KICKERKicker 47KBRW8 Car Audio Tuned Passive 8" Radiator for Sub Box Enclosure New

Very well product, I have this in a dual 10in sealed box. With a single shallow kicker. Does it the lows a little but not the low lows

Was skeptical on these working after reading other reviews. But, still tried going with a passive that was 1 size bigger than the sub to make up the difference of the sub being a long throw. And it, once again, worked perfectly! Kicker quality still pulled through! I've always used the passives from China because they're sold with frames that already have the baskets cut out. That way there's no more mounting depth needed than the thickness of the wood they get screwed into. Was excited to see Kicker is selling them! now. For maybe $20 more it's worth the quality put into them.

Made my shallow mounts subs sound way deeper

It doesn't seal well to the box, and vibrates like crazy and all I have is one 800 watt sub in the same box. Definitely not worth the money, I'm actually returning it.

Used to add extra thump in a small enclosure for a 8” ct sounds 400rms sub. Definitely worth every penny if space is an issue. Keep in mind these are tuned in the 40s so don’t expect them to sound great on the lower notes, that’s what the 10 or 12 PR is for. I listen to all genres so it’s ok for me to sacrifice the lower notes under 35hz. A little pricey but we’ll worth it for the right scenario and setup.