[randytsuch]

None of us really now all that much, some of us are just better than others at hiding it.



Short answer: If you're only really going to use it for low-frequency measurements, the basic model will be fine.

Long answer: The reason I have different options is that omni-directional mics (which are supposed to have the same response to a given sound wave no matter what direction it comes from) don't actually act omni-directional at higher frequencies. High-frequency wavelengths are relatively small, so when they come into contact with the microphone, they reflect off the mic in different directions so the response of the mic to those high-frequencies is heavily dependent on the orientation of the microphone to the sound wave.

The more-expensive mics I sell basically contain information to let a user know and account for the directional effects at higher frequencies. For example, if someone is using to use the microphone for high-frequency room-calibration purposes, it's useful to know the directional characteristics of the microphone so they could adjust their measurement methodology accordingly.

Low-frequency wavelengths are so long (~10ft at 100 Hz, ~20ft at 50 Hz) compared with the microphone that almost all mics act omnidirectional at those frequencies. So if you're only going to measure low-frequency stuff, it doesn't matter what direction you hold the microphone in and therefore the basic model (which doesn't include any of the high-freq directional information) should suffice.

Does this help?

Thanks for the long explanation, that does clear things up for me, hopefully it helped others also.

Randy

 

[Anechoic]

Update:

As an FYI, I am getting absolutely inundated with orders. My Friday and early Sat orders (particularly he Basic and Basic+ orders) should ship by mid/end of this week. However the polar measurements take me a while to do so the Premium models might take longer to ship out. In any event, I have to ship everything out by Sep 30 since I'll be traveling in the Bay Area for a wedding on Oct 1-4 and don't want to get people too mad at me.

(to be honest I'm also getting afraid that PE might run out of mics - keep your fingers crossed!).

 

[Mauricio Cajueiro]

Hey Anechoic!
Nice you having this sale.
Can I get them here in Brazil?, I have a an international cc, paypal and a WAMU account.
I´ve been living in Brazil for about 2 years now, and I was wondering if you could ship it over here...
Thanks,
Mauricio Cajueiro.

 

[Euterpe]

I apologize if starting Yet Another Dayton EMM-6 thread seems excessive but since this is time sensitive, I wanted to make sure I got your attention.

Parts-Express is having a sale on EMM-6 microphones: $39 + shipping!

Being the magnanimous guy I am, I figured I'd calibrate a few EMM-6 mics and pass the savings on to you!

CSL-calibrated EMM-6 microphones, starting at $70 + shipping.

Of course that pricing is for the little people. Home Theater Shack members are special people (special in a good way of course ).

Any Home Theater Shack member who has an account as of September 17 gets $5 off. Just include your HTS username in the "additional information" section of the order form and I'll refund the $5.

The PE sale ends on Thursday, Sep 24. When it ends, so does my sale.

Ok, just to well understanding, your "deal" concern, microphone EMM-6 calibrated, right?

I have edit my request and I've seen the purchase link, sorry.

Thank you.

 

[Euterpe]

I've orderer this offer, wait and see.

I have missed to add my username :-( but only my member User: #41933, that's could be fine as well to the 5$ off?

Thank you.

 

[Jodez]

Newbie to sound calibration. I'd like to set my speakers/sub levels, would this mic be a better tool than a Radio Shack SPL meter for the job? What would I use with the EMM-6 for such calibration? Would "Basic" suffice or would "Basic+" be better?

 

[wado1942]

You still need an SPL meter to calibrate levels etc. Ideally, both a measurement mic & SPL meter should be used together.

 

[Jodez]

You still need an SPL meter to calibrate levels etc. Ideally, both a measurement mic & SPL meter should be used together.

So what the EMM-6 would only do is plot the full frequency response characteristics of my room? Not for setting levels?

 

[windowman99]

Well, not the reply I was hoping for, but at least it's honest. Looks like whatever I get will have to be bought as a matched pair from the start.

 

[Anechoic]

Hey Anechoic!
Nice you having this sale.
Can I get them here in Brazil?, I have a an international cc, paypal and a WAMU account.
I´ve been living in Brazil for about 2 years now, and I was wondering if you could ship it over here...
Thanks,
Mauricio Cajueiro.

Shipping to Brazil is $27USD. You can place an order at the site and select Brazil as the ship-to country.

 

[wado1942]

So what the EMM-6 would only do is plot the full frequency response characteristics of my room? Not for setting levels?

You are correct. The frequency response of the Rat Shack SPL meter isn't nearly accurate enough for frequency response but it IS accurate for determining average level using pink noise. With a measurement mic, there's no way of determining absolute SPL but it WILL give you a good plot of the sound of your room & an approximation of the response of your speaker system.

 

[yobbo]

Just ordered mine, thanks for the work. Now I will be able to improve a few of my projects, and help a couple of friends with theirs.

 

[nwboater]

If loudspeaker measurements are your primary use (as opposed to room acoustics), you should be okay with the basic model.

Guess I didn't ask the ? properly. I'm not really interested in measuring just the speakers. My goal is to work on room acoustics, but full range, not just for the future subwoofer. Only mentioned the Khorns because I believe their dispersion (being corner horns) may be different than the typical direct radiator speakers.

Thanks for your good support with this.

Rod

 

[ndurantz]

You still need an SPL meter to calibrate levels etc. Ideally, both a measurement mic & SPL meter should be used together.

So I am admittedly ignorant here. :scratchhead: I have a nominal set-up in my living room (Orb Mod 1's 5.1 with Super 8 sub). I have wanted to calibrate my room for awhile, but not even sure as to the steps to go about that. Maybe someone can point me to a thread that describes how to do this? I need to know what I am into prior to purchasing the equipment.:spend: Nonetheless, this does seem like a great deal!

 

[hans14914]

I have been meaning to buy a calibrated mic from you for some time for use with a room analyzer, like REW. With a more "simple" program like REW, does the polar respsonse and noisefloor actually make a difference? For use novices out here, could you please provide some software pairings for the various level of mics your are offering? I think that would help alot of us. If REW can only take advantage of the basic mic, and that is the only package you plan on running, then the Plus options make no difference. However, if a more advanced program, say Accourate or Audiolense could use them, and you plan on purchasing that down the road, it seems to make sense to buy the more expensive mic now.

Any info you could supply regarding usability of the calibration levels would be greatly appreciated.

Thanks
Hans

 

[varocketry]

Thanks for the email

Shackmaster:

I've spent the weekend reading the FORUMS on the microphone offering and upstream to understand. I am interested in the topic as I have a Kenwood THX sound system that I purchased several years ago that I probably never have set up properly.

I need help with Home Theatre Sound System Setup 101 -- it appears most of the forum discussions are graduate level (404) discussions far more advanced than my current understanding.

I'd love to get advice and guidance in setting this current system up properly to enjoy better surround and theatrical sound.

Jim

 

[wado1942]

So I am admittedly ignorant here. :scratchhead: I have a nominal set-up in my living room (Orb Mod 1's 5.1 with Super 8 sub). I have wanted to calibrate my room for awhile, but not even sure as to the steps to go about that. Maybe someone can point me to a thread that describes how to do this? I need to know what I am into prior to purchasing the equipment.:spend: Nonetheless, this does seem like a great deal!

I've written a rudimentary article on acoustics. This is more about arranging your speakers/room for best sound but that's where it starts.
http://www.gcmstudio.com/acoustics/acoustics.html

You may also look into reading some of Bob Katz's articles at www.digido.com
His site is geared more toward pro-audio but the same principles apply to home theater.

 

[Euterpe]

I've written a rudimentary article on acoustics. This is more about arranging your speakers/room for best sound but that's where it starts.
http://www.gcmstudio.com/acoustics/acoustics.html

Hum, very interesting article, thank you to share with us your knowledge.

Do you have a translation in french to this article?

Regards

 

[AudioIronHorse]

I ordered a calibrated mic. Do I need a microphone preamp to power it in order to use REW? Any suggestions to which one if it is needed?
Thanks!
D

 

[ndurantz]

I've written a rudimentary article on acoustics. This is more about arranging your speakers/room for best sound but that's where it starts.
http://www.gcmstudio.com/acoustics/acoustics.html

You may also look into reading some of Bob Katz's articles at www.digido.com
His site is geared more toward pro-audio but the same principles apply to home theater.

Whew! Ok. I will have to pour over this later, but I am looking foward to it. Thanks! :T