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

Multi-Way Conventional loudspeakers with crossovers

Small active 3-way floor stander with a punch
Small active 3-way floor stander with a punch
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 11th October 2018, 09:03 PM   #31
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
So I thought you should see the final design as-is before I start building. We will see if it will remain this way until the build is finished :P

The driver alignment pr. speaker will be:
Tweeter: 1 pcs. ScanSpeak Illuminator R3004/662000
Midwoofer: 1 pcs. SB-Acoustics MW19P-04
Subwoofers: 2 pcs SB-Acoustics SW26DBAC76-8 in Back to Back configuration as side firing woofers.

Crossovers will probably be:
Harsch XO at 1700 Hz
Harsch XO at 80-150 Hz
Linkwitz Transform to extend bassresponse as deep as makes sense – ideally 15-30Hz

The tweeter will have its own small chamber to avoid leakage from midwoofer.
The midwoofer will be in a aperiodic/ported (undecided) enclosure of 13,2L (with bracing subtracted).
The subwoofers will share a sealed cabinet of 19,3L (with bracings subtracted).

Each speaker will be driven by a FA253 plate amp.

This is what it all will (hopefully) look like in the end:

Click the image to open in full size.Click the image to open in full size.Click the image to open in full size.





And on the inside:
Click the image to open in full size.


Click the image to open in full size.

Last edited by DannerD3H; 11th October 2018 at 09:07 PM.
  Reply With Quote
Old 11th October 2018, 11:36 PM   #32
LineSource is offline LineSource  United States
diyAudio Member
 
LineSource's Avatar
 
Join Date: Sep 2003
Location: SiliconValley
Quote:
Originally Posted by DannerD3H View Post
I am definitely going to use DSP. My speakers will be 100% digital with the FA123. All crossovers will be DSP controlled, no analog crossovers.
Your latest cabinet CAD drawings still show a slanted baffle, which is not necessary with a DSP providing a driver-offset time delay capability. Is this for style? or a DSP without time delays?
  Reply With Quote
Old 12th October 2018, 12:04 AM   #33
LineSource is offline LineSource  United States
diyAudio Member
 
LineSource's Avatar
 
Join Date: Sep 2003
Location: SiliconValley
Quote:
Originally Posted by DannerD3H View Post
I am definitely going to use DSP. My speakers will be 100% digital with the FA123. All crossovers will be DSP controlled, no analog crossovers.
Your latest cabinet CAD drawings still show a slanted baffle, which is not necessary with a DSP providing a driver-offset time delay capability. Is this for style? or a DSP without time delays?
  Reply With Quote
Old 12th October 2018, 08:31 AM   #34
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
My DSP has up to 19Ms time delay (I think both + and minus).
The slanted baffle is mostly for style. I like the look and I think it feels less intrusive in the room. Furthermore, the speakers are only 80 cm tall so in order for the drivers to be pointed at ear height in listening position i need some tilt.
  Reply With Quote
Old 15th October 2018, 04:37 AM   #35
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
Default And the build has begun!

And the build has begun!

Click the image to open in full size.
  Reply With Quote
Old 15th October 2018, 04:47 AM   #36
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
Default Some construction images

I started out by cutting a template for the basic shape of the skeleton. Glued a 1:1 drawing on a precut piece of 21mm ply.
Click the image to open in full size.

Then from this template i routed all the pieces of this shape.
Click the image to open in full size.

Then i glued on new 1:1 drawings on the pieces and started drilling.
Click the image to open in full size.



And cutting.
Click the image to open in full size.

The fronts and back where cut on a table saw and then templates where glued on for routing alignment traces.
Click the image to open in full size.





Stay tuned!
  Reply With Quote
Old 16th October 2018, 04:37 AM   #37
Wright is offline Wright  United States
diyAudio Member
 
Join Date: Apr 2003
Location: Seattle, WA
Send a message via AIM to Wright Send a message via MSN to Wright
I have to say this is the first time I have seen the glued-on 1:1 drawing approach, but the detail-oriented side of me loves it. Great project and I will be very interested to hear your results, especially with two 10s in such a small cabinet. What are the approximate exterior dimensions you settled on?
  Reply With Quote
Old 16th October 2018, 05:25 AM   #38
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
Hello Wright#
If you are sure your printer prints 1:1 (at least very close - i think my drawings are in scale 1,005 which is way more accurate than my jigsaw skillz xD) then i really like this approach. I have all center points for drilling and lines for cutting. If you use the proper glue the paper can be pealed right off when done.
Allthough this approax has its limitations in aligning the paper properly of course..

I am also VERY excited to hear them!
These subs may not be the most musical subs in the world (i never heard them before, but my guess). But in this cabinet size they should have a Q of 0,702 without any fill. And i am sure they are really good for movies! And i am sure they are some of the very best flat subs

I have attached some pictures with outside dimensions. They are really small!
Attached Images
File Type: png Side meassurements.PNG (187.9 KB, 25 views)
File Type: png Top meassurments.PNG (213.7 KB, 23 views)
  Reply With Quote
Old 16th October 2018, 11:39 AM   #39
Baldin is offline Baldin  Denmark
diyAudio Member
 
Baldin's Avatar
 
Join Date: Jan 2005
Location: Copenhagen
Send a message via MSN to Baldin
An alternative to the 2 SB subs, could be 6 x Reckhorn D165 .... a bit cheaper, and could fit on front and back
__________________
Visit www.sensibleaudio.dk or read latest news on Baldin's Blog
  Reply With Quote
Old 16th October 2018, 01:10 PM   #40
DannerD3H is offline DannerD3H  Denmark
diyAudio Member
 
Join Date: Jun 2013
Location: Denmark
Hello baldin,
That would be roughly half the price!
They would require more volume and a taler speaker if i should fit them on front and back though. Also a bit late for such a design change :P

But thanks for the tip, will remember those for future projects!
  Reply With Quote

Reply


Small active 3-way floor stander with a punchHide 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
3 way floor stander speaker placement in small room ... help dannyjmf Multi-Way 9 10th September 2018 01:34 PM
Floor Stander MarKen for the A7P? mikejennens Full Range 10 26th February 2018 01:17 PM
Help with floor stander design under $1K hahbs Multi-Way 9 12th December 2016 11:39 AM
Initial thoughts - 3-Way active floor stander as first project... bushmeister Multi-Way 29 14th February 2013 01:41 AM
First DIY Build help. 3-way floor-stander. Elias318 Multi-Way 20 9th June 2012 12:18 AM


New To Site? Need Help?

All times are GMT. The time now is 02:36 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki