Dayton OmniMic Precision Measurement System - Page 52

Originally Posted by goneten

Interested to know what the solution is to this problem.

Originally Posted by exojam

Bob,

Just out of curiosity did you apply the cal file once you downloaded it?

I apologize up front for the question but just checking to see, thanks.

James

Originally Posted by bob_m10

Yes I did on both machines. Thanks Bob

Originally Posted by exojam

Bob,

Thanks for the reply.

Does that file you downloaded show your mic’s serial number in the name? Can you make a copy of that cal file and then go into the copy and see your mic’s serial number anywhere? Thanks.

James

Originally Posted by exojam

Bob,

Just a few more questions for you.

1) Is this a V2 mic or a recalibrated V1? I am thinking the V2 based off of this statement “I just set up my new Omnimic” but just want to make sure.
2) What OS are you running?
3) What does the Omni show as in the Control Panel (under the Sound)?

James

Originally Posted by exojam

Bob,

Unfortunately I am out of ideas as of this point as it appears you have everything setup correctly. Hopefully Bill will see this and have some ideas.

James

Originally Posted by bob_m10

Thanks for the help on this. Here are the first few lines of the text file. My serial number is listed on the first line. Bob

"Sens Factor =-45.65dB, SERNO: 1200005"
4.6758 -0.6656 27.21
5.099 -0.1819 26.47
5.5605 0.2163 25.54
6.0638 0.5242 24.01
6.6126 0.7657 20.93
7.2111 0.933 17.8
7.8637 1.0575 16.34
8.5755 1.1398 15.25
9.3516 1.19 13.25
10.198 1.2168 11.03
11.121 1.2295 10.39
12.1275 1.2294 9.4
13.2252 1.2192 7.76
14.4221 1.2116 7.58
15.7274 1.217 6.29
17.1509 1.2053 5.98
18.7032 1.2048 5.02
20.396 1.2056 4.89
22.242 1.2073 4.01
24.255 1.2102 3.61

Originally Posted by noah katz

Anyone have a working link to the v3.10 upgrade?

PE's http://www.parts-express.com/pe/show...number=390-790 is broken

thanks

Originally Posted by Phillips751

I have checked my TXT file and the sens factor = -4.083, maybe this might be the cause, yours is -45.65, big difference?

Originally Posted by bob_m10

http://www.daytonaudio.com/index.php...nt-system.html

Originally Posted by bob_m10

Ok, I checked a few serial numbers above and below mine and all had the high sens factor. I will check with PE, someone must have made a mistake. Although this also gives reason to question every number in the file.

Originally Posted by elee532

Anyone else get a similar email from Parts Express:

"We discovered today that due to a misunderstanding on the side of our factory, your microphone was calibrated to a standard not intended to be used with the V2 software. We imagine you are eager to use your new OmniMic V2 and have shipped a no-charge replacement today. Since your original shipment (invoice #xxxx) is in transit to you, we requested Fed Ex to intercept delivery and route the shipment back to us. In the unlikely event your original shipment is delivered, just let me know and I will send you a postage paid return label.

I hope you will accept our apologies for any inconveniences or disappointment this issue may have created for you."

Originally Posted by bob_m10


I have not received an email yet but that is good news that they are taking care of the problem. Too bad for PE, all the QC problems with the last manufacture and then this problem arises during the first few shipments with the new. I will have to give them another call in the morning to see if mine is on the way. -Bob

Originally Posted by DaytonAudio

We'll take care of you Bob, just give us a call. We feel that even though we had this initial problem, the hardware and software are solid and function very well together.

Originally Posted by bob_m10

Hi All:

I removed the calibration file on my OM-V2 and it works much better for now. Certainly not accurate but at least I can begin to experiment with it while waiting for the fix.

I started with Frequency response using track two sine sweep and I placed the mic in my normal sitting position. I was using two bookshelf speakers with the sub on. Two questions:

1) With each iteration of the sweep, the FR seems to jump around +-2db or so at all frequencies although more in the lower end. Is that normal?

2) I recently upgraded speakers so I decided to see the difference in FR. The attached graph show a plot of both sets. I was surprised how similar the plots are. I expected them to be about the same under the crossover (60Hz) but I expected more differences above. Do small differences translate into large differences when listening? In my listening tests, I found these two sets of speakers more similar than different for sure.

Thanks Bob

Originally Posted by bob_m10

Hi All:

I removed the calibration file on my OM-V2 and it works much better for now. Certainly not accurate but at least I can begin to experiment with it while waiting for the fix.

I started with Frequency response using track two sine sweep and I placed the mic in my normal sitting position. I was using two bookshelf speakers with the sub on. Two questions:

1) With each iteration of the sweep, the FR seems to jump around +-2db or so at all frequencies although more in the lower end. Is that normal?

2) I recently upgraded speakers so I decided to see the difference in FR. The attached graph show a plot of both sets. I was surprised how similar the plots are. I expected them to be about the same under the crossover (60Hz) but I expected more differences above. Do small differences translate into large differences when listening? In my listening tests, I found these two sets of speakers more similar than different for sure.

Thanks Bob

Originally Posted by Phillips751

Hi Bob good to see you are getting the mic sorted. What sort of connection is on your V2 mic, is it normal USB or Micro USB?

Try increasing your volume, around 75db. This will make the graph more steady due to noise (background). You might think it is very quiet but noise to the ear can be deceiving.

The new mic might give you a different reading, but this anyway.

Originally Posted by goneten

I am interested in buying this but should I rather wait until these mic issues are resolved ? I live in South Africa so if there is an issue it won't take a few days to resolve. Just a little apprehensive given the mic story.

Originally Posted by goneten

...Just a little apprehensive given the mic story.

Originally Posted by laugsbach

Understood...I would ask PE to calibrated the OmniMic before shipment. BTW, my wife was born and raised in Johannesburg and recently, we went to a wedding in Cape Town...a very, very beautiful country.