Hertz Mille Pro Car Speakers
Hertz Mille Pro car speakers have been around for a while now. However, they remain peerless at their price point. Designed to be able to run a system subwoofer free for those without the space to fit one, when incorporated into a full system they shine especially brightly.
The Woofer
There are many technologies old and new that combine to make these speakers perform so well. For instance, the Boundary Free surround featured on in the woofers (MP 165.3 and MP 130.3) removes the constraint of a traditional surround. This allows for more air to be moved as the cone is less constrained. A more linear response results as well as an extended bass performance. When combined with the Hertz V-Cone technology, dispersion is also very wide, essential for car speaker positions in modern cars. A die-cast Aluminium alloy basket creates a rigid resonance-free basket.
Tweeter
The standard 25mm tweeter (MP 25.3) features a Tetelon soft dome cone for a rounded yet accurate performance. A centre tuning duct minimises back waves and allows the tweeter to operate at lower frequencies. A powerful neodymium magnet assists with the efficient exchange of air between cone and a rear load damping chamber. This results in a very low resonance that further helps with lowering the crossover frequency point.
Crossover
Although these speakers work best when run actively, the supplied passive crossover (MPCX 2.3) work incredibly if the system needs to be run actively. 1mm pure copper wire wound low resistance inductors provide the woofer with just the right frequencies with a 12dB/octave slope. Bi-metal polyester film capacitors and an air-coiled inductor provide high frequencies to the tweeter. This has a two-step 2dB level switch allowing a level of personalisation.
How Do They Sound
I had the pleasure of listening to a set of these in a Hyundai i20. They were connected to an Audison Prima AP 4.9 bit amplifier and also in the system was an Audison Prima APBX 8 AS. The first thing I did was to turn the subwoofer off, via a remote control mounted in the car. The car was stationary which can give a false impression of a system, as road rumble, engine and wind noise will all have a cancelling effect on bass and takes a subwoofer from being desirable to essential! Anyway, it was the speakers I was particularly interested in.
I threw many tracks at the speakers before making any judgements at all. This is called my “pleasure test”. A general listen to Hi Res tracks of all genres streamed from Qobuz. I am not listening critically at this point, simply throwing music at the system to see if anything dramatic stands out and warming everything up (including my ears!). I was immediately impressed by the flexibility of the speakers. They handled everything from classical to acoustic folk to electronica to rock without any particular bias to a certain genre. They were indeed a very pleasurable listen for me.
Read More
However, it can sometimes be useful to have a more specific analysis of what the speakers do well and also not so well. The speakers cost £319.99. Although not desperately out of the way, certainly compared to home audio speakers, some deeper description of what they do is useful. A deeper analysis of specific tracks can be found in the official article here: https://www.drivingsounds.co.uk/articles/archive/issue-one/hyundai-hi-fi
I would strongly recommend the Hertz Mille Pro car speakers to those looking for a true Hi-Fi experience in the car. However, it is important to stress that only you know what you like in terms of sound, so do find a stockist and get a demonstration.
