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

combining two same full-range:does the low-range increase?
combining two same full-range:does the low-range increase?
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 18th February 2018, 06:52 PM   #1
Peters8 is offline Peters8  Italy
diyAudio Member
 
Join Date: Sep 2014
Default combining two same full-range:does the low-range increase?

Hi guys!
First of all, I apologize for my ignorance...but I'm a newbie.
Id like to combine two Monacor SP-205 fullrange for each cabinet (a sort of "array system").
This Monacor fullrange has a low frequency of just 100Hz, so my question is:
do you get a lower frequency response by using two Monacor SP-205 for each cabinet?...in other words, I mean: do the low frequencies range increase with two drivers in the same cabinet or they don't change at all?
Thank you for your kindness.
Best regards
  Reply With Quote
Old 18th February 2018, 07:03 PM   #2
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
combining two same full-range:does the low-range increase?
Using 2 FR drivers does not get you any lower, it only gets you more. You do have to worry about HF combing, the usual way to deal with that is to filter one driver so that it does not play at HF. This pdf covers off the 2 filter possibilities.

http://www.planet10-hifi.com/downloa...ver-Wiring.pdf

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 18th February 2018, 07:55 PM   #3
scottjoplin is offline scottjoplin  Wales
diyAudio Member
 
scottjoplin's Avatar
 
Join Date: Dec 2015
Location: Penrhyndeudraeth
Quote:
Originally Posted by Peters8 View Post
do the low frequencies range increase with two drivers in the same cabinet or they don't change at all?
It depends, if the cabinet is the same size then they are effectively each in a cabinet of half the size, so the system Q will have changed
__________________
Woofer Assisted Wideband is the New Testament renounce the anachronistic acronym FAST
  Reply With Quote
Old 18th February 2018, 08:07 PM   #4
norman bates is offline norman bates  United States
diyAudio Member
 
norman bates's Avatar
 
Join Date: Nov 2003
Location: iowa
Dual 8" ?

Dave is right.

I leveled my dual 4" (5" frames) with pennies at 10'.
Vertical sweet spot was so small, i couldn't hunch without losing past 5khz.
Smaller than 8" full range was the vert sweet spot.

I have a theory that you can array 12's, but i sold mine and can't tolerate a 55" tall box.

I'm a bass head and have been trying to increase bass to full ranges.
  Reply With Quote
Old 18th February 2018, 08:17 PM   #5
hm is offline hm  Europe
diyAudio Member
 
hm's Avatar
 
Join Date: Feb 2004
Location: near Hamburg Germany
Default double horns

Hello,
why do you chose that driver, no data, expensive for the quality,
easy make a coil ~8 mH at + of the seccond driver.
Look your country look SICA.

in my double horns you can increase the bass around one oktave deeper in Bass,
your driver is not useful in horns.
Attached Images
File Type: jpg RDH20 TB1772 monacorSPH-210 web.jpg (128.9 KB, 409 views)
__________________
http://www.hm-moreart.de
  Reply With Quote
Old 19th February 2018, 02:30 PM   #6
Squeak is offline Squeak  Denmark
diyAudio Member
 
Squeak's Avatar
 
Join Date: Jul 2007
Location: Frederiksberg
Using two drivers will allow you to EQ the low end more to your liking without running into trouble as soon as with one.
In other words you increase dynamic range.

Using two drivers, it's a terrible waste to low pass filter one of the drivers.
Instead you have a chance to improve directionality of the top end.

To combat attenuation due to interference in the highs do one of the following:
- Splay the drivers (angle them out from each other horizontally).
- Put the drivers one above the other as close as possible. That will limit the radiation pattern vertically which can be beneficial in certain settings and is was to accommodate in many cabinets.
- Finally, you could put one of the drivers on the back in bipole setup to have it reflect of a hard back wall.
  Reply With Quote
Old 19th February 2018, 08:11 PM   #7
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
combining two same full-range:does the low-range increase?
Quote:
Originally Posted by Squeak View Post
Splay the drivers (angle them out from each other horizontally).
This has been quite effective with the microTower Castle builds, one driver forward firing, the other facing up Ooptionally with the top panel canted slightly forward). Chris is just about to embark on another version of these for his living room (i think it will be iteration #3).

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 19th February 2018, 08:37 PM   #8
Squeak is offline Squeak  Denmark
diyAudio Member
 
Squeak's Avatar
 
Join Date: Jul 2007
Location: Frederiksberg
Quote:
Originally Posted by planet10 View Post
This has been quite effective with the microTower Castle builds, one driver forward firing, the other facing up Ooptionally with the top panel canted slightly forward). Chris is just about to embark on another version of these for his living room (i think it will be iteration #3).

dave
Wouldnt that be vertically then? I was thinking more along Time Window or Epicure MT1.
But still yeah, thats another approach.

Last edited by Squeak; 19th February 2018 at 08:40 PM.
  Reply With Quote
Old 19th February 2018, 08:55 PM   #9
planet10 is offline planet10  Canada
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
combining two same full-range:does the low-range increase?
The microTower is a tribute to the MT1, an ML-TL of exactly the same size. We built a number with bipole drivers, th ecastle arrangement has proven more useful with pretty much the same BSC fixes, less bipole dip, more spaciousness, and less placement issues.

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 19th February 2018, 09:02 PM   #10
ICG is offline ICG  Germany
diyAudio Member
 
ICG's Avatar
 
Join Date: Jul 2007
Location: I had a Dj Moo - I've seen that BS before!
Quote:
Originally Posted by planet10 View Post
Using 2 FR drivers does not get you any lower, it only gets you more.
2 FR drivers does get you lower, if you use a 1.5 configuration. That means, you take out one driver fairly low with a coil. Using 2 in parallel isn't advised because you'll get interferences and you'll lose the main reason to use a FR anyway because you don't have a point-sound-source anymore.
__________________
I had a Dj Moo - I've seen that BS before!
  Reply With Quote

Reply


combining two same full-range:does the low-range increase?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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Full Range Voice Range single speaker and enclosure loninappleton Full Range 23 9th May 2014 12:14 AM
Yamaha's JA-5004 non-circular/odd: Most ultimate Full Range / Mid range transducer ? tiefbassuebertr Full Range 2 3rd March 2012 07:59 AM
Korean Sonodyne S-654 Full-Range/Wide-Range Drivers thetubeguy1954 Full Range 6 18th January 2011 11:42 PM
Frequency range of the human voice & full range center channel speakers jwmbro Multi-Way 31 20th January 2008 04:07 PM


New To Site? Need Help?

All times are GMT. The time now is 08:20 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