MarK IV Silent Fan (europe)

Zorshelter · Jun 9, 2009

Hi!!

My mark IV fan is a bit too noisy and I'd like to know if I can replace it with a silent one, the amp is a european version (220v) but the fan is a Howard 115v, 16/14A, 12,11W, if any of you already changed it would you tell me what I need (brand, model, store..) thanks a lot :wink:

jazzmonk · Jun 9, 2009

I've been meaning to ask this too. I have the US model, but believe it's the same fan and power rating.

Has anyone managed to convert a super silent computer case fan (120mm and typically 12V or 5V) for use in the mark iv?

tony777 · Jun 10, 2009

The fan runs on 117 Volts even if the amp is running on 230 volts, so if you want a quieter fan, look for the 117 volts versions.
I have a Globe motor 115V fan with part no A47-B15A-15T1-100, 6 watts and 27 dBa in my C+, and you can only hear it when it's quiet around you. I don't know who sells them though.

A 230 Volt fan would probably work, but you'll never know, it might be that it wouldn't run at all.
To convert a 12V fan into 117 V will not work, the 12v fan will probably burn out in seconds, or run at incredible high speed, and be extremely noisy.

Zorshelter · Jun 10, 2009

Thank you Tony!

I hope I'll get more references from others who changed their fan because I get comments when I record things with this amp and I'll record in August, it'll be too hot to run the amp without the fan so I've got to find something...

tony777 · Jun 10, 2009

Check out Orion fans, they have some fans that might work for you.

http://www.orionfans.com/html/oa109.html
The one with part no OA109-AP-11-3 might be the one you need.

Zorshelter · Jun 11, 2009

Again thank you Tony, I'm gonna check them out :wink:

Zorshelter · Jun 11, 2009

I don't know if this is possible, but my Mark IV is in a rack and I was wondering if I could power 2 fans from the original "fan plug", one under the preamp and one extracting air on the back of the rack.... is this possible if I find 2 5-6A fans....