|
TAD Speakers & Electronics Technical Audio Devices Laboratories |
|
Thread Tools | Display Modes |
#31
|
|||
|
|||
Joost,
I would be interested in how you take the room measurements and what software/hardware you use. |
#32
|
||||
|
||||
Quote:
|
#33
|
|||
|
|||
Quote:
Behringer ECM8000 measurement mic M-Audio Fast track mkII microphone preamp Software to take measurements and generate filters: REW VST plugin to apply EQ filters in pure music during playback on the macmini: FabFilter ProQ If interested I can explain the workflow in a different thread, you would need to be using a computer as a source and a player that support VST plugins... It's good though: truly 100% transparent digital EQ with no unnecessary AD/DA conversion. |
#34
|
||||
|
||||
Quote:
You can get a calibrated microphone from Dayton for about $80. Just do a search or go to the Room Equalization Wizard forum at Home Theatre Shack. You'll need an M-Audio USB mike preamp for about $100, and in addition to the Radio Shack SPL meter, you will need a microphone stand, and long RCA plug/1/4" mic plug cables, a long mic cable, and a long USB cable. Download Room Equalization Wizard (the REW software Joost referred to above) from Home Theatre Shack. I would recommned the Dayton mike over the Behringer as the guy who sold me mine said the Dayton is more accurate to the NIST traceable standard and shows less variation from mike to mike. It will come with a CD that has a calibration file that you will import into REW so that the software can reference against the measured performance of your mike. See my post in the recent "Objectivist/Subjectivist" thread to see some of my actual in-room frequency responses. Joost is using effectively the exact same setup that I am...it works really well, and having some data to look at can really help with speaker placement, listening position placement, and sub integration if required. You will find that pretty much EVERYTHING will have an influence on the measured in-room frequency response, including you sitting in your chair, or shifting the mike/listening position by as little as six inches. Some visual data can really help to optimize things.
__________________
Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. Last edited by Puma Cat; 04-02-2012 at 03:58 PM. |
#35
|
||||
|
||||
This is what I use, it's a great all in one solution, no SPL meter needed...: Dayton Audio OmniMic V2 Precision Audio Measurement System 390-792
__________________
2CH: W4S DAC-2, W4S STP-SE, W4S SX-500, Custom ScanSpeak/SEAS Towers, Hot Rodded Rega TT and Jolida JD9 Phono Pre, Asynch PC Transport, WireWorld Gold Eclipse 6 XLR HT: Marantz AV7005, W4S Mini MC-5, Custom Waveguide Towers, SVSPB12-Plus/2 |
#36
|
||||
|
||||
That looks like a sweet mike and setup, Face, but it looks to be a higher specification than mine. My Dayton mic was about $80 or thereabouts. The REW software from Home Theatre Shack is free, and I bought my USB mic preamp from Amazon for $99.
Here's a pic of my setup with the mic in the listening chair. The little silver box sitting on the red yoga mat (which covers the reflective glass top on the coffee table) is the USB mic preamp. You can see why you need long cables.
__________________
Lumin P1 streamer/DAC/preamp, Constellation Inspiration integrated TT: Michell Gyro SE MkII, SME V, Koetsu Urushi Vermilion, EAR324. Harbeth 30.2s, REL R-305, Shunyata Alpha V2 ICs, Alpha V2 SPs, Sigma XC, Sigma NRv2, Omega QR-s & Alpha NRv2 PCs, segmented Altaira SG stack w/ Alpha & Omega CGCs, Everest 8000 PD. Remote Server Room: Uptone EtherREGEN, AfterDark Master Clock & LPS, Alita, Battle Angel, (Akasa NUC Roon Core), iFi DC Purifiers (for SMPS used for Alita & router), Shunyata Gemini combo power distributor & Altaira-type CG GP-NR hub, Venom & Alpha CGCs, Shunyata NRv14 power cords for digital components. Last edited by Puma Cat; 04-02-2012 at 04:01 PM. |
#37
|
|||
|
|||
Thanks Joost, Mike, Stephen,
I'll start getting everything together and when my 911's land, I'll get some measurements going and see where I am at with my freq. response. This should be fun. |
|
|
Audio Aficionado Sponsors | |