Hello Gregory,
Here all the owner's manual for the 901 Series.
Hope that will help.
Good luck,
JP
https://www.manualslib.com/manual/19582/Bose-901-Series-Vi.html#product-901
https://www.manualslib.com/manual/19598/Bose-901-Series-Ii.html
https://www.manualslib.com/manual/19599/Bose-901-Series-Iii.html
https://www.manualslib.com/manual/217957/Bose-901-Series-V.html
https://www.manualslib.com/manual/217958/Bose-901-Series-Iv.html
https://www.manualslib.com/manual/217925/Bose-Lifestyle-901.html
SOURCE: Bose 901 hook up
Assuming you really want to have a working surround system you will need a separate stereo amplifier for the 901's to accomodate the need for the Active EQ. There is no way to separate your receiver's front L&R channel preamplifiers from their amplifiers.
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 and the 901's amp channels. My receiver controls everything and just drives the Center and Surrounds. You would probably just get a nice 2-channel amplier for the 901's. However, the TX-SR606 doesn't provide power for a Subwoofer, should you decide to get one, so you would need another amplifier channel for that, too. Therefore, you might look around for a powerful 3- or 4-channel amplifier so you could drive the Sub, too.
Modest amps would work but at very loud volumes may go into clipping, which is bad for any speaker. I'm using only 100W for mine and it has plenty of steam for the 901's.
For connection I would run a pair of RCA cables from the Front L&R Audio Line OUT to the Active EQ's Line IN; then the EQ';s Line OUT to a separate amp's Line IN. Attach the 901's to the new amp, run through the receiver's setup procedures for volume, etc and you're done.
Not what you might want to hear but 901's have special requirements. I've had mine for 25 years and have no regrets.
A seperate subwoofer channel on the amp could be used. Just run a single RCA channel from Sub OUT to one available channel IN on the amp and attach the subwoofer to it. Two would work, also. That's what I do. You could use a 1-2 RCA splitter to feed two avaailable channels on a 4-channel amp. The iterations are many. Have fun.
SOURCE: 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.
SOURCE: i have an old integrated amplifier and an old BSR
Hook the signal source to the equalizer input and the equalizer output signal to one of the signal inputs on your amp. This is one way, but this way only one signal source will go through the equalizer (unless it has several signal inputs and a source selector switch).
The other way (inserting the equalizer between the preamp and the main amp) is:
If your amp has RCA connectors on the back named "preamp out" (or similar) and "power amp in" (or similar) that have slugs connecting them, remove the slugs, hook the "preamp out" signals from the amplifier unit to the signal inputs on the equalizer and outputs from the equalizer to the "power amp in" inputs on the amplifier.
Basically, what you do is that you insert the equalizer between the preamplifier section and the power amp section of the integrated amplifier so that you can still select the signal source without having to switch any signal cables (however, i can't say if your amp has got this type of "slug" connection feature between the preamp and the power amp on the rear panel, so i'm not sure which way you'll have to hook it up).
Hope you can make it work the way you want.
regards
Triarcuate
SOURCE: I recently bought a carver
Yup, theBose 901's need their own amplifier dedicated. Get yourself a nice Carver M-100T or M400 Cube and run 'em off the Active Eq attached to the C1000 Front Pre-Outs.
Just wondering, why is this a new question to ponder if you've had the 501's and 901's all along. They never could coexist on a single amp.
I have 901's up front and 301's all around.
You could use the EQ but it won;t sound as good as it will with a pre amp and also could make it a bit trickier when adjusting the volume and getting it to sound right.
Testimonial: "Thank you very much. I wouldn't like to mess up my Bose. So I guess It's better to buy a PREAMP and then connect accordingly. Once again, thank you for your time and concern , oh, and your most valuable information."
There is no way around this part. Get a separate power amp for the 901's if you want to use them in a multichannel way or alongside non-901 speakers.
Connect the Active EQ between the pre-outs and the amp input. Run speaker assignment, levels, etc and have fun.
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