Bose 901 IV Series User Manual

THE FOLLOWING STEPS ARE PROVIDED TO ENSURE
THAT THE EQUALIZER IS PROPERLY CONNECTED TO
YOUR HIGH-FIDELITY SYSTEM.
h. Place Che TAPE switch oi the eouaitzer In the MONITOR
position.
As you sli^ the LOW and HIGH FREQUENCY SOURCE
AND ROOM COMPENSATION controls Irom one ex-
treme to the other, you will lind a detent In the middle
ol the control’s travel. Place both the LOW arvd HIGH
FREQUENCY SOURCE AND ROOM COMPENSATION
controls at this position. Set the LOW FILTER control
In me "our* position.
• Place the TAPE MONITOR Of TAPE FUNCTION switch
of yoor control ampiifter in the NORMAL Or OUT position
j Turn your system on. (Be certain thet the equalizer is
piuge^ into the switched so outlet ot your control am-
pilfer and observe that the pilot light on the equalizer
IS on.)
k. Play the entire system as you normally would, using a
record player or AM/FM source tc be sure It 1$ operating
propefly. (Do not use a tape recorder for this portion of
the test.)
l, Turn the BALANCE control of the control ampllder to the
extreme left and right to check for proper connection ol
me left arvj right Channels, (if the channels are reversed,
check your amplifier or Speaker connections carefully)
You have r>ow tested the amplifier, wiring, and speaker
systems, but noi the equalizer, as It is not yet switched Into
the system.
If your system is not functioning at mis point, please go
back and check all connections, as any errors in connec¬
tion of your system must be corrected before proceedmg
further.
ffl.With me system now playing, turn the TAPE MONITOR
Of TAPE FUNCTION switch on your control ampliller to
the MONITOR or ON position, The Sound should stop, if
the sound does not stop, recheck Steps ’’a” through 'i,"
n. Now. place the equaiizer TAPE switch in the NORMAL
position, The sound should now return. If the sound
does not return and the equalizer pilot light Is on, then
the equalizer is probably connected Incorrectly,
Recheck Steps "a” through "i."
NOTE 1; THE TAPE MONITOR OF YOUR CONTROL
AMPLIFIER MUST BE LEFT ON' FOR THE ACTIVE
EQUALIZER TO BE IN THE CIRCUIT. CHECK THE TAPE
MONITOR SWITCH PERIODICALLY TO MAKE CERTAIN IT
IS IN THE -ON” POSITION.
NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT
COMPATIBLE WITH THE 901 SERIES I AND II SPEAKER
SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS
COMPATIBLE WITH THE 901 SERIES III SPEAKER
SYSTEM
EQUAIIZER
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Bose 901 IV Series Specifications

General

Impedance	8 Ohms
Enclosure Type	Acoustic suspension
Weight	35 lbs each
Configuration	Stereo
Drivers	Nine 4.5-inch full-range drivers
Crossover Frequency	No internal crossover