Bass makes a loud 'thump' sound when turning off - Blu-ray Forum

oyboe · 09-01-2009, 09:40 PM

I have a newbie question. When I turn my sound system off, sometimes my bass makes a loud 'thump' sound. Anyone have any suggestions?

My system consists of:
Sony STR-DG910 7.1 Channel Home Theater Receiver
Harman Kardon HKTS-18 5.1 Channel Speaker System with active bass
Panasonic 50" PZ700U plasma tv

Thanks for anyone that can offer a suggestion

Blue_Baron · 09-02-2009, 02:30 AM

These links might help explain:

http://answers.yahoo.com/question/in...8195746AAkh8ai

http://forums.macrumors.com/showthread.php?t=511938

Kirsty_Mc · 09-02-2009, 02:31 AM

Quote:

Originally Posted by oyboe

I have a newbie question. When I turn my sound system off, sometimes my bass makes a loud 'thump' sound. Anyone have any suggestions?

My system consists of:
Sony STR-DG910 7.1 Channel Home Theater Receiver
Harman Kardon HKTS-18 5.1 Channel Speaker System with active bass
Panasonic 50" PZ700U plasma tv

Thanks for anyone that can offer a suggestion

At least you know it's working... relax

Beta Man · 09-02-2009, 06:24 PM

My temporary sub does the same thing........ I'm hoping it completely dies soon.

oyboe · 09-02-2009, 06:49 PM

Thanks. I guess I'll just live with it or buy a power switch for the sub. Wondering if I can program the power switch on my Harmony remote....

DavidAg02 · 09-02-2009, 09:41 PM

Quote:

Originally Posted by oyboe

I have a newbie question. When I turn my sound system off, sometimes my bass makes a loud 'thump' sound. Anyone have any suggestions?

Does it happen when you turn stuff off in a particular order?

Try turning your receiver off first, then everything else.

JimShaw · 09-02-2009, 10:16 PM

Quote:

Originally Posted by oyboe

I have a newbie question. When I turn my sound system off, sometimes my bass makes a loud 'thump' sound. Anyone have any suggestions?

My system consists of:
Sony STR-DG910 7.1 Channel Home Theater Receiver
Harman Kardon HKTS-18 5.1 Channel Speaker System with active bass
Panasonic 50" PZ700U plasma tv

Thanks for anyone that can offer a suggestion

Mine does it when I turn it on and in my case SVS said that is normal and that they (someday) may try to eliminate the thumb

oyboe · 09-03-2009, 06:29 PM

Quote:

Originally Posted by DavidAg02

Does it happen when you turn stuff off in a particular order?

Try turning your receiver off first, then everything else.

I use a Harmony Remote and it turns everything off at about the same time. I may try plugging the active bass into a switch with a remote, but will see.

SRTCraig · 09-03-2009, 08:16 PM

Have you tried turning the sub off first?

I had the same thing happening, but it's due to amplifier design. I found if i turn the power amp first, then the receiver it does not do it.

oyboe · 09-03-2009, 09:34 PM

Quote:

Originally Posted by SRTCraig

Have you tried turning the sub off first?

I had the same thing happening, but it's due to amplifier design. I found if i turn the power amp first, then the receiver it does not do it.

my bass turns off after it detects the receiver is turned off (I believe), but I can either get up and walk over to the bass to manually turn it off (nah) or I will explore getting a switch with a remote to turn it off via the harmony remote.

Anyone have any suggestions on switches available that can be IR or RF programmed?

JimShaw · 09-03-2009, 10:03 PM

My sub has a switch to either keep the sub on all the time or have it turn on when it detects bass from the receiver.

oyboe · 09-03-2009, 11:21 PM

Quote:

Originally Posted by JimShaw

My sub has a switch to either keep the sub on all the time or to have the it turn on when it detects bass from the receiver.

Okay I'll check mine out. I noticed it was fairly hot though when it had been on for several hours so not sure if it should stay on all the time?

09-01-2009, 09:40 PM	#1
oyboe Power Member Member since:Mar 2009 Location:Bleacher seats Blu-ray collection:1008 Blu-ray reviews:12 Trading Score:4	Bass makes a loud 'thump' sound when turning off I have a newbie question. When I turn my sound system off, sometimes my bass makes a loud 'thump' sound. Anyone have any suggestions? My system consists of: Sony STR-DG910 7.1 Channel Home Theater Receiver Harman Kardon HKTS-18 5.1 Channel Speaker System with active bass Panasonic 50" PZ700U plasma tv Thanks for anyone that can offer a suggestion

09-03-2009, 10:03 PM	#11
JimShaw Blu-ray Samurai Member since:Jul 2008 Location:Menifee, CA 4K collection:49 Blu-ray collection:1069 Trading Score:141	My sub has a switch to either keep the sub on all the time or have it turn on when it detects bass from the receiver. Last edited by JimShaw; 09-04-2009 at 12:43 AM.

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09-02-2009, 02:30 AM	#2
Blue_Baron Active Member Member since:Sep 2007 Home Theater Gallery:41 4K collection:757 Blu-ray collection:2310 DVD collection:90 Blu-ray reviews:2	These links might help explain: http://answers.yahoo.com/question/in...8195746AAkh8ai http://forums.macrumors.com/showthread.php?t=511938

09-02-2009, 06:24 PM	#4
Beta Man Moderator Top contributor Member since:Jan 2008 Location:Juuuuuuuust A Bit Outside.... Home Theater Gallery:4 Blu-ray collection:268 Blu-ray reviews: 18 Trading Score:25	My temporary sub does the same thing........ I'm hoping it completely dies soon.

09-02-2009, 06:49 PM	#5
oyboe Power Member Member since:Mar 2009 Location:Bleacher seats Blu-ray collection:1008 Blu-ray reviews:12 Trading Score:4	Thanks. I guess I'll just live with it or buy a power switch for the sub. Wondering if I can program the power switch on my Harmony remote....

09-03-2009, 08:16 PM	#9
SRTCraig Active Member Member since:Sep 2008 Location:Near middle earth Home Theater Gallery:10	Have you tried turning the sub off first? I had the same thing happening, but it's due to amplifier design. I found if i turn the power amp first, then the receiver it does not do it.

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