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Driving Sounds - Issue 4 - Now Available
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FOUR MASTERS are all independent installers of high quality car audio systems with a common code of practice, which ensures first class service and high quality workmanship.

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Why you should buy a Car Audio System from a FOUR MASTER:

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FOUR MASTER News

New FOUR Car Audio Site Launched

16th February 2015

A brand new website for customers old and new!
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Driving Sounds Issue V Coming Soon!

16th February 2015

New issue of the UK's only specialist car audio magazine is on its way.
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Downloadable Driving Sounds

26th November 2014

Download the entire current issue of Driving Sounds (4) for just £3.50.
Get the PDF version here

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Latest Car Audio Article

My Car’s Got 17 Speakers!

July 28, 2015

Is this the best sounding car in the country? This picture shows a very small part of the dashboard of a VW Golf demo car built by FOUR MASTER supremo’s Source Sounds in Sheffield. The car is completely smothered in speakers. There are 100 voice coils (that’s the component that makes speakers move in and out) in this car and by some people’s understanding, this alone makes it the best sounding car in the country. I know this car and its creators very well. The car does sound absolutely awesome, but I probably wouldn’t enjoy listening to it on the move as it is not meant for that job. If you park it at a car show and turn it up, you can hear it sounding crystal clear – This is the job this car was built to do and, as with everything Source Sounds do, it achieves it in spades doubled and redoubled! Getting to the serious point we are hoping to convey, we are increasingly told by car owners that their audio system must be good because it has (insert erroneous number here up to 17) speakers fitted at the factory. This is what these unwitting car owners

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Back To The Music – Two Channel Audio Is Best

June 19, 2015

Are 17 speakers in your car truly better than four really good ones? We don't think so and explain why! Continue reading

Phasers On Stun

November 24, 2014

Phasers on Stun! This month’s final frontier is to the highly critical, planet phase. To kick off, we need to make sure you all understand how sound gets to your ears. Sound is basically the detection of movement of air entering our ears and creating sympathetic movement of the ear drum. The more violently the air is moved, the louder the sound and the more times per second that the air is moved backwards and forwards the higher the pitch of the sound we hear. All very simple if we strip away all the unnecessary scientific stuff going on!  The air movement is created by the cones of a loudspeaker moving forward and backward in response to an electrical stimulus. In the age of mono where a single point source generated the air movement, phase was not a particularly discernible issue but when stereo came along things went a bit phase critical. If you have two speakers generating air movement then they are going to affect each others ability to do this with absolute integrity. The best way to demonstrate this is to reverse the + and – connections on one of your speakers on your home stereo. Depending on

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Found in Space

October 15, 2014

Found in Space Look closely at the above image. Can you see a whole load of stars or just a vague homogenous glow? I hope it is the former as otherwise this entire post fails. Once more, I want to speak about separation in audio systems. This is a concept which many find extremely hard to grasp and is of total relevance as it is directly connected to the discernible difference between a good car audio system and a not so good one. But, rather than jumping in at the deep end as I am often accused of doing, I wanted to attempt to go back to first principles with the aid of a visual analogy of what I mean by “separation” and what it brings to audio pleasure. Much recorded music consists of a number of sounds, whether they be musical instruments, pieces of electronics or things being hit, blown, bowed or squeezed into making a noise. The combined effect of the hitting, blowing, bowing and squeezing should cause joy for the listener and can convey a story in the same way that words and pictures in a book or magazine do. However, unlike reading a book or enjoying

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16 bit vs 24 bit-depth audio

September 24, 2014

16 bit vs 24 bit-depth audio This topic is probably one of the most difficult to boil down for the lay person! Digital audio is a very complex and controversial business due to the apparent need to parameterise what is considered by many to be as psychological a phenomena as it is physics-based! An example of the battle digital audio pioneers still have on their hands is in the fact that continued AB testing of “golden-eared” luminaries still points to the possibility that although the limit of human hearing in terms of frequency response is scientifically proven to be around 20kHz, that analogue systems which will produce in some cases up to 50kHz sound better! It is necessary to put such unknowns to one side however, and have a pragmatic explanation as to why increasing the number of bits from 16 to 24 in a digital system is or could be desirable and the real world affect this can have on listening pleasure. Digital anything is all about the maths (note the “s” proudly displayed on the end of this word!) Digital signal manipulation is especially so and this can be quite handy in comparing parameters. As you will probably

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