Owner's guide
Page 2
... 4 A. Connecting the Speakers 1. PhasirgINHng 3. Using the Tape Monitor Circuit 2. Headphones and Conventional Speakers V. Living with your BOSE 901 Speakers 14 A. In Case of Contents I. Using 1-cur-Chanre IV. Source and Room Compensation Controls B. Specifications B. Introduction 3 II. Unpacking Instructions 3 III. Placing the Speakers B. Using the... 19 r..; '978 DOSE Ccrpo•aticn. Voltage Conversion C. Care and Maintenance VII. Fusing C. Connecting the Equalizer 1. Connecting Other Equipment 12 A. Tape Recorders B. Speaker Placement D.
... 4 A. Connecting the Speakers 1. PhasirgINHng 3. Using the Tape Monitor Circuit 2. Headphones and Conventional Speakers V. Living with your BOSE 901 Speakers 14 A. In Case of Contents I. Using 1-cur-Chanre IV. Source and Room Compensation Controls B. Specifications B. Introduction 3 II. Unpacking Instructions 3 III. Placing the Speakers B. Using the... 19 r..; '978 DOSE Ccrpo•aticn. Voltage Conversion C. Care and Maintenance VII. Fusing C. Connecting the Equalizer 1. Connecting Other Equipment 12 A. Tape Recorders B. Speaker Placement D.
Owner's guide
Page 3
Unpack both cartons carefully. The BOSE 901 Series IV, with the "Part 1" speaker. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Introduction Thank you for possible use later. The listening enjoyment you will experience ...home. II. The active equalizer is packed in operation. Repack the speaker(s) in this manual are important. With proper installation, you will be rewarded with the complete packing material and notify your 901 speakers. I. Unpacking Instructions The 901 Series IV speaker system is found ...
Unpack both cartons carefully. The BOSE 901 Series IV, with the "Part 1" speaker. Save the cartons and packing material for purchasing the BOSE 901 Series IV DirecUReflectinge speaker system. Introduction Thank you for possible use later. The listening enjoyment you will experience ...home. II. The active equalizer is packed in operation. Repack the speaker(s) in this manual are important. With proper installation, you will be rewarded with the complete packing material and notify your 901 speakers. I. Unpacking Instructions The 901 Series IV speaker system is found ...
Owner's guide
Page 4
...excellent results in most rooms. If you place the speakers within the ranges suggested here, the unique adjustments found on the 901 Series IV equalizer will allow the sound to 5'.) Large objects (such as 15' will be between 12" to the ceiling or floor ... 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). Installation consists of three steps...
...excellent results in most rooms. If you place the speakers within the ranges suggested here, the unique adjustments found on the 901 Series IV equalizer will allow the sound to 5'.) Large objects (such as 15' will be between 12" to the ceiling or floor ... 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). Installation consists of three steps...
Owner's guide
Page 6
... lengths showninTable I were calculated on the left speaker to the first pair of impedances on the amplifier output, use with two pairs of BOSE 901 loudspeakers. d. itNote: When operating your amplifier, if there is marked to speaker connection. CONNECTING THE SPEAKERS 1. If two pairs of ... connecting the 901 Series IV loudspeakers to the terminal marked "com," "negative," or "minus" on the left side of the speaker. Contact your equipment. Place it on the bottom of your receiver or amplifier is not capable of 4-ohm Operation with one equalizer is intended ...
... lengths showninTable I were calculated on the left speaker to the first pair of impedances on the amplifier output, use with two pairs of BOSE 901 loudspeakers. d. itNote: When operating your amplifier, if there is marked to speaker connection. CONNECTING THE SPEAKERS 1. If two pairs of ... connecting the 901 Series IV loudspeakers to the terminal marked "com," "negative," or "minus" on the left side of the speaker. Contact your equipment. Place it on the bottom of your receiver or amplifier is not capable of 4-ohm Operation with one equalizer is intended ...
Owner's guide
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... Circuit The connection methods described in this section can be used with the Active Equalizer. (See SECTION IV.) Also, optimum system noise performance is obtained when connecting the equalizer in SECTION IV will automatically be used with virtually all power to the LEFT or "A" channel ...tape recorder. Plug the ac power cord of amplifying equipment. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. The equalizer can be turned on or off the tape monitor switch on your ...
... Circuit The connection methods described in this section can be used with the Active Equalizer. (See SECTION IV.) Also, optimum system noise performance is obtained when connecting the equalizer in SECTION IV will automatically be used with virtually all power to the LEFT or "A" channel ...tape recorder. Plug the ac power cord of amplifying equipment. CONNECTING THE EQUALIZER IT IS MOST IMPORTANT THAT YOU FOLLOW THESE INSTRUCTIONS FOR OPTIMUM PERFORMANCE OF YOUR 901 SERIES IV SPEAKER SYSTEM. 1. The equalizer can be turned on or off the tape monitor switch on your ...
Owner's guide
Page 9
... the MONITOR or ON position. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 OOi MON REG R L A L TAPE CONTROL AMPLIFIER Figvia 4 k. m. If the sound does not stop . 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 - i. With the system now playing, turn the...
... the MONITOR or ON position. I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901 SERIES III SPEAKER SYSTEM. 9 OOi MON REG R L A L TAPE CONTROL AMPLIFIER Figvia 4 k. m. If the sound does not stop . 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 - i. With the system now playing, turn the...
Owner's guide
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... input. The disadvantage of this connection method involves using conventional speakers or headphones. (See SECTION IV.) Due to the circuitry characteristics of connection permanently connects the equalizer in the conventional manner. Using the PREAMP-OUT/ MAIN-1N connection jacks retains the total flexibility...tape monitor functions for further recommendations). 3. 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; Also, system noise may not function if connected to the...
... input. The disadvantage of this connection method involves using conventional speakers or headphones. (See SECTION IV.) Due to the circuitry characteristics of connection permanently connects the equalizer in the conventional manner. Using the PREAMP-OUT/ MAIN-1N connection jacks retains the total flexibility...tape monitor functions for further recommendations). 3. 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; Also, system noise may not function if connected to the...
Owner's guide
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...and one pair of speaker connections. Also, be repeated when using speakers having similar spatial characteristics, such as the Bose Direct/Reflectinge 601 or Model 501 speaker systems. These speaker systems have four-channel tape monitor or preamp out/main ...the PREAMP- With this method of the 901 Series IV system, optimum performance is connected in the conventional manner. 7EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS R L R R I •- Tape recorders are required. If conventional speakers are used , two active equalizers are now connected to the spatial and ...
...and one pair of speaker connections. Also, be repeated when using speakers having similar spatial characteristics, such as the Bose Direct/Reflectinge 601 or Model 501 speaker systems. These speaker systems have four-channel tape monitor or preamp out/main ...the PREAMP- With this method of the 901 Series IV system, optimum performance is connected in the conventional manner. 7EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS R L R R I •- Tape recorders are required. If conventional speakers are used , two active equalizers are now connected to the spatial and ...
Owner's guide
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... RIGHT channel TAPE OUT jack on the equalizer to the RIGHT or "B" channel INPUT (or LINE ... BOSE ACTIVE EQUALIZER, NOT TO THE UNUSED TAPE MONITOR...equalizer to the LEFT or "A" channel OUTPUT jack of the recorder. 5. To play the tape recorder, simply place the TAPE switch on the equalizer... to FIGURE 7 and follow the next five steps carefully. 1. TAPE RECORDERS Since the Active Equalizer... provided on the equalizer for the connection ...901 Active Equalizer in the MONITOR position (in). YS EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS L 0 0 0 0 NiPl1- -...
... RIGHT channel TAPE OUT jack on the equalizer to the RIGHT or "B" channel INPUT (or LINE ... BOSE ACTIVE EQUALIZER, NOT TO THE UNUSED TAPE MONITOR...equalizer to the LEFT or "A" channel OUTPUT jack of the recorder. 5. To play the tape recorder, simply place the TAPE switch on the equalizer... to FIGURE 7 and follow the next five steps carefully. 1. TAPE RECORDERS Since the Active Equalizer... provided on the equalizer for the connection ...901 Active Equalizer in the MONITOR position (in). YS EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS L 0 0 0 0 NiPl1- -...
Owner's guide
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...and any further connection advice. 1: To play your tape recorder without the equalizer. tAny speaker system other than the BOSE III or IV system. Consequently, conventional speakers or headphone: if played with the equalizer in the range below 100 Hz an above 5,000 Hz to realize ... NOTE: Contact your control amplifier. 4. Connect "Y" connectors to your high-fidelity system and will sound unnatua with your 901s, place the tape monitor of your 901 equalizer in the monitor position (in Steps 2 and 3 of each channel "Y" connector. Your tape recorder will then be connected...
...and any further connection advice. 1: To play your tape recorder without the equalizer. tAny speaker system other than the BOSE III or IV system. Consequently, conventional speakers or headphone: if played with the equalizer in the range below 100 Hz an above 5,000 Hz to realize ... NOTE: Contact your control amplifier. 4. Connect "Y" connectors to your high-fidelity system and will sound unnatua with your 901s, place the tape monitor of your 901 equalizer in the monitor position (in Steps 2 and 3 of each channel "Y" connector. Your tape recorder will then be connected...
Owner's guide
Page 14
... the upper treble and midrange. SOURCE AND ROOM COMPENSATION CONTROLS The 901 Series IV Active Equalizer Controls have also made possible further 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 a shelving function that are followed.
... the upper treble and midrange. SOURCE AND ROOM COMPENSATION CONTROLS The 901 Series IV Active Equalizer Controls have also made possible further 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 a shelving function that are followed.
Owner's guide
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...sound without changing the deep bass or midrange. "Ii :011 ISL0UT 1 OW %ITER 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. the necessary distances behind and to realize that it will notice a dramatic change in the speakers optimum... floor placement is rich and full, but without affecting the mid-bass response. Many people choose the attractive pedestals available wit the 901 Series IV System. acoustic feedback can be used to suspend the speaker syster from the ceiling (see Figure 1). This placement method i particularly ...
...sound without changing the deep bass or midrange. "Ii :011 ISL0UT 1 OW %ITER 315 1.00O 1001 FREQUENCY IN CYCLES PER SECOND 901 IV EQUALIZER CONTROL RESPONSE 10.000 20110 C. the necessary distances behind and to realize that it will notice a dramatic change in the speakers optimum... floor placement is rich and full, but without affecting the mid-bass response. Many people choose the attractive pedestals available wit the 901 Series IV System. acoustic feedback can be used to suspend the speaker syster from the ceiling (see Figure 1). This placement method i particularly ...
Owner's guide
Page 16
...hard walls) can be improved by angling the rear of the speaker down and place them into the listening room. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be directed downward by the addition of ...901 Series Ill and IV Loud• speaker. This is supplied with wall-to a structural support, such as the size, shape, construction, and furnishings) play an important part in the quality of the room (such as a beam or joist. ROOM ACOUSTICS The acoustical properties of sound produced by your 901 IV Equalizer...
...hard walls) can be improved by angling the rear of the speaker down and place them into the listening room. Living with your BOSE 901 Loudspeakers If you have placed the speakers quite high in your listening room, the sound can be directed downward by the addition of ...901 Series Ill and IV Loud• speaker. This is supplied with wall-to a structural support, such as the size, shape, construction, and furnishings) play an important part in the quality of the room (such as a beam or joist. ROOM ACOUSTICS The acoustical properties of sound produced by your 901 IV Equalizer...
Owner's guide
Page 17
...CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power restrictions on receiver or amplifier when equalizer is connected in series. one speaker directed into the listening area to provide the optimum ratio of reflected to 400 Hz. SPEAKER COMPLEMENT... lbs. Impedance: 8 ohms 3. linear, high-excursion suspension; low impedance (0.9 ohms) voice coils connected in tape monitor circuit. The Active Equalizer TAPE MONITOR SWITCH: Replaces tape monitor switch on amplifier size when used in two cartons marked "Part 1" and "Part 2." HIGH FREQUENCY CONTROL...
...CHARACTERISTICS: Eight speakers reflecting sound at 8 ohms. Maximum Recommended Power: No power restrictions on receiver or amplifier when equalizer is connected in series. one speaker directed into the listening area to provide the optimum ratio of reflected to 400 Hz. SPEAKER COMPLEMENT... lbs. Impedance: 8 ohms 3. linear, high-excursion suspension; low impedance (0.9 ohms) voice coils connected in tape monitor circuit. The Active Equalizer TAPE MONITOR SWITCH: Replaces tape monitor switch on amplifier size when used in two cartons marked "Part 1" and "Part 2." HIGH FREQUENCY CONTROL...
Owner's guide
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... OF DIFFICULTY If you suspect that the cables are not defective. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is worth a few minutes of your time to determine whether your 901s are defective, and if so. Any good grade of furniture polish used for wood finishes can generally be used in...
... OF DIFFICULTY If you suspect that the cables are not defective. Technical Information B. 110.220 VAC VOLTAGE CONVERSION The BOSE Series IV Equalizer is worth a few minutes of your time to determine whether your 901s are defective, and if so. Any good grade of furniture polish used for wood finishes can generally be used in...