Manual for 1800-VI

Manual for 1800-VI

Brand: Bose

Category: Electronics

Document Type: Manual

Language: EN

Available Languages: EN , ES

Uploaded: April 20, 2026, 7:42 p.m.

Warranty Information

The Bose Model 1800-VI and 1600-VI Professional Stereo Power Amplifier comes with a five-year, transferable, limited warranty.

Powering On and Initial Setup:

  • Verify all switches (stereo/mono, clipping eliminator, EQ Bi-Amp/Full Range, level defeat) are set correctly.
  • Turn down amplifier controls before powering up.
  • Advance controls slowly to verify correct operation.
  • Set input level controls high enough for full amplifier output.
  • Mark settings for reference.
  • For bi-amplified systems, start with low frequency amps down or off.

Input Modules:

  • Standard input module with EQ card slots for Bose loudspeakers (402®, 502®A, 502B, 802®).
  • ACM-1 module for network control and monitoring.

Front Panel Features:

  • Power switch (ON/STANDBY or POWER/SEQUENCE).
  • Standby LED.
  • AC power fuse.
  • Level controls for each channel.
  • Status indicators (ON, SIGNAL, PEAK/PROTECT).
  • Data receive indicator (for ACM-1).

Rear Panel Features:

  • Stereo/mono switch.
  • Clipping eliminator switch.
  • Input connectors (1/4" TRS, XLR, quick connect).
  • EQ OUT connectors.
  • Equalizer LEDs.
  • EQ Bi-Amp/Full Range switch.
  • Level defeat switch.
  • Sequencer connector.
  • Speaker outputs.
  • Power cord.

Troubleshooting and error codes

Problem What to do
No sound, no power (Usually an indication of a power supply problem, either in the power line itself or the amplifier's power supply.)
  • Amplifier power off. Turn on.
  • Linecord disconnected.
  • Poor fit between the plug and AC receptacle. Try another receptacle.
  • Power off at AC receptacle. Check with tester or lamp.
  • Blown amplifier fuse. Replace fuse.
  • Open thermal breaker in the power transformer. Allow amplifier to cool and the breaker will reset itself.
Power on, low output or no output (Usually signal-source, bad cable or partial output short circuit related.)
  • Input level controls set too low. Reset.
  • Check to see if problem is at the source. Move the input connections to another amplifier you know is working.
  • Be sure that there are no small strands of wire touching similar strands coming from the other wire in the cable.
  • Make sure the speakers are functioning correctly.
  • If you are using bridged-mono mode, make sure the stereo/mono switch is set correctly.
  • Use a voltmeter to determine if the power line voltage is dropping excessively when the amplifier is driven hard.
Playback mixed with hum
  • Check or replace the connecting cables.
  • Make sure that each screw terminal connection is tight.
  • Signal cables may have been routed too closely to AC cables, power transformers, motors or other EMI inducing device.
  • Connect another source to the power amplifier inputs. If the hum stops, the problem lies with the original source component.
Distortion (Usually caused by excessive loss in the input controls when the mixer/equalizer/crossover does not produce enough output. Also caused by over-driving that results in output clipping, or current limiting caused by excessively low load impedances.)
  • Check input level controls. If set too low, the preceding piece of equipment may not have sufficient output to overcome the loss.
  • Check speaker connections and verify that all screw connections are tight and that there are no stray strands of wire to cause short circuits.
  • Verify that the total load impedance presented to the amplifier is within the limits described in this manual for the mode of operation selected.
Unnatural sound (Some parts of the frequency band do not sound balanced with the rest of the band.)
  • Check the EQ cards. Verify that the EQ card corresponds to the model speaker being used and that the EQ card is installed in the proper channel. Verify that the speakers are connected to the same channel that the corresponding EQ card is installed in.
Care
  • Wipe the front panel and chassis with a soft, dry cloth.
  • For stubborn spots, use a mild dish soap or detergent sparingly applied to a soft cloth.
  • Don't use alcohol, ammonia, or other strong solvents.
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