The Export Monitor

The Export Monitor model Studio, Floor standing 3-way, bass reflex loudspeaker.

Originally intended for monitoring purposes in the smaller studio, this loudspeaker will give superlative reproduction in domestic high-fidelity installations, where the associated equipment is of a sufficiently high standard.

The main drive unit is specially constructed, and the performance is carefully evaluated for each loudspeaker. The special plastic cone and surround material are employed to ensure a uniform response, any slight residual colouration being minimised by individual doping of the cone, a process carried out by a skilled technician.

The tweeter units are specially selected, and all must meet a rigid pass specification. Matching of the bass and tweeter unit efficiencies is controlled by a low-loss autotransformer with 1 dB tappings.

All Export Monitor Loudspeakers are individually measured on a Bruel and Kjaer automatic curve tracer.

After frequency response tests have been carried out the final performance of each speaker is compared to Reference Standard BBC LS3/6 loudspeaker on pink noise and master tales of the highest quality.

Specifications:
 

• Enclosure Type:  3-way, bass reflex
• Overall Frequency Response:  40 – 25,000 Hz;  40 – 18,000 Hz ±3 dB
• Power handling capacity:  35 watts, speech, and music
• Impedance:  suitable for 8 – 16 Ω matching amplifiers
• Drive Units:  3
• Finish:  Teak or Walnut veneer with black grille cloth.

De-luxe castor trolleys are available which provide correct positioning relative to the floor, whilst allowing easily maneuverability for cleaning or listener position change.

Here you find 17 models, 17 with images and 3 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Rogers, Catford (see also Rogers Birmingham)