The Art of Sound System

You most likely listen to music every day on your commute to school, work or while driving to places. But have you ever wondered what is inside the device that makes possible for us listen to music?

A speaker driver is an individual transducer that converts electrical energy to sound waves, typically as part of a loudspeaker of car audio speaker or even of a tiny speaker inside your headphone. Attached to the apex of a loudspeaker cone you find a voice coil (consisting of a former, collar, and winding). When it comes to winding, the actual wire employed in voice coil winding is almost always copper (95 percent), with an electrical insulation coating, and in some cases, an adhesive overcoat.

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Copper wire provides an easily manufactured, general purpose voice coil, at a reasonable cost. Where maximum sensitivity or extended high frequency response is required from a loudspeaker, aluminum wire may be substituted, to reduce the moving mass of the coil.

While rather delicate in a manufacturing environment, aluminum wire has about one third of the mass of the equivalent gauge of copper wire, and has about two-thirds of the electrical conductivity. Copper-clad aluminum wire is occasionally used (in 5 percent of voice oil winding), allowing easier winding, along with a useful reduction in coil mass compared to copper.

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Some system designs may benefit from the longer Xmax if the system uses extremely long excursions, as may  the case be competition vehicles making high distortion 2 second SPL runs. The longer coil windings keep more turns of wire in the magnet gap at high excursion.

The aluminum wire, with its larger cross section area, is not as efficient as copper. A copper wire coil will pack more turns of wire into the magnet gap and results in higher energy over the operating Xmax of the coil. Well designed enclosures usually give better performance with the more efficient copper windings in both sound quality and output.

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The power handling differences between copper and aluminum are negligible IF both wires are using the same coatings and same adhesives systems. Aluminum will have more surface area to dissipate heat, but takes more power to reach the higher efficiency of the copper coil, in subwoofer applications. In midrange/tweeter applications, the lighter aluminum wire can have significant impact on high frequency performance where moving mass dominates.

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Debates on whether use copper or aluminum has been ongoing for decades; we posted an article explaining the debate here.

Shanghai Metal Corporation is leader in Ultra Fine Rectangular Enameled Copper Wire which widely used in voice coils, moving coils, printer coils etc. We pride ourselves in excellent quality products with competitive pricing and prompt delivery. We also offer alcohol soluble enameled flat copper wire and alcohol soluble Enameled copper-clad-aluminum round and flat wire. For our full list of products that we offer check out our website here. Be sure to join the conversation in our LinkedIn groupFacebookTwitter and Instagram. Try also our new mobile application by scanning the QR code below.

You can also read more articles by our team at SMC:

OLDEST METAL OBJECT RECENTLY FOUND IN MIDDLE EAST

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THE TRUTH BEHIND THE COPPER MESH ROOF BUILT BY JOHNNY DEPP IN THE MOVIE TRANSCENDENCE

WHO DOESN’T WANT TO LOOK FOREVER YOUNG?

COPPER FOR BIRTH CONTROL

WHAT’S THE BEST: COPPER OR SILVER WIRE CABLE FOR YOUR HEADPHONES?

DO YOU KNOW WHETHER YOUR PENNY IS A COPPER OR A ZINC COIN?

WHY IS THE STATUE OF LIBERTY GREEN?

AMERICAN COPPER THEFT CONTINUES TO CREATE TROUBLE FOR CITIES ACROSS THE NATION

WINNERS OF 2014 NORTH AMERICAN COPPER IN ARCHITECTURE AWARDS

ARTISTIC COPPER REFURBISHMENT REINVIGORATES MAINE’S STATE HOUSE DOME

COPPER KITCHEN SCRUBBERS REVOLUTIONIZING IT?

SOUTH AUSTRALIA SET TO OPEN THE BIGGEST AUSTRALIAN COPPER MINE IN THE COUNTRY

DISPUTE RESOLUTION MOVES TO STABILIZE WORLD COPPER PRICES VIA INDONESIA

PERU SET TO EXPLODE WITH COPPER EXTRACTION

MAJOR COPPER DISCOVERY ON THE PACIFIC RIM

SMC IN YOUR BACKYARD WITH SLUGS AND COPPER TAPE

ROUND ENAMELED COPPER WIRE // SMC COPPER PRODUCTS

COMPARISON ON CHINA IMPORTS AND EXPORTS OF COPPER AND ALUMINUM

SMC QR

SMC #BuildingValueAcrossTheGlobe

Source: soundqubed.com, wikipedia

Pictures: audiowork.wordpress.com,      electronicsforevery1.blogspot.com

Camilla G.//SMC Editor

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Shanghai Metal Corporation

As an integrated global manufacturer, supplier of metal related products and reliable services we dedicate this blog to manifest our interests on different topics that would surely brighten your mind everyday. Each article is suited for every types of reader because we value simplicity as the key to transmit messages. Follow us and stay updated ~! Visit our main website to learn more about us : http://www.shanghaimetal.com/ Our address : 20th Floor Yuan Mansion, 738 Dongfang Road, Shanghai, China 200122 Email : shanghaimetalcorp@gmail.com Skype : shanghaimetal Telephone : +86 21 6875 6127 Monday - Friday : 9am - 5pm Saturday & Sunday : Available by appointment

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