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-   -   Big Chassis Amps / Rack Installation? (https://www.audioaficionado.org/showthread.php?t=44911)

RaceCarDriver 01-19-2019 11:21 AM

Big Chassis Amps / Rack Installation?
 
Has anyone installed the MC303 and 1.2/1.25KW big chassis amps in a rack? I see Middle Atlantic has 7U and 8U rack shelves available that are 20” deep. And they appear to have custom faceplates for the MC303. I have an email out to them but finding actual pictures of the big chassis Macs in a rack is proving to be harder than I thought.

Thanks!

cdobson 01-19-2019 11:40 AM

I have 1.2kw racked - using quadraspire. Hard to find affordable audio racks that hold that kind of weight. Love the racks - Ivan got me over the line on these.


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SCAudiophile 01-19-2019 01:56 PM

Quote:

Originally Posted by cdobson (Post 949752)
I have 1.2kw racked - using quadraspire. Hard to find affordable audio racks that hold that kind of weight. Love the racks - Ivan got me over the line on these.


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Paul at Adona Corp will make custom platforms and racks that will hold any weight and size amp...

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chrispleasant 01-19-2019 07:50 PM

I have and had to modify rack slightly


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Charles 01-20-2019 05:30 AM

I own (3) 1.25KW's. They generate substantially more heat than did my 1.2's which almost never got hot. While I wouldn't say they were inefficient, I would never put a 1.25KW in a rack. Even at low levels of watts they generate noticeable heat. It's one of the first things I noted regarding the differences between the 1.2's and the 1.25's.

____________________
Charles
Amps: McIntosh 1.25KW’s (3)
Preamp and DAC: McIntosh D1100
Sources: McIntosh MCD1100 SACD player, MVP881 BR player, MVP851 DVD player, MR87 tuner, Marantz 510LV Laser Disc player, ASUS laptop USB (JRiver Media Center 23)
Speakers: Wilson Audio Specialties Alexx
Sub-woofer: Wilson Audio Specialties Thor’s Hammer (1) and Wilson Watch Controller
Cables main system: Audioquest Wel Signature speaker cables and IC’s; Dragon power cords (8)
Sub-woofer system: Audioquest Redwood speaker cable; Wolf IC and Hurricane power cords (2)
Power conditioners: Audioquest Niagara 7000 (1) and Niagara 5000 (2); (4) 20-amp lines

Macuser 01-20-2019 08:22 AM

To each his own but I wouldn't rack a pair of those monsters either. Besides the heat issues I would think it would also make any cabling changes all but impossible.

Levitator 01-20-2019 08:58 AM

Quote:

Originally Posted by cdobson (Post 949752)
I have 1.2kw racked - using quadraspire. Hard to find affordable audio racks that hold that kind of weight. Love the racks - Ivan got me over the line on these.


Sent from my iPhone using New Forum mobile app


Same racks for my 1.2kw’s and very happy with them as well...

Masterlu 01-20-2019 11:55 AM

chrispleasant... Welcome to AA! :wave:

RaceCarDriver 01-20-2019 02:41 PM

My 303s hardly get warm, even when playing full tilt. Surprised to hear how much hotter the 1.25s are over the 1.2s.

mtroo 01-20-2019 02:48 PM

I have my 1.2kw on a pair of HRS amp stands. The modularity of the HRS systems is awesome. The HRS is a forever stand, I hope. I can see no reason I would ever change it. One can easily swap out different struts for different heights, components. The weight of the equipment is a non-issue. The cost, maybe not so much. But there is a reason they are used so frequently at the high end shows. One and done.


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