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Hi All, Having recently bought a Dayton Omnimic V2 measurement system (thanks to site sponsor Paul Spencer/The Loudspeaker Kit), I thought I'd start a discussion thread for those learning how to use it. It certainly seems like a capable piece of kit, but I have a long way to go to become proficient in it's use. Hopefully other forum users could help those of us who are keen to learn, helpful tips and hints as well as pitfalls for the unwary. The kit comes with the USB microphone, a very small tabletop mic stand, 6' USB lead, case, software disc and test tones disc. The test tones are tailored specifically for use with the system. There is a 60 page Help Manual on the software disc which seems pretty comprehensive. Discussion of other measurement systems or methods are also welcome. Regards, SS

I am in the process of amassing pro amplifiers, 18" drivers, microphone, downloading software etc so I can build 2 bass bins and setup my speakers after I refit my room. The 2 x 18" bass bins will be at the front of the room, and my current 12" sub will be the bass support at the back of the room. Paul Spencer has previously assisted with taking ~50 measurements of my room using REW etc, so I know what my room does bass wise. So part of my plan at Bathurst this year, was to setup my laptop with external sound card, REW, microphone, etc and learn more about setting up test gear & using REW & using this new found knowledge back at home. Well it seems that after a lot of fiddling, swearing, cable swapping, swearing, looping back, swearing etc my particular effing laptop wouldn't do it with the internal sound card, an external sound card or any other effing sound card or external device. But... It worked straight away & as easy as pie on 2 other laptops (one was a Mac one was using Win 7). God I hate computers some days. Make that most days. Even though it didn't work on my laptop, I was still able to learn from others efforts and it again was reinforced how for a coupla hundred dollars and an investment in some time; testing and measuring can remove days, weeks & months of effing around & basically guessing as to what we are doing when trying to optimise speakers in a room. You could still not have it right after months. We worked our way through a white paper on optimising speakers for stereo listening (reference to follow). The ability to identify changes in not just frequency response, but also other things like determine noise floor, waterfall plots, room echo etc cannot be underestimated. So although my laptop is crap for this type of function, I will either get another/borrow one or use my PC to do the testing in my room once I have built my bass bins. How we could spend many $000's of dollars on vinyl, CDs, etc & many more $000's on equipment and setting up rooms and not spend a coupla hundred dollars on some test gear, or spend a coupla hundred $ paying someone to do it for you is beyond me. So, if you are one of the "microphones are for singers" crew, I strongly recommend you check out what some measurement can really do. Maybe you know someone with some test gear, and a laptop or computer (that isn't like mine). It is a real eye opener. Graham

OK, so I've downloaded Room EQ Wizard and I'm looking forward to spending many hours playing with it, using it to evaluate my new lounge acoustics and getting very confused about room frequencies and nodes and all that great stuff, but... I need a microphone to play with it properly and since I have such a broad range to choose from (from $12 to over $200, and that's just on ebay) I was just wondering, does the microphone matter much? Or, to put it another way, which microphone should I buy to share my future analysis trials and tribulations with me.

Hi, I just got the Dayton Audio IMM-6 (came quite quick, thanks guys) - but so far I haven’t seen great results with it compared to using my UMIK-1 USB mic (side by side).. obviously it's quite difficult to compare apples with apples when the software is completely different, but the difference in response I'm seeing for relatively basic measurements makes me wonder if there is a HP filter in the microphone circuitry of my android tablet (as is mentioned as being quite possible for some mobile devices). Anybody else using these and getting good results from them? I see a lot of positive comments "on the web" but none from anybody who has sat them besides another calibrated measurement mic. details: Using a Samsung Galaxy Note 8 tablet, and the recommended software "audiotool", plus tried with a Galaxy Note 1 with Cyanogenmod. Compared with WinXP laptop running ARTA and REW with the Umik-1

Item: DEQX Microphone Price Range: Item Condition: New or Used Extra Info: DEQX provide a Standard Calibration Kit with every DEQX. The Reference Calibration Kit is an optional upgrade or may be purchased later. Let me know what you have, Standard or Reference and how much you want for it. Has to be a DEQX serial numbered mic as they provide the cal file. For use with a HDP3. Cheers HB