Marantz SR8200 Fan

Discussion in 'AV Receivers' started by James_SCEA, Oct 30, 2003.

  1. James_SCEA

    James_SCEA Agent

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    A question regarding my cooling fan:

    My current setup is with a Marantz SR8200 with two MA6100 THX Ultra Monoblocks for my mains. The sound quality in two channel stereo is simply awsome! I listen to my music pretty loud in 2 channel stereo. At around -5db to 0db, my cooling fan comes on in my receiver. My question is, why is the fan coming on if I'm using external Monoblocks?

    In Multi-channel stereo it comes on even sooner (since it utilizes the receiver's Center and Rear channel amps). My receiver sits on top of my component rack, so it has plenty of ventilation. I guess I wouldn't mind this so much if the fan were not so obviously loud. It is definately noticable in between tracks.

    Is anyone else experiencing this problem with the 8200 or 9200? If so, is the fan noticably loud? Any advice or info would be greatly appreciated.

    Thanx!
    [​IMG]
     
  2. John Garcia

    John Garcia Executive Producer

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    What cooling fan? There isn't one, AFAIK. If anything, the fans are in the 6100s.

    Also, if you are using monos, there is no reason why you should be generating that much heat (or any really for that matter), since the mains are not drawing any current.

    -5 is extremely loud, even with SACDs, which I typically only have about -10 (LOUD). I have let my system run for over 4 hours, loud, with 4 Ohm mains, and never once heard any fan come on.

    My 8300 is in a semi-open rack, with only 4 inches of cooling clearance above, no front or back, and perforated sides.
     
  3. James_SCEA

    James_SCEA Agent

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    John

    In fact the 8200 does have a fan. If you take a flashlight and shine it into the holes on the right side panel (where the heat sinks are), you'll see a fan deep inside. It's good to know that this is something that is not supposed to be happening though, the MA6100s don't have a fan.

    I was thinking that it may be because of the ADDC mode that the processing could generate some heat along with the preamp stage, but I disproved that theory running analog L/R from my DR6000 (HDAMs). [Which sounds great considering 96khz/24bit processing by the way; soundstaging is not quite as accurate as the 8200's Dual Differential 192khz/24bit DACs though.]

    It may be time to give Marantz a call. Any other advice or info would be greatly appreciated.

    Thanx! : )
    JC
    [​IMG]
     
  4. John Garcia

    John Garcia Executive Producer

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    There is some heat from the DACs, but it should not be enough to turn on a fan After 4 hours (stereo) the top, above the heatsinks is warm, but nothing I would consider abnormal. My PM7000, also HDAM, never even cracks a yawn after many hours of listening.

    I didn't think the 6100s had fans, but I wasn't sure (but then you would probably hear two...). I was thinking about picking up a pair for my mains as well, but the 8300 seems to be handling things well for now.

    What speakers BTW?
     
  5. James_SCEA

    James_SCEA Agent

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    John

    Thanks for the info. I've heard your PM7000 and it is definately impressive for an integrated amp. It's hard to beat HDAMs - they used those in their older Reference series, including the SR-14EX.

    I'm running Cambridge Soundworks Newton MC300s for my LCR and Newton S300 multipoles for my rears, along with a P500 dual 8inch sub. They're 8 ohms and rated at about 150 watts.

    I left a message with a Tech Specialist @ Marantz. Waiting for a call back - I'll miss my receiver [​IMG]

    JC
     
  6. John Garcia

    John Garcia Executive Producer

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    Wow, I would not expect there to be an issue with those speakers, they certainly don't seem like they'd be power hungry. The 8200 should be more than enough for them. My mains are GR Research A/V-2s, 4 Ohm, 91.5dB efficient, and the 8300, which should be the identical amp section as the 8200, doesn't seem to mind. I have not received my center, which will be basically identical to the mains just shielded, and having all 3 up front concerns me, which is why I am considering at least a pair of 6100s.

    Have you checked your speakers lately? Maybe you have a damaged driver in one of them?
     
  7. ChrisDixon

    ChrisDixon Second Unit

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    I was quite surprised when my SR8200's fan came on for the first time (especially since I'd had the thing for about six months without ever hearing it). This was during the most intense scenes of We Were Soldiers cranked up very loud. Put it this way, my 8200 does not have external amps, is in a cabinet with no side ventilation, and the fan has come on maybe a couple of times in a year of constant use, and that was only when 5 amps were being pushed very hard. My guess is that either you have a faulty unit, or you have heat coming from somewhere else. Does the top feel very hot to you when the fan comes on?

    Chris
     
  8. James_SCEA

    James_SCEA Agent

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    Chris,

    Ironically, the top of the unit does not feel very hot at all when the fan seems to come on. If your 8200 is inside of your a/v cabinet without side ventilation and doesn't give you this problem (without external amps) - then I would definately have to agree. I'm still waiting on the return phone call from Marantz.

    I've felt receivers get a lot hotter than mine without the use of a fan altogher. Especially the Halo Series from Parasound, those heat sinks are really effecient but the top of the casing gets hot!

    Thanks for the info!
    JC
     
  9. ChrisDixon

    ChrisDixon Second Unit

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    Yes, I completely agree. The time I remember it coming on that I mentioned above, the top of the unit was very hot. There was also a previous thread (I think on this board) where some others said that theirs had never come on, or only under the most extreme circumstances. Good luck!

    Chris
     

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