Question about Bose 3·2·1 II System

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My left speaker buzzers. When I swap speaker positions it is still the speaker connected to the left output that buzzes. How do I fix this problem?

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Check your cable connections to this channel. Reverse them to see if the problem changes channels. If the problem continues to be in that same channel, you should have the unit repaired by qualified serviced personnel. It may be an electronic fault in that channel.

Posted on Oct 07, 2010

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Posted on Jan 02, 2017

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1 Answer

In my JVC RX 8SD only works a channel. How do I repair this defect?


Start with the simple things.
  • Check left right balance
  • Swap output speakers left to right
  • Swap the speakers at the receiver to make sure no wire open/short
  • Swap input RCA cables left to right red/white - white/red
Ok No JOY!
JVC has thermal overload circuits/overload on most of there Amps.

Remove power for a minute or two to see if there is a reset.

Rewire speaker connections to speaker set 2.

Connect REC out to Rec In swap cables and see if problem is in pre-amp or power amp.

Check internal fuses.

Jan 19, 2016 | JVC Audio Players & Recorders

1 Answer

Why is there no output to right speaker?


Confirm that the audio balance is not set to the left but in the middle!

Swap speaker connections to make sure the problem doesn't follow the speaker indicating the wiring to the speaker or speaker is bad.

Need to confirm that the input to the selected device is OK. Swap input RCA Red and White connections from the source. If an optical confirm that the source balance if the setting is available is set to middle

On many upgrade receivers as this Sherwood there is a test feature that confirms with an audio beep the speaker balance and connections. Look for a "Test" button.

Beside swapping the speaker connections left to right swap the speakers between the A and B speakers. See image for connection detail.


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26018858-hfkmdqqdm3z2igelmps1igcf-5-2.jpg

Dec 23, 2015 | Sherwood RX-4109

1 Answer

Hello, can anybody help? I have a Marantz PM-47 Amplifier. I think i have a problem with the right stereo output. I have change all the wires over, and eliminated any speaker and wiring problems, it seems...


You don't actually say what's happening!
So the only advice I can give is that in stereo amps the two channels are the same. So if you are testing it you can compare the left channel with the faulty right. So a voltage reading on the left should match in the same place on the right. You can also touch the amp with an insulated tool. While switched on it will buzz on the channel in question. So if it buzzers on the left then it should buzz on the right. Touching parts of the amp in this way will quickly tell you what works and what doesn't.

Mar 07, 2014 | Audio Players & Recorders

1 Answer

I need a radio wiring diagram for a Holden Commodore LS 1991


Regardless of colour coding, please follow the following instructions (require multimeter):


Note: Attach multimeter earth wire (black) to the vehicle body. Convenient places may be the metal ignition barrel, the vehicle's car arial plug, cigarette socket body etc.


1) Testing for voltage with key out of the ignition, locate the permanent positive wire. This will wire into the yellow wire on your new stereo. The yellow wire circuit powers the stereo's memory.


2) Testing for voltage again. This time you are testing for a wire which only offers power with the ignition turned on. This one will wire into the red wire on your new stereo, and will power the unit only with the ignition on.


3) Now you know which your vehicle's positive wires are you can now test for an earth wire. Switch the multimeter to the resistance setting. There is one setting which will allow a buzzer to sound once you find continuity. With the ignition off test each wire until you get a buzz and a low resistance reading. This should be your earth wire. Double check this with the ignition in the on position. It should remain the same. If it changes to a positive with the ignition on and with the vehicle's lights switched on, then this is the dimmer feed for the stereo's screen. If you unintentionally found the dimmer feed, then you can ignore this wire, and search again for a wire which only offers an earth.


Now you have your power and earth wires located and can wire these into your stereo before continuing.


4) Next you need to use the stereo's balance and fade controls to allow only one speaker output to work from the stereo. So let's start with Left Front speaker output only. turn the stereo volume to mid way so that you can hear when you have connected to the right speaker. bare the remaining wires on the car side and test combinations of the remaining wires until you find the front left speaker of the car. Wire your stereo's wires once you find the correct connections.


5) Repeat the above steps with all remaining wires, remembering to adjust your stereo's balance and fade controls to only allow one speaker output at a time, to ensure the only one possible channel to work and help you identify which of the car's wires power the speaker you have selected.


Before re-assembly of the dash panel, check that your stereo and all functions work properly, being sure to use your fade and balance controls again to test all speakers individually.


If you want to be extra careful and wire the vehicle's speakers positive and negative, according to your stereo's outputs, not that this makes much difference on standard stereo arrangements, then follow this next step:


Make sure you can see the speakers themselves and connect a 1.5 volt AA or AAA battery to the speaker wires. If the speaker's cone pushes forwards, then the wire you connected to the battery's + terminal is indeed the positive wire and should be wired as such. If the speaker does the reverse, then you have the wires the wrong way around. Do not repeat this test for extended periods as damage may be caused to the speaker circuit.


Tip: Always solder all connections and insulate well from each other. Stereo connections can corrode over time and are prone to movement behind the dash. Poor connections may cause faults and low quality sound.

Oct 30, 2012 | Cars & Trucks

2 Answers

I have a Boston Acoustics VR-500 Subwoofer with a problem. As soon as anything is plugged into the line level RCA jacks, the subwoofer produces a loud buzz/hum. I have tried connecting it to the subwoofer...


I'm thinking you have an open shield ground on the RCA input side. Connecting speaker inputs possibly restores the ground. Try connecting the high level inputs then disconnect the remote end of the cables (floating the grounds).

Then get out an ohmmeter and find that open circuitor or bad solder joint between RCA ground and real ground in the speaker's amplifier. Or.... if speaker ground kills the hum and you want to use RCA Line Level input to the sub, just connect one minus speaker output on your source amp to one minus on the sub's amp.

Mar 01, 2011 | Audio Players & Recorders

1 Answer

How do i install my component


from the speaker outputs of the head unit / amplifier. Connect from the positive and the negative outputs to the respective positive and negative input of your X-over box. Now connect from the X-over woofer/midbass output to the bass driver. Now do the same for the tweeter from the X-over from the tweeter output to the tweeter. Make sure that all the positives and negatives are correctly connected.
If you are going to use your head unit to power the speakers then you should know that:
White & white with black stripe is the Front Left Speaker output
Grey & Grey with black stripe is the Fron Right Speaker output.
Green is rear left
Purple is rear right.
I think you get that the black stripe speaker cables are the negatives.
good luck

dreamsystems.

Feb 11, 2011 | MB Quart - 5.25" 2-Way Component Speakers...

1 Answer

Left speaker has developed a hum. Checked connections and all seems well. Sounds raspy like the speaker has blown.


This is likely due to a problem with the amplifier. You may have turned up the amp to the point of overdriving the speaker. The distortion at these high levels cause clipping and turn what was once crisp, clear sound into a muddied, garbled mess.

If the speaker is left connected to that source long enough, damage to the speaker and the amp may occur.

Without changing positions of the speakers: You can disconnect the affect Front or Rear L & R speakers and swap them (connect the L speaker to the R output of the amp and vice-versa). If the buzzing / hum "moves" to the other speaker, then the amplifier has the problem. If the buzzing / hum stays with the same speaker, the speaker has issues and is likely "blown".

Either way, it is probably not going to be a "cheap fix"

Good luck!

Jun 24, 2010 | Boston Acoustics VRS Micro Speaker

1 Answer

Buzz on Alesis M1Active 520 Monitor


Check your output conections and shielding, try swapping over l for r and see if the problem moves.
Check each monitor on some other source ipod etc.

if it always the same unit with fault then you need a tech.

Sep 17, 2009 | Alesis M1-Active MkII Main / Stereo...

1 Answer

How do i properly connect the wires for a JVC SX-SW5th


Connect the speaker output of the reciever to the input of the speaker. Make sure you connect negative receiver output to negative speaker input and positive receiver output to positive speaker input.

Sep 15, 2009 | Audio Players & Recorders

1 Answer

Output port for left speaker Z2300


I've been having the same problem actually.

In my situation, turning the volume up and down using the speaker volume control will fix the problem. I only have the faint volume problem at some positions of the dial. turning it up usually fixes it. I'm thinking that opening it up and cleaning it might fix the problem (it used to work with an older set of Creative speakers i had).

If that doesnt work im going to try to get a new remote from logitech.

Jul 02, 2009 | Logitech Z-2300 Computer Speakers

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