Audio Generator for Speaker Testing.............. - diyAudio
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Multi-Way Conventional loudspeakers with crossovers

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Old 24th May 2005, 11:11 PM   #1
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Join Date: Mar 2004
Location: Cleveland, OH
Default Audio Generator for Speaker Testing..............

Would the Heathkit Sine-Square Audio Generator Model IG-18 be good for testing TS Parameters for drivers? Or.............is there a better alternative?

David
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Old 25th May 2005, 01:50 AM   #2
ScottG is offline ScottG  United States
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Join Date: Feb 2003
Location: US
there are several loudspeaker measurement programs available and range in price from "free" to 2K+. Most of the less costly versions still require a "jig" for measurement.

this is the only DIY application specific device I know of:
http://www.partsexpress.com/pe/pshow...number=390-802
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Old 5th June 2005, 05:07 PM   #3
ed2005 is offline ed2005  Honduras
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Join Date: May 2005
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FREE software option.
http://www.nch.com.au/tonegen/

Above software along with the sound card of my laptop PC + a digital tester, allowed me to make several useful test in order to determine T-S parameters. The accuraccy of the signal will depend of course of the quality of the sound card used.
I think its worth a try.
Good luck!
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Old 5th June 2005, 07:42 PM   #4
rinox is offline rinox  Italy
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Join Date: Oct 2004
Try to search for max 038 schematic, it' s an ic from maxim thath have all the features you need: sq,tr,sin, form 0.1 Hz to 10 Mhz, pll out and some other features.
Also, you can order free samples http://www.maxim-ic.com/
You need only to add an output buffer, I don' t remember where the shematic is, buy I saw it, if I will found I' ll post the link.
OooooPS... just found http://www.web-ee.com/Schematics/Fun...0generator.htm
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Old 5th June 2005, 07:53 PM   #5
rinox is offline rinox  Italy
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Join Date: Oct 2004
Default A must trick

If you want to make a good measure, for first you need to "use" the loudspeaker, personally I use a small (6 V ac out) transformer connected to the speaker for 8/10 hours, you' ll have a better realistic measure.
I hope this will help.
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