I did some testing at various volume settings on my receiver up until the setting was at 0. It has been setup using the auto setup and a digital SPL meter. I re-calibrated the SPL meter with REW for the final test that is the longest one shown. Any advise, questions or room treatment suggestions would be really great. I could also manually adjust my equalizer settings if you see where I should do that. I didn't use any filters. A hush box fan was running nearby above the mic and my computer was behind the couch in the back of the room. When I played nothing it kept reading the background noise at around -20db. If it looks wrong I will do it again but I would have to bring my computer in there again. I plan to once I figure out how to do a waterfall. I copied and pasted my notes and images bellow.
GEAR:
RADIO SHACK DIGITAL SPL METER (STEREO HEADPHONE JACK LEFT OUTPUT)
PIONEER VSX1012 THX SELECT RECIEVER 90 WATT x 6 AT TWEETERS
LIBERTY THX/MONSTER/BETTERCABLES CABLES
5 MARANTZ MA50 THX (EARLY GENERATION) MONO AMPS (+1 ON RESERVE)
DENON 5200 THX ULTRA 2 CHANNEL AMP
CRYSTAL AUDIO 12THX SUB
6 POLK RTI70 FLOOR STANDING
POLK CSI40 CENTER CHANNEL (TWEETER MOD)
ROOM:
CONCRETE/FRAMING/1 LAYER DRYWALL
13.5 X 20 X 7'4"
OUTDOOR CARPET NO PADDING SPEAKER PLATFORMS, STAGE, FLOOR, RISERS, HUSH BOX
REAR LEFT & RIGHT REAR SPEAKER PLATFORMS ARE BASS TRAPS
CEILUME CEILING TILES, GENERIC CEILING TILES @ LEFT AND RIGHT WALLS DE COUPLED WITH CARPET
NO MORE THAN 12" OF GENERIC TILE WIDTH (WIDTH VARIES)
ADJACENT ONE CLOSET & LOBBY WITH SEALED SOLID CORE DOOR
AC VENT /WALL HEATER/HUSH BOX FAN
TWO ROWS OF THREE SEATS
PROJECTION NEC 6PG+ CRT, TOSHIBA HD A30, FOUCS ENHANCEMENTS CENTERSTAGE 2,
106" DALITE HIGH POWER
MANUAL ROOM TEST RESULTS:
31HZ-35HZ @ 85DB CEILING [MODERATE DISTORTION ISSUE]
70HZ-80HZ @ 101DB INTERNAL CEILING STRUCTURE [MINOR DISTORTION ISSUE]
45HZ DOOR [MAJOR DISTORTION ISSUE] (CORRECTABLE BY PULLING TIGHTLY SHUT)
APROX 47HZ @ 93DB INTERNAL BACK WALL [MINOR DISTORTION ISSUE]
57HZ-60HZ @ 98DB CEILING [MINOR DISTORTION ISSUE]
60HZ-63HZ @ 98DB CEILING [MODERATE DISTORTION ISSUE]
63HZ-67HZ @ 98DB [MINOR DISTORTION ISSUE]
MODERATE DISTORTION ISSUES MAY BE AUDIBLE
DURING MUSIC/MOVIES (OTHER FREQ MAY MASK THE ABILITY TO HEAR IT)
MORE:
USB VOLUME IS AT 0 - (BUT VARIED) EQUALIZER SETTINGS ARE SET AT ALL ADJUST- SETUP IS AUTO SETTING
ALL DB READING/FREQ RANGE ARE APROX AND WERE DONE USING THE SPL METER,
SPL METER MIC, AND REW (CONTINUED SEE TXT FILES AND IMAGES)
OCT 14, 2007
