PHILIPS STEREO GRAM BI RADIO (RSG 032)

• Country: Belgium
• Year: 1956/1957
• Manufacturer / Brand: Philips Belgium (Belgien)
• Model: B5X63A – Philips Belgium Belgien
• Material: Wooden case
• Shape: Table model with Push Buttons.
• Dimensions (WHD): 615 x 423 x 257 mm / 24.2 x 16.7 x 10.1 inch

Description

It the fifties Philips introduced Bi-ampli radio’s. These radio’s have two separate amplifiers. One has high tones filtered out and is connected to a big speaker, the other one has low tones filtered out and feeds a small speaker. This way one gets a better sound reproduction, because high and low frequencies have less chance to interfere with each other and (in theory) the total output power is doubled. An example of a ‘real’ Bi-ampli is my B6X63A. It has a double triode ECC83 as a pre-amplifier and two (penthode) EL84’s as output stages. The two 4 Ohm speakers are connected via two separate output transformers.

It works great and the sound is very good! The face reads “Philips, Bi Ampli Radio, Stereo Gram”. It measures 9 inches tall by 21 inches wide by 10 inches deep. It is in good condition.

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