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The Daily Insight

How do you hook up a Bose 901 equalizer?

Author

William Smith

Published Mar 17, 2026

How do you hook up a Bose 901 equalizer?

Connect the amplifier INPUT of the Bose® 901® active equalizer to the PRE AMP OUT jacks of the receiver or amplifier. Connect right channel to right channel and left to left. 4. Connect the amplifier OUTPUT of the active equalizer to the MAIN AMP IN jacks on the receiver or amplifier.

Do you need an equalizer for a Bose 901 speaker?

CAUTION: You must have a Bose 901 active equalizer for a complete 901 speaker system. The use of 901 Series VI speakers without the 901 Series VI active equalizer will result in improper per- formance. The use of graphic or parametric equalizers, instead of the Bose 901 equalizer, will result in unsatisfactory performance.

Where does the sound come from on a Bose 901?

There’s no crossovers or other passive components inside – just a bunch of individual speakers wired together to give the right impedance. About 11% of the sound is radiated from the single front-mounted speaker, and the remaining 89% of the sound is radiated from the back.

What’s the range of the 901 active equalizer?

You’d have a range of +/- 24 dB in each band which would cover the full range of the 901 Active Equalizer. On the extremes, you’d have both equalizers gained up; in the middle, you’d only have the first gained up slightly and the second left flat.

Can you use a Kenwood equalizer in place of a Bose?

Thanks for writing, Jim! Can you use that Kenwood graphic equalizer in place of the bose? Short answer: It’s not recommended. Bose used a really interesting design concept for their 901 speakers. Each contains a set of nine, 4 1/2″ full range drivers wired in series-parallel.

Can a Bose 901 equalizer be used with a 901 Series V speaker?

Bose 901 Series VI equalizers can only be used with 901 Series V and VI speakers. The 901 Series VI active equalizer must not be used with 901 Series I, II, III or IV speakers.

Where are the input jacks on a Bose equalizer?

Connect one end of the first set of twin cables that came with the equalizer to the “Amplifier Input” jacks on the Bose 901 equalizer, connecting the red side to the “R” input and the other to the “L” input. All jacks are located on the back of the Bose 901 equalizer.

Can a Bose equalizer be used with two speakers?

If your listening environment has two speakers only, use the standard setup method. You’ve purchased a Bose 901 equalizer by itself or as a part of a Bose 901 speaker system, and now it’s time to set it up.

You’d have a range of +/- 24 dB in each band which would cover the full range of the 901 Active Equalizer. On the extremes, you’d have both equalizers gained up; in the middle, you’d only have the first gained up slightly and the second left flat.