Owner's guide
Page 2
...Equalizer 1. Using Separate Components: Conroe:Vic Benwcer the Franc and the Arnolifiei? 3. Connecting Other Equipment 12 A. Tape Recorders B. Speaker Placement D. PhasirgINHng 3. Care and Maintenance VII. Covered by oaten: rights .ssued attS pert&ng. Fusing C. Using the Prea.rnp-OutiMain-Ir Czrou]l 4. Living with your BOSE 901... Speakers 14 A. Room Acoustics VI. Table of Difficulty D. Introduction 3 II. Placing the Speakers B. Connecting the Speakers 1. Wire Selection 2. Using the Tape Monitor Circuit 2. Using 1-cur-Chanre IV....
...Equalizer 1. Using Separate Components: Conroe:Vic Benwcer the Franc and the Arnolifiei? 3. Connecting Other Equipment 12 A. Tape Recorders B. Speaker Placement D. PhasirgINHng 3. Care and Maintenance VII. Covered by oaten: rights .ssued attS pert&ng. Fusing C. Using the Prea.rnp-OutiMain-Ir Czrou]l 4. Living with your BOSE 901... Speakers 14 A. Room Acoustics VI. Table of Difficulty D. Introduction 3 II. Placing the Speakers B. Connecting the Speakers 1. Wire Selection 2. Using the Tape Monitor Circuit 2. Using 1-cur-Chanre IV....
Owner's guide
Page 3
... electronic active equalizer, is packed in the original carton with the unique listening pleasure provided by your dealer immediately. 3 The listening enjoyment you for possible use later. PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS CAREFULLY. II. Unpacking Instructions The 901 Series IV speaker system is... "Part 1" and Part 2." Unpack both cartons carefully. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. I. Introduction Thank you will be rewarded with the complete packing material and notify your...
... electronic active equalizer, is packed in the original carton with the unique listening pleasure provided by your dealer immediately. 3 The listening enjoyment you for possible use later. PLEASE TAKE THE TIME TO READ THESE INSTRUCTIONS CAREFULLY. II. Unpacking Instructions The 901 Series IV speaker system is... "Part 1" and Part 2." Unpack both cartons carefully. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. I. Introduction Thank you will be rewarded with the complete packing material and notify your...
Owner's guide
Page 4
...your speakers and would like more information, SECTION V (LIVING WITH YOUR 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). A. Speakers should be obtained...(see Figure 1). If you place the speakers within the ranges suggested here, the unique adjustments found on the 901 Series IV equalizer will help you to your listening room, simulating the spatial characteristics of placement positions. (See Figure 2.) The ...
...your speakers and would like more information, SECTION V (LIVING WITH YOUR 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). A. Speakers should be obtained...(see Figure 1). If you place the speakers within the ranges suggested here, the unique adjustments found on the 901 Series IV equalizer will help you to your listening room, simulating the spatial characteristics of placement positions. (See Figure 2.) The ...
Owner's guide
Page 6
...Following the guidelines provided, the most discerning listener will be used.)11- Phasing/Wiring It is required. a. If two pairs of 901 Series IV loudspeakers are sold as "add-on the receiver or amplifier should not be identified for both speakers work together (in stereo, only... audible coloration of the sound and loss of BOSE 901 loudspeakers. These speakers are being connected, the terminal marked "4" or "4 ohms" on " pairs and can be identical (see Figure 3) so that each wire can be purchased without the equalizer. Contact your equipment. Installation B. The table ...
...Following the guidelines provided, the most discerning listener will be used.)11- Phasing/Wiring It is required. a. If two pairs of 901 Series IV loudspeakers are sold as "add-on the receiver or amplifier should not be identified for both speakers work together (in stereo, only... audible coloration of the sound and loss of BOSE 901 loudspeakers. These speakers are being connected, the terminal marked "4" or "4 ohms" on " pairs and can be identical (see Figure 3) so that each wire can be purchased without the equalizer. Contact your equipment. Installation B. The table ...
Owner's guide
Page 8
... IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. The equalizer can be used with the equalizer, connect the LEFT channel OUTPUT of the equalizer to the LEFT or "A" channel TAPE RECORD connection of your control amplifier. (This terminal may be turned on your control amplifier. Connect...
... IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. The equalizer can be used with the equalizer, connect the LEFT channel OUTPUT of the equalizer to the LEFT or "A" channel TAPE RECORD connection of your control amplifier. (This terminal may be turned on your control amplifier. Connect...
Owner's guide
Page 9
... TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE IN THE CIRCUIT. NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT COMPATIBLE WITH THE 901 SERIES I ." As you slide the LOW and HIGH FREQUENCY SOURCE AND ROOM COMPENSATION controls... the sound does not stop . j. I . The sound should stop , recheck Steps "a" through "I AND 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 test.) I TAPE RECORDER CONNECTIONS L A t A L R - THE FOLLOWING STEPS ...
... TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE IN THE CIRCUIT. NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT COMPATIBLE WITH THE 901 SERIES I ." As you slide the LOW and HIGH FREQUENCY SOURCE AND ROOM COMPENSATION controls... the sound does not stop . j. I . The sound should stop , recheck Steps "a" through "I AND 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 test.) I TAPE RECORDER CONNECTIONS L A t A L R - THE FOLLOWING STEPS ...
Owner's guide
Page 10
... BOSE Active Equalizer makes use with one or two tape recorders in the circuit; However, this may prove inconvenient if you are using conventional loudspeakers and headphones because the equalizer is permanently wired into the circuit. (See SECTION IV.) If you do connect the equalizer in... this manner, it is suggested that the gain controls of connection permanently connects the equalizer in the conventional manner. this method...
... BOSE Active Equalizer makes use with one or two tape recorders in the circuit; However, this may prove inconvenient if you are using conventional loudspeakers and headphones because the equalizer is permanently wired into the circuit. (See SECTION IV.) If you do connect the equalizer in... this manner, it is suggested that the gain controls of connection permanently connects the equalizer in the conventional manner. this method...
Owner's guide
Page 11
... 901 Series IV system, optimum performance is obtained when all four speaker systems are identical. Tape recorders are used in the NORMAL position. NUT R L MAIN-AMP IN a PRE-AMP OUT CONTROL AMPLIFIER Figure 6 4. If two pairs of speaker connections. Connect one equalizer for... your receiver and integrated amplifier owner's instruction manual for the BOSE equalizer. Phase reversal occurs when the 901 equalizer is usually accomplished by Bose 'to the receiver or amplifier in the channel powering the 901 speakers. For this reason, your control amplifier's speaker phasing ...
... 901 Series IV system, optimum performance is obtained when all four speaker systems are identical. Tape recorders are used in the NORMAL position. NUT R L MAIN-AMP IN a PRE-AMP OUT CONTROL AMPLIFIER Figure 6 4. If two pairs of speaker connections. Connect one equalizer for... your receiver and integrated amplifier owner's instruction manual for the BOSE equalizer. Phase reversal occurs when the 901 equalizer is usually accomplished by Bose 'to the receiver or amplifier in the channel powering the 901 speakers. For this reason, your control amplifier's speaker phasing ...
Owner's guide
Page 12
... 12 Similarly, connect the LEFT channel TAPE IN jack on the equalizer for the connection of the recorder. 5. Connect the RIGHT channel TAPE OUT jack on the 901 Active Equalizer in the MONITOR position (in). -7J 5 IV. Connecting Other Equipment A. NOTE: IF YOUR CONTROL AMPLIFIER HAS TWO... TAPE MONITOR CIRCUITS, BE CERTAIN TO CONNECT YOUR TAPE RECORDER TO THE BOSE ACTIVE EQUALIZER, NOT TO THE UNUSED TAPE MONITOR ON ...
... 12 Similarly, connect the LEFT channel TAPE IN jack on the equalizer for the connection of the recorder. 5. Connect the RIGHT channel TAPE OUT jack on the 901 Active Equalizer in the MONITOR position (in). -7J 5 IV. Connecting Other Equipment A. NOTE: IF YOUR CONTROL AMPLIFIER HAS TWO... TAPE MONITOR CIRCUITS, BE CERTAIN TO CONNECT YOUR TAPE RECORDER TO THE BOSE ACTIVE EQUALIZER, NOT TO THE UNUSED TAPE MONITOR ON ...
Owner's guide
Page 13
... 2. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE CIRCUIT. NOTE: Contact your control amplifier on your 901 equalizer in the monitor position (in the circuit, will sound unnatua with your high-fidelity system and... Recorder." 3. B. tAny speaker system other than the BOSE III or IV system. control amplifier in Steps 2 and 3 of the 90 speakers. CONNECTING HEADPHONES AND CONVENTIONAL SPEAKERS It is important to realize that the BOSE Active Equalizer it is required: 1. Your tape recorder will play ...
... 2. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE CIRCUIT. NOTE: Contact your control amplifier on your 901 equalizer in the monitor position (in the circuit, will sound unnatua with your high-fidelity system and... Recorder." 3. B. tAny speaker system other than the BOSE III or IV system. control amplifier in Steps 2 and 3 of the 90 speakers. CONNECTING HEADPHONES AND CONVENTIONAL SPEAKERS It is important to realize that the BOSE Active Equalizer it is required: 1. Your tape recorder will play ...
Owner's guide
Page 14
... high-frequency efficiency, and high-power handling capabili- The combination of new equalizer controls, improvements in sound reproduction, BOSE Corporation has carried out an extensive program examining the acoustic properties of a wide range of listening rooms. The development of the 901 Series IV loudspeaker is an important result of this new performance is a shelving function...
... high-frequency efficiency, and high-power handling capabili- The combination of new equalizer controls, improvements in sound reproduction, BOSE Corporation has carried out an extensive program examining the acoustic properties of a wide range of listening rooms. The development of the 901 Series IV loudspeaker is an important result of this new performance is a shelving function...
Owner's guide
Page 15
...can observe the effects of bass energy without affecting the mid-bass response. Many people choose the attractive pedestals available wit the 901 Series IV System. Select a recorded passage that has sustained music over the extremes of the range several seconds so you choose this method ...of these controls that it is important to provid. "Ii :011 ISL0UT 1 OW %ITER 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. Select a well-recorded familiar record with a full orchestral passage or a record with the control set at ...
...can observe the effects of bass energy without affecting the mid-bass response. Many people choose the attractive pedestals available wit the 901 Series IV System. Select a recorded passage that has sustained music over the extremes of the range several seconds so you choose this method ...of these controls that it is important to provid. "Ii :011 ISL0UT 1 OW %ITER 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. Select a well-recorded familiar record with a full orchestral passage or a record with the control set at ...
Owner's guide
Page 16
... excessive window glass, which also serve to operate with the center terminal found on your 901 IV Equalizer are especially helpful in your high-fidelity system. A lack of bass response frequently may...and care should be introduced by BOSE to eliminate echoes and standing waves. The overly bright sound of the cabinet. Living with your BOSE 901 Loudspeakers If you have placed the...of the room.• Turn the speakers upside down . The unique controls on the 901 Series Ill and IV Loud• speaker. A supporting chain should be directed downward by angling the rear of...
... excessive window glass, which also serve to operate with the center terminal found on your 901 IV Equalizer are especially helpful in your high-fidelity system. A lack of bass response frequently may...and care should be introduced by BOSE to eliminate echoes and standing waves. The overly bright sound of the cabinet. Living with your BOSE 901 Loudspeakers If you have placed the...of the room.• Turn the speakers upside down . The unique controls on the 901 Series Ill and IV Loud• speaker. A supporting chain should be directed downward by angling the rear of...
Owner's guide
Page 17
The system Is packed in series. Percentages of ±8 dB at 10 kHz. linear, high-excursion suspension; ENCLOSURE: Acoustic MatrixTM, utilizing three Reactive Air Columns tuned below 1 volt 5 ...maximum efficiency. 6. Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power restrictions on receiver or amplifier when equalizer is connected in non-commercial applications, providing the fusing recommendations are followed. 5. SPEAKER COMPLEMENT: Nine matched full-range speakers, utilizing aluminum helically wound ...
The system Is packed in series. Percentages of ±8 dB at 10 kHz. linear, high-excursion suspension; ENCLOSURE: Acoustic MatrixTM, utilizing three Reactive Air Columns tuned below 1 volt 5 ...maximum efficiency. 6. Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power restrictions on receiver or amplifier when equalizer is connected in non-commercial applications, providing the fusing recommendations are followed. 5. SPEAKER COMPLEMENT: Nine matched full-range speakers, utilizing aluminum helically wound ...
Owner's guide
Page 18
...generally require no voltage conversion.) C. If you are defective, and if so. If the trouble still persists, contact your 901s are probably overloading the amplifier. If one power line voltage only. Instead, disconnect the wire of the speaker suspected of...may damage the speaker operating correctly. Equalizers manufactured for 240 VAC operation may be determined by factory modification. Equalizers manufactured for 120 VAC operation are not defective. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is designed to operate on one ...
...generally require no voltage conversion.) C. If you are defective, and if so. If the trouble still persists, contact your 901s are probably overloading the amplifier. If one power line voltage only. Instead, disconnect the wire of the speaker suspected of...may damage the speaker operating correctly. Equalizers manufactured for 240 VAC operation may be determined by factory modification. Equalizers manufactured for 120 VAC operation are not defective. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is designed to operate on one ...