Great pics SDS. What is the soundlevel of it when it fully is operational? Did you use silent fans or is that of no use in that casing?
I'm having actually the same question ...
Testing / 'burn -in' time,when fixture will be fully completed and operational ready ,
will give a definite answer ..
Still the Fan speed / power is adjustable ..
(Voltage regulator 6.8- 13.3 ..Tried with PWM ,but these two-wire Sunons used ,due
to Auto-restart fuction ,did not operate with PWM control.
So ,I've made a LM 2576 adjustable switching voltage regulator
(custom etched pcb/ 10A 80mH inductor /SB560 Schottky as free-wheeling diode/2200 uF 50V 105C
+ 22uF Tantalum as output caps ,and LC ripple noise filtering at output .4A max )
.A 12 position rotary switch -with 11 pretty nice' clicks '- adjusts Fan speed/power .
'Superficial' Tests done showed that ......it goes from almost non-audible operation up to relatively loud ....
But with lid open...And placed on a bench /stand ,not hanged on air .
All four fans used are the
Sunon MEC 0251V1 A99 .
5.4 Watts each ( @ 12 V ) .They feature Magnetic Levitation Tech and magnetic bearing tech (VAPO )
Dust-proof /oil-free.Pretty powerful . (
3100 rpm /
108.2 CFM @12 V /
44.5 dB
@ 12 V )...
Cheers.