Nº1 Features

Phase linear response from bass to mid range

This speaker is equipped with symmetrical element positions with the same acoustical path length from all the elements to listeners ear. Combined with an active X-over between bass and the rest of the elements, producing true first order slopes, this creates phase linear response from bass to mid range.

Waveguide and treble driver

Treble driver, a true ribbon flagship model from RAAL, and mid-range drivers are placed in a to a single metal wave guide casting. It has superb impulse response with almost non-existing resonances and very wide frequency response. The waveguides raise the sensitivity and max SPL from the drivers, lower distortion, and produce one of the best of axis responses ever seen.

Mid range drivers

The mid range drivers (120mm SEAS magnesium Excels) are placed in their own enclosures, which are sort of inverse horns, tapering to the end and damping the back wave effectively. The mid range drivers work as perfect pistons throughout their whole range and produce impeccable impulse response with no stored energy release.

Bass range drivers

Bass enclosure is equipped with passive radiators, which are tuned to a very low frequency in order to keep the group delay of important bass frequencies low and to provide good low bass headroom. Active X-over flattens the response to a respectable -3dB@25Hz. Drivers are 220mm SEAS magnesium Excels.

Active cross-over and bass amplifiers

The active X-over is a separate unit. It is equipped with two band parametric EQ for simple room correction.The unit is built to the same standards as Knif Audio’s products and includes Elma rotary switches, class A discrete OP amps, and both XLR and RCA inputs and outputs.Bass amplifiers are integrated to the loudspeaker cabinets. The amplifiers are 500W Hypex N-core modules.

Enclosure materials	Airgrade plywood, resin and metal castings
Dimensions	168 x 43 x 60 cm
Mid+Treble impedance	4 Ω
Mid+Treble sensitivity	92 dB/2,83 V
Freq response, -3dB points	25 Hz and 40 kHz
Integrated bass amplification	Hypex Ncore, 500W per channel

Input impedance	20 kOhms per phase, balanced or unbalanced
Output impedance	50 Ohms per phase, quasi balanced
Dimensions	44 x 32 x 9 cm

Phase linear response from bass to mid range

Waveguide and treble driver

Mid range drivers

Bass range drivers

Active cross-over and bass amplifiers

Technical Specifications

Loudspeaker

Active cross-over