Question about Bose 901 VI Main / Stereo Speaker

4 Answers

Bose 901 speakers the wiring inside

I would like to know how the nine speakers in a bose 901 ser2  speaker are wired up inside. from what I had found out so far the drivers in the ser 1 and ser 2 were 8ohm now with nine drivers to hook up in each speaker if they were all hooked up plus to plus neg to neg it would be a reactive loadand all plus to neg well your load would be very large indeed. So how did they do it without blowing up amps? something else if they used a combonation of the two to fix the load would this not lead to one driver killing the bass of the one beside it (out of phase)?  please if you can help with this thanks.
yours Jack G.

Posted by on

  • Barnhocone Feb 20, 2008

    I have a set of Bose 901's and I have replaced the Foam edges on eight of the 9 drivers with great success. However, I cannot gain access to the 9th speaker the front one due to the front grill being removable. These speakers are a old Series V set.

    Any suggestions would be greatly appreciated.


  • Anonymous Mar 29, 2008

    why are we even having this discussion.... bose sucks



4 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 3 Answers

- Bose 901 Series I and II speakers have 8 Ohm impedance each.
- A row of 3 speakers in series gives you 24 Ohm.
- 3 parallel rows gives you finally 8 Ohm.

Front with 8 speakers (view from the rear):
(1) (3) (5) (7)
(2) (4) (6) (8)

Rear speaker is number (9)

Row 1: -(1)+ -(3)+ -(7)+
Row 2: -(5)+ -(9)+ -(2)+
Row 3: -(8)+ -(6)+ -(4)+

Posted on Jan 12, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 8,546 Answers

The Active Equalizer uses standard garden variety stereo RCA cables.

Posted on Apr 13, 2009


I have a pair of the 901 and the active equalizer but they have been in the closet for 6 years. I tried hooking them up without the equalizer and they did not sound good at all. I need to find a set of wires for the equalizer. Is this a special order or should Radio Shack carry them? Also how much would it cost to get the pair refoamed?

any help is appriciated.

Posted on Jul 08, 2008

  • wine on deck Oct 18, 2010

    bose 901 are great but misunderstood speakers. they use the back wall, side walls, floor, and ceiling as a giant horn (or waveguide, in Bose speak). If you don't have five square flat reflective walls to bounce the sound off of, they won't work as designed, and won't sound good.

    If you DO have the room and walls for the 901s, then follow the directions on how to place them, and put on some music. If you A-B the 901 with another type of speaker, you're likely to think the 901s sound muffled, with little high-end. but ears are interesting things, and if you stop switching back to the "normal" speaker, your ears will adjust to the tonal balance of the 901 and the high-end will emerge fully after about 30 minutes. It will be at this time that you realize that the source of the sound appears to be coming from out past the back wall - somewhere between 8 and 50 feet past it, in fact, depending on your room dimensions and where you placed the 901s. the effect is absolutely stunning, and no other pair of home speakers I know of can replicate this sound stage. Thats the Truth about the 901. Anybody who says they're no good has missed the point.


If I remember correctly, the 9 X 4.5" drivers (for each speaker) are 0.9 ohms each impedance. They are wired in series, thereby achieving an 8.1 ohm impedance per load speaker (9 * 0.9 = 8.1). The active equalizer for the speakers produces a response curve necessary for reproduction of rich bass and high which deteriorates due to the combination of full range drivers wired in series. Larger amps ( > 60WPC) are usually necessary for Series one and two pairs to reproduce better bass. I don't recommend anything after the series 2, as the sound just seemed to get progressivly worse to increase efficiency, so that smaller amps would be needed. Just get yourself a nice HK 2-channel receiver, and your series 2's will sound alright so long as your room is *perfect* for sound reflection, and your speaker surrounds (cloth in the series 2) are in good shape.

Posted on Jan 06, 2008

1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Not sure of how to wire these speakers ( internal ) Bose 901 series iv

Found on Google Search: "bose 901 internal wiring" You must first identify which series you have. The first two series were acoustic suspension, and used nine 8 ohm drivers in a series/paralel configuration. Series III through VI used nine .9 ohm drivers all wired in series. Series III and IV had an additional terminal for use only with the Bose Spacial Control Receiver. Series III through VI are easy to identify, as there are three ports sticking out the back of each enclose. The 1st two series have no ports.

Jan 17, 2011 | Bose 901 VI Main / Stereo Speaker

1 Answer

Bose 901 series 6 equlaizer problem

Only a careful experiment with steadily increasing volume would reveal the answer. Or measure the resistance of your cobbled work to see if it sufficiently high to avoid amplifier stress.

Original Bose 901 drivers in many series' are available on eBay and other places. I would NOT mix drivers within an enclosure. They should all match in every respect. Bose typically uses some very low impedance that totals to 8-ohms as wired inside.

There are many 'golden ears' who have used 901's without the Active EQ at all or improperly configured and they have been happy with the sound. Sonic beauty is in the ear of the beholder.

I would NOT forgo the EQ.

Jul 11, 2010 | Bose 901 VI Main / Stereo Speaker

1 Answer

901 VI Main / Stereo Speaker: Good evening...I recently purchased a pair of used...

I believe there are two nuts on each post. The first one locks up against the firewall and the second secures the speaker wire against the first nut. Tighten the lower nut snug against the enclosure.

May 06, 2010 | Bose 901 VI Main / Stereo Speaker

1 Answer

Accidently shorted wires to 901 speaker. No sound. No fuse? Amp is okay

What is the electronics that won't work? Shorting speaker wires shouldn't hurt the speaker.

Jan 08, 2010 | Bose 901 VI Main / Stereo Speaker

1 Answer

Proper wiring connection on bose 901 speaker with onkyo tx-sv424 purchase 5 years ago

trying to hook up sereas 2 901 to onkyo sx 424 i have access to carver c 1 if that will help

Nov 29, 2009 | Bose 901 VI Main / Stereo Speaker

4 Answers

Impedance on my Bose 901 Series VI

there 12.9 ohms. there bose speakers not a wallmart if you want a lower impendance then run them in parralell brigde of a bridgeable amplifer/receiver

Nov 09, 2009 | Bose 901 VI Main / Stereo Speaker

1 Answer

901's directed to TV

Yes, you can plug your TV directly into the Bose 901 Equalizer, but you will still need to go from the EQ into an amp to drive the speakers. The Bose EQ basically is for the speakers, not the signal coming in to it. Because of the speaker design, the EQ "shapes" the sound to compensate for the speakers. Please rate my answer, thanks.

May 22, 2009 | Bose 901 VI Main / Stereo Speaker

1 Answer

What kind of amplifier and other accessories are recommended for bose 901 speakers

I would recommend a high power 2-channel amplifier, minimum 16 guage speaker wire, and of course the Bose 901 active EQ that matches the series of your speakers. I use a Yamaha mx-830 power amp & cx-830 pre amp 170 wpc They (Bose) claim that they're unlimited power handling, But if you use a amplifier with to little power and overdrive it to make it louder, you could damage the speakers or amp. With my 170 watt class A amp,the 901 series 6 will blow wind across the room. Go with the best amp you can afford! best for money- Yamaha,Denon,Onkyo!

Dec 22, 2008 | Bose 901 VI Main / Stereo Speaker

1 Answer

Bose 901 repair...

Bose 901s series 1-6 are all wired in the same way. that is nine one ohm full range drivers wired in series to produce around 8 or 9 ohms. No way it can be a short, think of the old christmas lights that were wired in series , one light went out, they all went out. I would check the wiring first to make sure no loose connections exist. The only way to access the wiring is to remove each driver from the cabinet. If all wires are intact, You may have a damaged driver. A simple test with a ohm meter will tell you. set to lowest ohm setting, each driver should read 1 ohm. If your speakers dont have the air tubes in back, you have series1 or 2 removing the drivers will not affect the vaccum, just replace the gasket material around the drivers.

Nov 08, 2008 | Bose 901 VI Main / Stereo Speaker

Not finding what you are looking for?
Bose 901 VI Main / Stereo Speaker Logo

5,016 people viewed this question

Ask a Question

Usually answered in minutes!

Top Bose Audio Players & Recorders Experts

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

The Knight
The Knight

Level 3 Expert

75178 Answers


Level 1 Expert

6 Answers

Are you a Bose Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides