how much room do I need on shelf for McCormack amp to breathe?

pglbookpglbook Posts: 1,648
edited February 18 in Electronics
I just got a McCormack DNA .5 Deluxe amp and am now also looking into getting a new entertainment unit for my equipment.

I located a nice wooden console that may work but need to know how much room I need to have on a shelf to let the McCormack amp breathe (do these run hot?).

The McCormack amp is 19" wide x 15" deep and 5 7/8" tall.

The entertainment unit I am thinking about getting has 3 shelves and the bottom shelf is split into two 20" halves. The McCormack amp has heat sinks running down both sides of it. There would only be a 1/2" of space on each side of the amp. Would that be enough? There would be 4" of space above the amp but it would be a tight sqeeze on each side (the unit has 10" of space between bottom shelf and middle shelf; also the unit is 18" deep) The shelves are enclosed in the unit (it may be open in back but no on sides).

The bottom shelf is the only shelf in the unit that would work for the amp because the 2 upper shelves do not have enough space between the shelves for an amp.

It is hard to find units that can accommodate stereo components and this one is a possibility. It is just a question if there will be enough space on the sides of the amp. I know a rack would be best but a rack would be tough to fit along my living room wall, along with 60" TV and SDA speakers, etc. The TV would go on the top of the entertainment unit I am considering.

Comments

  • F1nutF1nut Posts: 42,146
    Heat rises by convection, 4 inches of top clearance really isn't enough.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • pglbookpglbook Posts: 1,648
    F1nut wrote: »
    Heat rises by convection, 4 inches of top clearance really isn't enough.

    Thanks. I thought the top clearance would be ok. How much top clearance should I have at a minimum? Also, what about the side clearance?

  • EmlynEmlyn Posts: 2,375
    Manual for the DNA 0.5 says four inches clearance on each side and six inches above and behind. Air flow is really what's needed or heat will just build up inside the cabinet. Most of the heat is going to come upwards off the heat sink fins.

    http://www.mccormackaudio.com/manuals/dna05.pdf
    1. Polk LSiM707, 704C, 703; Dual SVS SB2000 subwoofers; Marantz SR7011 receiver; Parasound A23 amp; Oppo 205; Sony 65" 4K TV; FIOS; PS Audio Power Plant Premier; MIT S2 cables
    2. JM Labs Electra 920.1; Sonic Frontiers Line 3 Preamp; Classe Model 25 amp; Sony HAP-Z1ES; Oppo 105D; Music Hall MMF7 and Acoustech phono pre; PS Audio Power Director; MIT S1 Cables
    3. Polk LSiM703; Parasound JC2BP and A21; Sony 48" 4K TV; Wyred4Sound DAC 2; Oppo 203; Squeezebox Touch; MIT S3 cables
  • pglbookpglbook Posts: 1,648
    Emlyn wrote: »
    Manual for the DNA 0.5 says four inches clearance on each side and six inches above and behind. Air flow is really what's needed or heat will just build up inside the cabinet. Most of the heat is going to come upwards off the heat sink fins.

    http://www.mccormackaudio.com/manuals/dna05.pdf

    Thanks. The manual was the first place I should have looked; I did not think about that. Thanks again. Much appreciated. I will have to continue looking for another console or rack because the one I was interested in will not allow enough ventilation for the amp.
  • ClipdatClipdat Posts: 6,958
    pglbook wrote: »
    Thanks. The manual was the first place I should have looked; I did not think about that. Thanks again. Much appreciated. I will have to continue looking for another console or rack because the one I was interested in will not allow enough ventilation for the amp.

    The McCormack DNA-125 amp I tried barley got warm to the touch. Could always try it first in your current setup, and if you're noticing temps higher than you're comfortable with, then start looking at new racks.
    "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • tonyp063tonyp063 Posts: 649
    Another option.
    What are your thought on active cooling?

    It may be possible to fit that solution in the rack you like.
    And it's way better than just convection currents. Low speed & high volume should be pretty noiseless.
  • F1nutF1nut Posts: 42,146
    Keep in mind that there are ideal operating temperatures for components. Gear generally sounds better after it has warmed up, so cooling fans may lower the temperature too much.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • Gerres26Gerres26 Posts: 478
    F1nut wrote: »
    Keep in mind that there are ideal operating temperatures for components. Gear generally sounds better after it has warmed up, so cooling fans may lower the temperature too much.

    This has always been my worry
  • ClipdatClipdat Posts: 6,958
    edited February 21
    Even if the air is being moved away from the amplifier in a rapid fashion, the components inside are still reaching their "ideal operating temperature". It's just that the heat is being dissipated away more quickly. I wouldn't be concerned.

    That being said, I'm generally not a fan of active cooling in regards to stereo gear though, unless it's in an enclosed rack or closet.
    "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • F1nutF1nut Posts: 42,146
    I don't know about that. If the fan is pulling cool air up from the bottom through the enclosure I doubt the components would reach their ideal operating temperature.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."


  • daddyjtdaddyjt Posts: 920
    I have the DNA 225, and it never gets beyond slightly warm, unless driving the Infinity Kappa 9s hard...
    Too much stuff to keep track of.

    Currently enjoying: Legacy Focus 20/20, McCormack DNA 225, Bill D C1, Oppo 105
  • zeppage2zeppage2 Posts: 187
    AC Infinity AIRCOM T8
  • delkaldelkal Posts: 552
    Emlyn wrote: »
    Manual for the DNA 0.5 says four inches clearance on each side and six inches above and behind. Air flow is really what's needed or heat will just build up inside the cabinet. Most of the heat is going to come upwards off the heat sink fins.

    http://www.mccormackaudio.com/manuals/dna05.pdf

    If the DNA 0.5 is not known to be an egg frier it sounds like McCormack is being kind of conservative. Remember the 80's when we stacked everything on top of each other? Or a Pro rack?

    Looking at pictures the face plate is much wider than the cooling fins. Is that where you get your width measurement? If so the heat sink grills look to be a few inches narrower and are oversized. And its only 100 watts. There are plenty of 100 watt amps out there with no cooling fins at all (or they are internal). Do you normally listen at max volume for hours?

    I wouldn't put this in an small enclosed space but if your rack is open in the back you should have plenty of air circulation.
Sign In or Register to comment.

Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!