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#420382 - 09/19/16 10:11 PM Axiom LFR DSP+ADA1000 amp random noise problem
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1030
Loc: Lost in the great wide yonder
Out of the blue, my LFR1100 speaker are making a loud hissing banging nose for 10-30min on there own. The Anthem pre-amp is turned off and there is no source feeding the DSP anything. It just out of the blue starts to make a real racket that lasts for about 10-30 minutes then goes away.

I thought it was the Sub Woofers that were having an issue as about 3 weeks ago I heard this owful racket but had no clue where it was coming from. by the time I got downstairs into the media room and got to the speakers the problem went away. So I put it up to fluke. Then it happened again the following week so I just turned off the power to the Subs as I have not yet got around to running the photo 3.5mm 12v power lead around the room. Then this afternoon it happened again. it clearly is the DSP I think as that was the first thing I turned off and the noise went immediately away, so chances of it being a defect in the amp is slim.

They are about 2 years old so I imagine that the speakers and dsp are still under warranty. What should I expect from Axiom to get this fixed?
_________________________
Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A

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#420383 - 09/20/16 01:03 AM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
Mojo Online   content
connoisseur

Registered: 01/21/07
Posts: 4915
Turn the DSP off, unplug it and then turn it back on. Leave it like that for 24 hours. If the demons are still in it after that, Axiom will likely ask you to send it back for factory exorcising.

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#420409 - 09/22/16 06:35 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1030
Loc: Lost in the great wide yonder
I ended up calling Axiom and Deb was none the wiser on what to suggest. She has said that Andrew will be getting in contact with me. The speakers are still burting into noise, so I just have to leave them turned off all the time now when not in use and remember to turn the DSP back on as there is not any 12v switch for the unit.
_________________________
Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A

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#420424 - 09/23/16 08:05 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
2x6spds Offline
connoisseur

Registered: 03/16/02
Posts: 3143
Loc: CA, USA
RF? Radar signal from a local airport? ELF naval broadcasts? Alien encrypted communications?
_________________________
Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.

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#420603 - 10/03/16 09:53 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1030
Loc: Lost in the great wide yonder
Well. It turns out that Axiom doesn't have a clue as to why this randomly happens. The only suggestion that I got was to disconnect the pre-amp from the DSP and see if the problem persists.

BUT as this is a random occurance that has happened 3 times in a 2 month time span, I fail to see what this is going to tell me, other than trying to watch TV or a movie with my front speakers disconnected really sucks.

The problem has so far only occured when the pre-amp is turned off. I figure that I just have to get my 12v trigger hooked up so i can just turn off the AMP. While i am at it, I think i will get a 12v triggered relay so I can turn on/off a set of power outlets so my DSP along with the two Amp One/A can get powered on and off with the trigger as well.

Guess Andrew taking so long and giving me nothing to work with to figure out what is causing the issue made my decision not to upgrade to a bigger ADA amp easy. If Axiom is not serious about supprting their customers, then little reason to support them buying new stuff.
_________________________
Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A

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#420605 - 10/03/16 10:34 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
2x6spds Offline
connoisseur

Registered: 03/16/02
Posts: 3143
Loc: CA, USA
Random events are very difficult to troubleshoot. They are by nature transient and unpredictable. Try another DSP, see if it cures the problem. Since everything in the signal path after the source is Axiom made, I expect you will get the help you need from Axiom.
_________________________
Enjoy the Music. Trust your ears. Laugh at Folks Who Claim to Know it All.

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#420616 - 10/04/16 05:10 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
Ian Offline
President
connoisseur

Registered: 03/13/01
Posts: 1184
Matt,

What Andrew asked you to try in the PM he sent you was to disconnect the input cables from the pre-amp to the DSP, at the DSP, without turning the DSP off the next time you hear the noise. This will tell us if problem is upstream from the DSP or not. When you turn the pre-amp off it is actually only going into standby mode which is activating a muting circuit in the pre-amp. We just want to establish that this muting circuit is staying active.

Also, is the noise is coming from one, two, three, or all four channels of your LFRs?
_________________________
Ian Colquhoun
President & Chief Engineer

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#420627 - 10/05/16 11:49 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
MatManhasgone Offline
connoisseur

Registered: 05/06/14
Posts: 1030
Loc: Lost in the great wide yonder
I guess I was hoping that there was some "oh that is caused by xxx' moment. For me as it is a random occurrence that so far has only happened when I am not using the equipment with everything turned off apart from the DSP and the ADA amps (as I had not run the wire for 12v trigger).

The noise is very loud when it does happen, and at 3am it doesn't go down to well. I am going to guess as Andrew doesn't seem worried, it's not that my DSP is going to suddenly burst into flames and burn the house down, I can assume it's a random thing.

I gather if the amp is turned off then the speakers won't make any noise, and even iff the DSP is generating random noise it won't affect me, my speakers or my families happiness as the sound won't come out of the speakers.
_________________________
Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A

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#420630 - 10/06/16 05:56 AM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: MatManhasgone]
Mojo Online   content
connoisseur

Registered: 01/21/07
Posts: 4915
I would suggest you work with Axiom to locate the problem. You are 2 years into your warranty which means if something is busted, you can get it fixed for free. That includes shipping both ways IMO because you paid a tidy sum for your Axiom gear.

Three years into my Audiobytes the amp developed a problem and I neglected it and now I have no one but myself to blame. Well, that's not quite true. I blame a certain individual with the initials of TC.

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#420640 - 10/06/16 11:12 PM Re: Axiom LFR DSP+ADA1000 amp random noise problem [Re: Mojo]
fredk Offline
axiomite

Registered: 12/06/07
Posts: 7786
Loc: Canada
Originally Posted By Mojo
I would suggest you work with Axiom to locate the problem.

This. If you want 'don't give a damn', go talk to your local bank about, well, anything. If you want good customer service and a resolution, work with Axiom. This product is at least in part Andrew's baby. He cares.
_________________________
Fred

-------
Blujays1: Spending Fred's money one bottle at a time, no two... Oh crap!

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