Sonance CINEMA TWO SUB SYSTEM - Manual (Page 8)

Other test CDs are available from your Sonance dealer.
Always take SPL readings from ear level at the listening position.
NOTE: If you experience buzzing or rattling during strong bass passages, it may be necessary to
relocate or remove items in the listening room which become excited by the high energy levels
reproduced by your Cinema Two SUBs.
16 15
BYPASS: THX controllers provide a special facility to calibrate subwoofers.When installing the Cinema
Two SUB system with such a controller, follow the controller’s instructions for calibrating subwoofer
output.When used with THX components, the THX setting of the MODE switch assures proper output
level of our Cinema Two SUBs. The NORM setting may be used to defeat this feature if you prefer a
different bass level for music listening.
PHASE: When used in conjunction with some components, the bass response of the Cinema Two SUBs
will be greater with the phase switch in the down (180) position. Listen to music with significant bass
content with the switch in each position to determine the correct setting for your system. Sitting in the
normal listening position, listen while a friend changes the phase switch position. The audibly louder
setting is correct. Alternately, use an SPL (sound pressure level) meter to determine which setting
produces greater output in the 75-125 Hz range. Inexpensive SPL meters are available from Radio
Shack stores.
LEVEL: After the correct phase has been determined, you may arrive at the desired level setting for
non-THX listening by measuring test tones starting above 1000 Hz down to 50 Hz. To achieve smooth
transition between the subwoofers and other drivers, it may be useful to employ test tones available on
compact disk and a SPL meter. Adjust the level control on the subwoofer amplifier until all tones
measure the same SPL. Some THX controllers include the THX Wow disk with test tones with the
controller manual. Most controllers produce a pink noise signal for speaker calibration.
AUTO ON
OFF ON
LINE LINE
OUT
IN
L
R
WARNING: HAZARDOUS ENERGY, MAKE PROPER SPEAKER
CONNECTIONS; SEE OWNERS MANUAL BEFORE USING
DISCONNECT SUPPLY CORD BEFORE CHANGING FUSE
ATTENTION:
DEBRANCHER AVANT DE REMPLACER LE FUSIBLE
ATTENTION: VOIR LE CAHIER D' INSTRUCTION
ATTENTION: UTILISER UN FUSIBLE DE RECHANGE DE MEME TYPE
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD USE ONLY SAME TYPE AND RATING FUSE.
47K
CAUTION
RISK OF ELECTRIC SHOCK DO NOT OPEN
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR
SONANCE S/N A DIVISION OF DANA INNOVATIONS SAN CLEMENTE, CA 92672
+ + - - L R
SONAMP CINEMA 2120
AC FUSE
3AG 8A
120VAC/60Hz
750 VA
USE 8 Ω SPEAKERS
SPEAKER
+ - -