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Old 16th January 2005, 03:03 PM   #11
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Default rs meter

I baught the digital one a month ago and now i am bumed



Jeff
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Old 16th January 2005, 03:18 PM   #12
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Quote:
Originally posted by adason
to make things right, those are not mine modifications!
i just applied them

btw i use behringer ECM 8000 reference condenser with behringer ultra curve for extremely precise measurement

but at the end i do tailor the eq curve to my likeing anyway
yes, i remember seeing those posted on the lsdg or joelist a way back when. still good today.

the behringer setup is great, and under $500. also the ULTRADRIVE PRO DCX2496 for crossover purposes...does all ya need! then you're up around US$1000 total...

i would say the system i listed is the $100 version of the behringer. naturally less convenient, steeper learning curve, less flexible, "fudgier" and less accurate. but...

...in the end we tailor to preferences one way or the other.
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Old 16th January 2005, 03:20 PM   #13
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Default Re: rs meter

Quote:
Originally posted by tenderland
I baught the digital one a month ago and now i am bumed



Jeff
dude, return it! they take anything back...get the analog....
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Old 16th January 2005, 06:54 PM   #14
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Default speaker work shop

Could you use Speaker Workshop for RTA , with a lap top ,
and what sound card could you use ?


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Old 16th January 2005, 07:10 PM   #15
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Default Re: speaker work shop

Quote:
Originally posted by tenderland
Could you use Speaker Workshop for RTA , with a lap top ,
and what sound card could you use ?
Jeff
hey mateys

i'm just suggesting one very simple, adequate solution among many.

a $40 measuring device with a funky but reproducible and predictable curve, and a $21 CD that is designed to work with it, a piece of paper and a pencil.

plug'n'play.

honestly, i could buy any measuring system i want if i thought flat FR really mattered that much in the scheme of things...but i've tweaked too many gold-plated sales pitches with AWESOME SPECS that ate my eardrums out to fall for that 'ol line

any variations, you try 'em and tell ME.
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Old 16th January 2005, 09:01 PM   #16
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Default Radio Shack 33-2050 and 33-4050

Quote:
Originally posted by noisenyc


http://www.audioholics.com/techtips/...alibration.php

Quote:
Originally posted by adason
here is correction
http://www.users.bigpond.com/bcollis...orrections.htm
I compared the two Radio Shack manuals for the 33-2050 and 33-4050 and the curves are the same. So either SPL meter should be good.

However, the CD is pretty light on frequency tracks, especially ones over 2.5kHz.

I imagine there must be some sort of tone generation software that would let you do the same thing.

Gio.
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Old 17th January 2005, 01:11 AM   #17
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Default Re: Radio Shack 33-2050 and 33-4050

Quote:
Originally posted by gmilitano





I compared the two Radio Shack manuals for the 33-2050 and 33-4050 and the curves are the same. So either SPL meter should be good.

However, the CD is pretty light on frequency tracks, especially ones over 2.5kHz.

I imagine there must be some sort of tone generation software that would let you do the same thing.

Gio.
hehe

it's third octave across the audible bandwidth 20hz to 20khz...same centers as any RTA...note the rat shack compensation curves are the same centers...3rd octave

when you figure out the response of the radio shack meter at additional frequencies, please...share the info!
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Old 17th January 2005, 03:02 AM   #18
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Default Re: Radio Shack 33-2050 and 33-4050

Quote:
Originally posted by noisenyc

it's third octave across the audible bandwidth 20hz to 20khz...same centers as any RTA...note the rat shack compensation curves are the same centers...3rd octave

when you figure out the response of the radio shack meter at additional frequencies, please...share the info!
Well, that really was not the point I was trying to make. Given the limited number of frequencies, and since you already need paper and a pen, the same could be easily accomplished with free frequency generation software and the correction table.

With regards to additional frequencies, what do programs like speaker workshop do with the calibration file? Does it just interpolate between the calibration points?

Cheers,
Gio.
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Old 17th January 2005, 09:57 AM   #19
johnb is offline johnb  Sweden
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Just a question about the Rives Audio cd and the Radio Shack SPL meter, how long does it take to walk trough and measure 20-20kz? I hour, two?
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Old 17th January 2005, 10:21 AM   #20
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Default Re: Re: Radio Shack 33-2050 and 33-4050

Quote:
Originally posted by gmilitano


Well, that really was not the point I was trying to make. Given the limited number of frequencies, and since you already need paper and a pen, the same could be easily accomplished with free frequency generation software and the correction table.

With regards to additional frequencies, what do programs like speaker workshop do with the calibration file? Does it just interpolate between the calibration points?

Cheers,
Gio.
my point was this: the only thing you can accomplish with the correction table is third octave centers, which you already have on the cd,

the frequency centers are identical on the cd and correction table.

you would need to make a new correction table. which would require comparing the results at different frequency centers of the rat shack meter and a flatter system.

but then if you had a flatter system you could just measure...the speaker
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