Speaker Cones Essay

Great Essays
Register to read the introduction… 1.2. Cones

Speaker cones vary in size and shape as well as the material they are made of. They range from original Rice and Kellog design-paper cone, through Kevlar and carbon fibre, metal (aluminium) and a variety of composites, each manufacturer employing different materials suited to providing the best efficiency and linearity. First of all they wanted to achieve manufacturing consistency since wood is not a homogenous substance and tends to vary from one form of timber to another, even one batch of the same timber to another. At this point it is worth mentioning the phenomenon of wood pulp cones. Even though it seems hard to keep manufacturing consistency “a lot of experienced guitar players claim to hear their instruments more clearly through paper cones in contrary to plastic ones”( Holland, Newell, 2007, p.28)
Organic cones have another great advantage over other types – they maintain high rigidity and high damping factor which is impossible with synthetic cones – one tends to reduce the
…show more content…
The chassis

The prime function of the chassis is to provide a frame so magnet and suspension systems can be attached. Whether this is made of plastic or metal is a decision strictly limited by the RMS power that the speaker can handle. High power performance can create heat of around 250°C(Langford-Smith, 1957, p. 835) hence the need for a metal chassis. It helps to dissipate heat and is sufficiently stiff. Another choice has to be made in choosing a stamped or cast metal basket. The latter tends to be more precise and maintains its stability. Aluminium cast frames are usually chosen for large woofer cones which have to deal with heavy magnets.
On the one hand, the chassis has to be as strong as possible but on the other hand it must not influence speaker cone movement. Therefore it needs to be as open and durable as possible. Well-vented design assures heat radiates away from the voice coil. The last factor is self-resonance. To counter this the chassis has to be acoustically dampened.

1.6. Voice coil
…show more content…
The front and rear part of a cone are totally out of phase to each other. Without an enclosure they would cancel one another out greatly, especially lower frequencies which are more omnidirectional. Hence we need to make sure that waves created from behind won't interfere with those at the front. How can this problem be solved? The perfect solution is to place the speaker in a large rigid board or a wall. In an ideal world it would be infinitely large to avoid front-to-back cancellation. Practically, this is obviously quite hard to achieve here on earth so we tend to put a driver in a sealed box

Related Documents

  • Improved Essays

    Case Study: Horseshoe Crab

    • 1302 Words
    • 6 Pages

    The density of wood is also strong as well. This assists with its strong fracture toughness. Unfortunately wood is easily cracked in the parallel region, but not the perpendicular…

    • 1302 Words
    • 6 Pages
    Improved Essays
  • Improved Essays

    The Functions Of Brakes

    • 974 Words
    • 4 Pages

    Requirements of a good braking system: 1. The brakes must stop the vehicle in the least possible distance and time. 2. The brakes must work uniformly well on good or bad roads. 3.…

    • 974 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    In addition to simplicity, it offers added advantages like self-locking along with precise control of translational movement making the gripping more accurate. C. Selection of Material: In the design of the gripper, the major preference is the lightness of the gripper. The robot’s end where the gripper will be attached has a payload of 5 kilograms. So, there is a need to make the gripper as light as possible in order to leave the remaining capacity for the work piece. Stainless steel 304L being non – magnetic and vacuum compatible is chosen as the material for the…

    • 879 Words
    • 4 Pages
    Improved Essays
  • Improved Essays

    It is thought as bumper material, without sacrificing its shock absorbing capacity. Its lightness also helps the bumper become aerodynamically efficient. Ceramics are strong but very brittle, so would not usefully absorb the kinetic energy of impact. The most promising are the relatively new carbon nanotubes. The promising characteristics are as follows: (1) Carbon Nanotubes can have Young's modulus as high as 1 terra Pascal, so it is ideal as a strong bumper material (2) Carbon nanotubes have the greatest of both tensile strength and elastic modulus.…

    • 1064 Words
    • 5 Pages
    Improved Essays
  • Great Essays

    Tensile strength is how resistant a material is to breaking down under tension, this is important in a vehicle body as the body will always be under tension in regular motion and would not be safe if it was to fail under small stresses. Aluminium alloys have a tensile strength of 350MPa which is not as strong as high carbon steel or Carbon fibre reinforced polymers but is very high for a lightweight…

    • 1484 Words
    • 6 Pages
    Great Essays
  • Improved Essays

    Usually, tools are made out of aluminium (lower cost grades of steel can also be used, which can save cost), but any tool that is used must be able to of withstand the very high moulding pressures that will be used. There are generally lower costs when using Compression Moulding. These include the mould tools, the setting up a press, and the production of parts. This makes compression moulding one of the most cost effective methods of making smaller runs of parts, such as in batches. This could be suited to the Third Rail Insulator Chair, because they could be made them in batches, although they would need to be large…

    • 1818 Words
    • 8 Pages
    Improved Essays
  • Great Essays

    Nano Tribology

    • 1685 Words
    • 7 Pages

    The spring constant of the cantilever and its geometry must be well known to calculate the elastic properties. During nano indentation hardness measurement the scan size has to be zero. Advantage of AFM indentation is its high depth and load…

    • 1685 Words
    • 7 Pages
    Great Essays
  • Improved Essays

    Playdoh represents my flexible personality and aluminum’s malleability. I am able to change my ideas and way of thinking to fit the situations I am in, just like how aluminum change change its shape to fit whatever is necessary. My other two symbols represent where aluminum can be found in the real world include a hard hat and aluminum foil. A hard hat represents the workers who work in mines and extract the ores, in the United States over 1.72 million metric tons have been mined. Secondly I chose aluminum foil, this is because aluminum foil is arguably that most notable use of aluminum, this is because of its malleability and favorable traits.…

    • 799 Words
    • 4 Pages
    Improved Essays
  • Superior Essays

    Essay On Steel Frames

    • 1143 Words
    • 5 Pages

    This constructing technique is fast and efficient; it is also known for its less waste generation. Although opponents claim that wood is a good alternative to build houses due to the possibility of reforestation and its resistance, the use of the steel framing technology may be the best alternative in terms of environmental impact, safety, and durability. First, many opponents argue that the…

    • 1143 Words
    • 5 Pages
    Superior Essays
  • Great Essays

    Analysis Of Magnet Wire

    • 1317 Words
    • 6 Pages

    It is used in the construction of transformers, inductors, motors, speakers, hard disk head actuators, electromagnets, and other applications which desire tight coils of wire. Magnet wire is preferred in the condition where the electrical setup requires high performance of power thus high number of coils of wires, but essentially to be fitted into a compacted space such as motor generators and transformers. Figure 2: Magnet wire 3.0 Material Analysis on Magnet Wire 3.1 Wire Interior Material Properties: Commonly, the magnet wire uses copper as the main material, while occasionally aluminium. Physically, copper has a yellowish red appearance and when polished develops a bright metallic lustre. Copper possesses a face-centred-cubic (FCC) crystal structure, with Atomic Packing Factor (APF) of 0.74.…

    • 1317 Words
    • 6 Pages
    Great Essays