I installed this on
Nissan Qashqai

Review
My friend had these and I was pleased with the effect, so this was the obvious choice I would go for in replacement for my car's woofer, which suffered from a distinct lack of bass. I looked at some other makes, but from reviews I found any savings in cost seemed outweighed by problems with reliability and service, so it was back to Hertz. It does the job - provides a solid bass to your bum (assuming you put it under the driver's seat). I generally have it set around half volume as this gives a nice sound/feel without making you want to take ecstasy and jump around a lot. Installation of any device like this is not simple - you need to dismantle substantial parts of the car interior to install it and run wires, and make solid power connections into the car wiring for it to work properly - so if you are not something of a car DIY person you'll probably need help or a professional install.

What I like
These woofers delivers awesome bass at desirable levels, in whichever way you want it to play.

What I do not like
Installation deemed tricky!

Review
I was an average audiophile, and had been recommended to get these Hertz DS 25.3 woofers for my ride. After procrastinating for some time, I decided to get them installed. Upon turning them on after installation, I got a goosebump feeling while enjoying the bass these woofers delivers - it was just so good to the ears. The bass aren't of so low, but the pumps and kicks are just fantastic! Mid and high tones delivery are excellent too! I call these my 'coffee' every morning since it just wakes me with its awesome kicking bass.

What I like
Excellent sound delivery; great kicking bass and undistorted mid and high tone sounds.

What I do not like
Slightly pricey.