C/E/X PA Flat to 30 (FT30) PA TH Awesomeness - Page 2 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

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 29th November 2010, 04:32 PM   #11
epa is offline epa  Netherlands
diyAudio Member
 
Join Date: Apr 2010
Location: amsterdam
does it need to go flat to 30 with 1 speaker ,2 or more per side?
this makes a big difference.
i woulden't be wise to give up spl for something you dont need.
i agree with 30 hz f3(i like the real lows 2) ,when you use 2 or more it wil be flat until 30 .

also would you post a bit of music (low notes).you want 2 reproduce.
i like 2 examen that.
in woody,s topic i posted a sample of a real low c synt. that was 32 hz centre freq.
  Reply With Quote
Old 29th November 2010, 05:08 PM   #12
epa is offline epa  Netherlands
diyAudio Member
 
Join Date: Apr 2010
Location: amsterdam
if you take Xoc1.m design 4 per side ,your goal is reeched
@900 watts x-max is 16mm 140 db @30 hz

Click the image to open in full size.
  Reply With Quote
Old 29th November 2010, 11:01 PM   #13
diyAudio Member
 
Join Date: Dec 2009
Location: California
Flat to 30 from 2 would be ideal, but realistic?

That looks beautiful but, is that 4 per side or 4 total???

Here's some material to scan: DeepDub.zip
Only 1 file is 192, the rest are 320. Wish I had .wav or flac to send you.


Justin
  Reply With Quote
Old 29th November 2010, 11:44 PM   #14
Xoc1 is offline Xoc1  United Kingdom
diyAudio Member
 
Xoc1's Avatar
 
Join Date: Nov 2008
Location: Devon UK
I suppose that the overall limitation would be what size events you are trying to cater for. Four of the large cabinets in a row would be impressive if your prepared to transport that volume of speakers. There might be a problem with bass steeriing if 4 cabs are lined up. J Bell has commented on using delays on the outer speakers with 4 of his big TH cabs to widen the soundfield.
Help needed choosing a design for live sound
Problems arise when the upper freqency wavelengths are smaller than the width of the cabinets. Without processing mid bass beaming is the result!
Are you planning on using a DSP such as a DCX2496 or a Driverack?
__________________
My daughters music
http://soundcloud.com/zoey-phillips
  Reply With Quote
Old 30th November 2010, 02:11 AM   #15
diyAudio Member
 
Join Date: Dec 2009
Location: California
Right now, I feel the only thing limiting me to do larger shows is lack of sound. I currently do shows for a few hundred people and they all want their clothing and nose hairs to vibrate.

SUVs and trucks I have used are typically ~48" wide and fit 2 Titan 48s side by side (24" wide/ea).

Yes, I currently use the DR260
  Reply With Quote
Old 30th November 2010, 03:11 AM   #16
diyAudio Member
 
Join Date: Aug 2010
I think you should seriously look into 40 to 120... you give up both SPL and space fast after that.
  Reply With Quote
Old 30th November 2010, 03:59 AM   #17
diyAudio Member
 
Join Date: Dec 2009
Location: California
I'll wait til epa scans the tracks I sent him before I change my entire plan of action
  Reply With Quote
Old 30th November 2010, 05:06 PM   #18
epa is offline epa  Netherlands
diyAudio Member
 
Join Date: Apr 2010
Location: amsterdam
Quote:
Originally Posted by CRESCENDO View Post
I'll wait til epa scans the tracks I sent him before I change my entire plan of action
here you go
couldnt scan one track,il try that later.
imo go with 30 hz since 32 hz is the lowest (repeaded) sound u want to reproduce.
you can get that with 2 per side at the cost of some spl
Click the image to open in full size.
  Reply With Quote
Old 30th November 2010, 05:16 PM   #19
epa is offline epa  Netherlands
diyAudio Member
 
Join Date: Apr 2010
Location: amsterdam
Quote:
Originally Posted by Xoc1 View Post
I suppose that the overall limitation would be what size events you are trying to cater for. Four of the large cabinets in a row would be impressive if your prepared to transport that volume of speakers. There might be a problem with bass steeriing if 4 cabs are lined up. J Bell has commented on using delays on the outer speakers with 4 of his big TH cabs to widen the soundfield.
Help needed choosing a design for live sound
Problems arise when the upper freqency wavelengths are smaller than the width of the cabinets. Without processing mid bass beaming is the result!
Are you planning on using a DSP such as a DCX2496 or a Driverack?
this can be dealth with by using an inverted arc.
justin is going to cross @ 100 hz max(3.4mtr wave length) therefore ,4 or less shouldn't be a problem imo.
  Reply With Quote
Old 30th November 2010, 08:06 PM   #20
diyAudio Member
 
Join Date: Dec 2009
Location: California
Thanks for running those scans. As we can see, 30Hz reproduction would be valuable in my case.

Also, I further see the value in high efficiency designs, even if a single cab doesn't grab the low end - your Xoc1.m sample above proves it's flat to 30Hz w/4 cabs

What program are you using to scan the files?

Last edited by CRESCENDO; 30th November 2010 at 08:07 PM. Reason: Question
  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
Nakamichi PA-5 and PA-7 Design Help Requested Apogee Pass Labs 20 30th May 2013 04:54 PM
Nakamichi PA-7 & PA-5 Bias Setting? sourceoneaudio Solid State 6 8th March 2012 01:37 PM
Vintage Peavey PA-120 Transistor PA amp ElectricMan Swap Meet 2 26th May 2010 06:22 PM
Nakamichi PA-7 and PA-5 amps Redwingnine Pass Labs 11 30th April 2010 10:27 PM
5.1 DIY kit with on PA speakers (or good & small DIY kit with PA speakers) ? jm_kzo Multi-Way 54 22nd April 2009 08:54 PM


New To Site? Need Help?

All times are GMT. The time now is 10:06 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