300 watts RMS enough for a sub?
 

I am looking to add a sub woofer to my FRS OEM system...for now. I plan on going with a single 10in in a sealed box, .75cu of space. I've been shopping around online but before I commit and purchase I was hoping some others could chime in. I'm just looking for bass/lows that I can feel/hear well enough without distorting the music or being insanely loud. I'm hoping 300 watts RMS should be enough and if anyone has thoughts on certain products would be great. Been out the sound game for awhile now. Thanks!!

300wrms is plenty for a single sub to compliment music. After hearing my girlfriends 8" 250wrms slimline unit, I struggle to see why you would need anything else.

Depends on several factors, mainly around driver efficiency and enclosure design. Assuming the latter will be optimal for the particular sub, perceived loudness of a sub can vary by a factor of 400% or more with the same power depending on efficiency.

Back in the old days it was all about high efficiency drivers, low xmax and large/ideal enclosures. I've still got some 15" subs which are 94dB efficient, and are only rated at 300W RMS but will be louder than the modern day equivalent which will have maybe 20mm xmax, only 86dB efficienct and burning up 1kw or so.

Bottom line is.. pick a sub and get an appropriate amp for it. Don't under-power a sub and this will most likely lead you down a bad path of clipping and the impending doom of burnt voice coilsl

How can under powering a sub hurt it? People say this, but it makes no sense.

Because such folk tend to run the amp into distortion/clip.

You cant hurt a sub by underpowering it..... as for 300w being enough, yes it should be as long as the sub is rated for that as well. Also make sure the box for the sub is actually correct for it.

A proper tuned ported box is still gonna get more for your money out of 300w tho. But if you want sealed thats fine as well, just dont choke the sub down.

Get a pwk design and those 300 watts will serve you well!

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I always go for sealed box. They always sound much better then even the best ported boxes. Porting just makes the sub make way more noise, at the cost of quality.

A 300W amp for a 300W sub does not make a good match.

BTW, thanks for completely ignoring me about that MiniDSP.

Speakers (voice coil) don't like low frequency square waves with a high amplitude.

I've got about 1200w RMS and I must admit, it sounds DAM good at low volumes where there's a just a hint of bass. 300w RMS is more than enough for this car.

Unless you're a bass head ...so it probably also depends what you're coming from. It's similar to a turbo - car's slow, you want a turbo, you get it, your car feels super fast, then after a while you want MOAR POWER! I like having the extra power there so I can still hear the bass driving on the highway with the windows down.

www.crutchfield.com They are your friends. The heaven of audio.. Call their hotline or chat with them online for any questions. There customer service is amazing, best service I ever dealed with. I can't wait until they update their products to the BRZ/FRS because I still can't find matching audio products that will be vehicle specific.

Brands I like are JL Audio and Rockford Fosgate I feel their products are high quality and look really nice compared to others.

Thanks for the quick responses! I'm currently looking at the following for the box, sub and amp. Anyone got advice as too if this will be a decent setup. I've looked at the specs and everything seems to fall into place. Thanks again!

Sealed box-
http://www.integrityconcepts.net/frs...rder-sale.html

Sub-
http://www.crutchfield.com/p_107DXI1...11#details-tab

Amp-
http://www.crutchfield.com/p_130GMD9...34#details-tab

depends on the sub but most have rms ratings between 250-400rms.