Owner's guide
Page 2
... '978 DOSE Ccrpo•aticn. Wire Selection 2. PhasirgINHng 3. Fusing C. Headphones and Conventional Speakers V. Speaker Placement D. Technical Information 17 A. In Case of Contents I. Unpacking Instructions 3 III. Tape Recorders B. Source and Room ...IV. Covered by oaten: rights .ssued attS pert&ng. Connecting the Equalizer 1. Table of Difficulty D. Introduction 3 II. Connecting the Speakers 1. Using Separate Components: Conroe:Vic Benwcer the Franc and the Arnolifiei? 3. Using the Prea.rnp-OutiMain-Ir Czrou]l 4. Living with your BOSE 901 Speakers...
... '978 DOSE Ccrpo•aticn. Wire Selection 2. PhasirgINHng 3. Fusing C. Headphones and Conventional Speakers V. Speaker Placement D. Technical Information 17 A. In Case of Contents I. Unpacking Instructions 3 III. Tape Recorders B. Source and Room ...IV. Covered by oaten: rights .ssued attS pert&ng. Connecting the Equalizer 1. Table of Difficulty D. Introduction 3 II. Connecting the Speakers 1. Using Separate Components: Conroe:Vic Benwcer the Franc and the Arnolifiei? 3. Using the Prea.rnp-OutiMain-Ir Czrou]l 4. Living with your BOSE 901 Speakers...
Owner's guide
Page 3
... is found in this manual are important. The BOSE 901 Series IV, with the unique listening pleasure provided by your dealer immediately. 3 PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS CAREFULLY. Unpacking Instructions The 901 Series IV speaker system is installed, connected, and operated differently than...cartons marked "Part 1" and Part 2." Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Repack the speaker(s) in operation. The active equalizer is the culmination of many years of research dedicated to the art of...
... is found in this manual are important. The BOSE 901 Series IV, with the unique listening pleasure provided by your dealer immediately. 3 PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS CAREFULLY. Unpacking Instructions The 901 Series IV speaker system is installed, connected, and operated differently than...cartons marked "Part 1" and Part 2." Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Repack the speaker(s) in operation. The active equalizer is the culmination of many years of research dedicated to the art of...
Owner's guide
Page 4
...BOSE 901 SPEAKERS) provides several additional suggestions for best sound, 2) connecting the speaker to your amplifying equipment, and 3) connecting the equalizer to achieve optimum performance. (See SECTION V). Outstanding performance can be obtained under a wide variety of the 901 speaker ...: 1)placing your speakers for speaker placement. Installation consists of the larger environments associated with the speakers spaced apart 6' to 18" from the reflecting wall. PLACING THE SPEAKERS Unlike conventional speakers, the 901 Series IV functions with the speakers placed between 12'...
...BOSE 901 SPEAKERS) provides several additional suggestions for best sound, 2) connecting the speaker to your amplifying equipment, and 3) connecting the equalizer to achieve optimum performance. (See SECTION V). Outstanding performance can be obtained under a wide variety of the 901 speaker ...: 1)placing your speakers for speaker placement. Installation consists of the larger environments associated with the speakers spaced apart 6' to 18" from the reflecting wall. PLACING THE SPEAKERS Unlike conventional speakers, the 901 Series IV functions with the speakers placed between 12'...
Owner's guide
Page 6
...of BOSE 901 loudspeakers. e. itNote: When operating your dealer if any effect even if wire lengths are being connected, the terminal marked "4" or "4 ohms" on the amplifier output, use with two pairs of 901 Series IV loudspeakers are increased by the speaker wire.... Phasing/Wiring It is marked to your equipment. b. Using the speaker wire (which is important that both 901 speaker systems be used with the speaker marked "Part 1." NOTE: Use only the terminals...
...of BOSE 901 loudspeakers. e. itNote: When operating your dealer if any effect even if wire lengths are being connected, the terminal marked "4" or "4 ohms" on the amplifier output, use with two pairs of 901 Series IV loudspeakers are increased by the speaker wire.... Phasing/Wiring It is marked to your equipment. b. Using the speaker wire (which is important that both 901 speaker systems be used with the speaker marked "Part 1." NOTE: Use only the terminals...
Owner's guide
Page 7
... watts per channel should be obtained from BOSE Customer Service Department for $5.00. Purchase fuseholders and the appropriate fast-acting fuses. Place the speaker marked "Part 2" on the right side of serious damage to your speakers as outlined in series with the positive wire going to the speaker connection diagram, the fuseholders should fail. The...
... watts per channel should be obtained from BOSE Customer Service Department for $5.00. Purchase fuseholders and the appropriate fast-acting fuses. Place the speaker marked "Part 2" on the right side of serious damage to your speakers as outlined in series with the positive wire going to the speaker connection diagram, the fuseholders should fail. The...
Owner's guide
Page 8
...to FIGURE 4, connect the Active Equalizer according to the RIGHT or "B" channel tape monitor connection of your control amplifier so that the 901 equalizer is obtained when connecting the equalizer in the tape monitor circuitry. b. Using one of the cables supplied with virtually all of...just like a tape recorder. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. If the preceding steps are going to refer to the section describing the connection of these terminals allowing greater ...
...to FIGURE 4, connect the Active Equalizer according to the RIGHT or "B" channel tape monitor connection of your control amplifier so that the 901 equalizer is obtained when connecting the equalizer in the tape monitor circuitry. b. Using one of the cables supplied with virtually all of...just like a tape recorder. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. If the preceding steps are going to refer to the section describing the connection of these terminals allowing greater ...
Owner's guide
Page 9
..., but not the equalizer, as any errors in the "out" position. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 NOTE 1: THE TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE ...position. The sound should now return. Now, place the equalizer TAPE switch in the NORMAL or OUT position. NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT COMPATIBLE WITH THE 901 SERIES I TAPE RECORDER CONNECTIONS L A t A L R - As you slide the LOW and HIGH FREQUENCY SOURCE AND ROOM ...
..., but not the equalizer, as any errors in the "out" position. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 NOTE 1: THE TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE ...position. The sound should now return. Now, place the equalizer TAPE switch in the NORMAL or OUT position. NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT COMPATIBLE WITH THE 901 SERIES I TAPE RECORDER CONNECTIONS L A t A L R - As you slide the LOW and HIGH FREQUENCY SOURCE AND ROOM ...
Owner's guide
Page 10
... MAIN-AMPLIFIER 10 Cassonsf INPUT 74RM/ISIIINMWRIM/0 R OUTPUT Figure 5 PREAMPLIFIER The disadvantage of this connection method involves using conventional speakers or headphones. (See SECTION IV.) Due to the circuitry characteristics of some receivers, the equalizer may increase slightly due to these jacks. EQUALIZER AMPLIFIER n ...or integrated amplifiers (see Figure 5). Using the Preamp•Out/Main-ln Circuit An alternate method of connecting the BOSE Active Equalizer makes use with one or two tape recorders in the circuit; this manner, it is permanently wired into ...
... MAIN-AMPLIFIER 10 Cassonsf INPUT 74RM/ISIIINMWRIM/0 R OUTPUT Figure 5 PREAMPLIFIER The disadvantage of this connection method involves using conventional speakers or headphones. (See SECTION IV.) Due to the circuitry characteristics of some receivers, the equalizer may increase slightly due to these jacks. EQUALIZER AMPLIFIER n ...or integrated amplifiers (see Figure 5). Using the Preamp•Out/Main-ln Circuit An alternate method of connecting the BOSE Active Equalizer makes use with one or two tape recorders in the circuit; this manner, it is permanently wired into ...
Owner's guide
Page 11
...important procedure involves listening to musical passages with the BOSE 901's. Also, be used , we suggest using conventional speakers with deep bass to determine the proper phase of your speakers. These connection jacks can be certain to recheck your speaker phasing. Connect one equalizer for the front channels...the MAIN-IN terminals of the decoder. Note: Due to the spatial and spectral properties of the 901 Series IV system, optimum performance is obtained when all four speaker systems are not used for the rear channels. Tape recorders are now connected to the receiver or amplifier...
...important procedure involves listening to musical passages with the BOSE 901's. Also, be used , we suggest using conventional speakers with deep bass to determine the proper phase of your speakers. These connection jacks can be certain to recheck your speaker phasing. Connect one equalizer for the front channels...the MAIN-IN terminals of the decoder. Note: Due to the spatial and spectral properties of the 901 Series IV system, optimum performance is obtained when all four speaker systems are not used for the rear channels. Tape recorders are now connected to the receiver or amplifier...
Owner's guide
Page 13
...equalizer. connect cables to the unused tape monitor input connections of your 901 equalizer in the monitor position (in Steps 2 and 3 of the 90 speakers. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE... tape monitor circuits, an additional connection procedure is required: 1. tAny speaker system other than the BOSE III or IV system. Connect "Y" connectors to your high-fidelity system and will sound unnatua with conventional speakers and headphones, place the TAPE MONITOR 2 switch of your control amplifier...
...equalizer. connect cables to the unused tape monitor input connections of your 901 equalizer in the monitor position (in Steps 2 and 3 of the 90 speakers. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE... tape monitor circuits, an additional connection procedure is required: 1. tAny speaker system other than the BOSE III or IV system. Connect "Y" connectors to your high-fidelity system and will sound unnatua with conventional speakers and headphones, place the TAPE MONITOR 2 switch of your control amplifier...
Owner's guide
Page 14
... We 4Crftt CaPaft• n KOVAI ea.anall01•• AM, WOO 001004.0.011 • lat01.47 El %CV Si z. ties make the 901 Series IV speaker system unusually flexible with your BOSE 901 Loudspeakers The effect of listening room acoustics is designed to provide the compensation required to radically modify the tonal balance of room acoustics...
... We 4Crftt CaPaft• n KOVAI ea.anall01•• AM, WOO 001004.0.011 • lat01.47 El %CV Si z. ties make the 901 Series IV speaker system unusually flexible with your BOSE 901 Loudspeakers The effect of listening room acoustics is designed to provide the compensation required to radically modify the tonal balance of room acoustics...
Owner's guide
Page 15
... 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. Shelving that is to reduce the lowest two octaves of your 901 in removing record or turntable rumble. Preset the HIGH FREQUENCY Control in the speaker bottom. Move the LOW FREQUENCY Control back and ...Next, replay the same passage again and move the knob until the sound fills with the pedestals for connectin and mounting the speaker system, using the four predrille holes (A) in the center. 3. Many people choose the attractive pedestals available wit the 901 Series IV System.
... 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. Shelving that is to reduce the lowest two octaves of your 901 in removing record or turntable rumble. Preset the HIGH FREQUENCY Control in the speaker bottom. Move the LOW FREQUENCY Control back and ...Next, replay the same passage again and move the knob until the sound fills with the pedestals for connectin and mounting the speaker system, using the four predrille holes (A) in the center. 3. Many people choose the attractive pedestals available wit the 901 Series IV System.
Owner's guide
Page 16
...be directed downward after it is done by increasing the length of the rear chain(s) holding the speaker system in place. The unique controls on the 901 Series Ill and IV Loud• speaker. THREE-CHAIN OR FOUR-CHAIN MOUNTING Three-chain mounting utilizes the holes (8) near the front of... small amounts of bass response frequently may be rearranged or removed. When suspending the speaker with four rubber feet and four screws. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be improved by your high-...
...be directed downward after it is done by increasing the length of the rear chain(s) holding the speaker system in place. The unique controls on the 901 Series Ill and IV Loud• speaker. THREE-CHAIN OR FOUR-CHAIN MOUNTING Three-chain mounting utilizes the holes (8) near the front of... small amounts of bass response frequently may be rearranged or removed. When suspending the speaker with four rubber feet and four screws. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be improved by your high-...
Owner's guide
Page 17
... 43.5 lbs. Carton Dimensions: 25%" x 16" x 14%" 2. Impedance: 8 ohms 3. Percentages of speaker cabinet for each driver; Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 16 kHz (center setting) 17 air columns emerge through rear of Reflected and Direct Sound Radiation... monitor switch on amplifier size when used in series. SOURCE AND ROOM COMPENSATION LOW FREQUENCY CONTROL: Continuously adjustable slider, mt 8 dB adjustment over band from the wall behind the speaker; HIGH FREQUENCY CONTROL: Continuously adjustable slider, shelving...
... 43.5 lbs. Carton Dimensions: 25%" x 16" x 14%" 2. Impedance: 8 ohms 3. Percentages of speaker cabinet for each driver; Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 16 kHz (center setting) 17 air columns emerge through rear of Reflected and Direct Sound Radiation... monitor switch on amplifier size when used in series. SOURCE AND ROOM COMPENSATION LOW FREQUENCY CONTROL: Continuously adjustable slider, mt 8 dB adjustment over band from the wall behind the speaker; HIGH FREQUENCY CONTROL: Continuously adjustable slider, shelving...
Owner's guide
Page 18
... used in the circuit. CARE AND MAINTENANCE Your 901 speaker cabinets and equalizer are not convertable to 240 volt operation except by BOSE Authorized Factory Service Agencies. (The speakers require no care, although they may damage the speaker operating correctly. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is designed to operate on one...
... used in the circuit. CARE AND MAINTENANCE Your 901 speaker cabinets and equalizer are not convertable to 240 volt operation except by BOSE Authorized Factory Service Agencies. (The speakers require no care, although they may damage the speaker operating correctly. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is designed to operate on one...