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Extremely high output

Incorporated digital amplifiers

Superior signal processing including Fletcher Munson implementation:

Best soundquality at every sound level

Practical 90 degrees horizontal coverage

Narrow vertical beam: Less feedback risc

Less floor- and ceiling reflections:

Soundquality is less compromized by room acoustics

Increased authority, highly improved intelligibiliy at greater distances

Much better projection compared to conventional systems particularly in difficult acoustic environments!

Superior coupling amongst two D-Top1, high sections forming a bigger line array, yielding even better long throw properties.

Compact size

Low weight

Frequency range

Max SPL @ 1m


Optional flying hardware
active high output top
dual 12 inch neodymium hornloaded
neodymium planar wave line array
100 Hz-18kHz
digital, 600W mid, 160W high, processor controlled,
including FMC-implementation
140dB full space
(Calculated and confirmed in real life measurement using a pink noise burst)
Mid: 90' horizontal, 45' vertical
High: 90' horizontal, 10' vertical
External brackets using 4x M10,
designed for flying one or two tops.

Unlike the smaller frontloaded tops, D-Top1 is not suitable for fullrange use.
That's because the applied hornloading has a low cut off frequency of 100Hz.

Therefore the first two DIPs are not in use.
Of course D-Top1 does have two DIP's to reduce input sensitivity by 3, 6, of 9dB.
(Attention! In the first D-Top1 versions DIP 1 and 2 were used for setting the Fletcher Munson Compensation. Check the manual to be sure what version you have!)

D-Top1 uses two extremely efficient (103dB/1w/1m) 12 inch neodymium midrange speakers in a hornloaded enclosure. Sensitivity is better than 113dB/1w/1m full space.

The horn is designed for minimum vertical beamwidth and 90' horizontal coverage, thus providing medium throw properties and yet useful and predictable horizontal coverage.

The high section consists of a planar wave line array, again giving good horizontal coverage but at the same time superior authority at greater distance. Due to the narrow vertical beamwidth, very high SPL can be achieved over much longer distances compared to conventional horns. Additionally, the vertically narrower beam will cause virtually no ceiling and floor reflections, resulting in a less noisy and much cleaner sound quality, increased intelligibility and reduced high frequency feedback risk.

Two D-Tops can be stacked or flown on top of each other, high sections together, yielding even better long throw properties. In this way, the ideal acoustic coupling boosts the SPL to 146 dB full space, with equal horizontal coverage and even better vertical beaming, and no lobing or phase funnies.

When conventional side-by-side stacking is preferred, horizontal coverage can be increased to 180 degrees. Allthough the acoustic coupling will not be perfect for the entire frequency range, this stack will yield up to 6dB gain for the low mid regions, and 3dB gain for the high frequency regions.

A state of the art switching amplifier delivers 600 watts (max) of cold power into the mid section, and 160 watts into the high section. These amplifiers use switched power supply for best mains efficiency and weight benefits. Newly developed smart processing ensures safe operating conditions for all drivers. Additionally, level dependant Fletcher Munson Compensation processing is performed to achieve best performance at all sound levels.

Why a conventionally stacked PA is far from perfect...

When stacking conventional tops together, the acoustic coupling wil only be effective for low mid frequencies, but for the higher mid and high frequency regions, differences in phase due to different path lengths will result in destructive interference. Very often this problem is addressed by using high directivity HF-horns (e.g.60x 40 degrees) to prevent the beams of adjacent tops to interfere. Therefore, the result of stacking two conventional tops together wil yield 6dB more output for the low mid frequencies, and no(!) gain for the HF-frequencies, since mostly you will be in only one horn's beam. This is the reason why stacking conventional PA tops will dramatically change the sound of your PA, and heavy EQ-ing will be necessary to compensate for this... D-Tops however will show optimal coupling for the entire frequency range, and therefore yield 6dB more output with exactly identical sound characteristics and coverage.

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