Question about Bose Acoustimass 15 System

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Regarding woofer what terminal do I tap exactly?

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Re: regarding woofer - Bose Acoustimass 15 System Speakers & Subwoofers

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Posted on Jan 13, 2008

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Has 2 positives and negatives do I hook up to same terminals or seperate

The extra terminals might be there so you can bi-amp the speakers. (Drive the woofers and tweeters with separate amps). This also allows you to use only the woofers in the units as subs with different high frequency units; as in a home theatre system.

May 25, 2016 | Digital Audio Speakers & Subwoofers


How To Bi-Amp And Bi-Wire Speakers!

What is the difference between bi-wiring and bi-amping?
Bi-wiring is using the same power source (amplifier) but separately connecting that power source to a woofer and a midrange/tweeter on a speaker.

Bi-amping is using two separate power sources (amplifiers) and connecting one amplifier to a woofer and the other amplifier to a midrange/tweeter on a speaker.

How do I bi-wire?
Your speaker must have two separate positive and negative connections (one set for the woofer and one set for the midrange/tweeter). Connect one wire between the positive terminal on the amplifier/receiver the positive terminal on the speaker. Connect the other wire from the negative terminal on the amplifier/receiver to the corresponding negative terminal on the speaker. Remove the jumper straps connecting the two sets of speaker inputs. Repeat this process for the second set of terminals on the speaker, connecting them to the same positive and negative terminals on the receiver/amplifier. Repeat the steps for each speaker you wish to Bi-Wire, connecting them to the appropriate terminals on your receiver/amplifier.


How do I bi-amp?
Bi-amping is similar to bi-wiring, but involves separate amplifiers: one for the woofer and one for the midrange/tweeter. Passive bi-amping involves a direct hookup between each amplifier and the speaker terminals. True bi-amping involves hooking the preamp to an electronic crossover that replaces the passive crossover network in the speaker. The active crossover then connects to multiple power amplifiers.


on Jul 13, 2010 | Speakers & Subwoofers

1 Answer

Bose woofer acoustimass 20

Have a acoustimas 20 woofer. Since it is the only thing I have I tried to custom connect it to a source (my mp3 player) to get a signal. It all worked fine by soldering the wire terminals straight to the pins of the DIN. All worked fine until I turned up the volume on walman and maxed out the 2 settings on the woofer, The woofer died after that. I am trying to find what could have gone wrong, any help would be greatly appreciated.

Aug 06, 2012 | Bose Acoustimass 20 System

1 Answer

Tweeter works but not the woofer

Take out the woofer (disconnect it from all wires). Take a 9V battery and connect two leads to it. Tap the positive lead to the positive on your speaker while touching negative to negative. You should see the woofer move a little and make a little noise. Don't do it for longer than a second or two or you can burn up your speaker. If it doesn't move or make a noise, your woofer is blown.

Jan 14, 2011 | Mackie SRM-450 System

1 Answer

How it can be connected to a stereo amp

if ur amplifier have a pre out, then u can connect that to ur L/R input of ur sub woofer.

if not the only way is, connect ur amplifiers speaker output to sub woofers speaker input and then connect ur speaker to sub woofer speaker output terminal. remember don't inter change positive and negative wires.

if ur amplifier have speaker A,B connection then it is very easy. connect the speaker A to ur left and right speaker. then connect speaker B to ur sub woofer's left and right speaker input. be sure to make that speaker A and B switch is in on position. the power on both and check it. ( use good quality speaker cable to connect the sub woofer)

your sub woofer is designed to work , both at low level and high level input.

Dec 17, 2010 | Yamaha YST-SW215 Subwoofer

2 Answers

The woofer on one of my speakers stopped working. The tweeter seems fine. My DMM shows that the resistance across the 2 internal leads that connect to the woofer continuously cycles from 0 through...

The voice coil is open, you can look real close at the spider wires that are soldered from the two terminals to the cone to see if they are bad, otherwise you will need new woofer, you can try getting the woofer from

Feb 14, 2010 | Boston Acoustics Micro90X Speaker

2 Answers

I have a set of cerwin vega ls-12 3way woofer works but tweeters

There is an old cheap way to test any speaker. If you have a multi-meter, set it on OHMS. Then, while holding one lead against one speaker terminal, tap the other meter lead to the other speaker terminal. If the speaker is good, you will hear faint crackles. If you do not have a meter do not despair, you can do the same test using an AA or AAA battery with leads held to the battery.
Good luck! P.S. Nice speakers.

May 22, 2009 | JBL EON 15-G2 Powered DJ Speaker With EQ...

2 Answers

Defect woofers

If you can get the same woofers, then yes you should be OK, pull the units, get the part number off the back and then try Google for a source.
If you can't find a exact replacement then you are looking at replacing all of the woofers, rule of thumb is that you do not want to mix speakers, you end up having one speaker sounding different than the other, so what ever you do to one, you need to do to the other. In that way what tonal changes that happen will happen to both speakers and they remain matched.

Now if you need to find replacements, you need to replace with like impedance speakers, and try to find a speaker very similar to what you are replacing. Just don't throw anything in the cabinet, if the impedance isn't correct not only the sound could be bad, but you could also damage your Amp or Receiver.


Aug 17, 2008 | PSB Image 4T Speaker

1 Answer

Same problem with woofer

hi, to test the woofer , u take a 1.5 v battery, put one end of the +ev on one terminal and tap the -ev on the other and notice if u can hear a clicking sound as u tap, if not than the speaker/woofer coil or the cross over curcit is open, let me know,

Jan 12, 2008 | Bose Acoustimass 15 System

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