8" Woofer Kef PSW-1150 REPLACEMENT or DIY HUGE magnet. Condition is Used. But technically less used than what I'm currently using, a pair of KEF HTB2s.

I couldn't fix the Amp and couldn't figure out how to open up sub without accidentally damaging the box so I got another HTB2 instead and figured I'd just see if anyone needs a fresh driver for a project sub or a replacement.

KEF are pretty much the Apple of HiFi. Every update has its own reason for existing which is what makes me such a super fan I have 3 KEF setups, the IQ90s, the 3001SEs with the stock stands (my personal favorites, and you'd be surprised how many agree when they compare them with my Ltd Edt midnight velvet black LS50s.

Typicslly you'd be better off getting a sub from a company that just does subs since usually the sub to a set is just a repackaging of the mains with the same drivers.

KEF on the other hand make all their drivers in house and have always been on the cutting edge of driver design. Check out the recent K62s which is totally be interested in if the price weren't so steep.

I had an HTB2 matched with my 3001SEs, they were originally designed for the XQ series and were updated and refined for the 3001SEs which would be KEFs chance to audition all the new driver and cabinet designs for the the LS50s and the Blade.

This driver was paired with my IQ90s with their distinctly 90s sound. After the XQ series came the IQXs which had a paper woofers. The IQ90s were released after with all new drivers introducing the composite woofers and the tangerine horn loaded tweeters to prepare for the Muon, Lamborghini of KEFs. The driver is so solid I bet you could kick it without causing any damage, the front is woven composite while the back is paper wool composite giving the new driver more rumble and punch.

The original XQxs featured paper come woofers that sounded more like mid woofers and they simply couldn't make them any larger.

For the HTB2s they want with an 8 inch flat long throw woofer with a rear cone to allow the HTB2s to be thin enough they'd fit under your couch when placed on their three feet.

This driver is to the cube series which didn't need to be thin so they maximized the rigidity by adding a woven composite layer over the front which doped the driver allowing for it to be larger and to be tuned much lower. You can see both working in tandem on the MUONs which you can tell are really just the Reference 208s + their matching subs but with the drivers mounted sideways on other sides. You can see the evolution from the 70s 108s to the 80s 208s which were speaker and so they managed to refine the driver down to 8 inches and proudly forward firing.

This driver is KEFs classic 208s and Muon Era with warm punchy bass that's fast as a whip. Ever since they migrated to aluminum magnesium their new woofers are distinctly colder and unfortunately don't seem to refine their LG woofer in any way to complement its range like they did from the 3001 series and prior. Between my IQ90s which are floor standards with 2 paper woofers, I found I didn't really need a sub there anyway, while the paper HTB2s added a smoothness to the LS50s that made them all the better. I suspect the reason why they went all aluminum magnesium now is for the same reason they went all boxy: to cut costs.

I'd say having their house sound from the 90s and their modern sound both shine in their distinctive ways.

this things is so well constructed it plays a linear sweep while resting on a couch cushion. it has an amazingly hefty oversized magnet and it's built like a tank they and their sister company Celestion are the leading driver designers on the planet with KEF making consumer drivers while Celestion makes professional drivers for things like Marshall amps so they often just work on drivers together for use in pro and consumer settings.