Z5500 farting noise not from subwoofer. - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 15 Old 11-19-2015, 08:19 AM - Thread Starter
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Unhappy Z5500 farting noise not from subwoofer.

So, i got a set of Logitech Z5500 second hand, and first thing i noticed was a farting sound like air escaping out of the back of the cabinet @ 30-40 Hz

So i got elastic silicone and made a new seal between the enclousure and the amplifier rack, (i also played the sub with the rack out resulting in no farting sound, so i figured it was not the sub making it. (kind of predicted that.

Sealed it good and screwed it all back together. 24h later waiting for the seal to get solid, i played 35Hz and the sound is still here, im very frustrated because the sound is very annoying.

Also gone all over the back plate with a piece of paper while playing 35 Hz, with no noticeable shaking due to air leaking.

When i cover the port the sound seems to minimize/almost go away.

Anyone have a clue? I just want it to sound proper, and if anyone here might have a solution that works id be out of my mind from happiness
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post #2 of 15 Old 11-19-2015, 08:25 AM
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port chuffing?
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post #3 of 15 Old 11-19-2015, 08:56 AM
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Originally Posted by HagenK View Post
port chuffing?
Yeah this would be my guess too. Turn the volume down some.

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post #4 of 15 Old 11-19-2015, 08:57 AM - Thread Starter
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I dont think its port chuffing, its not coming from the port really, its coming from the backplate. And port is really big, the air isnt really being forced through to say it like that.

Thanks for answer though
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post #5 of 15 Old 11-19-2015, 09:33 AM - Thread Starter
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Also i dont push it THAT hard Transmaniacon, its even noticeable under half volume.
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post #6 of 15 Old 11-19-2015, 09:52 AM
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I would start by turning it down to see if that makes a difference. Also make sure the screws on the plate AMP are all tight. If the AMP is loose that might be giving air a place to escape. That being said, I'm going to agree with what others said, this does sound like port chuffing.

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post #7 of 15 Old 11-19-2015, 10:04 AM - Thread Starter
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Yeah, the sound is volume dependent, all screws on amp are checked tight.
Ill make a video of the sound maybe it will be easier.

Shouldnt a port chuffing noise come from the port? :P
The port is like 4 inches in diameter and has tapered edges, and it takes alot to get air pressure through that port, which it is far from doing when i play it below half volume @ 35 Hz.

I can make a video of the sound if the bass doesnt crap up the mic.
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post #8 of 15 Old 11-19-2015, 10:16 AM - Thread Starter
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You can hear the fluttering from behind the subwoofer, not port at all.
This post is just so i can post link in next: (min 5 posts for link)
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post #9 of 15 Old 11-19-2015, 10:16 AM - Thread Starter
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post #10 of 15 Old 11-19-2015, 11:02 AM
 
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Quote:
Originally Posted by Kristian Tveiten View Post
You can hear the fluttering from behind the subwoofer, not port at all.
This post is just so i can post link in next: (min 5 posts for link)
You should open up the amp plate and check on the sealant around speakers connectors,main,power cable connector and also the fuse holder.
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post #11 of 15 Old 11-19-2015, 11:50 AM - Thread Starter
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Originally Posted by superbabyboy1984 View Post
You should open up the amp plate and check on the sealant around speakers connectors,main,power cable connector and also the fuse holder.
I already sealed the speaker connections and the power connection very well from the backside and front, applied plenty of silicone. The sound seems to originate from the speaker connections, which i have sealed from both the front and back. I dont think i will attempt opening it again since its probably sealed shut now. One would believe though that there would be plenty of air coming through with that sound, but putting a little paper infront of the connections and to the sides, reveals no air flow.
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post #12 of 15 Old 11-19-2015, 12:25 PM
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Sounds to me like there is a piece of paper or plastic that got into the port hole. and is inside moving about.
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post #13 of 15 Old 11-19-2015, 01:15 PM - Thread Starter
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Originally Posted by rush2049 View Post
Sounds to me like there is a piece of paper or plastic that got into the port hole. and is inside moving about.
The port is so big i can stick my whole arm in there, nope theres nothing stuck there, again not coming from the port.
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post #14 of 15 Old 11-19-2015, 02:48 PM
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You could save some money and upgrade to a decent subwoofer
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post #15 of 15 Old 11-20-2015, 07:24 AM
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Quote:
Originally Posted by Kristian Tveiten View Post
The port is so big i can stick my whole arm in there, nope theres nothing stuck there, again not coming from the port.
I used to own this speaker set so I know.

I mean like... it is in the box part of the sub, not in the tube any longer.
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cabinet issue , leaking air , logitech z5500 , sound , subwoofer

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