Read what some of the leading reviewers said about some of David’s designs!

the amount of low bass energy this speaker can produce is astounding..

is up there with the established big boys, ATC, Genelec, PMC and the rest..

Hugh Robjohns optional, I would suggest imperative extra is on site analysis and alignment of the system..

the results were most impressive, exhibiting delicacy and presence conveying the subtle detail..that few boxed loudspeakers can equal

Ivor Humphreys

"there was absolutely no hint of either compression or distortion, just limitless power coupled with lightning speed"

David Allcock

Other Links

Peter Mapp article and others, Look here.

Although plots and graphs won’t tell you exactly how a loudspeaker sounds they are a guide to the performance capability.


Measurements were taken with a calibrated Behringer ECM8000 microphone which was placed a few millimetres from the baffle and between the two 10” drivers. Both gated and pink noise readings were taken and the graphs created by the ARTA software programme.


The Twins are set up as two monopoles, forward facing and adjacent to each other with a delay of 1ms set to the outer pair to provide a more even dispersion “in room” with reduced interference response patterns. Eq is applied in the digital domain (Behringer 2496 Ultracurve) and delay in DSP.