Bose 901 Series IV Owner's guide

Bose 901 Series IV Manual

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  • Bose 901 Series IV | Owner's guide - Page 1
    VVOrrie.°. YF at E CO a) w ›.% cc VJ 1 05 Q. rn a a) cC V. I it 1\k, f sw g.2 Owner's Manual ,e1
  • Bose 901 Series IV | Owner's guide - Page 2
    Instructions 3 III. Installation 4 A. Placing the Speakers B. Connecting the Speakers 1. Wire Selection 2. PhasirgINHng 3. Fusing C. Connecting the Equalizer IV. Connecting Other Equipment 12 A. Tape Recorders B. Headphones and Conventional Speakers V. Living with your BOSE 901 Speakers 14
  • Bose 901 Series IV | Owner's guide - Page 3
    The BOSE 901 Series IV, with its high proportion of reflected sound, nine full-range drivers, and a newly-designed electronic active equalizer, is installed, connected, and operated differently than conventional loudspeakers. The detailed installation and placement instructions found in this manual
  • Bose 901 Series IV | Owner's guide - Page 4
    . Installation Your 901 Series IV speaker system consists of three parts: two speakers (marked "Part 1" and "Part 2") and an electronic Active Equalizer packed in the "Part 1" container. Installation consists of three steps: 1)placing your speakers for best sound, 2) connecting the speaker to your
  • Bose 901 Series IV | Owner's guide - Page 5
  • Bose 901 Series IV | Owner's guide - Page 6
    output, use the terminal marked "8" or "8 ohms." If two pairs of 901 Series IV loudspeakers are being connected, the terminal marked "4" or "4 ohms" on the receiver or amplifier should be used.)11- e. Connect the " + " terminal on the left speaker to the terminal marked "pos," "positive," or
  • Bose 901 Series IV | Owner's guide - Page 7
    wire connecting each speaker. Be sure to place the fuse in an easily accessible location. BOSE Corporation recommends use of a 3ampere, fast-acting Buss AGC Series or Littelfuse AG Series. A fuse kit containing fuses and holders can be obtained from BOSE Customer Service Department for $5.00
  • Bose 901 Series IV | Owner's guide - Page 8
    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 The Tape Monitor Circuit The connection methods described in this section can be used with virtually all integrated amplifers,
  • Bose 901 Series IV | Owner's guide - Page 9
    ACTIVE EQUALIZER TO BE IN THE CIRCUIT. CHECK THE TAPE MONITOR SWITCH PERIODICALLY TO MAKE CERTAIN IT IS IN THE "ON" POSITION. NOTE 2: THE 901 SERIES IV AND III EQUALIZERS ARE NOT COMPATIBLE WITH THE 901 SERIES I AND II SPEAKER SYSTEMS. HOWEVER, THE 901 SERIES IV EQUALIZER IS COMPATIBLE WITH THE 901
  • Bose 901 Series IV | Owner's guide - Page 10
    power amplifier be reduced slightly from fully clockwise for optimum system noise (consult your amplifier owner's manual for further recommendations). 3. Using the Preamp•Out/Main-ln Circuit An alternate method of connecting the BOSE Active Equalizer makes use of the PREAMP-OUT and MAIN-IN jacks
  • Bose 901 Series IV | Owner's guide - Page 11
    separate components, connect the equalizer after the output of the decoder. We suggest reading the related sections of this manual before proceeding. Also, be certain to recheck your speaker phasing. Note: Due to the spatial and spectral properties of the 901 Series IV system, optimum performance is
  • Bose 901 Series IV | Owner's guide - Page 12
    CIRCUITS, BE CERTAIN TO CONNECT YOUR TAPE RECORDER TO THE BOSE ACTIVE EQUALIZER, NOT TO THE UNUSED TAPE MONITOR ON YOUR RECEIVER. Installation place the TAPE switch on the 901 Active Equalizer in the MONITOR position (in). t9..; YS EQUALIZER AMPLIFIER CONNECTIONS TAPE RECORDER CONNECTIONS L
  • Bose 901 Series IV | Owner's guide - Page 13
    amplifier on. Your tape recorder will then be connected directly to your high-fidelity system and will play without the equalizer. B. CONNECTING HEADPHONES AND CONVENTIONAL SPEAKERS It is important to realize that the BOSE Active Equalizer it troduces substantial boost in the range below 100 Hz
  • Bose 901 Series IV | Owner's guide - Page 14
    . The new 901 Series IV equalizer addresses this dilemma with two new controls called Source and Room Compensation Controls. Certain portions of the midbass of any speaker system will tend to vary dramatically as a function of listening room acoustics. BOSE has addressed this problem with the LOW
  • Bose 901 Series IV | Owner's guide - Page 15
    in the speakers optimum performance. LOW FILTER CONTROL The 901 Active Equalizer features a newly 901 Series IV System. If you choose this method of suppor instructions are provided with the pedestals for connectin and mounting the speaker system, using the four predrille holes (A) in the speaker
  • Bose 901 Series IV | Owner's guide - Page 16
    placement is intentional and is necessary when using electronics products to be introduced by BOSE to operate with the center terminal found 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 the cabinet
  • Bose 901 Series IV | Owner's guide - Page 17
    in series. ENCLOSURE: Acoustic MatrixTM, utilizing three Reactive Air Columns tuned below system resonance and partially isolated individual cells for each driver; air columns emerge through rear of speaker cabinet for maximum efficiency. 6. The Active Equalizer TAPE MONITOR SWITCH: Replaces tape
  • Bose 901 Series IV | Owner's guide - Page 18
    by factory modification. Equalizers manufactured for 240 VAC operation may be converted to 120 VAC operation by BOSE Authorized Factory Service Agencies. (The speakers require no voltage conversion.) C. IN CASE OF DIFFICULTY If you suspect that there is a problem with your 901 system, it is worth
  • Bose 901 Series IV | Owner's guide - Page 19
    . Should this unit fail within the warranty period, you should contact your nearest BOSE dealer for service instructions. The dealer may ask you to return the unit together with proof of purchase to him, or direct you to return the unit together with proof of purchase to the nearest authorized
  • Bose 901 Series IV | Owner's guide - Page 20
    ____71751E7 THE MOUNTAIN • FRAMINGHAM, MASS. 01701 Printed in U.S.A. 111432
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