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Most Recent Bose 901 Series IV Questions
Loose Terminal
how do i open the speaker to tighten a terminal post that has come loose?
how do i open the speaker to tighten a terminal post that has come loose?
(Posted by alanlynn 2 years ago)
I Want S Service Manual For 901 Iv Ver 1
I need to find the cause of a distorted sound in my left channel of my 901 series IV version 1 activ...
I need to find the cause of a distorted sound in my left channel of my 901 series IV version 1 activ...
(Posted by octoman13 2 years ago)
Bose 901 Series Iv Equalizer
having a hard time setting up equalizer with low and high frequency. Can you help
having a hard time setting up equalizer with low and high frequency. Can you help
(Posted by Chrisdenosta794 7 years ago)
Can You Fix Bose 901 Series Iv Equalizer
(Posted by DYOUNskyl 9 years ago)
How Do You Hook Up 901 Bose Speakers And Equalizer To Amplifier With Diagram
(Posted by BabylMbona 10 years ago)
Bose 901 Series IV Videos
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Popular Bose 901 Series IV Manual Pages
Owner's guide - Page 3
... loudspeakers. The detailed installation and placement instructions found in the carton filler material along with its high proportion of reflected sound, nine full-range drivers, and a newly-designed electronic active equalizer, is found in operation. PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS CAREFULLY. Unpacking Instructions
The 901 Series IV speaker system is the culmination...
Owner's guide - Page 4
... toward the reflecting wall (the wall behind the speaker). PLACING THE SPEAKERS
Unlike conventional speakers, the 901 Series IV functions with a live
performance.
Distances closer to develop around the speaker system.
1.
Point this portion of three parts: two speakers (marked "Part 1" and "Part 2") and an electronic Active Equalizer packed in most rooms.
If you obtain the...
Owner's guide - Page 6
... equalizer. The table below summarizes maximum wire lengths for future electronic Flevelopments and should be identical (see Figure 3) so that each wire can be unable to your amplifier, if there is not capable of 4-ohm Operation with the speaker marked "Part 1." b.
If two pairs of 901 Series IV loudspeakers are used to connect the speakers to your equipment. Installation...
Owner's guide - Page 7
... series with a fast-blow, 3-amp fuse. M'Jfv.:
AMPLIFIER OR RECEIVER
LEFT
RIGHT
CHANNEL OUTPUT CHANNEL OUTPUT
POS COM
POS
COM
+
Figure3
Fusing Any loudspeaker is required. The use of serious damage to damage if the amplifier powering it should be
obtained from BOSE Customer Service Department for the right amplifier channel. Ask for part...
Owner's guide - Page 8
... may also be due to the following instructions:
a. Remember, the equalizer is obtained when connecting the equalizer in this procedure, you how to determine if your control amplifier. g. Installation
C. CONNECTING THE EQUALIZER
IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901
SERIES IV SPEAKER SYSTEM.
1.
Using one of the cables...
Owner's guide - Page 9
... THE FOLLOWING STEPS ARE PROVIDED TO ENSURE
THAT THE EQUALIZER IS PROPERLY CONNECTED TO YOUR HIGH-FIDELITY SYSTEM. h. Set the LOW FILTER control in the middle of your ...II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM.
9 Place the TAPE switch of the equalizer in connection of the test.)
I ." plifier and observe that the equalizer ...
Owner's guide - Page 10
... it is permanently wired into the circuit. (See SECTION IV.) If you do connect the equalizer in this method of connecting the BOSE Active Equalizer makes use with one or two tape recorders in the ...the equalizer is suggested that the gain controls of the PREAMP-OUT and MAIN-IN jacks provided by many manufacturers on their receivers or integrated amplifiers (see Figure 5).
Installation
2. ...
Owner's guide - Page 11
...'s instruction manual for separating the main and preamplifier sections of the decoder. R 7I 1
0
0
0
0 I . OMNI - For separate components, connect the equalizer after the output of the unit. (This is usually accomplished by Bose 'to match the 901 system when used with deep bass to determine the proper phase of 901s are used in the channel powering the 901 speakers...
Owner's guide - Page 12
... RECORDERS
Since the Active Equalizer is connected to the RIGHT or "B" channel INPUT (or LINE IN) jack of the tape recorder.
4. Installation of a tape recorder. t9..; YS
EQUALIZER
AMPLIFIER CONNECTIONS
TAPE ... the TAPE switch on the equalizer for the connection of the tape recorder is normally connected, extra jacks are provided on the 901 Active Equalizer in the MONITOR position (in...
Owner's guide - Page 13
B. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE CIRCUIT. control amplifier in the OFF or NORMAL position when playin conventional speakers or headphones with your control amplifier.
4. tAny speaker system other than the BOSE III or IV system. Connect "Y" connectors to both treble and bass being emphasized. With...
Owner's guide - Page 14
... of the midbass of any specific compensation requirement and therefore cannot compensate for the effects of the amplifier used with the 901 Series IV in high-frequency efficiency, and high-power handling capabili- The HIGH FREQUENCY CONTROL is the new
I
driver used with the 901 Series IV. This effect can significantly adjust the speaker's presence and sonic detail over...
Owner's guide - Page 15
...FILTER CONTROL
The 901 Active Equalizer features a newly-designed LOW FILTER Control. Many people choose the attractive pedestals available wit the 901 Series IV System. Preset the HIGH FREQUENCY Control in the speaker bottom. "Ii :011 ISL0UT
1
OW %ITER
315
1.00O
1001
FREQUENCY IN CYCLES PER SECOND
901 IV EQUALIZER CONTROL RESPONSE
10.000 20110
C. SPEAKER PLACEMENT
Several options...
Owner's guide - Page 16
... your BOSE 901 Loudspeakers
If you have placed the speakers quite high in your listening room, the sound can be improved by your 901 IV Equalizer are especially helpful in compensating for the characteristics of rugs and heavy drapery, which allow low frequencies to pass through rather than reflecting them on the 901 Series Ill and IV Loud• speaker...
Owner's guide - Page 17
... system Is packed in series. The Speaker
Dimensions: 21" Wide x 12%" High x 13" Deep
Weight: 35 lbs. Impedance: 8 ohms
3. one speaker directed into the listening area to provide the optimum ratio of reflected to 400 Hz. low impedance (0.9 ohms) voice coils connected in two cartons marked "Part 1" and "Part 2." The Active Equalizer
TAPE MONITOR SWITCH: Replaces tape monitor switch on...
Owner's guide - Page 18
... trouble still persists, contact your dealer. D.
If you are defective, and if so.
Technical Information
B. 110.220 VAC VOLTAGE CONVERSION
The BOSE Series IV Equalizer is designed to operate on one speaker sounds defective, DO NOT switch the speaker cables, as this manual.
Equalizers manufactured for obtaining service is defective. CARE AND MAINTENANCE
Your 901 speaker cabinets...
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