Warwick BC20 Owner's Manual page 5

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DYNAMIC DISTORTION LIMITER ™
Distortion occurs when an amplifier works beyond its range, when the power supply cannot supply the power any more to
take the amp higher. A common method to control distortion in amps is to use a limiter, a device that stops the signal going
beyond a specific level. Audio limiters work by setting a threshold signal level where the circuit kicks in and keeps signal
levels within the capabilities of the power supply. This method is not very precise and often causes audible effects such as
pumping and thumps. We designed a circuit that instead reads the distortion level in the power amp and starts limiting as
soon as the amp shows even miniscule amounts of distortion. This means our amps always stay within 0.3% distortion
(THD) when most amps are rated at between 5-10% distortion (that means that to get your 20 Watt out of a 20 Watt amp
you will get it audibly distorted and if you want a clean signal the power will be a lot less).
There are desirable types of distortion, but these are not usually associated with transistor amplifiers, but more commonly
associated with tube amps and effect pedals. Warwick's goal is to give the user a great, clean sound allowing the user to
decide how much, and what kind of distortion to employ.
INTEGRATED SPEAKER DESIGN
All the speaker drivers and cabinets have been designed in tandem with the electronics to create units that work together
efficiently. Careful consideration has been taken to modify all parameters, thereby achieving the best results in sound and
performance. All components reflect a custom designed solution to give the end user optimum control over his/her tone,
volume and configuration.
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