CHOOSE A SYSTEM TO SUIT YOUR NEEDS

Press, Volume CXVI, Issue 34151, 12 May 1976, Page 18

CHOOSE A SYSTEM TO SUIT YOUR NEEDS

A high fidelity sound system must maintain a high standard in every link of the chain. The Philips hi-fi turntable, built in to either model 23RH 857 or 23 RH 959, does that. It has a magnetic cartridge, a beltdriven platter and vis-cosity-damped tone arm fit. The free-float-ing separate subchassis for the platter, motor-drive and tone arm is isolated from external vibrations through a shockabsorbing spring suspension.

The basic tuner and amplifier command module 23 RH 756 (pictured below) or 23 RH 858 with built-in cassette deck can either be connected to the same turntable in modular form, or more sophisticated hi-fi turntable modules. Both the electronic hi-fi turntable and the automatic electronic hi-fi turntable exceed the specifications demanded by Philips hi-fi international and the European DIN 45500 hi-fi standards. Or you may decide to add a modular cassette deck to the basic tuner and amplifier combinations 23 RH 756 or 23 RH 857 now or later: the range allows you tc tailor your stereo system to suit your needs with built-in provision for adding rear speaker boxes that give the extra dimen-

sion of Ambio 4 “surround sound.” The 8 ohm loudspeaker boxes you choose to complete the stereo chain may be selected from a range of three hi-fi systems. The first of these, 23 RH 445 in which each cabinet has an internal volume of 25 litres and 20 Watts RMS power handling capacity, incorporates an Bin woofer and Tin tweeter in a two-way system with specially designed crossover filter network to ensure smooth distribution of the full audio range from 35 to 20,000 Hz. Next in line, the 23 RH 446 system, features larger cabinets of 35 litres internal volume. They are each rated at 30 Watts RMS power handling capacity and provide a broader sound spectrum with threeway speakers comprising Bin woofer, Sin squawker and lin tweeter. The crossover filter network effectively distributes the full audio range from 30-20,000 Hz.

Top of the range, the speaker box system 23 RH 447 also provides 35 litres internal volume per cabinet but is capable of handling up to 40 Watts RMS power for distortion-free reproduction of the strongest musical passages. This de luxe three-way system has two Bin woofers, a sin squawker and a lin tweeter. Cross-over filter networks give the smoothest disi ribution. of the entire audio range from 30-20,000 Hz. The modern high-quality eight inch woofers employed in these systems have a rigid cone construction that research has shown to be a significant improvement over earlier traditional large diameter bass speakers, which were prone to cone break-up at high power levels. The new eight inch woofers combine efficiency, compliance and low resonance for excellent low note sound. The concept of modular design allows the listener

to vary the layout of his equipment to suit a wide variety of furnishing arrangements. The command module may be located in a position where it is most convenient and the satellite modules placed elsewhere in the room to suit the individual’s taste, both from the point of view of furnishings and of sound reproduction. Modular construction permits wider separation of the loudspeaker boxes for improved stereo effect. To obtain the full stereo effect from records and tapes separate the two main speaker boxes by a distance of up to three or four metres, depending on the size of the room and the location of the listeners. Bass response is accentuated if the loudspeakers are positioned in the corners of the room. Avoid placing large or upholstered furniture in the path of the loudspeakers and keep the loudspeaker positions as symmetrical as possible.