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  1. #1
    JBL 4645
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    Question Popping HF sound!

    Well I’ll cut to the chase! Basically I have this elusive popping sound on the Marantz 1050 left front HF it’s a mild popping that is cursed by the refrigerator when shutting off or is it when starting up as well.

    I need to isolate/resolve this as its not a good thing especially on the HF side. I think its bypassing.

    Note: it is on the start-up and shut down on the refrigerator.

    I need to get this sorted.

    I’ve just timed the refrigerator and undone the HF lead from the DCX2496 and waited 10 minutes before shutting off. It’s the HF left channel lead that needs sorting. Then again it might be the input left channel on the DCX2496 I’ll have to wait for the refrigerator to start-up again and undone the left front input to the DCX2496 and see which part needs sorting.

    It’s a good thing the popping hasn’t buggered up HF diaphragm or at least I don’t have the Marantz 1050 up high enough otherwise I would be in trouble.

    I have no clue at what the frequency is that is passing though to the HF it has to be lower than 1Khz.:dont-know

    I’m not sure if I mentioned this fault before a few years ago when I was living in the sh!t hole dump. I did notice that the left side had popping issue. Maybe it’s the fault with the DCX2496 or I need a simple affordable filter to resolve this.

    I have one of those (filter thingy’s) for the mains plugs and it does sod all! It’s a good thing I didn’t buy an expensive one.


    It could be (one of a few items that needs isolating). Its not your typical buzzing/humming sound that is constant. This issue only starts up now and then and it can take hours to see which part of the system needs sorting.

    I’ll let you know as and when I’ve sorted the issue. If I can sort it that is!

    bop anyone please move to genreal forum I've posted in the wrong forum.

    Thanks

  2. #2
    RIP 2021 SEAWOLF97's Avatar
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    Is it a Lucas refrigerator ?
    Some kind of happiness is measured out in miles

  3. #3
    JBL 4645
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    Quote Originally Posted by SEAWOLF97 View Post
    Is it a Lucas refrigerator ?


    No is not it’s not Lucas THX approved damn!



    The refrigerator has just started back up again and the popping wasn’t as loud since I unplugged the HF lead from the DCX2496 earlier on, its got me thinking?

    I’ve now disconnected the left input lead and now waiting for the refrigerator to shut-off.

    Now listening to Madonna right channel only!

    I know capacitors store and discharge electrical spikes and maybe disconnecting and re-connecting did something? I’ll find out sooner or enough, I will solve this issue!

  4. #4
    JBL 4645
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    Bugger I was just taking a leak a piss in the bog while carefully listening out for the popping sound on the HF!

    I heard it just as the refrigerator shut-off! So its not the input lead to the DCX2496.

    I’ll wait for it to happen again and this has been going on of months now. I’ll disconnect one of the other leads going to the Marantz 1050 that powers the overhead surrounds channels and see if its not that lead that is the curse of this issue, maybe then again maybe not.

    This can take hours and why didn't I sort this out months ago...sigh

  5. #5
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    How close physically is the fridge to your audio equipment. Maybe it's not transmitted through the power but as an RF spike created from an arcing contact in the fridges thermostat switch. Many times there will be a small cap placed across the contacts of a switch to reduce arcing.

  6. #6
    JBL 4645
    Guest
    Quote Originally Posted by Mike Caldwell View Post
    How close physically is the fridge to your audio equipment. Maybe it's not transmitted through the power but as an RF spike created from an arcing contact in the fridges thermostat switch. Many times there will be a small cap placed across the contacts of a switch to reduce arcing.
    It runs on the same electrical mains circuit that powers the mains plug sockets around the flat, if that helps.

    The fridge is located in the kitchen next to the living room. I don’t think? There is a (mains plug) that isn’t on the same circuit that runs the (mains sockets around the flat) that I can plug it into and isolate the issue.

    By that I mean a socket that is not on the same, circuit.

    I can look around again and see if, I’ve overlooked something as simple that might have eluded me?

    As for (arching) the heater last year, the mains supply that feeds the night storage heater, all the wiring (caked-up) wow what a mess inside LOL.

    Odd this didn’t curse any noise on the sound system because it runs on different circuit.

  7. #7
    RIP 2021 SEAWOLF97's Avatar
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    Ummm, no ....Lucas Electrical Company aka..The Prince of Darkness

    famous to all British car & bike owners.
    Some kind of happiness is measured out in miles

  8. #8
    Moderator hjames's Avatar
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    Quote Originally Posted by SEAWOLF97 View Post
    Ummm, no ....Lucas Electrical Company aka..The Prince of Darkness

    famous to all British car & bike owners.
    Ash isn't a car (or bike) guy ...

    in the 70s, Lucas electrics were worthy of excessive cursing,
    due to gross unreliability

    Thus prompting jokes such as:

    Q - Why do the British drink warm beer?
    A - Because they have Lucas refrigerators

    I had various british cars and bikes, so I know the truth of this joke ... - (Triumph 500 and 75o twins and even a Norton Featherbed, plus MGBGT and some other dreck)
    2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
    7: TIVO, Oppo BDP103D, B&K, 2pr UREI 809A, TF600, JBL B460

  9. #9
    JBL 4645
    Guest
    Quote Originally Posted by hjames View Post
    Ash isn't a car (or bike) guy ...

    in the 70s, Lucas electrics were worthy of excessive cursing,
    due to gross unreliability

    Thus prompting jokes such as:

    Q - Why do the British drink warm beer?
    A - Because they have Lucas refrigerators

    I had various british cars and bikes, so I know the truth of this joke ... - (Triumph 500 and 75o twins and even a Norton Featherbed, plus MGBGT and some other dreck)


    Okay I get the joke now. Maybe I have Lucas parts on it?


    It’s called a Fridgemaster I’ve had since more or less when I moved in, its brand new.

    What I’d like to do is find out which audio equipment it’s affecting as its maze of gear all daisy-chained.

    It could be one or two many items that’s prone to picking up the electrical spike noise on the mains from the refrigerator, the Fridgemaster.

  10. #10
    JBL 4645
    Guest
    Quote Originally Posted by SEAWOLF97 View Post
    Ummm, no ....Lucas Electrical Company aka..The Prince of Darkness

    famous to all British car & bike owners.
    Oh, I see, that Lucas. I thought it was this guy putting electronic Gremlins into THX products to Force owners to upgrade! LOL

    I do have lighter humours side too me.

    Now here’s a strange one? The refrigerator has shut-off but I didn’t notice the popping. Other nights past I couldn’t be asked to notice! Tonight it started to get my attention! Now I’m listening out for it!

    It’s as if it happens when it wants too?

    I’ll see what D.J. has in store this week because this shouldn’t be happening.

    Is it this guy who is the prince of evil? You’re a funny bugger Tom.


  11. #11
    Moderator hjames's Avatar
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    Sounds like you need a good AC Noise filter - Plug it into the wall, plug the fridge into its outlet, and trap the noise at the source ...

    Something like this - http://cgi.ebay.com/ws/eBayISAPI.dll...m=330313198398

    or like this

    http://cgi.ebay.com/ws/eBayISAPI.dll...m=150332761316

    But, of course, you need the UK equivalent ...

    I had to plug my Philips HDTV into one of those to cut the power supply noise from affecting other gear in the house ...

    Quote Originally Posted by JBL 4645 View Post
    Well I’ll cut to the chase! Basically I have this elusive popping sound on the Marantz 1050 left front HF it’s a mild popping that is cursed by the refrigerator when shutting off or is it when starting up as well.

    I need to isolate/resolve this as its not a good thing especially on the HF side. I think its bypassing.

    Note: it is on the start-up and shut down on the refrigerator.

    I need to get this sorted.

    I’ll let you know as and when I’ve sorted the issue. If I can sort it that is!

    bop anyone please move to genreal forum I've posted in the wrong forum.

    Thanks
    2ch: WiiM Pro; Topping E30 II DAC; Oppo, Acurus RL-11, Acurus A200, JBL Dynamics Project - Offline: L212-TwinStack, VonSchweikert VR-4
    7: TIVO, Oppo BDP103D, B&K, 2pr UREI 809A, TF600, JBL B460

  12. #12
    JBL 4645
    Guest
    Quote Originally Posted by hjames View Post
    Sounds like you need a good AC Noise filter - Plug it into the wall, plug the fridge into its outlet, and trap the noise at the source ...

    Something like this - http://cgi.ebay.com/ws/eBayISAPI.dll...m=330313198398

    or like this

    http://cgi.ebay.com/ws/eBayISAPI.dll...m=150332761316

    But, of course, you need the UK equivalent ...

    I had to plug my Philips HDTV into one of those to cut the power supply noise from affecting other gear in the house ...
    Yeah cheers I’ll ask D.J. Electronics later this week if he has anything like this.

    If I disconnected the refrigerator or shut it off at the mains issue sorted! Then again its going to ruin the frozen food, not such a good idea.

    It’s the discharge of the frequency spiking though the mains and passing along or onto the same (wall mains that’s on the same path as the living room).

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