Model:Stellaphone ST 451
Country of Manufacture:
Release dates:1958 - 1961
Speeds: 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:60 - 9kHz
Wow and Flutter:
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
Identical to the Philips EL3527, this was a single speed, half-track mono recorder with a 5″ reel capacity.
The ST451 had an amplifier output of 2½ watts and a 4″ circular
speaker which could be used as a straight-through amplifier system.
A single speed of 3¾ ips was provided and reels of up to 5″ diameter could be accomodated.
The microphone, radio and pick-up inputs were mixable and outputs were
provided for external amplifier and external speaker
Rewind speed: 80 seconds for 180 m tape / Audio output power: 2.5 watts / Inputs: microphone, radio & pick-up / Outputs: external speaker, external amplifier / Tube complement: ECC83, EF86, ECL82, DM75 & metal rectifier / Speaker(s): internal, diameter 4″ (10 cm) / Dimensions: 7½ x 14 x 13″ (190 x 360 x 330 mm) / Weight: 21 lbs (9 kg) / half-track mono