Please help
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Thread: Please help

  1. #1
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    Please help

    Hi all. I need your help to solve a problem. I have connected my audio equipment (amplifier and streamer) and a TV to a shoe Bada model LB 5500. When I connect the Bada power cable to the power (to the wall) a buzzing sound enters my speakers, I had to disconnect the cable from the land of Bada so that the buzzing disappears, I mean if Bada power cable is connected normally (3-prong plug) there is hum, if I connect without the ground wire disappears. What should I do so that the Bada is normally connected to the current and not have the buzz. If anyone knows how to solve it, I would appreciate it. Thank you very much. Greetings.

    Bada LB5500

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  2. #2
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    Re: Please help

    Any help please?

  3. #3
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    Re: Please help

    Seems like you are having a grounding issue. These things can be very difficult to track down. Maybe we will get some ideas on how to fix it. Have you tried a normal power strip instead of this unit? Maybe it’ll be better to not use it at all.
    Joe

    Misho Myronov Wooden Amp and Wooden preamp, AkitikA GT-102 power amplifier, Valvet E2, Avantgarde Duo XD, First Watt SIT-3, Luxman MQ-300, Job INTegrated, Job 250 Monos, Cary 300B SE, Klipsch RP-160M, Klipsch RB-75, ModWright Ultimate Sony XA-5400ES, ASL Wave monos, Kimber Kables, Siltech, Cardas, Avanti Audio cables, Burmester 948, Linear Tube Audio MZ2, Bricasti M1SE, Naim Supernait 2, Lumin U1 mini, McIntosh MCLK12, Conrad Johnson GAT2, Pass Labs XA25.

  4. #4
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    Re: Please help

    Quote Originally Posted by joeinid View Post
    Seems like you are having a grounding issue. These things can be very difficult to track down. Maybe we will get some ideas on how to fix it. Have you tried a normal power strip instead of this unit? Maybe it’ll be better to not use it at all.

    Thanks for answering. At this moment I have disconnected the ground wire of the Bada power cable and there is no buzz, my idea was to buy a better quality power cable for Bada, but first I have to solve this problem. Sorry if I do not explain well. My only problem is when the plug of the Bada power cord has a connection to the ground.

  5. #5
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    Re: Please help

    It might be dangerous but leaving the ground unconnected might be the only way to keep it silent.

    What might be an interesting experiment is to try disconnecting each plug until the speaker go silent. Sometimes it’s only one piece that causes the buzz.
    Joe

    Misho Myronov Wooden Amp and Wooden preamp, AkitikA GT-102 power amplifier, Valvet E2, Avantgarde Duo XD, First Watt SIT-3, Luxman MQ-300, Job INTegrated, Job 250 Monos, Cary 300B SE, Klipsch RP-160M, Klipsch RB-75, ModWright Ultimate Sony XA-5400ES, ASL Wave monos, Kimber Kables, Siltech, Cardas, Avanti Audio cables, Burmester 948, Linear Tube Audio MZ2, Bricasti M1SE, Naim Supernait 2, Lumin U1 mini, McIntosh MCLK12, Conrad Johnson GAT2, Pass Labs XA25.

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  7. #6
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    Re: Please help

    Quote Originally Posted by joeinid View Post
    It might be dangerous but leaving the ground unconnected might be the only way to keep it silent.

    What might be an interesting experiment is to try disconnecting each plug until the speaker go silent. Sometimes it’s only one piece that causes the buzz.

    Good idea, I'll try it. Thank you.

  8. #7
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    Re: Please help

    My guess it is the TV. Is the TV connected to a coax cable? I don't know what the cable TV system is like in Argentina, but in Canada it causes all kinds of ground loop issues when the TV is connected into an audio system.
    Dan Santoni

    Authorized service for (in no particular order) - Copland, Cary, Unison Research, Allnic, Modwright, Ayon, Hegel, Belles, Adcom, Aesthetix, Coincident, Zesto and a whole bunch more

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    Re: Please help

    Quote Originally Posted by blackdog View Post
    My guess it is the TV. Is the TV connected to a coax cable? I don't know what the cable TV system is like in Argentina, but in Canada it causes all kinds of ground loop issues when the TV is connected into an audio system.
    Hello, thank you for commenting, I tell you that my amplifier is not connected to the TV, the power cable of the TV is connected to the Bada, when I have free time I will try what the joeinid user told me. Greetings.

  10. #9
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    Re: Please help

    Does it buzz when no equipment is attached? If it doesn't, try isolating the one that makes it buzz one at a time. Lift the ground on the offender. If it does buzz without anything attached, keep it ungrounded, or consider the unit and home wiring a miss match.
    Main System: Analog - Linn LP12, Origin Live DC motor and Controller, SME V arm, Benz Ruby H 2 cartridge, Wright Sound preamp. Digital - Intel NUC I-7, 16 gig ram, Jriver media center 24, Wyrd4 Sound 2V2 SE Dac, Fathom Hard Drives.
    H-Cat Version 9 preamp, ARC Reference 75 amp, Custom line source speakers - 10 SB Acoustics midwoofers, 10 Fountek ribbon tweeters. JL Audio Fathom f112 Subs
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  11. #10
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    Re: Please help

    Looking at a photo of the Bada LB-3300 internals, particularly this image, it appears the outlets ground lines are wired in series instead of in parallel (star). Also, the unfiltered power lines coming from the IEC inlet are run along the side of the enclosure, alongside the ground lines, to the front toggle switch. It's also not clear to me if there is any chassis ground, but it might go through one of the PCB screws.

    The LB-5500, which claims to support 3000W and 15A, might be constructed differently but I wasn't able to find any photos of the interior.

    For comparison, here is what the APC H15 internals look like. The wiring you see matches up with the bank illustration on the rear. The APC H15 supports 1500W and 15A.
    Neko Audio
    Authorized Dealer: AC Infinity, Acoustic Zen, APC, Audeze, Bryston, Devialet, Dirac, Elite HTS, Fortress Seating, LUMIN, Magico, Marantz, Ortofon, Prism Sound, RME

 

 
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