Bose Direct / Reflecting 901 Series 4 User Manual
Page 9
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THE FOLLOWING STEPS ARE PROVIDED TO ENSURE
THAT THE EQUALIZER IS PROPERLY CONNECTED TO
YOUR HIGH-FIDELITY SYSTEM.
h. Place ihe TAPE switch
of the equalizer
in the MONITOR
position.
As you slide the LOW and HIGH FREQUENCY SOURCE
AND ROOM COMPENSATION controls from one ex
treme to the other, you will find a detent in the middle
of the control's travel. Place both the LOW and HIGH
FREQUENCY SOURCE AND ROOM COMPENSATION
controls at this position. Set the LOW FILTER control
in the "out" position.
i.
Place the TAPE MONITOR or TAPE FUNCTION switch
of your cor^trol amplifier
in the NORMAL or OUT position.
j.
Turn your system on. (Be certain that the equalizer is
plugged into the switched ac outlet of your control am
plifier and observe that the pilot light on the equalizer
is on.)
EQUALIZER
AMPLIFIER
CONNECTIONS •
UPtRECORDER
- CONNECTIONS -
I
r
L R (.
R L R I
O
O
O
O
O O O O )
t— arrurl I mr I
—'
'— umii---------- mn
m
O
n
I
o
REC
6 o
CONTROL AMPLIFIER
.Ftguf*4
k. Play the entire system as you normally would, using a
record player or AM/FM source to be sure it is operating
properly. (Do not use a tape recorder for this portion of
the test.)
l
. Turn the BALANCE control of the control amplifier to the
extreme left and right to check for proper connection of
the left and right channels. (If the channels are reversed,
check your amplifier or speaker connections carefully.)
You have now tested the amplifier, wiring, and speaker
systems, but not the equalizer, as it is not yet switched into
the system.
If your system is not functioning at this point, please go
back and check alt connections, as any errors in connec
tion of your system must be corrected before proceeding
further.
m. With the system now playing, turn the TAPE MONITOR
or TAPE FUNCTION switch on your control amplifier 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 equalizer 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 111 SPEAKER
SYSTEM