Owner's guide
Page 2
... I. Introduction 3 II. Placing the Speakers B. Tape Recorders B. Source and Room Compensation Controls B. Care and Maintenance VII. Using 1-cur-Chanre IV. Adjusting the Source and Room Compensation Controls C. Warranty 19 r..; '978 DOSE Ccrpo•aticn. Connecting Other Equipment 12 A. Connecting the Equalizer 1. Unpacking Instructions 3 III. Living with your BOSE 901 Speakers 14 A. Using the Tape Monitor...
... I. Introduction 3 II. Placing the Speakers B. Tape Recorders B. Source and Room Compensation Controls B. Care and Maintenance VII. Using 1-cur-Chanre IV. Adjusting the Source and Room Compensation Controls C. Warranty 19 r..; '978 DOSE Ccrpo•aticn. Connecting Other Equipment 12 A. Connecting the Equalizer 1. Unpacking Instructions 3 III. Living with your BOSE 901 Speakers 14 A. Using the Tape Monitor...
Owner's guide
Page 3
... home. Unpack both cartons carefully. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Repack the speaker(s) in operation. I. The listening enjoyment you will experience is packed in the carton filler material along with the "Part 1" speaker. The detailed installation and placement instructions found in two cartons marked "Part 1" and...
... home. Unpack both cartons carefully. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Repack the speaker(s) in operation. I. The listening enjoyment you will experience is packed in the carton filler material along with the "Part 1" speaker. The detailed installation and placement instructions found in two cartons marked "Part 1" and...
Owner's guide
Page 4
...the rear face of the larger environments associated with the speakers placed between 12' and 24' from the reflecting wall. 2. Installation consists of the speaker. 4. PLACING THE SPEAKERS Unlike conventional speakers, the 901 Series IV functions with the acoustics of placement and produces an ... 901 Series IV speaker system consists of the speaker toward the reflecting wall (the wall behind the speaker). The basic idea is to provide space to allow you have not decided where to place your speakers and would like more information, SECTION V (LIVING WITH YOUR BOSE 901 SPEAKERS)...
...the rear face of the larger environments associated with the speakers placed between 12' and 24' from the reflecting wall. 2. Installation consists of the speaker. 4. PLACING THE SPEAKERS Unlike conventional speakers, the 901 Series IV functions with the acoustics of placement and produces an ... 901 Series IV speaker system consists of the speaker toward the reflecting wall (the wall behind the speaker). The basic idea is to provide space to allow you have not decided where to place your speakers and would like more information, SECTION V (LIVING WITH YOUR BOSE 901 SPEAKERS)...
Owner's guide
Page 6
...on the left channel amplifier output. (When connecting the 901 Series IV loudspeakers to your amplifier, if there is a choice of your room facing the speaker system. Place it on the basis of a maximum audible cdorahon of BOSE 901 loudspeakers. d. " to the terminal marked "com," "...one conductor from the other), connect the "Part 1" speaker terminal marked " - Contact your 901s in this manner. " terminals on the amplifier output, use with conventional amplifying equipment. Start with two pairs of 901 Series IV loudspeakers are being connected, the terminal marked "4" or ...
...on the left channel amplifier output. (When connecting the 901 Series IV loudspeakers to your amplifier, if there is a choice of your room facing the speaker system. Place it on the basis of a maximum audible cdorahon of BOSE 901 loudspeakers. d. " to the terminal marked "com," "...one conductor from the other), connect the "Part 1" speaker terminal marked " - Contact your 901s in this manner. " terminals on the amplifier output, use with conventional amplifying equipment. Start with two pairs of 901 Series IV loudspeakers are being connected, the terminal marked "4" or ...
Owner's guide
Page 7
...3ampere, fast-acting Buss AGC Series or Littelfuse AG Series. If you are using an amplifier rated at under 100 watts rms per channel, fuse your speaker. Fusing Any loudspeaker is required. BOSE Corporation recommends use of serious damage to the speaker connection diagram, the fuseholders should... wire connecting each speaker will minimize the possibility of a fast-acting fuse in series with the positive wire going to each speaker, placing the fuse in SECTION 3. 3. Be sure to damage if the amplifier powering it should be obtained from BOSE Customer Service Department ...
...3ampere, fast-acting Buss AGC Series or Littelfuse AG Series. If you are using an amplifier rated at under 100 watts rms per channel, fuse your speaker. Fusing Any loudspeaker is required. BOSE Corporation recommends use of serious damage to the speaker connection diagram, the fuseholders should... wire connecting each speaker will minimize the possibility of a fast-acting fuse in series with the positive wire going to each speaker, placing the fuse in SECTION 3. 3. Be sure to damage if the amplifier powering it should be obtained from BOSE Customer Service Department ...
Owner's guide
Page 8
...due to the following instructions: a. Using The Tape Monitor Circuit The connection methods described in this is important because conventional speakers and headphones should realize that the equalizer will tell you should not be labeled TAPE OUT or REC OUT.) f. Connect... IV.) Also, optimum system noise performance is obtained when connecting the equalizer in SECTION IV will automatically be used with the power switch of a tape recorder. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER ...
...due to the following instructions: a. Using The Tape Monitor Circuit The connection methods described in this is important because conventional speakers and headphones should realize that the equalizer will tell you should not be labeled TAPE OUT or REC OUT.) f. Connect... IV.) Also, optimum system noise performance is obtained when connecting the equalizer in SECTION IV will automatically be used with the power switch of a tape recorder. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER ...
Owner's guide
Page 9
... TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE IN THE CIRCUIT. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 Play the entire system as it is plugged into the system. n. As you slide the LOW and HIGH FREQUENCY...
... TAPE MONITOR OF YOUR CONTROL AMPLIFIER MUST BE LEFT "ON" FOR THE ACTIVE EQUALIZER TO BE IN THE CIRCUIT. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 Play the entire system as it is plugged into the system. n. As you slide the LOW and HIGH FREQUENCY...
Owner's guide
Page 10
... of this connection method involves using conventional loudspeakers and headphones because the equalizer is permanently wired into the circuit. (See SECTION IV.) If you are using conventional speakers or headphones. (See SECTION IV.) Due to the connection of some receivers, the equalizer may prove inconvenient if you do connect the equalizer in this...
... of this connection method involves using conventional loudspeakers and headphones because the equalizer is permanently wired into the circuit. (See SECTION IV.) If you are using conventional speakers or headphones. (See SECTION IV.) Due to the connection of some receivers, the equalizer may prove inconvenient if you do connect the equalizer in this...
Owner's guide
Page 11
Tape recorders are now connected to the spatial and spectral properties of the 901 Series IV system, optimum performance is obtained when all four speaker systems are used , we suggest using conventional speakers with the 901s, connect the equalizer in the conventional manner. 7EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS ... quadraphonic operation. 11 For this manual before proceeding. In most cases, this will require the reversal of one for the BOSE equalizer. NUT R L MAIN-AMP IN a PRE-AMP OUT CONTROL AMPLIFIER Figure 6 4. Using Four-Channel Equipment Most ...
Tape recorders are now connected to the spatial and spectral properties of the 901 Series IV system, optimum performance is obtained when all four speaker systems are used , we suggest using conventional speakers with the 901s, connect the equalizer in the conventional manner. 7EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS ... quadraphonic operation. 11 For this manual before proceeding. In most cases, this will require the reversal of one for the BOSE equalizer. NUT R L MAIN-AMP IN a PRE-AMP OUT CONTROL AMPLIFIER Figure 6 4. Using Four-Channel Equipment Most ...
Owner's guide
Page 13
...your tape recorder without the equalizer. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE CIRCUIT. tAny speaker system other than the BOSE III or IV system. NOTE: Contact your high-fidelity system and will sound unnatua... with conventional speakers and headphones, place the TAPE MONITOR 2 switch of the 90 speakers. To play your 901 equalizer in the monitor position (...
...your tape recorder without the equalizer. MORE IMPORTANTLY, HEADPHONES AND CONVENTIONAL SPEAKERS MAY ACTUALLY BE DAMAGED IF PLAYED WITI THE ACTIVE EQUALIZER IN THE CIRCUIT. tAny speaker system other than the BOSE III or IV system. NOTE: Contact your high-fidelity system and will sound unnatua... with conventional speakers and headphones, place the TAPE MONITOR 2 switch of the 90 speakers. To play your 901 equalizer in the monitor position (...
Owner's guide
Page 14
..., 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 10-15 kHz. The combination of room characteristics, musical sources, and speaker placement... point that are no restrictions on speaker performance with respect to location in achieving this control allows the speaker system to compensate for the specific effects of the amplifier used with the 901 Series IV. ties make the 901 Series IV speaker system unusually flexible with a new ...
..., 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 10-15 kHz. The combination of room characteristics, musical sources, and speaker placement... point that are no restrictions on speaker performance with respect to location in achieving this control allows the speaker system to compensate for the specific effects of the amplifier used with the 901 Series IV. ties make the 901 Series IV speaker system unusually flexible with a new ...
Owner's guide
Page 15
...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. Select a recorded passage that span the entire frequency range. SPEAKER PLACEMENT Several options are possible regarding placement of suppor instructions are interrupted ... useful in your turntable, as possibl. the necessary distances behind and to its effect. LOW 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.
...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. Select a recorded passage that span the entire frequency range. SPEAKER PLACEMENT Several options are possible regarding placement of suppor instructions are interrupted ... useful in your turntable, as possibl. the necessary distances behind and to its effect. LOW 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.
Owner's guide
Page 16
... the cabinet, and a third pilot hole located near the "V" of acoustically "live" rooms (e.g.. The unique controls on the 901 Series Ill and IV Loud• speaker. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be improved by the addition of rugs and heavy drapery...
... the cabinet, and a third pilot hole located near the "V" of acoustically "live" rooms (e.g.. The unique controls on the 901 Series Ill and IV Loud• speaker. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be improved by the addition of rugs and heavy drapery...
Owner's guide
Page 17
...the proper angles of the reflected sound incident upon the listener. Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power ...speakers, utilizing aluminum helically wound voice coils; Dimensions: Input impedance: Harmonic distortion: Noise ("A" weighted): Minimum load impedance: Maximum output voltage: Maximum gain: 2%," High x 5X1° Deep x 11%" Wide 80 kilohms < 0.1% (1.0-volt output) 90 dB below system resonance and partially isolated individual cells for maximum efficiency. 6. The system Is packed in series...
...the proper angles of the reflected sound incident upon the listener. Speaker Configuration SPATIAL CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power ...speakers, utilizing aluminum helically wound voice coils; Dimensions: Input impedance: Harmonic distortion: Noise ("A" weighted): Minimum load impedance: Maximum output voltage: Maximum gain: 2%," High x 5X1° Deep x 11%" Wide 80 kilohms < 0.1% (1.0-volt output) 90 dB below system resonance and partially isolated individual cells for maximum efficiency. 6. The system Is packed in series...
Owner's guide
Page 18
...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. If bass and high frequencies seem weak, check to determine whether your 901s are made with your 901 system, it is worth a few ... or push the Low Filter switch "In," you suspect that the cables are probably overloading the amplifier. CARE AND MAINTENANCE Your 901 speaker cabinets and equalizer are defective, and if so. Equalizers manufactured for proper operation. Any good grade of furniture polish used for ...
...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. If bass and high frequencies seem weak, check to determine whether your 901s are made with your 901 system, it is worth a few ... or push the Low Filter switch "In," you suspect that the cables are probably overloading the amplifier. CARE AND MAINTENANCE Your 901 speaker cabinets and equalizer are defective, and if so. Equalizers manufactured for proper operation. Any good grade of furniture polish used for ...