Hertz
Energy
These "Energy" series speakers are probably one of their most popular products. These speakers are very affordable and out perform just about every speaker in their price range.
Mille
The "Mille" series is currently rated as being one of the top 2 speaker components by Car Audio and Electronics magazine. The other being Morel. These are significantly less expensive than any other speaker in their class. These are a great sounding set of speakers with superb build quality.
Individual components
This picture shows a unique product. A ribbon tweeter. These are great for building a perfect sound stage. The frequency response of these ribbons allow for the creation of fantastic imaging. Hertz sells a number of drivers by themselves which allows you to design your own custom set of components for your specific application.
Subwoofers
The new "Mille" series sub woofers deliver tight accurate bass with the ability to use a small enclosure. The new V cone technology really gives these subs an impressive look. These have a very high power handling with a very robust motor structure.