measuring frequency response

bonsai171 · 17th February 2004, 03:23 PM

What would it take to start measuring the frequency response of speaker drivers? I would like to learn how to do this, and start building speakers.. What's involved? Tia

Timn8ter · 17th February 2004, 04:27 PM

Google is your friend.

http://yu-ra.tripod.com/ts_parameter.htm

http://sound.westhost.com/tsp.htm

Also, pick up a copy of The Great Sound Loudspeaker Manual. It has an easy to understand explanation and pictures on how to measure drivers along with some projects.

claudio · 17th February 2004, 04:35 PM

Hello,
you will need the hardware and the software to do it, and it will cost you from few euros (depending on what do you already have) to hundreds of €. A cheap way is using Speaker Workshop as software and your computer sound card as hardware: check my site to have a better idea; be aware that it isn't a P'n'P solution, you need to spend time to achieve a sufficient knowledge. Expensive (but ready to go) solutions are Clio and MLLSA; with an oscilloscope you can get some measurements too.

Regards

Claudio

kan3 · 17th February 2004, 05:06 PM

if you have a computer:

behringer ecm8000 mic + preamp with phanton power = $95 US

RTA software - Free for the basic options on some good programs...better options would be the level 3 TrueRTA for $70 US

http://www.trueaudio.com/rta_abt1.htm

Centauri · 18th February 2004, 01:59 AM

Check out Eric Wallin's audio page at http://www.gti.net/wallin/audio/audio.html for Speaker workshop tutorials and DIY hardware to make it all work.

Cheers

Timn8ter · 18th February 2004, 02:03 AM

Quote:

pick up a copy of The Great Sound Loudspeaker Manual.

It might help if I get the dang title right. It's the Great Sound Stereo Speaker Manual by David Weems.

bonsai171 · 18th February 2004, 02:41 AM

Timn8ter, thanks for the book title. That looks like it would be something manageable.. Also, (to everyone) is it necessary to measure the frequency response and parameters of a speaker? Many companies seem to supply it, so what exactly is it used for? Does it have to do with building the crossover? Maybe after you design a crossover you do a frequency response test to see how flat the system came out or something?? tia

Dave

Timn8ter · 18th February 2004, 06:26 PM

Quote:

Originally posted by bonsai171
Timn8ter, thanks for the book title. That looks like it would be something manageable.. Also, (to everyone) is it necessary to measure the frequency response and parameters of a speaker? Many companies seem to supply it, so what exactly is it used for? Does it have to do with building the crossover? Maybe after you design a crossover you do a frequency response test to see how flat the system came out or something?? tia

Dave

More reading.
http://www.decware.com/new%20site/mainmenu.htm

Read Steve's article titled "How to Design a Speaker".

Quote:

Once you have the drivers in your hands, and after you've measured the Thiel&Small parameters of at least the woofers, you are ready to start designing a crossover. Now that you can plainly see the discrepancies between the published specs and actual measured specs, you can be glad you haven't built the crossovers yet.

Pjotr · 18th February 2004, 07:29 PM

Hi,

Would say pick up a copy of Great Sound Stereo Speaker Manual by David Weems first and read it thoroughly. It is really a good book to start with (one of the best IMHO) and also fun to read. It will make a lot of things clear. After then you can decide if you really need to invest in measurement stuff. IMHO measurement is not the first thing you need when you want to DIY loudspeakers.

Cheers

BTW. Weems book comes with CD loaded with free (DOS) design software. However no measurement software.

17th February 2004, 03:23 PM	#1
bonsai171 diyAudio Member Join Date: Dec 2002 Location: PA	measuring frequency response What would it take to start measuring the frequency response of speaker drivers? I would like to learn how to do this, and start building speakers.. What's involved? Tia

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Measuring Frequency Response	MCPete	Multi-Way	10	10th February 2009 12:36 AM
Measuring Frequency Response	furly	Planars & Exotics	1	17th March 2006 06:59 AM
Measuring the frequency response of a mic?	mr_push_pull	Multi-Way	5	30th August 2004 12:26 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	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

17th February 2004, 04:27 PM	#2
Timn8ter diyAudio Member Join Date: Jul 2003 Location: Seattle, WA	Google is your friend. http://yu-ra.tripod.com/ts_parameter.htm http://sound.westhost.com/tsp.htm Also, pick up a copy of The Great Sound Loudspeaker Manual. It has an easy to understand explanation and pictures on how to measure drivers along with some projects.

17th February 2004, 04:35 PM	#3
claudio diyAudio Member Join Date: Feb 2002 Location: Italy	Hello, you will need the hardware and the software to do it, and it will cost you from few euros (depending on what do you already have) to hundreds of €. A cheap way is using Speaker Workshop as software and your computer sound card as hardware: check my site to have a better idea; be aware that it isn't a P'n'P solution, you need to spend time to achieve a sufficient knowledge. Expensive (but ready to go) solutions are Clio and MLLSA; with an oscilloscope you can get some measurements too. Regards Claudio

17th February 2004, 05:06 PM	#4
kan3 diyAudio Member Join Date: Nov 2003 Location: MI	if you have a computer: behringer ecm8000 mic + preamp with phanton power = $95 US RTA software - Free for the basic options on some good programs...better options would be the level 3 TrueRTA for $70 US http://www.trueaudio.com/rta_abt1.htm

18th February 2004, 01:59 AM	#5
Centauri diyAudio Member Join Date: Jul 2003 Location: Newcastle, Australia	Check out Eric Wallin's audio page at http://www.gti.net/wallin/audio/audio.html for Speaker workshop tutorials and DIY hardware to make it all work. Cheers

18th February 2004, 02:41 AM	#7
bonsai171 diyAudio Member Join Date: Dec 2002 Location: PA	Timn8ter, thanks for the book title. That looks like it would be something manageable.. Also, (to everyone) is it necessary to measure the frequency response and parameters of a speaker? Many companies seem to supply it, so what exactly is it used for? Does it have to do with building the crossover? Maybe after you design a crossover you do a frequency response test to see how flat the system came out or something?? tia Dave

18th February 2004, 07:29 PM	#9
Pjotr diyAudio Member Join Date: Nov 2002 Location: Netherlands	Hi, Would say pick up a copy of Great Sound Stereo Speaker Manual by David Weems first and read it thoroughly. It is really a good book to start with (one of the best IMHO) and also fun to read. It will make a lot of things clear. After then you can decide if you really need to invest in measurement stuff. IMHO measurement is not the first thing you need when you want to DIY loudspeakers. Cheers BTW. Weems book comes with CD loaded with free (DOS) design software. However no measurement software.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)