Question about B&W DM605 S2 Speaker

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Dm605 s2 speakers have static noise - B&W DM605 S2 Speaker

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If the noise you hear comes from the tweeter or the midrange speakers, it means your amplifier is noisy; if the noise comes from the woofer, then the internal amplifier (it has its own) of the speaker is noisy. If both speakers are noisy, it is most probable that the "static noise" you hear comes from the external amplifier, which you will have to check or change.

Posted on Aug 13, 2014

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Posted on Jan 02, 2017

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SOURCE: Load Clicking Noise on Deep Bass or Explosion sequences

When you play to loud, the sub element hits the magnet and thats the sound you are hearing. Nothing wrong with the speaker, but you could damange your sub element doing this several times.
Solution, turn the volume done.
The speakers sound great, but remember there are only 2 7" speakers, they cant produce an earthquake. For that you need bigger subbs.

Posted on Aug 19, 2008

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SOURCE: It is an old speaker (DM601 S2) but well cared

It sounds like a ground problem with the speaker crossover circuit or the amplifier. Turn the amp off and disconnect one speaker and interchange it with the other using the same speaker wires. If the static speaker is now working interchange the speaker wires and try it again. Or if the same speaker still has static it is the speaker. If the static is on the same channel then you have a bad wire or if both channels work it was a bad connection. If the problem remains on the same channel change the speaker wires. If the problem switched to the other channel then it is a bad speaker wire or connection. If the same speaker has the same problem it is most likely the crossover circuit in the speaker which is used to filter frequencies of the audio signal by using capacitors and coils. If the static speaker is now working and the other speaker is now not working it is the amplifier. If the static problem is on all input devices I would trouble shoot the preamp section of the amplifier.

Posted on Jun 23, 2010

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It is an old speaker (DM601 S2) but well cared for. Have clear sound in one speaker and static in the other.


It sounds like a ground problem with the speaker crossover circuit or the amplifier. Turn the amp off and disconnect one speaker and interchange it with the other using the same speaker wires. If the static speaker is now working interchange the speaker wires and try it again. Or if the same speaker still has static it is the speaker. If the static is on the same channel then you have a bad wire or if both channels work it was a bad connection. If the problem remains on the same channel change the speaker wires. If the problem switched to the other channel then it is a bad speaker wire or connection. If the same speaker has the same problem it is most likely the crossover circuit in the speaker which is used to filter frequencies of the audio signal by using capacitors and coils. If the static speaker is now working and the other speaker is now not working it is the amplifier. If the static problem is on all input devices I would trouble shoot the preamp section of the amplifier.

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I Need values of resisters R-82 and R-85. They feed plus and minus voltage to power amps. amps shorted and burned resistors. The amp is a subwoofer amp in a B & W model DM605 s2 speaker. Any help would...


If the resistors were blown, the power amp which is either transistors or an amplifier package has been shorted out. The resistors are very low resistance, and used really as slow blowing fuse. The value is probably a fraction of an ohm (eg. point two ohms)

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When you say static that they both work but one is noisy or are you saying that the only one is making a noise and nocoherent sounds coming from either

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CHECK REAR AMPLIFIER (INSIDE TRUNK) BAD CAPACITOR OR BAD CONNECTION. REPAIRED MINE TODAY.
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Static noise coming out of speakers


What sort of computer do you have? Is it a laptop or desktop? Many laptops have this problem and it is quite widespread in laptops. The crackling or humming noise could be a result of interference from the mains power signal.

If it's a laptop, try running it on battery alone (take out the mains power cord). My laptop has this kind of noise in speakers when running on mains electrical supply, but it goes away like magic when I run it on battery.

A more long-term solution is to buy a 'Ground Loop Isolator' and insert it between your computer and the speakers/earphones. They are quite cheap and you could get it for under £10. It removes all static noise and you'll hear crystal clear sound.

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Check for the Third earth wire of your computer else check for the motherboard taking earth for the cabinet.

 

Good luck

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Load Clicking Noise on Deep Bass or Explosion sequences


Hi everyone having problem with B&W DM605 S2 speaker. The speakers are rated at 8ohm but during playback the impedance drops below 4ohm at low frequencies. It overloads weaker amplifiers and sometimes causes DC voltages to be injected into the speakers. Since the speakers in question are with active sub it appear that some elements on the PCB could be damaged. I would opt for LM431 (Adjustable Precision Zener Shunt Regulator) and associated elements. It could also be the rotary switch (the one used to adjust base levels - 2pole/6way) as contacts weakens over time. Possible solution: 1. switch your amp. to 4ohms 2. with the sub turned off change the position of the switch few times from max left to max right before setting it up in the desired spot.
If the problem persists: 1. replace the switch
2. replace suggested elements checking also KBL401 (Rectifier). TDA7294 (Amplifiers) are usually O.K.

Apr 18, 2007 | B&W DM605 S2 Speaker

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