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Old 04-07-2012, 08:20 PM
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Default Left channel MC 601 running hot?

Last night I noticed that my left channel MC601 was running much hotter than the right... I am not sure why. The MEN 220 has had the modification from McIntosh fixing the balanced issue and the MC601 has plenty of room to breath... (I did not notice the problem when the MEN220 was out the system but for several weeks but not sure.)

I wonder if I hooked up the REL G1 correctly? The G1 directions don't show an example for Mono blocks for the High level inputs. I wired the positive and negative G1 leads to the + - terminals of the left 601 amp and the remaining positive lead to the + terminal of right 601 (as the directions show for a two channel amp). This is the correct way..... right??

Does anyone have another idea of what the problem could be?
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Sonus Faber Amati Futura; REL G1; Olive 4HD; MC601 [x2]; MEN 220; MCD 1100; MC275 MkV; RGPC 1200C

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Old 04-07-2012, 08:24 PM
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I know my dealer DID NOT hook up the negative to G1 at the speaker output rather to a ground screw on the amp. Not sure if this is the same with the 601's. This was die to the design of the 1.2k's.

Jim
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Old 04-07-2012, 08:29 PM
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Quote:
Originally Posted by Still-One View Post
I know my dealer DID NOT hook up the negative to G1 at the speaker output rather to a ground screw on the amp. Not sure if this is the same with the 601's. This was die to the design of the 1.2k's.

Jim
Jim,

Can you use any screw on the amp?
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Sonus Faber Amati Futura; REL G1; Olive 4HD; MC601 [x2]; MEN 220; MCD 1100; MC275 MkV; RGPC 1200C

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Old 04-07-2012, 08:31 PM
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Jim,

Can you use any screw on the amp?
Josh
Not sure. They used one near the top rear fins.

Jim
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AMP's: Momentum Mono's
Pre-amp: D'Agostino
Digital: Meridian 808v3 & Meridian MC200 (SooLoos)
Analog:SME 20/3 , Audio Research PH 8, Benz Ruby
Speakers: Wilson Alexandria X2 Series 2
Cables: Transparent Opus Speaker & Interconnects - Reference Powerlink MM2x Power
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Old 04-07-2012, 08:37 PM
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Josh
Not sure. They used one near the top rear fins.

Jim
Ok I will disconnect the sub cables and see if it still runs hot... I bet I should have ground it to the chassis. The directions show on the two channel amp to ground to the - terminal of the amp.
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Sonus Faber Amati Futura; REL G1; Olive 4HD; MC601 [x2]; MEN 220; MCD 1100; MC275 MkV; RGPC 1200C

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Old 04-07-2012, 08:39 PM
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Josh it has something to do with how McIntosh designs their amps. The more enlightened here can tell you why. Something to do with the rails.

Jim
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AMP's: Momentum Mono's
Pre-amp: D'Agostino
Digital: Meridian 808v3 & Meridian MC200 (SooLoos)
Analog:SME 20/3 , Audio Research PH 8, Benz Ruby
Speakers: Wilson Alexandria X2 Series 2
Cables: Transparent Opus Speaker & Interconnects - Reference Powerlink MM2x Power

Last edited by Still-One; 04-22-2012 at 05:23 PM.
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Old 04-07-2012, 08:46 PM
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Josh it has something to due with how McIntosh designs their amps. The more enlightened here can tell you why. Something to do with the rails.

Jim
Oh I see what you are saying..... More to do with the McIntosh design. Jim Thanks! (this is why I love this forum!!) I am going up stairs now.

Does anyone know where I should mount the ground wire or does it matter?
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Old 04-07-2012, 09:22 PM
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Option B : I can use the MEN220's balanced OUT2 (Lo-pass Mono) and hook a balanced cable directly to the sub. If I do this I will need to check if I can still use the unbalanced cable from my HT receiver and the balanced cable from the MEN220...

But would still would prefer to use the high level input.
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Sonus Faber Amati Futura; REL G1; Olive 4HD; MC601 [x2]; MEN 220; MCD 1100; MC275 MkV; RGPC 1200C

Green items were all purchased used thru Audioaficionado's "The Marketplace" from other members

Last edited by jfray; 04-07-2012 at 09:43 PM.
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Old 04-07-2012, 09:47 PM
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Quote:
Originally Posted by jfray View Post
Option B : I can use the MEN220's balanced OUT2 (Lo-pass Mono) and hook a balanced cable directly to the sub. If I do this I will need to check if I can still use the unbalanced cable from my HT receiver and the balanced cable from the MEN220...

But would still would prefer to use the high level input.

Josh, take the black lead and attach it to the shield side of an RCA connector. Plug it into any unused input on the preamp. That should take care of it.

Wait is this is hooked into an HT receiver? If so, and the receiver maintains ground when switched off (almost all do), you don't need the black wire at all. The single-ended cable from the HT receiver is already providing what you need.

Perhaps you can shoot me a PM with the exact configuration and I can be absolutely sure on the best course of action

Last edited by metaphacts; 04-07-2012 at 09:51 PM.
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Old 04-07-2012, 09:57 PM
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Quote:
Originally Posted by metaphacts View Post
Josh, take the black lead and attach it to the shield side of an RCA connector. Plug it into any unused input on the preamp. That should take care of it.

Wait is this is hooked into an HT receiver? If so, and the receiver maintains ground when switched off (almost all do), you don't need the black wire at all. The single-ended cable from the HT receiver is already providing what you need.

Perhaps you can shoot me a PM with the exact configuration and I can be absolutely sure on the best course of action
Thanks Bill I will send you a PM.
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Sonus Faber Amati Futura; REL G1; Olive 4HD; MC601 [x2]; MEN 220; MCD 1100; MC275 MkV; RGPC 1200C

Green items were all purchased used thru Audioaficionado's "The Marketplace" from other members
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