What is stereo?

There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.

H.H. Scott '59


 The BSR UA70 record changers will play a stack of one to six records in automatic sequence and shut off after playing the last record. 16, 33-1/3, 45 and 78 RPM records can be played.

Indexing, correct tone arm set-down, for playing 12", 10" or 7" records is determinated by the position of the 12, 10, 7 control.
The tripping method is the velocity type. Rapid tone arm acceleration is required to actuate the trip mechanism.
The changer operates on 117 V AC, 60 Hz with provisions made for converting to 220 V AC operation and 50 Hz operation. The motor leads can be connected as shown in diagram, on the motor, for operation on 220 V AC.  A simple conversion kit for changing to 50 Hz operation is available.
The BSR model UA70 is equipped with a pickup cartridge and tone arm head combined in a single unit.
 Features of the BSR UA70:
Calibrated stylus pressure control for precise low pressure trecking.
Coares and fine counter balance adjustment of pick-up arm.
Corner mounting springs effectively insulate the instrument from any external vibrations.
Light-weight cartridge shell with finger lift.
Integral mechanical cueing device allows the pick-up arm to be reised or lowered at any selectet point on the record when records are played manually.
Automatic lock which secures arm to rest after record has been played.
11" diameter deep rim turntable with attractively styled mat.
Dynamically balanced four pole motor  suspended on butyl rubber mountings.
Interchangeable centre spindles for manual or automatic play.
Automatic disengagement of idler wheel when the unit is shut off.
Simple to operate linear controls.

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