4-5" driver 50-10,000hz - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

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 20th June 2006, 11:37 PM   #1
chuck55 is offline chuck55  United States
diyAudio Member
 
Join Date: Dec 2003
Location: New England
Default 4-5" driver 50-10,000hz

I have been unable to find a suitable full range driver so now considering a 2 way with the mid running full range.
Fostex F200 had to be played at minimum of 75 dB before it came to life. People here say FX120 bass does not keep up with rest of music plus its discontinued and no refoam kit is available. Other Fostex are bright with little bass. I'm afraid of brightness of Jordans. I don't want a 5dB boost to the bass and treble as the WR-125 does.

Can anyone suggest a 4-5" driver that will roll off at 10kHz without x-over? I would like to then add a tweeter with cap to high pass frequencies over 10kHz. Beaming is not an issue.
I have been unable to find a suitable full range driver so now considering a 2 way with the mid running full range. Considered the M130 except for the bad reviews of that driver here.

SPL is 75dB and I would use .25cu ft cabinet from Parts Express.
Thanks for any ideas.
  Reply With Quote
Old 21st June 2006, 12:04 AM   #2
diyAudio Member
 
RobWells's Avatar
 
Join Date: Aug 2002
Location: UK
I'm not really into full range drivers, but if I was to have a go at a '2 way full range' I'd be looking at a nice hi -eff 10 or 12" driver to do bass up to say, 200 - 300 hz. Then use the full ranger all the way up.

Reason being I'd reckon a 4" or 5" driver would be much better at doing the treble than the bass....

What do you mean by spl is 75dB btw ? background music ?


Rob.
  Reply With Quote
Old 21st June 2006, 12:21 AM   #3
ScottG is offline ScottG  United States
diyAudio Member
 
Join Date: Feb 2003
Location: US
Default Re: 4-5" driver 50-10,000hz

Quote:
Originally posted by chuck55
I'm afraid of brightness of Jordans.

Beaming is not an issue.
If you are afraid of "brightness" of the Jordans then beaming IS an issue.

The problem here is:

To have that small a driver, with that extended a freq. response, that also "came to life" - is virtually impossible.

The foremost problem here is that the "came to life" feeling is largely the domain of efficient drivers. ANY driver that small that is efficent enough to "come alive" will almost certainly have these qualities:
1. Low freq. extension to at most 70 Hz.
2. "tipped-up" higher freq. response.. i.e. "beaming".

The BEST driver I could think of that met your paramaters beyond "came to life" would be a driver that you'll have a hard time purchasing anymore (..Audax HM130C0).

If your willing to trade low freq. response (and get just about everything else you asked for) then there is the Veravox 5X at Solen.ca

A poorer "cousin" to the 5X would be the Fostex fe126e, but it has beaming as well unless modified (and a narrow band cavity resonance below 2 kHz).

If you give up the "came to life" parameter and the use of a Jordan then consider consider this thread by Thorsten:

An easy and fairly inexpensive DIY Mini Monitor with a Fullrange Driver
__________________
perspective is everything
  Reply With Quote
Old 21st June 2006, 05:44 AM   #4
chuck55 is offline chuck55  United States
diyAudio Member
 
Join Date: Dec 2003
Location: New England
Rob, I actually listen at 75 dB, not usually louder. So I think I can get into the 50's okay. I've given this some thought and decided it would be better to run a single driver for as much of the F-R as possible so that's why the x-over around 10kHz.

Thanks for the links Scott. They look like good drivers. FWIW my Tang-Band 871s plays down to 50dB okay, all things considered. OTOH the Fostex couldn't.
I don't see beaming as the same thing as a rising FR. A driver simply beams when the wavelength of the frequency approaches the diameter of the driver. Jordan makes a rising reponse curve to compensate for the beaming effect but to my ears, ANY rising FR is bright. I built the TB 1320 SA bamboo driver and had to get rid of it because it sounded bright.

My other thought is to go with the FR125 and eq it flat in the trebel and bass.
  Reply With Quote
Old 21st June 2006, 06:10 AM   #5
DoctorJ is offline DoctorJ  United States
diyAudio Member
 
Join Date: Mar 2006
Location: Georgia
DAYTON PA130-8 5" FULL RANGE P.A. DRIVER
Its response is 90-15k but your config will work
  Reply With Quote
Old 21st June 2006, 07:01 AM   #6
diyAudio Member
 
RobWells's Avatar
 
Join Date: Aug 2002
Location: UK
Maybe position the speakers so you're listening off axis ? Should lose some 'bite'

Rob.
  Reply With Quote
Old 22nd June 2006, 07:57 PM   #7
ScottG is offline ScottG  United States
diyAudio Member
 
Join Date: Feb 2003
Location: US
Quote:
Originally posted by chuck55

I don't see beaming as the same thing as a rising FR. A driver simply beams when the wavelength of the frequency approaches the diameter of the driver. Jordan makes a rising reponse curve to compensate for the beaming effect but to my ears, ANY rising FR is bright.
I can "see" that position. In the case of Ted's drivers though he doesn't do it so much to increase an averaged horizontal response - rather he does it to alter the driver's imaging properties (as opposed to a "flat"-on-axis vs. "flat"-off-axis response). As Rob has pointed out its a matter of loudspeaker positioning (i.e. "toe-in" or "toe-out").

Considering that you are going to use a tweeter - why not use a 1st order electrical crossover? I've personally never found a good air-core inductor to be detrimental to sound quality at reasnable power levels.
__________________
perspective is everything
  Reply With Quote
Old 23rd June 2006, 06:13 AM   #8
scudinc is offline scudinc  United States
diyAudio Member
 
Join Date: Nov 2005
Location: MD, USA
I don't think that such a driver exists. The closest thing I know of (at least for the high end requirement) is the Seas MCA15RCY, which is essentially flat to 10kHz. It's a midrange and not really designed for bass, but that may not matter much at the low levels at which you plan to listen.

I rewrote that last sentence four times and I'm still not happy with it; it stills sounds like a Wings lyric ("But in this ever-changing world in which we live inc"). I should sleep.
  Reply With Quote
Old 23rd June 2006, 05:44 PM   #9
diyAudio Member
 
Join Date: May 2006
Seas MCA15RCY is measured in IEC-baffle and that reason the low frequencies actually drops if put them in the box.
  Reply With Quote
Old 23rd June 2006, 06:13 PM   #10
navin is offline navin  India
diyAudio Member
 
navin's Avatar
 
Join Date: Jan 2002
Location: Mumbai (Bombay), India
Send a message via MSN to navin Send a message via Yahoo to navin
What about the Jordan JX6R. I think you might be better off getting a driver 100-20kHz like the Jordan above of 300-20khz like the Fostex FF85K. Mating either of these to a 5-8" woofer (depending on how big a speaker you desire) should work and integration at lower freq is easier as polar interference is not so much of an issue.

I am still waiting for some brave soul to use C37 on the dust cap of the JX92 (it is too expensive a driver for me to experiment with) and post results. I get the feeling that the rising response can be controlled by some such treatment.

Anyone brave enough or resourceful enough to ask Ted Jordan? :-)
__________________
...still looking for the holy grail.
  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
12" "guitar" driver in Audio Speakers jwhit67 Multi-Way 4 11th February 2008 03:47 PM
FS: Silver Iris Coaxial 15" driver pair (sans XO and compression driver) theAnonymous1 Swap Meet 0 24th April 2007 01:09 AM
Is it worth buying cheapy 15" driver or expensive 12"? VEC7OR Subwoofers 7 26th February 2005 11:09 PM
Limit power to 80watts RMS from 180-20,000Hz SkinnyBoy Solid State 6 18th July 2003 01:47 AM


New To Site? Need Help?

All times are GMT. The time now is 11:06 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