Help & Frequently Asked Questions


Audio

Which is better: Digital coax or Toslink (Optical)?
What sort of connectors are used for digital optical connections?
Why does Van Damme speaker cable seem so cheap?
Do the cables you sell come in different colours?
What speaker cable should I use ?
Can I split an HDMI signal ?
What is meant by AWG and cross sectional area ?
How do you operate the spring-operated screen?
Is it advisable to join two separate pieces of speaker cable together?


 Which is better: Digital coax or Toslink (Optical)?

Digital coax cables deliver a digital audio signal via electricity travelling down a copper wire over a shielded 75-Ohm coaxial cable with 75 Ohm RCA connectors used on both ends. Toslink (Optical) delivers a digital audio signal via a red light beam over a fibre optic cable comprised of many small strands of polished plastic specifically designed to transfer light. In our opinion the performance difference between Digital coax and Toslink connections is negligible. The major difference will come from the quality of your electronics, not the cable. For instance, if your CD player uses superior quality components for its Coax digital audioconnection and inferior components for its Toslink connection, then it only stands to reason that the Digital coax would have better sound quality than the Toslink. The difference in the cables physical characteristics is also something to look at. A Digital coax cable is much sturdier; however, since it carries the digital signal via electricity running down a conductor, it can transfer grounding problems from one component to another, if they already exist. The Toslink cable is more fragile, if stepped on a Toslink cable can be crushed and possibly destroyed. However, an optical connection is immune from possible ground earth loops.
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 What sort of connectors are used for digital optical connections?

Optical digital (Toslink)
The most common type of digital audio connections are on DVD players, AV receivers and PC soundcards with surround sound capability. Sometimes labelled SPDIF these connectors utilize fibre optics to deliver the digital audio signal.

Mini-optical/Mini-Toslink
Used on portable audio devices, especially MiniDisc recorders, for digital audio, including surround sound in some cases. See Optical digital. This type of jack is commonly used for the digital audio input and output of portable audio devices. A mini-optical jack is the same shape and size as a standard analog audio mini-jack. This allows portable MiniDisc recorders to use a single input jack that accepts both mini-optical connectors and standard analog audio mini-jacks. The MD portable detects whether you're making a digital or an analog connection based on the type of cable you're using, and automatically selects the appropriate recording mode.
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 Why does Van Damme speaker cable seem so cheap?

Van Damme cables differ slightly from some of the other makes we stock in that they do not come in retail packaging, they don’t have any added gimmicks or ‘go faster stripes’ and they do not spend money on retail advertising campaigns. When you purchase Van Damme cable all you are paying for is a quality, high performance product!

Van Damme manufacture cable for the professional market. Their range of cable is unrivalled in the industry and is employed so confidently on stages, studios and screens across the world.

Although much of Van Damme’s huge range of products is not relevant to the domestic home cinema and hi-fi market we have chosen a few products that are.
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 Do the cables you sell come in different colours?

Most of the cables we sell do not have a choice of colour options. Please see the individual product pages for details of item.
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 What speaker cable should I use ?

A good speaker cable provides the electrical connection between the amplifier and the speaker with minimal resistance and should allow the signal to be transmitted without degradation or colouration. That said, speaker cables tend to vary in the follow ways;

Conductor size
The main factor that affects the quality of the cable is the amount of conductor that is used in the cable construction. The more conductor that is used, the lower the resistance of the cable and therefore the more transparent and accurate the signal transmission. The amount of conductor used in the cable construction is usually displayed as the “cross sectional area” of the conductor and is measured in square millimetres. There is also another system for measuring the amount of conductor and that is the American Wire Gauge. The size of the conductor is expressed as a number e.g. 16 AWG. For conversion of AWG to metric please see our conversion chart.

As a general rule most people find that cables of 1.5 or 2.5 square mm are good for home cinema systems where you have purchased an AV receiver and a speaker package. If you have a cable run of over 20m we would recommend that you use 2.5mm cable. There is no problem using larger cable for home cinema but you may find that apart from it becoming rather expensive, the larger cable can be a bit cumbersome when used with smaller speakers. 6 square mm cable is usually used for stereo systems, critical monitoring or very high specification home cinema.

Conductor type
Speaker cables generally have conductors made of copper because copper is the best electrical conductor. Of course not all copper conductors are the same so there is usually some indication as to the purity of the copper, often quoted as a percentage of the purity of the oxygen free copper or other details that describe the manufacturing process of the copper such as “ultra pure, linear crystal oxygen free copper”.

There are several cables on the market that use silver plated strands of copper. The silver plating is designed to make use of the ‘skin’ effect and improve the high frequency transmission where as having a larger solid conductor improves bass response. Many cables use a combination of these factors or alternative ways of arranging the strands to create hybrid speaker cables.

Cable construction
The physical construction of speaker cables also varies. The traditional construction of speaker cable is to have the conductors arranged side by side and coated with insulating plastic. These types of “figure 8” cables have a lower profile but are often not as flexible as the round cables. The round cables, and in particular the Van Damme are easier to use if being installed in walls, ceilings and floors. Some “figure 8” cables, like the Profigold BassFlex, are designed to be flatter and the lower profile make them better for installing under carpet.Speaker cable construction types

All things considered
So when it comes to choosing your cable you need to consider conductor size, construction and the type of materials used but most importantly you need to consider your budget. As with all audio and video connections your system will only ever be as good as the weakest link in the chain. So choose a quality of cable that is in tune with the quality of your other components. We offer a broad range of cables and there should be something that suits most systems and accommodates most budgets.

 

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 Can I split an HDMI signal ?

Yes you can, but if you were hoping for a simple splitter cable you are going to be disappointed. Splitting an HDMI signal requires a distribution amplifier which is a piece of electronic equipment that distributes the incoming signal to 2 or more output ports. An HDMI distribution amplifier or splitter will ensure that each of the output signals matches exactly the incoming signal and the HDCP protocol is passed to the receiving devices. Some HDMI distribution amplifiers also provide digital audio outputs for connection to a AV receiver or offer a combination of HDMI, DVI, optical and coaxial audio inputs and outputs.
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 What is meant by AWG and cross sectional area ?

Both terms are a method of measuring or notating the size of the electrical conductor in cable, AWG stands for American Wire Gauge, which is mostly used by American companies such as Belkin. Cross sectional area is a metric measurement in mm² and refers to the total cross sectional area of the cables conductor.

AWG American Wire Gauge to mm2
20 AWG = 0.5 mm2
18 AWG = 0.75 mm2
17 AWG = 1 mm2
16 AWG = 1.5 mm2
14 AWG = 2.5 mm2
12 AWG = 4.0 mm2
10 AWG = 6.0 mm2
closest equivalent wire size
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 How do you operate the spring-operated screen?

Simply pull the screen down using the cord or handle, and stop once it is in the right place. To roll the screen away, first pull it down reasonably quickly, then allow it to roll back in without stopping it. It will stop at its locking position.
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 Is it advisable to join two separate pieces of speaker cable together?

It is possible to join speaker cable lengths together, however care should be taken to ensure that a good electrical contact is made and that the conductors are adequately insulated. If you need to do this we would recommend that the conductors are soldered together and insulated with electrical insulation tape.

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