who has a 225 amp???

[MMATS COMP 10+ year member]

is it true that you can run it all day at .5 ohms mono??

I am looking at buying 4 of them and I want to make sure that it will work at .7 all day they say its stable down to .25 stereo and .5 mono but from what I have been reading online somepeople say that it cant be done

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[ss3079 5,000+ posts]

Assume you're talking about the Orion ?

They used to run all day at "200" x 2 @ .5ohm ... so I don't see what would be any different now / why they wouldn't at .7 //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

- Steve

 

[MMATS COMP 10+ year member]

yes I was talking about orion would it run at .5 mono?? they say it can run at .25 stereo

 

[helotaxi 5,000+ posts]

I have heard of a lot of people doing it. Cooling will be a major factor. Forced air cooling will be a must. Make sure you are running 4 ga power wire to the amp.

I have 3 of the middle series with the removable top plate. I won't load mine down below 1 Ohm mono, but that is mostly cause I don't want to take any chances with these amp. They are in perfect condition and irreplacable as far as I am concerned

 

[MMATS COMP 10+ year member]

thats what I was going to do just put some computer fans I have on them and just run 4 of them at .7 for comps and 2 at 1.4 daily on my 18" super

 

[helotaxi 5,000+ posts]

Because of the impedance curve of most woofers, they won't even see .7 ohms when you crank it at a comp. I wouldn't worry about them.

"A couple of computer fans" is not the best cooling solution, though. If you are going to go the computer fan route, fully enclose the amp and use the fans in a push-pull configuration to force air through the enclosure along the length of the cooling fins.