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Left channel With the Bose series IV hooked into the tape loop, left channel is very weak when disconected all ok. Tried on a differen amp with the same results.

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Can you give me more info about your problem... is this a speaker system only or complete with amps. because you said u tried with other amps..

Posted on Mar 18, 2008

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How do I hook up my bose 901s to this unit?


Well the basic connection of the speakers would be the same as another stereo speaker pair. Wire the left and right speakers to the L/R Front Surround speakers on the Denon.

With the 901's I am assuming that there is an external equalizer supplied by Bose. Typically this EQ is installed in a tape loop on the receiver/amp so that it is ahead of the power amplifier that drives the speakers. This EQ needs to be there to attempt to get reasonable frequency response from a speaker that has only 4" drivers. I'm not sure I see any reasonable way to make the EQ work with the Denon AV receiver. You'd likely be better off using the Bose speakers in a dedicated 2-channel stereo and getting a set of speakers for the AV usage.

Apr 16, 2016 | Denon Avr 3805 7.1 Channel Audio Video...

1 Answer

Recently I bought a Harman Kardon HK 3770 Stereo receiver. My question is " can I use a Bose 901 Series VI speaker with this receiver?, since I plan to buy a 901 S VI speaker.. The receiver has no tape...


From the description of the Harmon Kardon, it sounds like you should be able to use the speakers, but you will not be able to use the active equalizer. The equalizer is designed to be cabled into the tape monitoring loop and allows you to listen to the equalized signal coming back into the receiver. Attach the +/- speaker wires to the right and left channel speaker connectors on your receiver.

Jan 15, 2015 | Bose Audio Players & Recorders

1 Answer

I'm trying to hook up a Carver HR-752 to Bose 901's series VI, I would like to use the preamp out and in on the back, do I need a seperate amp to use these? I have them going through the Tape


To setup the Bose 901's so that all of your connected equipment's sound (cable/dvd/games/stereo/etc) comes out of the 901's.
If you already have a receiver with front left and right pre-outs, I would add an amplifier. (other option is a pre-amp) Use the amplifier to create the loop the 901's need w/ their EQ and it will also add a cleaner sound and added power. That's how you can really make the Bose 901's sound amazing.

Feb 01, 2013 | Bose 901 VI Main / Stereo Speaker

1 Answer

How do I connect my bose equalizer to my pioneer amplifier


The manual is at Bose.com.

In any question regarding connections the exact models of all parts in the scenario should be defined.

"Pioneer amplifier" is not unique nor revealing. Integrated amplifer? Power amp? Tape Loops available? Pre-Outs? What's involved as a preamp?

The key thing to know is that any amplifier channels driving 901's must not drive other speakers as the Active EQ severely modifies the Line Level source input. If the EQ (or any sound processor) is used in a Tape Loop on a modern multichannel digital-audio-capable AVR, ONLY 2-channel analog sources will function when the Tape Loop is engaged; and all downstream speakers will be affected by the processing. That's par for the AVR course.

Bose 901 use in multichannel applications (which I have) will require access to Pre-Amp outputs for the chosen channels (likely the Front) and you will need to get a separate amp for the 901's, placing the EQ in series with the chosen amplifier. I currently drive mine with a Carver MT-200T.

Sep 20, 2011 | Bose 901 EQ1915 Home Equalizer

1 Answer

@I got a bose acoustmass 7 it has three inputs left right center,and three outputs left right center dont have paper work I need like a diagram or instructions on hooking it up please help.


you need to run the left speaker output from the amp to the left speaker input on the Bose, the right speaker output on the amp to the right speaker input on the Bose, the center channel output on the amp(assuming it has one), to the center channel input on the Bose...then the right output on the Bose , to the right Speaker..the Left output on the Bose to the left speaker...and finally the center channel output on the Bose to the center speaker

Jan 07, 2011 | Bose Acoustimass 5 III System

1 Answer

I have four bose 901 speakers and one equalizer. I also have a peavy deca 424 amplifier. I have a tape deck with the tape monitor capabilitity. Can these work together and how do I hook theme up?


The presence of 1/4" TRS balanced phone jacks instead of RCA inputs is a problem; and the 1/4" TRS speaker output jacks, too. You'll need to acquire cables with compatible ends.

The amp can handle 4-ohm loads so running two 901's parallel on each channel would theoretically work, but I'd put them in series just to keep from presenting too low a load when you get cranking. At 230 wpc you've got the juice. From Series 4 on the 901's are very efficient.

The Tape Deck will attach conventionally to the Tape Loop on the Active Equalizer.

Once you get the physical wiring compatibility issues worked out:

Patch the Active EQ directly between any source you may be using (Amp In from the Pre-Out of the source, Amp Out to the Peavey input).

You can record the external source onto the attached Tape Deck and you can monitor it by pressing the Tape switch on the 901 EQ.

Start out at low volume and see how it works before turning it loose.

Dec 28, 2010 | Bose 901 VI Main / Stereo Speaker

1 Answer

Bose 901 Active EQ Loop


There's good news and bad news. The bad news is that a multichannel receiver with Bose 901's will only sound right in STEREO on stereo analog material. For one thing, the other speakers around the room are not designed to recieve its Active Equalization and for another, if you engage your Tape Monitor you will not be able to play digital sources. Tape Monitor is for analog stereo material only and on my receiver it disables any digital inputs.

The good news. I have a setup similar to what I think you're trying to do and it works great!

A separate stereo amp for the 901's was my solution. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers. You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W).

Run the dbx and BSR in tandem with each through the tape monitor loop on the receiver but be advised you can only use them on analog source stero material. However, you can still employ the various DSP options to spread the sound around the room.

At my PC workstation across the room I have a stack of analog processors and sources including dbx 3bx-ds, dbx 120x-ds, BSR Spatial Enhancer, BBE 462 Sonic Maximizer, SS-525x EQ, Carver C-9, dbx-224x, JVC cassette deck, Dual 1249 Turntable running through a Garrard MRM-101 Preamp, Pioneer PDR-509 CD Recorder and the Media Center PC stereo analog channels all running through a dbx 400x Program Route Selector (a godsend) which is attached to my ONE TAPE MONITOR on my Pioneer VSX-36TX Receiver. Of course, I have some of my analog processors running in tandem, too, since the 224x only has three processor and three tape loops.

For listening/recording anything 2-channel analog I engage the stack through the Tape Monitor. For everything else I turn the Tape Monitor off. The nice thing about the stack being separate is that I can doodle with recording and use headphones while the TV/DVD/Blu-Ray do something else.

Jan 10, 2009 | Onkyo TX-SR705 Receiver

1 Answer

Equalizer for Bose 901 Series IV


There's good news and bad news. The bad news is that a multichannel receiver with Bose 901's attached as you have them will only sound right in STEREO on stereo analog material. For one thing, the other speakers around the room are not designed to receive its Active Equalization and for another, if you engage your Tape Monitor you will NOT BE ABLE TO HEAR DIGITAL sources. Tape Monitor is for analog stereo material only and on my receiver it disables any digital inputs so you really can't use the Tape Monitor circuit or attached devises for modern digital sources. However, you can still employ the various DSP options to spread 2-channel analog source material around the room. I do.

The good news. I have a setup similar to what I think you're trying to do and it works great! With one caveat - My receiver actually has 5.1 analog Outputs so I can drive up to 6 external amplifiers if I want to (I drive 4). Yours does NOT so we have to be creative in extracting the front two channels from your multi-channel receiver. The obvious place would be at one of the few OUTputs on the back, assuming you have one free to use.

I see Video 1 and MD/Tape have Audio Outputs. Use one of these to feed the Bose EQ. **

A separate stereo amp for the 901's was my solution. I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers and the Rear Surround channel, with the Active EQ between the receiver Front L&R Outputs and the 901's amp channels. My receiver controls everything and just drives the Center and Surround speakers.

You could get by with just a stereo amp for the 901's. A Carver M-200 is a good efficient amplifier that would have you cooking just fine (2x100W). Run it with the Active EQ between the receiver Front L&R Pre-Outputs ** and the 901's amp channels.

** Sony STR-DE595 (Video 1 or MD/Tape Audio Out ***) >>> Bose EQ Amplifer IN, then
Bose EQ Amplier OUT >>> new amplifier IN.


Attach the 901's to the new amp, set its volume to Max and run through your receivers speaker level setup.

*** In either case you will NOT be able to SELECT the source you use for the 901 Pre-Outs for listening, or else the 901's will not get any sound sent their way. This is what's happening to you right now when you select MD/Tape. You're disconnecting the source from the 901 EQ.

You may have to get ugly with your other input components to find them all homes on the receiver. The labeling won't necessarily match up with the device types. Mine is ugly like that and I have a lot of connectors, but I have even more input devices.

If you have CD, TV Cable box and DVD (typical) you need to assess what you have that is digital and use what you can wherever you can, then the leftover analog device(s) - PC? - can go into any available analog input that is left over.

Whichever of these connections you DO NOT use for the 901's will still be available for using some kind of conventional analog recording device or sound processor such as an EQ or dbx Expander. However, as with any digital receiver, selection of that device for monitoring will kill the sound from any DIGITAL source you have playing (or maybe it just won't allow you to monitor).

Jan 17, 2008 | Sony STR-DE595 Receiver

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