Looking for sub design ideas - Page 2 - diyAudio
Go Back   Home > Forums > Live Sound > PA Systems

PA Systems A forum for discussion of all parts of a sound reinforcement or DJ system: loudspeakers, mixers (desks) etc.

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 16th October 2012, 01:48 PM   #11
wg_ski is offline wg_ski  United States
diyAudio Member
 
Join Date: Oct 2007
Round ports = 6" PVC. Or a larger number of 4".

MDF, No. Use Araucoply or an equivalent. MDF cabs are too heavy and tear up. If by some miracle the birch ply you're getting at HD has got 13 plys, is void free and flat as a pancake, use it. It has happened, but usually you get garbage. Sticker shock on real Baltic Birch will send you back to Home Depot, unless you've got a friend with a wholesale license.

Back when I was a poor college student I used ordinary BC pine plywood. It does work for regular rectangular boxes, but you'll probabaly end up having to recut at least one panel. And if you get a hidden void you can end up with a buzz that you can't find and can't get rid of. Araucoply is easier to work with and the aggravation saved is worth the extra $15.

The XLS1000 is about as low as I'd go on the amplifier quality scale. I'd be looking al older, heavier, more reliable amps for now. Not necessarily new.
  Reply With Quote
Old 4th November 2012, 06:45 AM   #12
nuwan is offline nuwan  Sri Lanka
diyAudio Member
 
Join Date: Dec 2011
Location: galle
Quote:
Originally Posted by wakerider47 View Post
Hey all, newb here makin my first post. Im looking for some ideas on building a PA sub. I currently have a mackie swa1501 that is loudish but rolling off at 45 Hz just doesn't cut it for me. I use it mainly for house parties and small dj gigs, but it also serves as the sub in my ghetto HT (where 45 Hz is just pathetic).

My budget is pretty much whatever I can sell the Mackie for, so probably between $450 and $500. This has to be enough for the driver(s) and amp.

Ideally I would want super high quality sounding subwoofer with loads of sub 30 Hz bass and high SPL. Unfortunately I am a poor college student and am gonna have to go with loud over high quality lol.

Priorities:

1) flat to 30 Hz at LEAST (25 or even 20 would be oh so much more satisfying for the HT aspect)

2) enough volume to slay small house parties and give a solid 55 - 70 Hz thump

3) Not too obscenely difficult to build


Ive been thinking about a behringer EP2000 for a cheap ~1000w bridged to 4 ohms. I know behringer is questionable, but I've read some good things about the ep2000/4000 amps and they are oh so cheap.

That leaves $150-$200 for the driver(s). Im completely in the dark as far as driver selection so really any input is appreciated.

For the enclosure I'm also very up in the air. I know folded horns can get very loud, but I've read they have trouble below about 40 Hz. I've read good things about the extension of the house wrecker from decware, but also that it doesn't get that loud and isn't the best idea because its not driver specific. Idk, really I'm open to anything that will work.

Also, would I need to buy a x-over if running this from a full-range xlr input?

Lastly, do they even make PA sub drivers with 4 ohm impedance or am I stuck with 8 for a single driver build? Thanks again in advance and lemme know if I am grossly underestimating the cost of what I want.

sir
i think in live audio normally 40Hz -45Hz bass guitar 'E' string can produce & bass bin can reproduce this rang frequency in out door PA i think OK increasing number of bin for both side also cloud give good deep bass effect because non of the single bass bin can reproduce full length 40Hz of bass frequency it need minimum 4 bass bin to do the job. if you move for 18"PA woofer the same. folded horn good deep bass construction is pain and heavy

but still worth the 25-30Hz deep bass
tri this link P.Audio System Co., LTD
P.Audio System Co., LTD i can attach pdf file to this. is not much for you their are some calculation to make be for construction bass bin, bass driver 'Parameters'.

thanks
nuwan
Attached Files
File Type: pdf Designing_Bass_Reflex_Loudspeaker_Enclosures.pdf (87.4 KB, 38 views)
  Reply With Quote
Old 4th November 2012, 07:13 AM   #13
nuwan is offline nuwan  Sri Lanka
diyAudio Member
 
Join Date: Dec 2011
Location: galle
sir
if yo have time read this be for start. this is not muchP.Audio System Co., LTD

thanks
nuwan
Attached Files
File Type: pdf Designing_Bass_Reflex_Loudspeaker_Enclosures.pdf (87.4 KB, 11 views)
  Reply With Quote
Old 5th November 2012, 12:56 AM   #14
diyAudio Member
 
Join Date: Feb 2004
I may be late to the party, but check out the Dayton reference HO 15" ($150 @ PE right now). Roughly 5 ft3, two 6" ports tuned to around 30hz for PA use, then plug one port for HT. Power with a bridged behringer nu3000 ($255 @ amazon). Model it.

I like the 3/4" 5-ply birch from home depot ($45 per sheet), coat box internally with asphalt roofing mastic.

Last edited by turbodawg; 5th November 2012 at 01:08 AM.
  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
Sound Design, a new book on innovative and interesting ideas in speaker design. Studio Au Multi-Way 3 8th April 2012 08:46 PM
GlassFET Design Ideas Miles Prower Tubes / Valves 48 15th July 2005 07:32 PM
Design Ideas kwwitchg Multi-Way 0 8th February 2005 03:05 AM
Need Feedback on Design Ideas...Please Javaman Multi-Way 6 3rd March 2004 01:25 AM
Enclosure design ideas??? Milzie Multi-Way 9 27th November 2002 04:43 PM


New To Site? Need Help?

All times are GMT. The time now is 10:34 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