Hertz Centro Coaxial Speakers Reviewed

Fab Feb!

Welcome to February Driving Sounds clubbers. It occurred to me recently that the ability to hear music at low levels in a car is one of the best things about an aftermarket audio upgrade. An extended dynamic range allows drivers to enjoy a much broader church music-wise. The not-so-hidden-track of the month (click image above) is a great example of a tune that "ordinary" listeners would be unlikely to get to the end of as it is very quiet to begin with. If they did, the sonic explosion at the climax (3mins) would probably wrench cardboard from plastic as the cheap and nasty factory speakers self destruct under the pressure! - A similar frustration is regularly experienced by lovers of orchestral music. Classical music will have very quiet passages followed by dramatic string or brass stabs with accompanying percussion. Unless you have experienced an aftermarket audio upgrade you would probably be very selective (restricted) in your musical choices!
This month we look at this aspect of music on the move from different angles. We hope it gives you food for thought.

100 Reasons

Hertz Cento Speakers Examined
Driving Sounds looks into this entree into a new range of speakers from Hertz. Cento sits between the highly successful Hertz Energy range and the excellent Mille Pro's. At £149.99 a pop, these coaxials should have plenty about them. We threw a pair into some boxes of indeterminate dimensions so we could give them a listen with pleasing results - Have a sneaky peek at our findings! We hope you find it useful when considering your next coaxial speaker upgrade: 


Top Five Driving Sounds

Below is a list of the top five tunes we used for testing the Hertz Centro speakers in our sneaky peek above. We used more than this but these were our favourites!

If You Wanna Be A Woman - Ibrahim Maalouf
All The Madmen - David Bowie
Jig Of Life - Kate Bush (Live)
February Stars - Foo Fighters
Yellow - Laila Biali

If you would like to submit your own Top Five, we would be thrilled to hear from you. Send artist and song info and a brief description of your current system to: editorial@drivingsounds.co.uk

Over Sensitive About Car Audio?

Dynamic range starts with speakers. This measurement that regularly features in specification lists is far more straight forward than some and is fundamental to matching speakers with the right amplifier. Watts can be mischievously misleading when attempting to get the highest volume level possible from a pair of speakers. Have a look at our investigation into the subject here:https://www.fourmasterscaraudio.co.uk/caraudio/sensitive-car-audio-speaker-sensitivity-explored/


Skinz For Sins

Simply put, dynamic range is the difference between the quietest and loudest sound we can hear. Unfortunately, many cars are noisy to begin with. In this case, in order to achieve a dynamic range that would help us to appreciate all the nuances of the music we hear we would have to offset the noise inherent in the vehicle to begin with or..........make it quieter!
We have written extensively in the past about how that can be achieved and once again we would draw your attention to an article that appeared in issue 2 which can be viewed for free here:  https://www.drivingsounds.co.uk/articles/driving-sounds-issue-7/sound-treatment/
Once your car has been made quieter you can start to really hear what a pair of Hertz Centro can do!

Dynamic Range 

There are many belief systems when it comes to the best medium on which to listen to music. Many are based on science others based on experience. Using scientific evidence to support statements on how good things sound doesn't really go all the way for me. I have studied the science of sound and although it gives me an appreciation of how fantastically complicated it is to capture a sound and reproduce it perfectly, I am no closer than anyone else to being able to state with any certainty the scientific properties required to do this. This may seem an odd thing for me to admit right here but, it is really by way of warning. Music is not science, it is art. Once you get into listening to music rather than listening to sound, the science becomes less relevant. However, certain properties can change perception and enjoyment for some people and this is where a little science can be helpful. We often knock factory fitted stereo systems for sounding crap and interestingly for me, along with low bit rate MP3 both will always spoil my listening. It could well come down to dynamic range, or that may just be a tiny part of it.

I am fond but not overwhelmed by the performance of vinyl. I can always hear static pops and crackles and a certain safe mid-range predominance and lack of dynamic range (60-80dB is typical) which can adversely affect my enjoyment of a song. However, many fans of the medium will listen to nothing else - probably because they are very familiar with it.  What we are always struck by in our travels is the effect a good system has on people's immediate reaction. As well as "clarity" we often have people pointing out things, even instruments, that they have never heard in a recording before - The squeaky bass drum pedal on a Led Zeppelin track or the physical movement of a pickup selector switch on John Lennon's guitar or a previously totally unheard triangle in a Peter Gabriel track. These things suggest that the quality of the equipment you listen to is important and therefore, we continue in the face of such resistance, to recommend that people upgrade for their own pleasure. Yes, along the line somewhere, someone is making money out of you but not everything comes down to pounds and pence sometimes there are deep-rooted emotional needs that are merely covered up by a "can't do", "can't afford" or "can't be bothered to" attitude!

We completely appreciate your bother!

Until next month, do take care.