Xstyle
Prominent Member
I have had NO problems in the last 2.5 years with my set-up, but the time has no come to add some cooling to it ... esp as I am thinking of upgrading the av receiver/amp to the Onkyo 875 which is a heat outputting monster!!
My cabinet space where this would go is:
530 (w) x 225 (h) x 600 (d)
Onkyo is:
435 (w) x 194 (h) x 460 (d)
There are 2 further shelves above that have kit on (and to the side, but that is pretty much partitioned off). Very little airflow at back, what space there is, is for the plugs and cables etc. It's not tight sealed at the back, but pretty much as good as, with a velcro backing. If I put holes into the back board, I would get light coming through from the room behind (garage) when that is in use. hmmm... (and glass fronted doors - pics in my sig)
I cant change the height and width of shelves, they are secure.
I can possibly do something about ventilation at back?
but dont want it open, as dust and more importantly, light, will get in and shine through the front where we sit in the living room and distract away from the TV.
Grills sounds like an option... if I can find some that are suitable.
and would they fit ok on the mdf back panel?
This VENT from B&Q is louvered, but would still allow light in...
Would this be a better option than holes covered with speaker cloth?
My AV cabinet is here:
(taken from my link in signature below)
Other info I have seen:
http://www.avsforum.com/avs-vb/showthread.php?t=884053
http://www.hometheatercooling.com/
http://www.coolcomponents.com/
http://www.triktags.com/html/fan_vent_panels.html
http://www.audioholics.com/tweaks/home-wiring-construction/heat-buildup-and-your-components
http://yampanet.com/
http://www.endpcnoise.com/cgi-bin/e/std/sku=nexus120mm_bw.html
http://forum.coolermaster.com/viewtopic.php?t=4360&highlight=cabinet
Any more input, and advice would be greatly appreciated!!!
Thanks!!
Xstyle
My cabinet space where this would go is:
530 (w) x 225 (h) x 600 (d)
Onkyo is:
435 (w) x 194 (h) x 460 (d)
There are 2 further shelves above that have kit on (and to the side, but that is pretty much partitioned off). Very little airflow at back, what space there is, is for the plugs and cables etc. It's not tight sealed at the back, but pretty much as good as, with a velcro backing. If I put holes into the back board, I would get light coming through from the room behind (garage) when that is in use. hmmm... (and glass fronted doors - pics in my sig)
I cant change the height and width of shelves, they are secure.
I can possibly do something about ventilation at back?
but dont want it open, as dust and more importantly, light, will get in and shine through the front where we sit in the living room and distract away from the TV.
Grills sounds like an option... if I can find some that are suitable.
and would they fit ok on the mdf back panel?
This VENT from B&Q is louvered, but would still allow light in...
Would this be a better option than holes covered with speaker cloth?
My AV cabinet is here:
(taken from my link in signature below)
It's your own risk of course, but personally I wouldn't put an 875 (or most other Onkyo amps) in that cabinet.
They get a lot of praise for their many features but everyone agrees they put out a lot of heat and that cabinet you have there isn't designed to handle it.
Just putting a few hole in the back isn't going to do it, you need to figure out a way to get some real airflow going if you want to put the 875 in there an exhaust fan would be the best way I guess.
I've stuck to an open hi-fi rack with a 320mm gap between the amp shelf and the one above it. Leaves plenty of room for the heat to escape with no build up.
Enclosed cabinets look good no doubt but you have to deal with the heat.
Alastair Collie said:Hi
Personally I wouldn't modify the unit as this will invalidate the warranty.
What you would need to do if there is minimal space is put some low voltage fans built into the back of the unit at the top. If you add a grill at the bottom of the unit then cool air would be drawn into the cabinet at the bottom and hot air pulled out by the fans. I'm not an electronics expert but I think you can get inexpensive PC fans and I believe from Mark at Onkyo you can drive these from the 12v trigger on the amp.
Regards
Alastair
Morning
I haven't done it myself but I know Mark from Onkyo mentioned you can drive external low powered fans from the 3.5m jack 12v trigger outlet on the amps. I believe you can set the amp so the 12v trigger is activated when the amp is switched which drives the fans. Unfortunately that is all the info I have until Mark gets back from hols next week. I have a feeling one or two forum members may have already done this.
Regards
Alastair
Other info I have seen:
http://www.avsforum.com/avs-vb/showthread.php?t=884053
http://www.hometheatercooling.com/
http://www.coolcomponents.com/
http://www.triktags.com/html/fan_vent_panels.html
http://www.audioholics.com/tweaks/home-wiring-construction/heat-buildup-and-your-components
http://yampanet.com/
http://www.endpcnoise.com/cgi-bin/e/std/sku=nexus120mm_bw.html
http://forum.coolermaster.com/viewtopic.php?t=4360&highlight=cabinet
Any more input, and advice would be greatly appreciated!!!
Thanks!!
Xstyle