The Monitor Series RDM1 and 2 were high quality loudspeakers designed to be equally suitable for home use or for near-field monitoring. Using Reference Series parts in an attractive cabinet with high gloss side panels they followed on from the highly regarded Reference Series Models 101/3 and 102/2, and benefited from KEF’s involvement in the studio-monitoring arena which included the Professional Series models KM1 and P60, and the BBC designed LS5/1A and LS3/5A. The KEF Uni-Q point source array is ideal for monitors due to its even power response and highly detailed stereo imaging. Both systems could be used equally well when mounted on their sides, for example, on a monitoring desk, due to the symmetry of the Uni-Q radiation pattern. The range was later supplemented by the floor standing RDM3.

 

RDM1 was a compact two-way closed box system using a long throw version of the 165mm (6.5 inch) Uni-Q array from the Reference Series. It produced a clean, detailed and consistently smooth sound  – a prerequisite for extended listening sessions.

 

RDM2 was a compact two-way reflex system using a long throw version of the 165mm (6.5 inch) Uni-Q array from the Reference Series Model 100. It produced a clean, detailed and consistently smooth sound  – a prerequisite for extended listening sessions. The reflex loading allowed a higher sensitivity and output capability compared to the RDM1 and both systems could be used equally well when mounted on their sides, for example, on a monitoring desk, due to the symmetry of the Uni-Q radiation pattern.

 

RDM3 was a slim floor standing three-way design using the new B169 racetrack bass driver in a reflex enclosure. It offered the sonic values of the RDM1 and 2 with extended bass response, higher output capability and a domestically pleasing enclosure.

 

Specification: RDM1
System type: Two-way, shelf/stand-mount
Enclosure type: Closed box
Dimensions (H x W x D): 300 x 234 x 220mm (12 x 9.3 x 8.8 inches)
Weight: 6.5kg (14.3 lbs)
Nominal impedance: 6 ohms
Amplifier requirements: 30-125W
Frequency response: 100Hz to 18kHz +/-2.0dB
Sensitivity: 87dB at 1m for 2.83V
Maximum output: 108dB
Finish: Grey vinyl body with Cherry wood, red or grey high gloss side panels
System: SP3253
Drive units: B160 bass unit (SP1381), NT25 tweeter (SP1353)
Crossover network: SP2257

 

Specification: RDM2
System type: Two-way, shelf/stand-mount
Enclosure type: Closed box
Dimensions (H x W x D): 330 x 234 x 250mm (13.2 x 9.3 x 10 inches)
Weight: 6.5kg (14.3 lbs)
Nominal impedance: 6 ohms
Amplifier requirements: 30-175W
Frequency response: 80Hz to 18kHz +/-2.0dB (-6dB at 65Hz)
Sensitivity: 90dB at 1m for 2.83V
Maximum output: 112dB
Finish: Grey vinyl body with Cherry wood, red or grey high gloss side panels
System: SP3254
Drive units: B160 bass unit (SP1382), NT25 tweeter (SP1353)
Crossover network: SP2258

 

Specification: RDM3
System type: Three-way, floor standing
Enclosure type: Reflex
Dimensions (H x W x D): 1000 x 234 x 272mm (39.4 x 9.2 x 10.9 inches)
Weight: 21kg (46.2 lbs)
Nominal impedance: 4 ohms
Amplifier requirements: 30-200W
Frequency response: 40Hz to 18kHz +/-3.0dB (-6dB at 35Hz)
Sensitivity: 90dB at 1m for 2.83V
Maximum output: 113dB
Finish: Grey vinyl body with Cherry wood, red or grey high gloss side panels
System: SP3295
Drive units: B169 bass unit (SP1425), B160 midrange unit (SP1421), NT25 tweeter (SP1353)
Crossover network: SP2302

 

Download Monitor Series RDM1 RDM2 Brochure
Download Monitor Series RDM3 Brochure
Download Monitor Series RDM1 RDM2 RDM3 Installation Manual