Hi, I lost the right front and right surround channels on my subject device. I checked my receiver by plugging in other speakers to each channel, checks ok. I checked the speakers by confirming they work on other channels and did the same with the wires, all ok. I popped open the acoustimass module and checked the D connector, and looked on the boards for a fried or loose component, nada. I pulled all of the connectors and reseated them, still no luck. What else is left?
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Re: bose acoustimass 15 series 1 channel loss
Sounds like you may have a blown output transistor or chip, which generally show no external signs of damage. This would take an experienced technician to find and fix, and I commend you for knowing to check the speakers, receiver and cables through substitution! If you're handy with a soldering iron and can find the parts, try replacing the output transistors or chips in question. These are what usually fail in audio power amplifiers - also check any power resistors for opens - some of them are designed to act as fuses to protect the more expensive components.
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The setup is possible, but with several compromises. First off, to use the active equalizer, you'll need to insert this into one of the 2 channel AV channels limiting your listening with the equalizer to stereo only. The acoustimass subwoofer acts a driver/power regulator for the little cube speakers. It probably will not be able to drive the 901s at the correct level when attached to the Acoustimass unit as front left/right speakers. You could try running a dedicated set of speaker leads to the 901s which may work and still allow surround sound, but you'll lose the equalization capability on the 901s.
On my yamaha 375 receiver if I connect digital or hdmi it disables the balance/bass treble etc but they work with anolog don't know if yours might be the same just abit strang if anolog doing it aswell
Clarify, did it ever work for you? Were both receivers used properly configured for the subwoofer? Did you also test the other speaker moduels running off the subwooferto see if they work?
Speaker Receiver setting
• Left and right LARGE
• Center LARGE
• Left and right surround LARGE
• Center surround* LARGE
• LFE/Subwoofer ON
With an Acoustimass 16 Series II system or upgraded Acoustimass 15 Series IlI system only.
1) just trace the wire of working channel and plug out that and connect to opposite side of that channel
for example: if front left is not working, remove pin of front right and plug it into front left
after that listen the sound if front left is working then no need to open amplifier just check the wires of satellite speaker which is not working
how to check broken wire:
1) just observe your speaker nearly if you found any screw holes open it, if u can not find any screw holes remove front net which is fitted by press lock or any stepped groove, you can remove that and if you are removing front net you have to open speaker from casing then after you can find speaker's wire shouldered or bolted to it just check wire and go on after that u'll be sure that weather your speaker is failed or wire!!!
Try this - connect one pair of its speaker wires at a time and test it. Watch the polarity.
• Make sure all cube speaker arrays are connected to the proper terminals according to their position in your room. • Check to be sure all wires are connected to your surround receiver with the proper polarity (+ to + and – to – wires). Incorrect wiring can result in a total loss of module output. • Correct any wiring problems before you plug in your receiver and turn it on.
How do you know the receiver's Left channel isn't the fault? Sounds like a source issue.
NOOOOOOOOOOOOO!!! If you have the room for them to run free and loud, keep the 901's in service. Get them a good amplifier because any multichannel receiver can't deal with their special EQ needs and still drive conventional speakers for the other channels properly.
The good news. I have a setup similar to what I think you're trying to do and it works great! Get a receiver that has has 5.1 analog Outputs so you could drive up to 6 external amplifiers if you want to (I drive 4). Then you can draw off the Front L&R to a separate amp for the 901's and the 'other' (lesser) speakers can live on the receiver's native amplifiers.
A separate multi-channel amp for the 901's was my solution. Because I can run each channel independently to an external amp, I run a Carver AV-406 (5-channel amp) for my 901's in Front, 2 Subwoofers (DBX DB-SW 15's) and the Rear Surround channel (Bose 301), 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 (Kenwood 777's) and Surround speakers (Bose 301's) from its own amps.
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.
** Multi-CH Receiver L&R 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 receiver's speaker level setup.
Any modern AV Receiver with the pre-requisite analog outputs should work. Since you have to buy a power amp for your 901 front channels anyway the receiver need not be a powerhouse. Look for features and lots of connections for digital and analog devices. I lean toward coaxial digital connectors because A) they take standard >> and cheap << audio cables; and B) they can be shared with Y-connectors if you're careful to have only one digital device turned on at a time. Optical SP/DIF is an expensive farce to get into your wallet.
For DVD/Cable Box/Blu-Ray look for multiple HDMI or component connections. Again, length and cable cost made me look at the component connections vs HDMI and I was pleased that I can't see the difference even with HD programming from my cable box. It's all great.