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Most Modern Sound System
ers; And the price is reasonable too
graph they are mounted from top to bottom as follows:
1. Voltage regulator for increasing or decreasing the mains voltage so as to get the exact required voltage of 110 volts to the amplifiers.
2. The HSW amplifier with 2 sockets for 2 machines and Photo-cell voltage controls one for each machine.
3. The exciter lamp D.C. special Rectifier consisting of one Dry rectifier and choke, condenser, etc. with fuse and amperemeter, with change-over switch from one machine to the other and with regulating rheostat to adjust voltage to the exciter lamp.
4. Gramophone unit with electric motor and a high class pickup. This whole unit is demountable from the panel in case it is to be used in another room.
5. The HEW amplifier.
The Heavy Duty "MAXIMUS
H" Loudspeaker
This giant loudspeaker is capable of handling up to 25 watts without distortion and is the standard supply. It is fitted with a 13V2 inch high efficiency cone and a built-in speech transformer with 500 ohms input. The field is universal for either 110 volts D.C. or 220 volts D.C. supply, and it can also be used on 110 volts A.C. or 220 volts A.C. by the addition of a rectifier unit which supplies 220 volts D.C.
"Hi-Lo-PHONIC" Cellular Speakers for high class theatres
It is a well-known fact that no single speaker can be expected to cover the full range of frequencies from 40 to 12.000 cycles. The best type of cone speakers available covers up a frequency range of only 60 to
SOUND SYSTEM
4,500 cycles. Therefore it was found necessary that to cover up the full range of frequencies, it would be better to have two types of speakers combined together in order to achieve the full frequency range of 40 to 12,000 cycles. And hence our introduction of the latest "HiLo-PHONIC" Speakers, using one Hochtone horn-type speaker for the higher frequencies and a special Tieftone cone-type speaker for the lower frequencies alone.
A filter is used with this combination which passes only the higher frequencies to the Hochtone unit and only the lower frequencies to the Tieftone unit. This filter also protects the Hochtone horn-type speaker unit because it prevents the
25
HI-LO-PHONIC Celludar Speaker Model 5.
24 cell horn with 4 units for high frequencies. Double baffle with 4 cone speakers for low frequencies.