back to the question at hand... the UM18-22 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 24th September 2015, 12:46 AM   #1
diyAudio Member
Join Date: Sep 2015
Default UM18-22

Does anyone have experience with this sub? I'm going to be using it in the ~4.0 ft3 box sold by parts express. Is it acceptable for an upfiring configuration?

I've seen lots of numbers about box volume for a Q .707 and many of them are very different. It would be awesome to hear from someone on these forums. Given that the box volume is 4 ft3 minus the internal bracing and driver I was thinking a little over the most commonly recommended 2 pounds of poly fill was in order. It would be awesome if someone could run it through a good sim or formula that they know is reliable.

The more information i have the better.

Last edited by OpenglCG; 24th September 2015 at 05:28 AM.
  Reply With Quote
Old 24th September 2015, 11:39 PM   #2
diyAudio Member
Inductor's Avatar
Join Date: Feb 2006
Location: Cascais
Hi OpenglCG,
Qtc = 0.93 is very fine.
Another example in a 4ft2 cubic, Qtc = 0.91.
Dayton Audio UM18-22 v2015 pdf @PE Kit
Have fun.
temperature 20 C
altitude 50m
humidity 40%
Attached Images
File Type: gif DAYTON UM18-22 v2015, VB = 113.0 L sealed.gif (100.4 KB, 37 views)

Last edited by Inductor; 24th September 2015 at 11:59 PM.
  Reply With Quote


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
UM18-22 with knock-down 4.0 ft3 from PE OpenglCG Subwoofers 13 26th September 2015 01:41 PM
ADCOM 22,000Uf 100V Back in Stock Apex Jr Apex Jr 3 9th June 2015 07:53 PM
quads11&22 back into service solderon Tubes / Valves 3 29th September 2011 10:32 PM
Second-hand Kenwood speakers question... Lisandro_P Multi-Way 2 9th November 2000 03:38 AM

New To Site? Need Help?

All times are GMT. The time now is 12:49 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2