Member Summary

Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 5 / 10 Views: 190

Member Actions

Improve This Post

Technical Details

Brand: Simon






Country of Manufacture:United Kingdom

Tracks:1/2 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 7"

Number of heads: 2

Head Composition: Permalloy

Head Configuration: Mono - Full Track

Auto Reverse?:Yes

Frequency Response:(all 3 dB): 7½ ips: 30Hz to 12kHz

Wow and Flutter:better than 0.2% peak to peak

Signal-to-Noise Ratio:-52dB

Sound quality rating:5 / 10

Long-term reliability rating: 5/ 10

Additional Details


An automatic reversing half-track mono recorder with impressive specifications and features for its time. Some of these included three-way mixing facilities, bass and treble lift and cut with independent controls, remote control facilities, high quality 2-way speaker system, a push-pull oscillator for noise and hum suppression and a frequency response of 30Hz to 12kHz 3dB
at 7½ ips.
A ‘magic eye’ cathode ray tube was used to display recording level – this can be seen in the picture at left at the front right hand side of the speaker grille beneath the power light.

Additional Info

Rewind speed: 2 minutes for 1200ft / Audio output power: 10 watts / Inputs: mixable microphone, grammophone and radio / Speaker(s): 0ne 10 x 6″ elliptical and one 4″ tweeter with diffuser / Dimensions: 17 x 10½ x 15″ (432 x 267 x 381 mm) / Weight: 46 lbs (20.9 kg) / half-track mono


No reviews yet.

Service Report

No Service Report yet.

Leave A Review:

Report Inaccuracies on Simon SP4

You need to be logged in for this feature to work.