For People Who Love Music On The Move - Four Masters

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is produced by a Hertz EBX-F20 flat box, which contains an 8in subwoofer and 10in passive radiator in a super slim enclosure, which fits snugly under the luggage compartment floor. Connecting to the vehicle electronics was made simple by the inclusion of an Audison bit Ten. This takes full-range speaker feeds from the BMW iDrive system and converts them into left channel, right channel and subwoofer outputs which are then fed directly to an Audison SR 5 amplifier. Although sounding highly technical, the system is simplicity itself and by utilising the talent of a FOUR MASTER, all the car owner need worry about is the final result. Functionality remains as it was before the installation was carried out with the exception of an added iPod interface that integrates seamlessly with the iDrive system and allows the existing on-board controls to be utilised for music searches and iPod control. The bit Ten contains a powerful digital signal processor capable of near infinite changes to equalisation and time alignment allowing the FOUR MASTER to set up the car for the sound that best suits the music their customers listen to. Brian has had two preset sounds set up to cope with the wide range of musical genres he frequently demonstrates. These include settings for acoustic/classical music and rock/dance and can be selected from a remote controller secreted away in the ash tray. Brian could not be happier with the result and exclaimed, “Given the restrictions I put on the FOUR MASTER, challenging them to give me great sound without any visual or functional changes to the vehicle, I could not be happier with the results and genuinely look forward to driving my music collection around!” Our thanks go to FOUR MASTER Highdown Car Audio & Security in Worthing for their excellent work: www.highdowncaraudio. Music 4 Driving Recommended by Brian American Head Charge - Just So You Know Foo Fighters - Everlong Slipknot - Vermillion The Deftones - Hole in the Earth Band of Skulls - Wanderluster Equipment List com Audison bit Ten - £299 Audison SR5 - £399 Audison VOCE AV 1.1 - £129 Audison VOCE AV 3.0 - £39 Audison VOCE AV-CX2WMH Crossover - £69 Audison VOCE AV-6.5 - £159 Hertz EBX-F20 - £199 iPod interface Skinz sound treatment Connection cables and accessories Approximate cost of entire system including labour: £2,000.00 22 Driving Sounds www.drivingsounds.co.uk Tel: 0800 652 5125
P robably the most important yet contentious part of a good audio system, subwoofers are almost a science in themselves, particularly for those with limited space. We take a look at some of the characteristics of a good subwoofer. Subwoofers Bass is crucial in the reproduction of all very important and your FOUR MASTER will not designed to and invariably lead to a musical genres. It adds presence, depth, be able to show you these features. much-shortened life. warmth, punch and excitement whether you are enjoying the kick drum in a piece of rock music, fast and funky synthesised bass lines in dance music or the low, low rumble of timpani in an orchestral piece. Traditionally, subwoofers are big (up to 24in in diameter) due to the overriding principle that the bigger the speaker the lower the bass. However, recent technological advances and researchers’ tireless pursuit of more space-efficient bass solutions has seen specialist companies produce far more compact subwoofers Power and impedance matching between amplifier and subwoofer are vital to get the best sound per watt from the combination of the two and also to protect both components from harm. This is made fairly simple as manufactures of amplifiers and speakers will quote the impedance of their products (typically 4 Ohms for automotive use). If you are using multiple subwoofers on a single channel of amplification however, then some science and maths has to be applied. Don’t be fooled into thinking that because you listen to a gentler genre that you don’t need bass. In most cases this is not true and good bass reinforcement will always bring realism and scale to your listening experience, with an extra slice of pure joy. If in doubt, trust your FOUR MASTER. He has knowledge of what subwoofer suits which purpose and if space is an issue, state this up front. Some subwoofer systems can be capacious, particularly when designed with high performance enclosures. even as small as 6in. The most common Subwoofer power output specifies the sizes in the car however, are still 12, 10 and 8 inches. Many large subwoofer cones are made of compressed cardboard which has been the weapon of choice for many years. However, they are prone to physical distortion when subjected to large sudden movements and so other materials have been sought to help add rigidity. These include lightweight super-rigid materials such as carbon fibre and aluminium and have also led to the manufacture of new composite materials. Bass requires a lot of energy and therefore subwoofers tend to have much larger magnets than full-range speakers do. This has a direct impact on the metalwork that supports the cone and magnet, known as amount of power it can handle and has the basket. The basket is also subject to no real large forces but must remain stable at all bearing on how times and have little or no resonance that loud it will be. It could compromise or interfere with the is important not vibrations of the cone. Just as important as to exceed this making the cone move quickly is the ability figure to prevent for it to stop when energy is removed. This overloading, requires a counter force to dampen the distortion and cone’s movement as quickly as it starts. This usually, untimely job is carried out by what is known as a death of the voice spider, which is a disc of corrugated fabric, coil. Power rating on card, metal or a composite of the three. an amplifier relates to The voice coil inside the speaker needs to be kept cool, so the best quality subwoofers will make special provision for this via strategically placed holes or airways in the base plate. Efficient and fast airflow in and out of the area containing the voice coil is the limit of the power that it can supply before running into distortion. This is important, as it is not only a power overload that will destroy a speaker but also, too much distortion. This will make the speaker move in ways it was Tel: 0800 652 5125 www.drivingsounds.co.uk Driving Sounds 23 PRODUCT FEATURE
Page 1 and 2: Issue Two £3.00 For people who lov
Page 3: CONTENTS Car Features We show you s
Page 6 and 7: I n this article, we explain where
Page 8 and 9: Masterful Mercedes A chieving a won
Page 10 and 11: One of the main differences between
Page 12 and 13: Natural Beauty CS 260.30 The Audio
Page 14 and 15: apart from the incredible sound is
Page 16 and 17: F or nineteen years, Source Sounds
Page 18 and 19: With Wave Diffuser Without
Page 20 and 21: Founding Partner of UK car audio eq
Page 24 and 25: Why a FOUR MASTER? FOUR MASTERS are
Page 26 and 27: John Kleis Towers - Definitely Not
Page 28 and 29: Digital Radio (DAB) in ANY Car EZi-
Page 30 and 31: voids behind the mounting positions
Page 32 and 33: A n audio system in a car will draw
Page 34 and 35: Heavenly Catering f D eborah Grech-
Page 36 and 37: Distributed in the UK by www.fourca
Page 38 and 39: Established in 1991 by Jeff Lunn in
Page 40 and 41: Now You See It, Now You Hear It! C
Page 42 and 43: eproduction in the vehicle. The DA1
Page 44 and 45: SPOTLIGHT ON FOUR MASTERS Highdown
Page 46 and 47: The Music Lover’s Guide to Car Au
Page 48: Love music on the move? You don’t

For People Who Love Music On The Move - Four Masters

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