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Type: Posts; User: David Analog

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    Okay, I originally overlooked that because of the...

    Okay, I originally overlooked that because of the 'DC' abbreviation.
    Open RCAs can still pick up noise. So use 1/2 a short RCA cable to short the left input to the right input and try again with...
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    Jeff, I re-read your OP. Did you indicate that...

    Jeff,
    I re-read your OP. Did you indicate that you still have noise on the tower speakers with the input RCAs of the tower amplifier disconnected at the amplifier end?
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    Under the driver's helm is the best location by a...

    Under the driver's helm is the best location by a country mile even if you must size the woofer down. That is the only location where you can get direct radiation.
    Inside any enclosed locker will...
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    OutbackV2008, All correct. It's pointless for me...

    OutbackV2008,
    All correct. It's pointless for me to explain a bunch of steps, the whys and the logic, when we already know the answer.
    The source electronics must come off the factory harness and...
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    It might help to remove the speakers from the...

    It might help to remove the speakers from the tower before towing because any shimmy over time can wear out the connection. Imagine a heavy bowling ball suspended from a small neck and having to...
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    I've experienced the identical issue as MLA and...

    I've experienced the identical issue as MLA and rotating the collar 180 degrees usually worked. Also, beyond the cautionary notes mentioned above, make sure that both bolts (F & R) are tightened...
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    130

    I don't necessarily suspect water. Just being as...

    I don't necessarily suspect water. Just being as thorough as possible. The fuse blew for a reason and that protects you from something more catastrophic. You're in good hands with Wetsounds.
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    While you were inside the chassis changing the...

    While you were inside the chassis changing the fuse you may have accidentally removed the tiny circuit board jumper that turned the factory set 'blue' illumination to 'red'.
    You need three wire...
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    OutbackV2008, Do you have the identical...

    OutbackV2008,
    Do you have the identical situation as Jeff with the noise in only one zone?
    Is the noise high-pitched alternator whine, only with the engine running, changes with RPM, always at the...
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    It's odd that you have noise in just one zone....

    It's odd that you have noise in just one zone. Are you absolutely positive that the noise is exclusive to the tower speakers? Have you increased the input gain on two channels of the in-boat...
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    lakemurray, All boats have multiple forms of...

    lakemurray,

    All boats have multiple forms of noise within their DC system. And alternator whine is the most prominent. The difference is that a well-planned & installed system does not permit the...
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    The amplifier(s) cannot power up without the...

    The amplifier(s) cannot power up without the source unit powering up first. So this is an important distinction. Does the source unit display come on even though you get no sound?
    If you have two...
  13. The easiest way to proceed is to use the existing...

    The easiest way to proceed is to use the existing 4-conductors up the tower. Series the two 4-ohm speakers on each side for an 8-ohm load. Bridge the four amplifier channels into two channels. You...
  14. Thread: Equalizer

    by David Analog
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    1,537

    Of course, that's why it's better to go with a...

    Of course, that's why it's better to go with a specialist (like Earmark Marine or MLA) in the first place. Think of all the other areas of information you are missing out on that could make your...
  15. As MLA noted, the tower and sub are the two zones...

    As MLA noted, the tower and sub are the two zones that typically work the amplification the hardest. Plus, 2-ohms stereo (four speakers on two channels) or 4-ohms mono (bridged sub) is more workload...
  16. Thread: Equalizer

    by David Analog
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    I noticed that within the Earmark Marine on-line...

    I noticed that within the Earmark Marine on-line store, they have the Kicker line driver and list under the "Things to know before you order", that the unit comes equipped with a 2 and 5-meter cable....
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    I'm trying to help but this isn't productive thus...

    I'm trying to help but this isn't productive thus far.
    It is pointless to conduct any diagnoses until you have measured and confirmed that you have healthy voltage.
    It is pointless to chase down...
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    No problem. But when I think of a buss bar I...

    No problem. But when I think of a buss bar I envision one with smaller terminals, whether Phillips pan head or smallish posts. You should have no less than 5/16" posts. If you use a large...
  19. Thread: Equalizer

    by David Analog
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    1,537

    Just a few bucks if you go with the Kicker.

    Just a few bucks if you go with the Kicker.
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    First, a Perko switch is an odd pairing with a...

    First, a Perko switch is an odd pairing with a combiner (ACR/VSR/voltage sensing relay or solenoid). I would change over to the Blue Sea dual circuit battery switch.
    Second, in respect to...
  21. Thread: Equalizer

    by David Analog
    Replies
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    1,537

    As posted above, "Seriously, who needs to have a...

    As posted above, "Seriously, who needs to have a knob to change the phase of the sub on the eq???? Likewise, do I need to change the crossover frequency of my sub on the fly? Um, no."

    I actually...
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    I would want to hear one tower speaker resting on...

    I would want to hear one tower speaker resting on the floor with a brand new run of wire and ALL else disconnected. That would exclude a speaker shorted to the tower via the speaker wire harness. ...
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    So you are saying that the tower speakers play...

    So you are saying that the tower speakers play music when the boat is off but have a great deal of noise, but absolutely no music when the boat is running, and the noise is then significantly higher....
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    Sure, just make certain that everything positive...

    Sure, just make certain that everything positive (alternator/starter feed, helm buss, and ALL audio equipment) comes off the dual battery switch 'C' output post and that nothing is wired...
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    The number one cause of noise is a supply voltage...

    The number one cause of noise is a supply voltage differential or ground differential (basically the same condition) between any two items in the audio path. To remedy this ALL 12 volt supplies of...
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