Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
I've noticed when setting the speaker levels using the tone from my receiver, I hear a rattle coming from the sub's driver. Its almost like the basket is not fully attached to the rubber surround. I've never noticed it when playing any heavy bass, but then I've never gotten the full effect from LFE I've expected. Is this common?
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
Are you sure it isn't just the housing? I have heard of a few boxes that have had some rattles.
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
At first I thought it might be a cord or something in the component stand next to it. But no, I took off the grill and it was pretty clearly comming from the driver.
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Which sub? Does it sound like some small pebbles rattling in there?
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Sub rattle
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
Mojo, he has EP500 in his sig.
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Sub rattle
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Ok. Does it sound like small pebbles rattling?
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Sub rattle
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
I am the Doctor, and THIS... is my SPOON!
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Re: Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
The sound is more like a window rattling. I tried the "War Of The Worlds"pod emerging scene and did hear it in the more intense spots. But I don't notice in bass heavy music.
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Try putting a "weight" on top of your 500. Just make sure you put a thick towel on your 500 before doing so. I've since put a towel under mine since the beaver was shuffling around too much. I have the beaver (about 15lbs) shown below on top of my 600. On really demanding scenes like the depth charge scene in U-571 or the pod emerging scene in WOTW, the beaver prevents the "rattling" resonance that I hear. The 600 (and I imagine the 500) are not infallible. If you put on tracks 6 or 7 of Plastikman: Closer, you will hear what some that have heard my 600 describe as "basket noises". However, I tried playing the same tracks on a Hsu VTF-3 and not only was half the bass missing, the chuffing noise out of the twin ports was awful. And my Sony was a different tale all together as I could smell the amp cooking and could hear the driver's motor structure bottoming out. Finally, make sure that it isn't your room (or a window) rattling.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Sub rattle
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
Nobody has asked you about your calibration settings. It is possible your running the sub to hot. Have you calibrated everything to 75dB? Do you have an SPL meter from Radio Shack?
If you have the volume on the sub cranked to high, AND have the receiver sub dB levels to high, the woofer will really work hard.
Or, it could just be the port rattling, or something on the back amp panel. I had a rattle once in a 500 I owned, and if I applied preassure with my fingers on the back of the amp plate, the noise went away.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
Everything is calibrated at 75db. With volume at 9 o'clock and trim=flat. I do run the sub +(1-2), but when when setting levels I get vibration in the -2 to +2 db range of 75db setting. I guess I'll have to try a call to Axiom.
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Jul 2004
Posts: 4,444 Likes: 16
connoisseur
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connoisseur
Joined: Jul 2004
Posts: 4,444 Likes: 16 |
Call Axiom. I had the same noise and they hooked me up. No more ratting / tapping.
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Re: Sub rattle
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Joined: Sep 2004
Posts: 11,458
shareholder in the making
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shareholder in the making
Joined: Sep 2004
Posts: 11,458 |
Jonhan, forgive Mojo.
He shows off his beaver every chance he gets.
::::::: No disrespect to Axiom, but my favorite woofer is my yellow lab :::::::
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Re: Sub rattle
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
Mark, are you slightly envious ?
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Sub rattle
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Joined: Feb 2004
Posts: 2,854
connoisseur
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connoisseur
Joined: Feb 2004
Posts: 2,854 |
Mojo,
I gotta ask. What improved your audio more - magic pebbles, crystals, pyramids or the beaver? Also, is the beaver 12ga or 16ga?
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Re: Sub rattle
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Joined: Jan 2007
Posts: 10,490 Likes: 116
shareholder in the making
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shareholder in the making
Joined: Jan 2007
Posts: 10,490 Likes: 116 |
. I never thought the beaver would have any utility but now I'm so glad I chose that as my 10 year gift from the company over the gold watch . Maybe I should sell this idea to Machina Dynamica.
House of the Rising Sone Out in the mid or far field Dedicated mid-woofers are over-rated
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Re: Sub rattle
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
it could just be the port rattling, or something on the back amp panel. I had a rattle once in a 500 I owned, and if I applied preassure with my fingers on the back of the amp plate, the noise went away.
I have been having the same problem with my ep 500. There had been a rattle that was rather anoying coming from the back of the ep500 at certain times. I checked with my new spl meter to make sure my sub was not running too 'hot', and it did not appear to be the case. I called axiom and they suggested I tighten the hex screws on the back of the amp plate. I tightened them all up about 1/2 a turn or so (there were a couple that were pretty easy to turn so I think they may have been the culprit) Viola- no more rattle.
-David
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Re: Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
My rattle is coming from the front driver. I spoke to Brent and he suggested tightening the front screws. I did this but still have the rattle. Brent/Axiom has sent me a new driver which I'll install this weekend.
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
My problem was very easy to fix.
Hopefully changing out the driver will solve your problem.
May you will even find something loose inside that is rattling against the inside of the driver.. or maybe the driver itself is the problem.
Let us know what happens
Last edited by terzaghi; 12/06/07 01:15 PM.
-David
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Re: Sub rattle
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Joined: Mar 2006
Posts: 74
old hand
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OP
old hand
Joined: Mar 2006
Posts: 74 |
The new driver is in and all is well. No more rattle and now a punch I didn't have before. Stuff would sure shake before, but I just felt I was missing something. I can't believe it took a year for me to realize the rattle wasn't from the glass coffee table or the decorative glass marbles on the end table.
M80s,VP150,EP500,QS8(4)
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Re: Sub rattle
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Joined: Aug 2007
Posts: 3,488 Likes: 9
connoisseur
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connoisseur
Joined: Aug 2007
Posts: 3,488 Likes: 9 |
Good for you! There is nothing like the present to be happy!
See Mojo's signature
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Re: Sub rattle
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Joined: Jan 2006
Posts: 353
devotee
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devotee
Joined: Jan 2006
Posts: 353 |
OK - Looks like it's my turn. Sounds like something inside the EP500 has started to rattle on some scenes (for me the new Planet Earth Blu-ray) and it is not calibrated hot (or it wasn't). Looks like from this thread in order I should try: 1) Tighten back screws 2) Tighten front scres 3) Double check some setting is not running 4) Call Axiom!
Thanks Nathan
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs
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Re: Sub rattle
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Joined: Aug 2007
Posts: 3,488 Likes: 9
connoisseur
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connoisseur
Joined: Aug 2007
Posts: 3,488 Likes: 9 |
Make sure it is not the source. I have some TV shows (Seinfeld is the worse for this) that have some poorly cleaned audio that contains some low noises. You might want to try reconfiguring your system so the M60 gets the bass to see if you can hear it there too or not (I can on my M80s).
See Mojo's signature
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Re: Sub rattle
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Joined: Jan 2006
Posts: 353
devotee
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devotee
Joined: Jan 2006
Posts: 353 |
OK I tighted all the screws and it make a little (??) difference - On further invistigation it sounds like the rattle is comming from the plastic front port. If I put my hand in there and press down the rattle stops. If no music is playing and I press down I hear a plastic squeaking sound. I removed all eight screws holding the pastic front port it in but it did not seem to want to slide out. Any ideas or is it a "Call Axiom" time? Thanks Nathan
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs
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Re: Sub rattle
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
It will not slide out as it is attached in side as well. If your careful and remove the front driver and look inside the box, you will see that the port is a two part design that is glued togethor. There are screws inside as well on the back side. Maybe you need to check those internal screws as well, but be careful not to overtighten them.
How cranked up do you have the volume on the sub and receiver. Many people run their subs to hot and create vibrations and rattles.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Sub rattle
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Joined: Dec 2007
Posts: 119
veteran
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veteran
Joined: Dec 2007
Posts: 119 |
I recently bought 2 EP500s. One had a bad rattle from the get go. The other developed a bad rattle after only two days. I removed the driver from one sub and noticed that the voice coil had come unglued from the cone (woofer part). On the other sub this did not seem to be the case but did notice that the voice coil did not operate smoothly when manually moving it in and out which could have been causing the rattle noise. After calling the exceptional Axiom customer service line, they sent out 2 new drivers. All is well so far. Your problem sounds exactly like mine. I'd call Axiom and have them send out a new driver. There must have been a bad batch from China recently.
Don't die with a clean shop!
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Re: Sub rattle
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Joined: Jan 2006
Posts: 353
devotee
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devotee
Joined: Jan 2006
Posts: 353 |
I don't run the sub hot at all (it is about 40% on the back) and was calibrated with an SPL meter originally. The rattle appears to be more related to a specific frequence (harmonic resonance?) than a particular level.
Looks like I'm calling Axiom Monday to see what they suggest as I'm not that keen to start dismatling it just yet!
Thanks Nathan
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs
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Re: Sub rattle
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Joined: Jan 2006
Posts: 353
devotee
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devotee
Joined: Jan 2006
Posts: 353 |
The Axiom service is terrific - after some suggeted fixes a new cabinet is on its way!
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs
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Re: Sub rattle
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Joined: Jan 2006
Posts: 353
devotee
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devotee
Joined: Jan 2006
Posts: 353 |
All is good - the new cabinet only took two days to arrive in Sydney Australia from Canada - I've swapped the bits over and all is good!
Thanks to Brent for sorting it all out without any fuss!
HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs
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Re: Sub rattle
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Joined: Mar 2005
Posts: 7,463 Likes: 1
axiomite
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axiomite
Joined: Mar 2005
Posts: 7,463 Likes: 1 |
Hey, congrats, jmone! Glad the problem got solved.
*********** "Nothin' up my sleeve. . ." --Bullwinkle J. Moose
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Re: Sub rattle
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Joined: Apr 2007
Posts: 4,877
connoisseur
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connoisseur
Joined: Apr 2007
Posts: 4,877 |
OK guys so here is the deal... I still am having some sort of issue. It seems that the new amp/new driver/ rigging up the wire did not resolve my issue after all. Listening to a few bass heavy scenes the back of the ep500 seems to shake/vibrate/sound like it is rattling apart. I told axiom what is going on and that I am not even sure if there is a real problem since the sound is only during loud explosions/ect. They are sending my a completely new ep500 because They said they want to do some tests on my sub and know for sure if there is something wrong. There customer service is the greatest I have ever seen. If you call ANY other company and say, "I think I might be having a problem still but I am not sure." The customer service rep will most likely say, 'don't worry about it'. So I need to get som coax to sub connectors so I can use my coax cable and experiment with multiple subs for a day with my two subs
-David
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Re: Sub rattle
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Joined: Mar 2005
Posts: 7,463 Likes: 1
axiomite
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axiomite
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Posts: 7,463 Likes: 1 |
Bummer, terzaghi. Gotta give it to Axiom for taking care of their customers, though!
*********** "Nothin' up my sleeve. . ." --Bullwinkle J. Moose
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