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

Instruments and Amps Everything that makes music, Especially including instrument amps.

Using a 15" Pro Studio speaker for bass
Using a 15" Pro Studio speaker for bass
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
Thread Tools Search this Thread
Old 28th March 2012, 06:44 PM   #1
Simon B is offline Simon B  United Kingdom
diyAudio Member
Join Date: Dec 2011
Location: North-East England
Default Using a 15" Pro Studio speaker for bass

I'm taking the liberty of starting this thread to help thunderpick see if he can use a speaker he got free for bass guitar.

He has been posting on an old thread originally about using sub-woofer speakers for this purpose, and I think this is causing confusion. The sub-woofer thread is http://www.diyaudio.com/forums/instr...ss-guitar.html

Briefly recapping thunderpick's first post about his speaker:

"I picked up a 15" Pro Studio speaker for free, it is a RM-065-241B 1999/12 SA 8 ohm Welton is the manufacturer, subsid of sony but Ill be darned if I can find didly.

I'm looking for schematics of the ecs 250 crossover on the peavey 118 sub hc cabinet. I love the thunder that cab gives with a peavey mark IV head. Building another cab with that 15 and 4 10's wanting full range. Haven't had any success finding the 1820 cab crossover, so please someone help!!"

I think I've found an identical unit on ebay that implies it's rated at 300W, but that's all. I've also posted these links for thunderpick to look at testing it, to determine its parameters, so he can nail up a right size box for it:

Measuring Loudspeaker Driver Parameters

One thing to watch is that Rod Elliott uses the word linear to mean two different things here... One is "the flat bit of the speaker impedance graph" the other is "speaker is being driven gently and distortion is low"

- soundcard scope with signal generator

NaTCH Engineering - SigJenny an Audio Signal Generator for Free
- just a signal generator

If this is a bit high-handed of me, then my apologies, it just seemed the best way to help thunderpick get his job done.

Last edited by Simon B; 28th March 2012 at 06:52 PM.
  Reply With Quote
Old 28th March 2012, 06:56 PM   #2
leadbelly is offline leadbelly  Canada
diyAudio Member
leadbelly's Avatar
Join Date: Dec 2002
Location: Calgary, Alberta
Personally, going through all that is a waste to just build 1 cab from a give away driver. Certianly not worth my time. Just buy or borrow a LC meter. If Le < 1 mH, the driver will probably have enough highs to make a decent sub cab. Getting a newbie to go to all the trouble of measuring driver parameters, which he'll likely not be able to finish because of the obstacles he comes across is a bad idea, IMHO.
Wise men speak because they have something to say; Fools because they have to say something. Plato
  Reply With Quote
Old 28th March 2012, 08:14 PM   #3
Simon B is offline Simon B  United Kingdom
diyAudio Member
Join Date: Dec 2011
Location: North-East England
Default Ok, well

Well, when I did this stuff previously, I actually found it quite interesting learning it.

I don't know how much thunderpick wants to get into it, but he self-evidently has the use of a computer, very probably a hifi amp. Apart from that the only other kit needed is some wire, a resistor, a multimeter and some simple free software.

Yes, maybe he'll find that the speaker he's got (anyone reading this got specs for it?) won't be much good for his purpose, then again, perhaps he just might. But he'll learn something, and know more about how this all works. Sounds ok to me, and I'm not twisting his arm or anything - if he thinks it looks like too much grief, then that's up to him.

Perhaps things have improved since I was doing this, some time ago now, but I found that speakers did vary somewhat from their spec sheets, to an extent that actually making the measurements was worth doing.
  Reply With Quote


Using a 15&quot; Pro Studio speaker for bassHide 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
Any 15" DVC pro speakers out there? mr. doom Subwoofers 12 1st February 2011 05:30 AM
Help Me Build My Speaker - (based off Pro Ac Studio 100) deckerluke Multi-Way 1 20th July 2009 03:16 PM
RARE Zingali 95-115-II OMNIRAY 15" studio monitors FOR SALE hy fy Swap Meet 4 19th February 2009 08:19 PM
4 Fane Studio 15B 15" cast-frame woofers... tweakk Swap Meet 1 5th February 2009 03:59 PM
15&quot; speaker for a bass cabinet Zaireeka Instruments and Amps 0 29th August 2004 03:11 PM

New To Site? Need Help?

All times are GMT. The time now is 05:18 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio