Silent fan on Crown MA3600VZ

[baldrick]

If it's doable maybe I'll give it a try

I know it's ideal solution, but than again, I will not be running it on full power for hours like it was meant, I will only be useing it for my subwoofers at moderate levels. Maybe you will ask why I bought it then... the reason is quite simple, I was looking for a K2 but there are not many for sale in Norway, so when I found the 3600 I went for that instead

I've checked and it seems like MacroReference and CT1600 share the same fan, so maybe that is what I should try IF I will try replaceing it On the other hand, maybe I will just keep it in the next door room

[subwoof]

it also will NOT FIT - they are different size frames.

No means no. I know what I am talking about here...

here are pics of *just* a few of the crowns that are here - the 2K and 10K monoblocks along with all of the "D" series are not yet inventoried.

[baldrick]

it also will NOT FIT - they are different size frames.

No means no. I know what I am talking about here...

OK then I thougt you meant you wouldn't advice it but it was doable Looks like you have quite some experince with Crown so I guess I'll just have to trust you on this one even if I don't like it

[subwoof]

*if* it was one of the less jampacked PB or PT amps I would say to get a small 40VCT 250ma transformer and use it to run the LV reg section and put a 600 ohm 10 watt resistor in series with the fanformer and that would work.

BUT BUT the 2400 and larger macrotech amps are just to busy inside and the 3600 has problems with heat even with NO signal / load so you are SOL.

Crown sold a series called geodyne in europe - one is a 750 watt/ch at 4 ohm that you CAN easily do this trick. It's a barebones MT2400 with one power transformer instead of 2

Or do a search for a techron or tecron 7560 / 7570 / etc. it is an industrial monoblock amp that is about 2K into a 2 ohm. It's fans are 2 speed and it's a great sub amp. Check with liquidators, machinery auction places or medical equipment recyclers.

sub

[timc]

Thats a large amount of Crown power

[subwoof]

This is.

Each of the smaller ones are 10K, the larger ( dissasembled for now ) are 15K. A pair of the larger ones have enough power to blow the fusible link on the power companies transformer down the street.

but they would get mad.

They are also great spot welders for the precious metals industry and my favorite, worm shocking.

Put 4 ground rods in the side yard, connect to the amp and give it a 5 to 3000hz sweep at full power right after a rainstorm. Everything underground is in for a ride esp if you put a little salt on top of the mole runs.

Mole Fricasse

[louped garouv]

SUBterranean signal experiments?

Put 4 ground rods in the side yard, connect to the amp and give it a 5 to 3000hz sweep at full power

[hjames]

Be very careful - thats how you call the Sand Worms of Arrakis -
you are certainly no Muad'Dib, my friend ...

Put 4 ground rods in the side yard, connect to the amp and give it a 5 to 3000hz sweep at full power right after a rainstorm. Everything underground is in for a ride esp if you put a little salt on top of the mole runs.

Mole Fricasse

[subwoof]

I am more worried about the iron 6" water main that is right in the middle. it's possible to induce a voltage or current powerful enough to send signal to the neighbors houses.

So If I can make their water heaters into receivers, what should I say?

"meter man"
"here kitty kitty"
"knock three times"
"I..buried..paul"
"take me to your leader"
"we all live in a yellow submarine"
( need to send at 6 hz carrier though )

it could get real fun and nobody would be the wiser.

bad thoughts bad thoughts.

[SMKSoundPro]

Wasn't this one of Tesla's patents? Ground current tranformation.

[robertbartsch]

SMK:
I heard there are a few volcanos going off in Alaska.

...stay safe!

[SMKSoundPro]

SMK:
I heard there are a few volcanos going off in Alaska.

...stay safe!

Thanks Robert! We're safe. There are volcanos always going off in Alaska. We are the most active earthquake zone on the planet. But no one notices because no one live out there on the "ring of fire."

A little ash from our volcano across Cook Inlet from downtown Anchorage. No big deal.

[boputnam]

NO!!!

a Crown MacroTech 3600 NEEDS THE FAN!!! to create the low voltage to power the "preamp" circuits!!!

Scotty, this is a really great post. Informed and informative.

Raising the bar...

[hjames]

Yep - I just wonder how this will play with our members who seem intent on redesigning Crown amps to work outside their original design parameters.

Subwoof excepted, of course.
He's an EE and specially skilled at such stuff!
(He's good, I've seen his Ungar workin'!)

Scotty, this is a really great post. Informed and informative.

Raising the bar...

[subwoof]

Just wait until summer...and you thought an amplifier with 8
outputs had thump. wait until there's 88...

And the original parameters were 0 to 100Khz down to .25 ohm
running on 3 phase so I am playing *inside* those parameters.

I plan on a fully adjustable DSP inside the chassis with a single phase supply.

And only 3K or so into 8 ohms.

And yes, quiet fans. very quiet.

sub

ps: note the speaker lugs. Banana that...