The patented Volt Radial design overcomes the performance barrier that has affected high-power loudspeakers ever since they were developed: heat.



Power for power, Volt Radials run cooler and deliver stable sound that does not fall-off or degrade
during a performance. Equally important, Volt Radials deliver the same high level output all the time-unlike other speakers, which lose power and definition as they get hotter.

Finally, Volt Radials are more reliable. There's simply less heat for them to handle, so they're under a lot less stress.

If you want speakers that sound better and last longer, choose Volt Radials.



In conventional high power loudspeakers, 95 percent of the power input is converted into heat. In a 500 watt loudspeaker, that's 475 watts of heat, causing the voice coil to reach temperatures as high as 300 C. Apart from the obvious safety issues of this sort of heat, it badly affects loudspeaker performance through the 'power compression' effect and degraded bass performance. The potential for poor reliability is obvious.

 

  

Traditionally, cooling has been achieved by means of a vent in the rear of the magnet system, through which air is 'pulsed' as the cone vibrates. The degree of the vibration depends upon the level of bass and declines as the frequency increases. In some circumstances, the 'pulse' effect can be lost altogether, depriving the loudspeaker of an essential means of cooling. When this happens, only natural conduction from the outer surface of the magnet into the enclosure is left. And as the air in the enclosure begins to heat up, so even this system performs less well, and the loudspeaker losses even more efficiency.

B2500.1
     

 

  

In the Volt Radial, the chassis is fixed to the magnet centre pole and doubles as a giant heat sink. It is mounted on the surface of the enclosure and is thus always ventilated, an effect augmented by the movement of the cone. The magnet benefits from conduction cooling as well, and may also be rear vented to add to the overall benefit. This system typically runs at half temperature, power for power of conventional loudspeakers. Put another way, a conventional speaker starting a session at the same output as a Volt Radial may sound only half as loud at the end. And we have the figures to prove it!

R3823

Improved reliability
Lower coil temperatures mean less stress and fatigue. Coupled with Volt's use of 'space age' components and composites, the Volt Radial outlasts and outperforms standard speakers, power for power.

Sustained output
Because the Volt Radial voice coil runs cooler, it reduces the notorious 'power compression' effect. In a conventional loudspeaker, heat increases the resistance of the voice coil: the loudspeaker loses efficiency and delivers less output. But not the Volt Radial! It will draw up to 100 percent more usable power at maximum amplifier output, especially when hot, delivering almost 3dB more maximum sound than an ordinary speaker under the same conditions. That's nearly twice as loud and more cost effective!

Better bass
Hotter coils perform less efficiently, causing output quality to suffer. Bass sounds more 'boomy' and there's less depth, definition and punch. The conventional solution is to use more speakers.
Because the Volt Radial runs cooler, it avoids this effect, ensuring consistent, stable, top-quality output in all conditions.

R3853

RVCXD3153

R3823

 

RV4504

RV3143

"Click" on the pictures to access full specifications of each product

We reserve the right to amend specification without prior notice.
Made in England by Volt Loudspeakers Ltd.