Do I need a ECM8000 ? - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 26 Old 11-17-07, 12:52 AM Thread Starter
jwhite
 
Join Date: Feb 2007
Location: Houston,Texas
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Do I need a ECM8000 ?

I have a digital Radio Shack meter, and want to start doing measurments.
The meter has been droped a few times I guess its still acurate.
do I need the ECM for high frequency readings, or can the Galaxy do that too, or will my old Radio shack meter do everything ?
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post #2 of 26 Old 11-17-07, 07:52 AM
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Re: Do I need a ECM8000 ?

The Radio SHack meter is not suitable for full range measurements. I don't remember ever checking the accuracy of the Galaxy for high frequencies. Generally you should use a flat measurement microphone such as the ECM8000 for full range testing...

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post #3 of 26 Old 11-17-07, 01:14 PM
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Re: Do I need a ECM8000 ?

Note that the ECM8000 is not really a flat measurement microphone. Being picky, but you can see the radial differences in measurement accuracy printed on the box itself. And don't forget you need to get a calibration file as well.
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post #4 of 26 Old 11-21-07, 04:32 AM
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Re: Do I need a ECM8000 ?

Im going to replace my radioshack with this, but I was wondering, what connection type is the ECM 8000? minijack or rca?

It doesnt say so on the Behringer website actually.
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post #5 of 26 Old 11-21-07, 08:25 AM
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Re: Do I need a ECM8000 ?

Quote:
what connection type is the ECM 8000? minijack or rca?
XLR. It's a balanced output to feed a balanced input preamp like the XENYX802

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post #6 of 26 Old 11-21-07, 02:55 PM
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Re: Do I need a ECM8000 ?

Oh ok, so to connect this to my PC i need? XLR to minijack or that preamp as well?
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post #7 of 26 Old 11-21-07, 03:31 PM
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Re: Do I need a ECM8000 ?

Quote:
Oh ok, so to connect this to my PC i need? XLR to minijack or that preamp as well?
Yeah, this an electret condenser type balanced mic that outputs a very low level (not line level).

It needs a microphone preamp that supplies a phantom voltage to power it, and a gain stage to bring it up to a line level.

The output of the preamp I linked above is also balanced, but can be used single ended on the output by using 1/4" TS phono plugs.

The ECM mic can either plug directly into the preamps XLR input jacks or a full XLR cable can be used if you want to mount the mic on a tripod.

The output cable from the preamp (as shown below) would be a 1/4" TS phono to RCA. The RCA would be adapted at the soundcard to feed the left or right channel of the stereo line-input.

Do I need a ECM8000 ?-ub802mic.jpg

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post #8 of 26 Old 11-21-07, 04:17 PM
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Re: Do I need a ECM8000 ?

Ok I see, thanks.

The microphone and amp will cost me around 200$ in Denmark. Worth the upgrade over the normal Radioshack I use right now? I would only use this to EQ my sub.
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post #9 of 26 Old 11-21-07, 04:21 PM
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Re: Do I need a ECM8000 ?

Quote:
Worth the upgrade over the normal Radioshack
Have you considered the Galaxy CM-140 SPL meter. It's a fairly high quality SPL meter (like the Radio Shack, except it's not a toy). We have the cal file for the Galaxy on our downlload page..

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post #10 of 26 Old 11-22-07, 06:35 AM
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Re: Do I need a ECM8000 ?

Nope, but I would certainly do so! Can't find any seller in Denmark for one of these, but I see some debate on this site about it.
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