3 way Pa Speaker Project - 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 25th February 2014, 10:13 PM   #1
diyAudio Member
 
Join Date: Apr 2005
Location: Salvador, BA, BRAZIL
Default 3 way Pa Speaker Project

Hello Guys,

Recently assembled a Small PA (small Parties, DJ) for Personal use, but not liked it.
It has a Selenium 15pw7 Woofer, Selenium St220i Driver and Passive 2 way Crossover.
I Amplify it with a QSC GX3 Power Amp.
I'm thinking about redoing the cabinet, making a 3-way design with the inclusion of a Selenium D405 Phenolic Driver for Midrange.
I Use this driver in the Cornscala (Bob Crites) Speaker for Domestic use and really like the result.
So I want to test it in this nex speaker Project for Pro Audio use.
In this case I will use a 3-way external crossover (Jriver+Focusrite Sound Card) for Bass / Mid / Treble.
Can anyone have a 3-way PA Project Papers??
Any help will be wellcome!
Thanks
Altsouza
  Reply With Quote
Old 25th February 2014, 10:33 PM   #2
diyAudio Member
 
Join Date: Mar 2013
The best sounding 3-way PA cabs I have heard use an 8" cone mid crossed at 500hz and 5khz, use a sealed back driver and you won't have to redesign the cabinet unless there is literally no room on the baffle to fit the driver.
  Reply With Quote
Old 25th February 2014, 10:41 PM   #3
diyAudio Member
 
Join Date: Apr 2005
Location: Salvador, BA, BRAZIL
Hi,
Thank you.
There is no space between the woofer and the small horn to install the 8" cone mids.
Do you really think the 8" cone woofer be better than the Huge D405 driver??
Thanks


Sent from my iPad using Tapatalk HD
  Reply With Quote
Old 25th February 2014, 11:41 PM   #4
RAW is offline RAW  Canada
diyAudio Member
 
Join Date: Jul 2002
Location: British Columbia ,Canada
Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.

I built these several years ago now with my brothers band.I had them in the shop for a day and they all worked on the speakers to build and finish them.The end result they dropped JBL horns and bins.These are the mains they have used in hundreds of jigs now.
Original was APT-50 then switched to the new D2500-Ti tweeter.Far better than the APT-50.
Beta 8
Kappa 15
I did not take a lot of pictures but here is a link to a few.

PRO monitors - a set on Flickr

For bass built a pair of them.

Click the image to open in full size.
Click the image to open in full size.
  Reply With Quote
Old 26th February 2014, 12:00 AM   #5
diyAudio Member
 
Join Date: Mar 2013
Quote:
Originally Posted by altsouza View Post
There is no space between the woofer and the small horn to install the 8" cone mids.
Well.. do you realize the D405 requires an equally massive horn to safely operate down to a 500-1khz crossover? You can't just bolt it to the little horn the 1" driver is currently attached to.

Last edited by conanski; 26th February 2014 at 12:02 AM.
  Reply With Quote
Old 26th February 2014, 10:27 AM   #6
diyAudio Member
 
Join Date: Apr 2005
Location: Salvador, BA, BRAZIL
Thank you Raw, good photos.

HI conanski,
I am going to build another Cabinet to acomodate de D405 driver.
I am looking for projects to build it.
The 8" Cone is also a option.
Thanks
Antonio

Last edited by altsouza; 26th February 2014 at 10:42 AM.
  Reply With Quote
Old 26th February 2014, 10:50 AM   #7
diyAudio Member
 
Join Date: Oct 2012
are you looking for plans to make a single box 3-way because separate boxes would be easier to handle as well as being lighter.
a folded or tapped horn for bass and a mid /high (containing your proposed 8 inch mid and horn)
something like a Cubo 15 for sub and an MT122 as a top
googling either of these should produce the results your looking for!(if not i should be able to forward you the right links)
  Reply With Quote
Old 26th February 2014, 11:02 AM   #8
diyAudio Member
 
Join Date: Apr 2005
Location: Salvador, BA, BRAZIL
Hi Turk,
I already have a separate 15" sub.
I would prefer to build a single 15" + 8" + Tweeter Cabinet.
Do you have any plans fot it?
Thanks
Antonio
  Reply With Quote
Old 26th February 2014, 11:34 AM   #9
diyAudio Member
 
Join Date: Oct 2012
not a specific plan but designing or adapting an existing plan to suit your purpose is possible.
are you looking for something horn loaded or simply direct radiator?
what type is your existing sub? making a suggestion for a mid high design without knowing what sub you have could lead to the wrong solution!
how are your carpentry/woodworking skills a horn loaded top would require advanced skills while a simple bass reflex can be cobbled together fairly easily with basic tools
  Reply With Quote
Old 26th February 2014, 12:08 PM   #10
diyAudio Member
 
Join Date: Apr 2005
Location: Salvador, BA, BRAZIL
Hi Turk,
The Sub is a regular Pro Audio 15" Sub - Band Pass Sixth Order.
For now I want to focus in the Main Cabinets. The Subs I can modifiy later next year.
For partical purposes I want a Single unit Cabinet. I already have a 15"+Titanium Driver Small Trapezoidal Cabinet, but I do not like it.
I want to build another 3 way one, and add a 8" Mid Cone or a large D405 Phenolic Driver for the mids. Maybe the 8" cone would be more eficient and economical.
I will active tri amp it using Jriver media center+Focusrite Sound card and QSC Power Amps.
I can build the Cabinets using 3/4 Naval laminate or MDF, and it can be Bass Reflex for easy built.
I need only the Plans.
Thanks
Antonio
  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
Sub project for PA - Help needed Lee in Montreal Subwoofers 54 28th February 2013 02:54 AM
PA Speaker Rebuild Project Mace_Hacker PA Systems 10 12th July 2012 07:16 PM
Portable PA Project Vivica PA Systems 12 25th June 2012 11:58 PM
PA Speaker Project [Newbie alert] RattusNorvegicus PA Systems 8 7th August 2010 05:31 PM
Hello from PA! (Project suggestions?) DIYStudent Introductions 3 29th August 2006 08:18 AM


New To Site? Need Help?

All times are GMT. The time now is 07:07 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