High Velocity HVAC

Hi Stephen, low not high velocity is audio's friend. Ideally we want high airflow with the least amount of turbulence which is usually the result of high pressure. It is pressure that adds greatly to velocity. The rule of thumb is to go ducted and fave the ducts some 30 to 35% larger than standard and to have the ducts insulated. That way there is lots of cold or hot air flowing in without any whooshing. Hope this helps.

Buddy of mine has it in house, noticeably noisier that my standard HVAC

JackD201 said:

Hi Stephen, low not high velocity is audio's friend. Ideally we want high airflow with the least amount of turbulence which is usually the result of high pressure. It is pressure that adds greatly to velocity. The rule of thumb is to go ducted and fave the ducts some 30 to 35% larger than standard and to have the ducts insulated. That way there is lots of cold or hot air flowing in without any whooshing. Hope this helps.

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I agree with Jack.

in my HVAC installation I did a few other things to minimize the noise.
--HVAC is on the 'dirty circuit' AC grid panel in my barn along with the lights and 'dirty outlets'. I have a completely separate 70 amp service to a balanced isolation transformer to feed my listening system. so there is zero effect of the HVAC on the system performance.
--the air exchanger is mounted outside on the other side of my barn with three walls between it and my listening room. totally isolated.
--my air box is in the attic above the hallway outside my room. so it was not directly next to or above my room.
--the air box is mounted on a metal tray with rubber pad to minimize resonance transfer.
--I have three 90 degree turns in the duct work before it exited into the ceiling of my room to dissipate the noise, and the ducting was split into two separate runs (2 runs can substitute for larger ducts).
--those output vents are in the rear of my room in the ceiling, the returns are on either side of the front of the room near the floor which gives great flow and I can have 30 people in my room in the summer and it can cool it in a hurry but QUIET. and the air flow is from behind and above me and not into my face.
--with no music playing the only thing you can hear is the control module on the wall softly clicking on or off. any conversation or music of any kind zero notice even of those clicks.