Thumping | Model 990 Surround Processor | The Outlaw Saloon

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#67858 - 04/20/08 11:01 PM Thumping
MeanGene Desperado Registered: 06/10/02 Posts: 524 Loc: Simi Valley, CA, USA	I am having an issue with my new 990. Each time I switch inputs or mute I get a thud through the system sounding similar to a tap on a microphone. Any ideas on how to trouble shoot this? I am using a 990 to an ATI 3005 using the balanced inputs. I also have bass management going from the 990 to the SMS-1 to the Sampson using balanced inputs. _________________________ MeanGene\'s Home MeanGene\'s DVD\'s
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#67859 - 04/21/08 03:33 AM Re: Thumping
Altec Desperado Registered: 01/06/08 Posts: 334	There are a lot of things which can cause this problem, not the least of which might be DC on your outputs or a defective muting circuit (which is supposed to block transients like this). Unfortunately, there is nothing you can do about it at home - see a technician or contact Outlaw.
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#67860 - 04/21/08 01:16 PM Re: Thumping
Daryl Gunslinger Registered: 04/21/06 Posts: 96	I had the same problem when I had the Model 7500 amp connected via balanced connections. I went back to the un-balanced connections and the thumb or tick went away. _________________________ Outlaw Audio Model 990 Outlaw Audio Model 7500 Polk Audio RTi150, CSi40, FX500i, PSW650 Sony KDS-55A2000 Onkyo DX-C390 Toshiba HD-A2 DirecTV HR20-700 Philips Pronto TS-1000 Pics of My System
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#67861 - 04/21/08 04:33 PM Re: Thumping
MeanGene Desperado Registered: 06/10/02 Posts: 524 Loc: Simi Valley, CA, USA	Do you think they can fix this through a firmware update? _________________________ MeanGene\'s Home MeanGene\'s DVD\'s
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#67862 - 04/21/08 06:18 PM Re: Thumping
Altec Desperado Registered: 01/06/08 Posts: 334	If it's a timing problem, probably yes. I doubt that is the case though.
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#67863 - 04/22/08 06:07 PM Re: Thumping
Lee Bailey Gunslinger Registered: 06/22/01 Posts: 86 Loc: Madera,CA.USA	Quote: Originally posted by MeanGene: Do you think they can fix this through a firmware update? What level of firmware are you currently at? _________________________ Current Setup: Samsung HL61A750 LED DLP RPTV Marantz SR5004 AVR / Outlaw 7075 Amp L/C/R: Ascend Acoustics 340M/C/M L&R Surrounds: Ascend Acoustics CBM 170 SVS 25-31PC Panasonic BD55K Blu-Ray Player Dishnetwork VIP722 HD/PVR.
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#67864 - 04/22/08 11:17 PM Re: Thumping
MeanGene Desperado Registered: 06/10/02 Posts: 524 Loc: Simi Valley, CA, USA	It came with 3.07 and I upgraded to 3.11. Like the new features but still have the thumping. After reading about a few users who switched back to unbalanced connections which solved the problem I am concerned that this is not a configuration problem, but one that is inherent with the 990 when using balanced connections. _________________________ MeanGene\'s Home MeanGene\'s DVD\'s
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#67865 - 04/29/08 05:57 PM Re: Thumping
jpk Deputy Gunslinger Registered: 01/30/07 Posts: 1	Have you resolved the problem yet? I had the same problem of thumping when muting or switching inputs when I upgraded to some modified Hafler amps. The problem was also there with a 2ch preamp. It turns out the the amps needed a capacitor input, shorting (muting) the dc input caused the problem. I'm using unbalanced RCA's. _________________________ jpk
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#67866 - 04/29/08 09:50 PM Re: Thumping
butchgo Desperado Registered: 06/22/07 Posts: 369 Loc: Southern Oregon coast	MeanGene, I am running my 990 with balanced connections to my 2200's and 7500 and I do not experience any thumping at all. I can change inputs and mute and it is deaqd quiet. I get the inital small click or pop when everything is first turned on but that's it. _________________________ Epson 3500 3D projector 93" Carl's Place Flexiwhite DIY screen Outlaw 976 Pre/Pro Outlaw 7500 for LCR & L/R surrounds 1- Emotiva Mini X-A100 for rear surrounds 2- Outlaw LFM-1 EX subs Oppo BDP-105 Blu-ray/DVD/SACD player Outlaw LCR (Snell Labs) for center channel duty Tekton Lore monitors L/R 4- Emotiva ERD-1s surround speakers Monster HTS3600MKII power center
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#67867 - 05/01/08 02:12 AM Re: Thumping
MeanGene Desperado Registered: 06/10/02 Posts: 524 Loc: Simi Valley, CA, USA	No, I still have the problem and I just bought a $3000.00+ amp not to long ago. I will get a different pre/pro before I buy another amp. _________________________ MeanGene\'s Home MeanGene\'s DVD\'s
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