Fi audio ssd on 1000 watts?

[Bob_345]

anyone know if you could power an 18 inch fi audio ssd on 1000 watts without the bp power? it has a 800 wrms but i dont know if the max rating is just a bit more that 800

[Bob_345]

anyone here know?

[spooney]

If it was clean unclipped output you may be able to get away with it. Personally I would just try to shoot for the 800 watt rating. If your amp is bigger than that you can always turn the gain down a bit to get closer. I'm sure the sub would handle 1k for a while but Fi put that 800rms figure on it for a reason. The sub's life will be decreased with excessive power.

[chris661]

I'd say go for the 1000W one, because then you'll always be cautious, and the amp will never be pushed to clip. If you used an 800W amp, you'd think "it's Ok, it'll never cook this speaker", turn it all the way up, which will clip it, putting large amounts of DC into the output, resulting in more like 1500W RMS output power, which will cook the speaker instantly.

[spooney]

Another consideration you should think of is if its going into a sealed or ported box? Sealed will handle the power better. Ported you may find that the sub doesn't even like 800 rms although with an Fi sub I think you would still be safe. I have a 15" Fi Q subwoofer and it sits in just over 3 cubes ported.Sub is rated for 1000rms. I run a memphis 16-ST1000D on it(rated for 1100 rms at 1 ohm) and after jammin on it for a while it can get stinky on certain songs.If it were a sealed box I don't think I would have to worry about that. I take it easy on the sub though. I don't run full tilt for more than 20 to 30 minutes. I think the power rating is pretty spot on in my case.

[Bob_345]

Originally Posted by spooney

Another consideration you should think of is if its going into a sealed or ported box? Sealed will handle the power better. Ported you may find that the sub doesn't even like 800 rms although with an Fi sub I think you would still be safe. I have a 15" Fi Q subwoofer and it sits in just over 3 cubes ported.Sub is rated for 1000rms. I run a memphis 16-ST1000D on it(rated for 1100 rms at 1 ohm) and after jammin on it for a while it can get stinky on certain songs.If it were a sealed box I don't think I would have to worry about that. I take it easy on the sub though. I don't run full tilt for more than 20 to 30 minutes. I think the power rating is pretty spot on in my case.

alright thanks for the help il just try to keep the gain low enough to be safe

[Top Shelf]

Definetly use as big of an amp as possible. In pro audio we recommend 1.5- 2 times the "rms" value for good headroom and less clipping which = less blown subs... (though we do use compressor/limiters and solid gain matching). Ported boxes have the advantage of reduced ambient box temp via the port,usually you can smell the VC epoxy melting before it begins to sag or distort. Not so much with a sealed box. In my line of speakers I get the port to "blow" across the magnet structure to further aid in VC cooling. Non of this matters if you are going for SQ as sealed boxes have much better transient response. Good luck.

[Glowbug]

Originally Posted by Top Shelf

Definetly use as big of an amp as possible. In pro audio we recommend 1.5- 2 times the "rms" value for good headroom and less clipping which = less blown subs... (though we do use compressor/limiters and solid gain matching). Ported boxes have the advantage of reduced ambient box temp via the port,usually you can smell the VC epoxy melting before it begins to sag or distort. Not so much with a sealed box. In my line of speakers I get the port to "blow" across the magnet structure to further aid in VC cooling. Non of this matters if you are going for SQ as sealed boxes have much better transient response. Good luck.

The problem is, 12VDC-based power has become so cheap, n00bs think you have to have that 3kW on tap, when a common sense approach to the volume structure would save many, many soft parts from destruction

Happens on the car audio boards all the time, people take the manufacturer's RMS recommendation as the minimum power level they need, whether or not they need it.