Russell K Red 150 Floorstanding Loudspeaker

Producing sound that is close to the truth is not easy, but the Russell K Red 150 floorstanding loudspeaker design succeeds in raising the performance of the Russell K Red 100 to an even higher level. The Red 150 floorstander sounds lively, natural, and has perfect timing, with a fast, rhythm and full bodied bass.

Cabinet

Dimensions H- 950mm (1000mm including plinth, base and spikes) W-240mm D-250mm
Construction 16mm MDF all sides apart from front baffle which is 19mm.
Totally undamped cabinet
3 acoustic loading bracing shelves with multiple apertures, mounted below the tweeter, below the bass mid driver and below the sub bass driver
1 bracing shelf mounted near the bottom of the enclosure containing an internal port
Internal port vents into a small chamber containing 2 asymmetric length reflex ports tuned as a system to 21Hz

Drive Units

2 x 6.5” Bass units with impregnated paper cone and curved optimised acoustic profile
High power Ferrite magnet driving a 25mm voice coil with aluminium former and Faraday distortion cancelling copper ring
25mm soft dome tweeter
Double Ferrite magnet system
Copper Clad Aluminium voice coil wire on a Fibreglass Former and Faraday distortion cancelling copper ring

Crossover

All drivers connected in positive phase
Sub bass driver starts roll off at 80Hz 6db/Oct fed by “Enclosed Field Iron Core Inductor”. Features high power without saturation, very low DCR and almost no stray magnetic field
Bass/Mid driver crossover frequency 2200Hz nominal 12 db/Oct. Utilises an “Enclosed Field Ferrite Core Inductor” in the signal path. Very low DCR nominal stray fields
Tweeter attenuation by misaligned Zobel network as opposed to conventional L-Pad
All Drivers have only one component in the signal path
Phase optimised through the crossover region
In room usable frequency response 20Hz-22KHz (dependent on room)

Sensitivity: 87db 1 watt 1 Metre