Jump to content

Driver testing GTG in Brisbane?


Recommended Posts

I (for one) have a number of pairs of vintage drivers for which I have no reliable T/S data, nor freq response data. I’m also curious to observe the process of measuring drivers to produce that data.

If it’s feasible to do so, I’d like to propose that we hold a speaker measurement GTG in Brisbane in the near future. (No preferred date in mind.) Participants would be invited to bring along drivers to be tested.

From what I’ve read I believe that - whilst access to an anechoic chamber is required for “gold standard†measurement – it is possible to get usable results without one.

I gather that what’s needed would include:

1. A tone generator or a PC/software/soundcard; and

2. A suitable microphone & stand; and

3. A speaker-mounting jig

4. Software or an Excel spreadsheet to crunch the data

So …

Is anybody interested in taking part?

Can anyone offer their expertise?

Does anyone have any suitable equipment?

Does the whole idea seem even feasible?

Doug

Link to comment
Share on other sites



Thanks Green wagon.

I think it may take a little while to gather enough interest, but I'm keen to proceed. I'd like to measure full range drivers, as well as bass, but I'm sure anything will be of general interest.

* I have a Yamaha M70 (class A) amp which should fit the bill nicely.

I also have recently purchased a DMM that does L & C and freq.

What's needed in terms of mounting the driver for test?

thanks & cheers

Doug

Link to comment
Share on other sites

The method i use needs no baffle.

I just hang the driver mid air, and so far the results are spot on..

Sposed to be for bass drivers, havent treid it on smaller ones.

It will only give you the T/S. but for a bass driver thats all you need for modeling.

I have, fluke 179, aem6000 (amp flat to ~5hz from memory), and digital generator that goes from 0.1hz to 200khz (?).

As we both live in the same suburb, we could do a mini meet maybe.

Link to comment
Share on other sites



doesnt matter at all, as there is no microphone used, its all done by voltages at different frequencies.

EDIT; this is what i use ----> http://sound.westhost.com/tsp.htm

Well I got busy the other night and I now have test boxes for 100mm (4") and 300mm (12") drivers.

I'll cut some packing pieces of MDF so I can utilise the 12" box for 8" as well.

Doug

Link to comment
Share on other sites

  • Recently Browsing   0 members

    • No registered users viewing this page.




×
×
  • Create New...
To Top