#77842 - 06/17/07 02:03 AM
Hi pitch whine/shutdown
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Gunslinger
Registered: 04/20/07
Posts: 221
Loc: Minneapolis
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I just hooked up my 990 and 7700 today. The whole input configuration is a little tricky, as is trying to figure out how the remote works...
Anyway, I do not have any hum with the 7700 (using balanced cables), however when the amp shuts down, about 5 seconds later I get a whining noise in the right rear surround that lasts about 2-3 seconds. Its not loud, but it sure seems odd.
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Panasonic TC-P65S1 65" Plasma HDTV, Marantz AV 8801 Preamp, Outlaw 7700 Amp, Klipsch RF7 (X-over dean G modded) RC7 (X-over Dean G modded) RS7 CDT-5800C speakers, Outlaw LFM1 EX Subwoofer, Oppo BDP-93, B & O Turntable, Toshiba HD-A2, Sony CD & DVD 400 disc jukeboxes, DirecTV HD-DVR, PS2, PS3, Wii, Harmony one remote, Monster PowerBar 1200 for the TV, sub, PS3, HD DVD and Wii, Tripp Lite Isolation Bar for the Amp, Pre-Amp and other sources.
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#77844 - 06/18/07 02:08 PM
Re: Hi pitch whine/shutdown
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Gunslinger
Registered: 05/13/01
Posts: 121
Loc: South San Francisco, CA USA
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That's exactly what it is. I called support with the same question with my 755 and got this answer.
PS - I get the same whine with my 7700.
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Outlaw 976, Outlaw 7700, Pro-Ject Phono Box S
Sonus Faber Domus Grand Piano (F&C), Niles HDFX (Surr. & Rear Surr.), Outlaw LFM-1 Plus, Velodyne SMS-1
Sonos multi room audio
Video: Sony KDL-46V2500, OPPO BDP-103, TiVo Premiere XL4
2-channel: Outlaw RR2150, SF Concerto Home, Outlaw LFM-2
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#77845 - 06/18/07 03:59 PM
Re: Hi pitch whine/shutdown
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Gunslinger
Registered: 04/20/07
Posts: 221
Loc: Minneapolis
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So this is normal, nothing to worry about?
_________________________
Panasonic TC-P65S1 65" Plasma HDTV, Marantz AV 8801 Preamp, Outlaw 7700 Amp, Klipsch RF7 (X-over dean G modded) RC7 (X-over Dean G modded) RS7 CDT-5800C speakers, Outlaw LFM1 EX Subwoofer, Oppo BDP-93, B & O Turntable, Toshiba HD-A2, Sony CD & DVD 400 disc jukeboxes, DirecTV HD-DVR, PS2, PS3, Wii, Harmony one remote, Monster PowerBar 1200 for the TV, sub, PS3, HD DVD and Wii, Tripp Lite Isolation Bar for the Amp, Pre-Amp and other sources.
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#77846 - 06/18/07 04:19 PM
Re: Hi pitch whine/shutdown
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Gunslinger
Registered: 05/13/01
Posts: 121
Loc: South San Francisco, CA USA
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That is what I was told by Outlaw Support when I called for my 755(three years ago) and I trust that the symptom on my 7700 has the same root cause.
If you want a more definitive, 'official' answer, give the outlaws a call (or drop them an email). It'll cost you nothing and you'll have a documented answer straight from the horses mouth.
HTH
_________________________
Outlaw 976, Outlaw 7700, Pro-Ject Phono Box S
Sonus Faber Domus Grand Piano (F&C), Niles HDFX (Surr. & Rear Surr.), Outlaw LFM-1 Plus, Velodyne SMS-1
Sonos multi room audio
Video: Sony KDL-46V2500, OPPO BDP-103, TiVo Premiere XL4
2-channel: Outlaw RR2150, SF Concerto Home, Outlaw LFM-2
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#77847 - 06/19/07 06:37 AM
Re: Hi pitch whine/shutdown
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Gunslinger
Registered: 04/20/07
Posts: 221
Loc: Minneapolis
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From Scortt @ Outlaw; It is a capacitor discharge. It is not harmful and is normal. To me it just sounds kinda funny. I can always tell friends its the supercharged amp winding down 
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Panasonic TC-P65S1 65" Plasma HDTV, Marantz AV 8801 Preamp, Outlaw 7700 Amp, Klipsch RF7 (X-over dean G modded) RC7 (X-over Dean G modded) RS7 CDT-5800C speakers, Outlaw LFM1 EX Subwoofer, Oppo BDP-93, B & O Turntable, Toshiba HD-A2, Sony CD & DVD 400 disc jukeboxes, DirecTV HD-DVR, PS2, PS3, Wii, Harmony one remote, Monster PowerBar 1200 for the TV, sub, PS3, HD DVD and Wii, Tripp Lite Isolation Bar for the Amp, Pre-Amp and other sources.
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#77848 - 06/19/07 12:42 PM
Re: Hi pitch whine/shutdown
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Desperado
Registered: 04/09/05
Posts: 500
Loc: Maine
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I, too experienced a whine at powe-down. Was soon after receiving either the 755 or 7700. It went away after (can't remember) a while.
Maybe the tech-type guys can answer whether this means just "burning-in" with time.
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Living Room:
5.1 Surround and 4channel inline room
990/7700/6-KEF-107s/LFM1 x 2/ SMS Awaiting Trinnov
Millenium dts decoder;Digital Director
Players: Tascam CD01U/SonyCX455 x 3/DV955/BDP83
Old Sony 60" SXRD TV
Zone 2 (also liv-Room: listening to music while Mrs watches TV): Crown SL2 preamp/D40 Amp/Stax Headphones
My "Man-cave":
4 channel-only inline room. No TV (thank heaven)!!!
990/755/4-KEF 107s
Tascam CD01U/dts decoder/digital director
Alesis 16x4x2 mixer
Recorders Alesis HD24/ML9600/Crown CX844s/SonyDAT/Tascam DA38
Ham Radio Shack (KB1STH) ICOM/Yaesu/Drakes x 3
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