Country of Manufacture:Netherlands
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(all 3 dB): 3¾ ips: 60 to 13kHz
Wow and Flutter:0.6% peak to peak
Signal-to-Noise Ratio:better than 40 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The EL3547 was a very modern machine for the early 1960s. fully transistorised, stereo record and playback, two in-built speakers and four track operation. Other features included ‘multiplay’ (sound-on-sound), two speed operation (3¾ ips and 1 ips) and a 5¾” maximum spool size.
Interestingly, the recorder did not utilise a power transformer. In a clever design feature aimed at saving space and weight (in addition to keeping costs down), extra windings on the drive motor were provided to take the place of this heavy and costly component.
The machine was belt driven from the flywheel, the two playing speeds being implemented by moving the belt between two pulley grooves on the motor via the two push buttons below the take-up spool.
Audio output power: 2.5 watts / Inputs: diode – 3mV / 20Kohm. phono – 150m / 500K. microphone – 1mV / 1K / Outputs: ext speaker – 3 to 7 ohms. headphones, stereo output and diode / Speaker(s): 2 x internal 7″ x 5″ elliptical / quarter-track stereo