greatly appreciated. Thanks!
  Reply With Quote
Old 8th October 2016, 05:25 AM   #2
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
12pw or similar sealed
Sealed sims:

12pw or similar sealed-a122pw-sealed-gif

We have used A12pw & in a Woden specified ML-TL where they are tremendous.

dave
Attached Images
File Type: gif A122pw-sealed.gif (20.5 KB, 447 views)
__________________
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 8th October 2016, 06:23 AM   #3
astrojet is offline astrojet
diyAudio Member
 
Join Date: Apr 2013
Thanks. To my novice eye, it looks like a 40l sealed box would have plenty of excursion left to EQ to mid-40s at my average pedestrian dB levels.

The Woden TL you are talking about... is that the wide mtm with the alpair 7.3 that you've posted elsewhere? If not, is it for 2 X 12pw or one? Can you tell me the lxwxh? I guess it comes with some of your paid plansets? Cheers.
  Reply With Quote
Old 8th October 2016, 06:32 AM   #4
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
12pw or similar sealed
Yes, that is the one. Scott designed it for one driver, we doubled it. This MTM is a follow on from the success we had with the EL166+FF85 MTM of similar design.

~40x121x29 cm (wxhxd)

Email me about the plans.

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 28th December 2016, 12:31 PM   #5
digiOS is offline digiOS  United States
diyAudio Member
 
Join Date: Jun 2016
I'm also interested in the single design for the 12PW can you email me or provide guidance, thanks.
  Reply With Quote
Old 28th December 2016, 03:18 PM   #6
Scottmoose is offline Scottmoose  United Kingdom
diyAudio Member
 
Scottmoose's Avatar
 
Join Date: Mar 2005
Location: UK
Unfortunately Dave has been in hospital since ~ early December and isn't likely to be on-line any time soon, although he is making progress thank goodness.
__________________
"'That'll do", comes the cry of the perfectionist down the ages.' James May -The Reassembler
www.wodendesign.com Community sites www.frugal-horn.com http://frugal-phile.com/
  Reply With Quote
Old 4th January 2017, 02:52 AM   #7
digiOS is offline digiOS  United States
diyAudio Member
 
Join Date: Jun 2016
Maybe someone can assist me I wanna try my first build it will be a tapered spiral enclosure. How do you calculate the size of chamber behind speaker and then the length of the tapering spiral after the chamber? Should the chamber and spiral equal VAS for optimal box?

example:
___________________
/ \________
| \
| \
| \
| \
\___________________/ \ |
| |
| |
| |
|
\/
spiral upward
coiled towards driver
  Reply With Quote
Old 21st April 2017, 11:45 PM   #8
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
12pw or similar sealed
Straight Woden ML-TL for A12pw: http://wodendesign.com/downloads/Wod...-MLTL-plan.pdf
Folded version: http://wodendesign.com/downloads/Wod...LTL-291015.pdf

The twin version we built does tremendous bass:
Click the image to open in full size.

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 April 2017, 01:35 AM   #9
chrisb is offline chrisb
diyAudio Member
 
Join Date: Aug 2002
Location: victoria BC
The MTM system shown now resides as front mains in my 7.1 system, with the recent substitution of stock MAOP7 for the EnABLed 7.3s, and a custom outboard passive XO designed by Aaron Drabitt. This configuration frees up a pair of channels on the Onkyo for front height surrounds - which makes far more of an improvement in envelopement on well encoded film soundtracks - and believe it or not, some broadcast commercials - than I expected. I think the only time they'll be leaving the room is to go back to the spray booth for a touch up on scratches on one if the front panels.
__________________
Retired from active DIY
  Reply With Quote
Old 22nd April 2017, 07:58 PM   #10
jimbro is offline jimbro  United States
diyAudio Member
 
Join Date: Nov 2010
Location: somewhere in Texas
12pw or similar sealed
Great for you to share those designs Dave and for you Scott for designing them. You guys continue to be most valued. So glad to have you back Dave.
  Reply With Quote

Reply


12pw or similar sealedHide 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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
MarkAudio 12P and 12PW question silverhairbp Planet 10 hifi 28 4th July 2016 11:13 PM
Alpair 12pw Fullrange? sk971 Full Range 13 5th February 2016 08:17 PM
Pensil for 12PW? silverhairbp Planet 10 hifi 3 8th November 2015 06:22 PM
4th order bandpass behaving very similar to a sealed sub? aarvin2 Subwoofers 14 21st September 2014 03:42 PM
MTMs or TMMs: using sealed upper and TL (or similar) lower drivers? Andy G Multi-Way 3 18th November 2002 04:46 AM


New To Site? Need Help?

All times are GMT. The time now is 10:26 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki