We are a company based in the South East of the UK in Essex
supplying car audio, car performance and tuning parts, plus
more. We have been trading for over 10 years and have great
technical expertise for our products.
Born out of the increasingly demanding challenges of modern automobile technology and the HELIX-typical pursuit of intelligent solutions, we made the progressive redesign of proven universal speaker systems our mission. The result: our innovative HELIX COMPOSE platform that, according to the motto "developed inside the vehicle, for the vehicle", combines classic universal speakers with the advantages of vehicle-specific systems. Innovative materials and the latest technologies paired with smart, practical engineering - the best of both worlds in harmony: high efficiency, fantastic sound quality and enormous dynamics that fit in any vehicle. HELIX COMPOSE - universal speakers evolved.
The i3 coaxial systems give you everything you would expect from a great 2-way system: A first-class sound experience that, thanks to the use of high-quality materials and its particularly smart engineering, conveniently finds its way into the automobile. All components harmonize perfectly and form an ideal team with our HELIX and MATCH amplifiers, guaranteeing maximum performance and power output at all times. Furthermore, we implemented our new, mechanical technologies with a clear focus on safety during connection and operation for the purpose of creating ideal conditions for the integration into the vehicle with maximum compatibility.
HELIX COMPOSE equals smart engineering and accordingly implements highly efficient 3 Ohm technology, that perfectly harmonizes with all HELIX and MATCH amplifiers and at the same time allows a clearly perceptible plus in efficiency and maximum sound pressure.
With the innovative "Cenosphere" coating, hollow spheres are incorporated into a polyamide layer that is applied to the cone. This process increases the stiffness and also optimizes its internal damping. The result is an exceptionally stable yet lightweight cone that offers outstanding precision in sound reproduction.
All HELIX COMPOSE i7 and i3 speaker baskets are made of a high-tech polymer composite, which has been additionally reinforced with glass spheres. The result: maximum stability with minimal self-resonance, while also eliminating flux modulation of the magnetic system and maximum resistance to thermal influences. Last but not least, this allows for much more compact basket dimensions and thus simplified installations in cramped installation conditions.
The 0.75" / 20 mm tweeter is equipped with an innovative titanium dome that combines outstanding stability with low moving mass and high inner damping as well as enormous thermal resistance - perfectly made for brilliant and compression-free treble reproduction.
FlexMount is a mounting system based on specially developed adaptor rings, allowing the installation of COMPOSE FlexMount speakers in an almost infinite number of vehicles. Thus, the universal loudspeaker effortlessly becomes a vehicle-specific loudspeaker, that can be easily installed in the original installation position of the vehicle in an acoustically optimized way with the matching FlexMount adaptor ring.
Our innovative ProConnect terminal is the new industry standard: A professional, automotive connector, allowing the safe use of conventional speaker cables, while also being ideally designed for connection via flat plug with our WireKits, offering maximum flexibility in the design of the sound system upgrade. Furthermore, the connection is interlocked, offers reverse polarity protection and is electrically and mechanically highly stressable.
Our WireKits realize the connection of HELIX COMPOSE coaxial speaker system to the original wiring harness in the most comfortable way. With manufacturing according to the high standards of the automotive industry, these arrestable adaptor cables meet all requirements for the harsh environmental conditions that installers are facing in vehicles every day.
| Power handling RMS / Max. | P | 100 / 150 Watts |
| Frequency response | 60 Hz - 25,000 Hz | |
| Impedance | Z | 3 Ω |
| Sensitivity | SPL | 92 dB @ 2.83V / 1m 88 dB @ 1W / 1m |
| Outer diameter | ø | 165.0 mm / 6.50" |
| Installation diameter | ø | 142.0 mm / 5.59" |
| Installation depth | 60.7 mm / 2.39" | |
| Midbass | ||
| Impedance | Z | 3 Ω |
| DC resistance | Re | 3.1 Ω |
| Resonance frequency | Fs | 72 Hz |
| Mechanical Q factor | Qms | 4.02 |
| Electrical Q factor | Qes | 1.04 |
| Total Q factor | Qts | 0.82 |
| Compliance | Cms | 466 μm/N |
| Equivalent air volume | Vas | 11.5 L |
| Force factor | B*l | 3.8 Tm |
| Cone area | Sd | 133 cm2 |
| Moving mass | Mms | 10.4 g |
| Mechanical resistance | Rms | 1.17 kg/s |
| Voice coil diameter | ø | 25 mm |
Voice coil winding height | 10.5 mm | |
| Max. linear excursion | Xmax | +/- 3.2 mm |
| Tweeter | ||
| Voice coil diameter | ø | 20 mm |
| Features | ||
| Tweeter | Titanium dome and neodymium magnet | |
| Midbass | Paper with Cenosphere coating, ProConnect terminal | |
| Crossover | Integrated, 6 dB highpass | |
Big Sounds Low Skirts is a bricks and mortar car performance & modification shop with its own on-site fitting bay and technician located in Essex in the South East of the UK. This makes us best placed to help with any aftermarket mods or upgrades you may be looking for. Whether it be a dump valve or upgrading the entire audio system in your car we've got you covered.
We've almost finished our new showroom so if you're local or passing feel free to pop in and have a look/chat as we'd love to see you.
We also host occasional breakfast meets here where like minded enthusiasts can come and grab a bacon sandwich or a coffee while admiring each others cars. Typically once a year we'll hold an open day where the manufacturers such as Vibe, Audison, Edge, Hertz, Pionner, Kenwood & Alpine to name but a few come down with their show cars and latest products, this is always a fab day so feel free to look out for the dates on our facebook page, just search Big Sounds Low Skirts.
With over 15 years trading from this location we have become the biggest Performance and car audio shop in Essex. We are not a bedroom seller looking to make a quick buck, we are a devoted team of enthusiasts with a real passion for this industry and get just as excited as you when a new product comes to the market.
We supply car audio, car performance and tuning parts, plus more from a multitude of manufacturers with new items being added daily.
We are an authorised UK dealer / re-seller of every brand we sell and stock.
Full UK registered company and VAT registered
We take great care packaging every item to ensure safe shipment to you.All of our items for mainland UK addresses are either sent using Royal Mail, DPD or DHL. If the item is coming direct from a supplier then the courier or delivery method may vary.Please note - For items where the address is not classed as "mainland" for courier delivery (such as BT, IV, HS, high AB numbers, Channel Islands etc) then we reserve the right to charge extra carriage costs due to the increased cost to ourselves.
Genuinely faulty goods will be replaced or money refunded, however we must be advised of any faulty goods upon receipt of the item.It is the customers responsibility to pay for and ship the item back to us if they are simply no longer required or ordered incorrectly. We give a 1 year warranty on all goods unless otherwise stated - such as ex-demo item which may only have 3 or 6 month warranties.Please note that whilst a lot of our items have 'free' postage, this does not mean that it doesn't cost us money to send the items to you. Therefore we reserve the right that if you have ordered the item incorrectly or no longer want the item we will at our discretion minus the following amounts (based on normal mainland UK addresses, non mainland and non UK maybe more) : Items sent by Post - £3.95 Items sent by Recorded Post - £4.95 Items sent by courier 1kg to 10kg - £9.95 Items sent by courier OVER 10kg - £11.95Item MUST be returned exactly as they were sent to you, we cannot accept items back if you have fitted or attempted to fit the item, this is especially the case for wheel spacers, suspension, car lighting, speakers and subwoofers, as they can no longer be resold as new to another buyer.We do not offer a try before you buy service on items, therefore it is the buyers responsibility to ensure the item is fit for purpose before attempting to use / fit the item.
We accept payment by: Credit or Debit Card & Paypal.
Unfortunately we are unable to accept Amex or Diners Cards.
We warranty and represent that the goods are as described in our listings. We specifically disclaim any implied warranties of title, merchantability, fitness for a particular purpose and non-infringement.Customers should satisfy themselves that any item choice made is suitable for their intended purpose or use.Please note that we are a UK based company selling products that have normally been sourced from UK manufacturers and distributors, therefore it is YOUR responsibility to check that the product is suitable for use outside the UK. We cannot be held responsible if the product is not suitable for use outside the UK.We are an authorised dealer / re-seller / agent of all of the items we sell.