Hey guy's, I'm thinking of purchasing a dedicated function generator and frequency counter instead of using the laptop setup and sound card that I am currently using. The frequency gen. that is pc based seems to be spot on, when I compare its output freq. to my Fluke meter. What I don't like is the small fluctuations in voltage through the freq. range. I was told here in the forum that this is the sound card inaccuracies I am seeing. I want to be able to measure the TS parameters accurately, is this outboard/non pc based equipment a better way to go? I have the fluke meter and was thinking of buying one of the B&K Precision units (function gen/freq counter) I just started reading Joe D'Appollito's book Loudspeaker testing and think I will have to read it about 20 times till all sinks in.
Anyway, any thoughts on the hardware question?
dallaire
PS - I am using so far the constant voltage tech. using an old Onkyo reciever for amp for test purposes, fed by USB soundcard hooked to laptop.
Anyway, any thoughts on the hardware question?
dallaire
PS - I am using so far the constant voltage tech. using an old Onkyo reciever for amp for test purposes, fed by USB soundcard hooked to laptop.
Yea, thats not a bad idea at all! I used speaker workshop for a while but it is to much of a pain to get all the settings setup correct even with the "jig" I have built. I will check these program/soundcard setups. Thanks
dallaire
PS. The one reason I was going the large hardware route was I'm getting a gift cert. from a large electronics store locally that sells B&k gear, they unfortunatly don't sell software of any kind
dallaire
PS. The one reason I was going the large hardware route was I'm getting a gift cert. from a large electronics store locally that sells B&k gear, they unfortunatly don't sell software of any kind
not sure if you feel like building something, but I'm going to do this before too long:
http://sound.westhost.com/project86.htm
http://sound.westhost.com/project86.htm
Yea, I have read alot on Rod's site, some very interesting stuff! I did just purchase the "Smith and Larson Audio" Woofertester 2,software and hardware package, seems to be a nice package, hope its all of what it seems to be
It seems to do a bit more than some of the ones out there. I checked with Parts Express, there's seems to be a little basic but not as expensive.
I ordered a amp board once from ESP audio and was not at all imprresed with the lack of quality!, never even finished the amp project, I was so discouraged with the board. Marchand stuff is awesome in comparison, sorry thats my two cents. Rods articles though I do find very interesting!
dallaire
PS- thanks Panomaniac for the suggestion, Maui, boy lifes tough huh?
It seems to do a bit more than some of the ones out there. I checked with Parts Express, there's seems to be a little basic but not as expensive.I ordered a amp board once from ESP audio and was not at all imprresed with the lack of quality!, never even finished the amp project, I was so discouraged with the board. Marchand stuff is awesome in comparison, sorry thats my two cents. Rods articles though I do find very interesting!
dallaire
PS- thanks Panomaniac for the suggestion, Maui, boy lifes tough huh?
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