qtx Subwoofer Filter for Hi-Fi & PA Loudspeaker Systems 600W

used in conjunction with a pioneer S-SLW500 passive subwoofer, a box made by Sourcingmap (158mm x 90mm x 60mm Waterproof Plastic Enclosure Case DIY Junction Box), a gluegun, some copper cable and 8 spade terminals.Note : This subwoofer is stupidly cheap at Richer sounds (£5) because it's a very poor design (it's frequencies cut of is around 1.2KHz???)I trialed this on a normal speaker first and the drop in high frequencies was as one would expect/hope. This filter adds around 0.6 Ohms of imedence which is no big surprise, the main thing is, it corrects the subwoofers bigest design flawSo for about £40 all told I now have a pair of awesome subwoofers correcting the shortcomings of a baseless set of bookshelf speakers (wired to a second channel on the amp). Happy days!

If your getting full audio through your subwoofer and not bass only this is what you need.

Good product, worked straight out of the box

1st order damaged ,free replacement with next day delivery .2nd order damaged! 3rd time would only offer a refund.

heavy and well made thank you!

I bought this originally because I bought a 1100 watt car subwoofer for my sound system in my room which was currently 650 Watts. Buying this dramatically increased the subwoofers output and made it more powerful. Had lot of complaints from the neighbours. This is very simple to wire too!

I Fitted these to my 12" passive bass bins and it worked great.Product is basic but worked as it should

Great item Puts the sound of the sub woofer in perspective. Would recommend it to anyone who needs to boost the bass quality on an average speaker