run my rsd 600.1 at 1 ohm?

dkitt10 · Post by **dkitt10** » Fri Dec 07, 2007 6:31 pm

subject says all...do able?

Mastiff · Post by **Mastiff** » Fri Dec 07, 2007 8:30 pm

dedlyjedly · Post by **dedlyjedly** » Fri Dec 07, 2007 8:38 pm

I wouldn't recommend it. They may very well be able to handle that load, but I've never tried. Are you wanting to run it like that because you're trying to squeeze some extra juice out of the amp or because you already have a sub or subs that would load it to one ohm?

dkitt10 · Post by **dkitt10** » Sat Dec 08, 2007 9:34 am

wanted to try out my 12" RE sx on er DVC 2 ohm sub....

Mastiff · Post by **Mastiff** » Sat Dec 08, 2007 9:42 am

do it and report back !

dkitt10 · Post by **dkitt10** » Sun Dec 09, 2007 10:20 am

all in good time boys...need to make a ported box for her first...all in good time!!

1moreamp · Post by **1moreamp** » Sun Dec 09, 2007 2:34 pm

I have a question, or two ????

No I don't he he he

dedlyjedly · Post by **dedlyjedly** » Sun Dec 09, 2007 4:51 pm

Cecil, there's no load optimization circuits on the rsd amps. The rsd monoblocks make rated power at 2 ohm loads.

dkitt10 · Post by **dkitt10** » Sun Dec 09, 2007 6:29 pm

rsd 600.1 is rated at
425 rms @ 4ohm
650 rms @ 2ohm

worse cause ill run it at 4 but that's gay if perhaps the rsd could be stable at 1

the xenon amps give rated power at all impedances...

1moreamp · Post by **1moreamp** » Sun Dec 09, 2007 11:46 pm

Sorry I be running on empty too long, Your absolutely correct about the RSD series, my bad

dkitt10 · Post by **dkitt10** » Mon Dec 10, 2007 8:32 am

lol np bud

Post by **stipud** » Mon Dec 10, 2007 9:44 am

dkitt10 wrote:worse cause ill run it at 4 but that's gay if perhaps the rsd could be stable at 1

Why would that be "gay"?

First of all, you probably can't hear the difference between 425 watts and 650. The difference of 225 watts will amount to a ~1.5 decibel difference. At 4 ohms the woofer will be much more controlled, your amp and power system will be less stressed, so it will be more reliable and likely louder for transient notes.

At 1 ohm your amp will be stressed out, you will have to reduce the gains drastically to get it to perform without clipping, thermaling, or overloading. Your electrical system will be stressed... this means more flashing lights, and generally worse sound quality.

Try both, pick whichever one sounds best. Make sure you gain match them to approximately the same volume... if at 1 ohm it is substantially "louder", odds are you are clipping the hell out of your amplifier, which will cause it and your subwoofer to fail in short order.

dkitt10 · Post by **dkitt10** » Mon Dec 10, 2007 11:04 am

i figured id be over 1000 watts at 1 ohm...which i figured would be quite the difference over 425 watts...this isnt my dd

i use the 600 on my rsd 12 in a 1.8 sealed for DD

Post by **stipud** » Tue Dec 11, 2007 8:01 am

dkitt10 wrote:i figured id be over 1000 watts at 1 ohm...which i figured would be quite the difference over 425 watts...this isnt my dd

i use the 600 on my rsd 12 in a 1.8 sealed for DD

No, it won't produce more power at 1 ohms than it will at 2. It will TRY to, but the amp will have to cut it back and regulate itself to keep it from blowing up. This is why you get added current draw and heat, but not power, from running at 1 ohm.

The difference between 1000 and 425 watts is shy over 3 decibels. The rule of thumb is that every time you double your power or cone area, you gain 3 decibels. Double both and you get 6.

dkitt10 · Post by **dkitt10** » Tue Dec 11, 2007 11:40 am

okay so 4 ohms it is..thanks

do you have an experience with this woofer...how will it compare to the rsd 12

Post by **stipud** » Tue Dec 11, 2007 12:06 pm

dkitt10 wrote:okay so 4 ohms it is..thanks

Try it on both 1 and 4 ohms. You may like 1 ohm better, it all depends on how strong your car's power system is, and how well the amp reacts to the lower load.