Using the tips I got I made corrections to the layout and made further notes. I also corrected the ceiling height. These results are now done both using the same input as with the setup. I did not turn off my mains because a 50hz crossover would limit these results. See the notes for the color key. With these results I hope to make improvements.
all_energy_time.jpg
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- notes
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 7'6"
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 to the human ear
during music/movies (other frequences may mask the ability for them to be heard)
MORE:
USB volume @ 0 - Equalizer settings are set to all adjust - Setup is auto-setting
All db reading/frequency ranges are approximate adn done using a digital SPL meter,
it's mic, and REW version 4.0 (See images)
COLOR REFERENCE:
Red
-12db @ receiver
-.04db high @ check level
SPL meter @ 75db uncorrected
Green
-18 @ receever
-0.3db high @ check level
78db @ SPL meter uncorrected
Blue
-0db @ receiver
-0.1db high @ check level
SPL meter @ 87db uncorrected
Purple is average
OCT 15, 2007
- end notes