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Incorporated digital amplifiers

Superior signalprocessing including Fletcher Munson Compensation:

The right amount of bass at all levels

Switch mode power supply and power stages:

Superior mains-efficiency

Extreme acoustic output in compact size

Just the right stacking height for a D-Top1


Frequency range

Max SPL @ 1m


active high output Low-Q reflex sub
3x 18inch, neodymium, dual vented cooling
35-100 Hz
digital, 4500W processor controlled,
including FMC-implementation
142dB half space
(Calculated and confirmed in real life measurement using a pink noise burst)
HxWxD=150x60x85cm (netto; without wheels)

Using the 4-fold DIP switch
some important parameters can easily be altered.

The low pass filter can be switched from normal-mode to infra-mode worden, to attenuate the basss area above 65Hz.

Additionally the limiter can be set 2dB down for extra safety and lifetime in very tough applications.

And of course this sub also has two DIP's to reduce input sensitivity by 3, 6, or 9dB.

D-Sub3 is a high SPL subwoofer, designed especially to keep up with our D-Top1.
With its height of 1,50m, this sub is just the right height for stacking the D-Top1.
These two units don't only match perfectly in performance, but also logistically; pull the sub backwards onto its wheels, lay down the top on the subs front, and a complete one side PA-stack is rolling in or out the venue!
The D-Sub3 incorporates three ultra modern neodymium woofers. These woofers are built using the latest techniques:
Double, optimised voice coil cooling reducing thermal compression tot a mere 3 dB, and neodymium magnet assemblies for a very high magnetic flux and yet low weight.

These woofers all have their own large enclosure and porttuning in the D-Sub3.

A state of the art switching amplifier provides massive power at about 95% efficiency. This means an energy loss of only 225 watts at 4500 watts mains input. Advantages: No thermal problems, superb mains efficiency. Only 12A mains current draw @ max power. (=averaged value playing musical program, short bursts may show conciderably higher values) This means a complete D-sub/D-Top system may almost be driven to max power on a 25 ampere /230V mains supply.

Newly developed smart processing ensures safe operating conditions for the drivers. Additionally, level dependant Fletcher Munson compensating bass processing is performed to achieve best performance at all sound levels.

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