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Sound Rating: 6 / 10 # Owners: 1
Relaibility Rating: 7 / 10 Views: 454

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Technical Details

Brand: Ferrograph

Model:Series 4

Category:Mid High Fidelity

Application:Semi-Pro

Electronic:Solid State

Country of Manufacture:United Kingdom

Release dates:1959 - 1962

Tracks:1/2 Rec/PB

Speeds: 3 3/4, 7 1/2, 15

Max Reel Size("): 8"

Number of heads: 3

Dimension: 18½ x 17½ x 9¾ " ( 470 x 444.5 x 248 mm)

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v

Frequency Response:15 ips: 40 -15kHz, 7½ ips: 40Hz -12kHz

Wow and Flutter:0.2 % at 7½ ins/sec

Signal-to-Noise Ratio:200Hz/12 KHz, better than 50 db

Sound quality rating:6 / 10

Long-term reliability rating: 7 / 10

Weight: 50 lbs (22.7 kg)

Additional Details

Description

The Ferrograph series 4 incorporated several new design and cosmetic improvements to counter the rapidly developing reel to reel market of the late 1950s. Stereo was beginning to make a big impact and so Ferrograph made their new machine “adaptable”. Underneath the hinged head cover was a socket that allowed additional, interchangeable heads to be inserted. Another improvement was the tape counter being gear driven instead of the belt drive system of previous series.

Additional Info

Year 1959
Track system Half-track mono, or half-track stereo (Model 4S)
Heads Two
Motors Three
Maximum reel size 8¼ ”
Tape speeds 15 & 7½ ips or 7½ & 3¾ ips
Frequency response (all 3 dB) 15 ips: 40 -15kHz; 7½ ips: 40Hz -12kHz
Wow & flutter 0.2 % at 7½ ins/sec
Signal to noise ratio 200Hz/12 KHz, better than 50 db
Speed stability 0.5%
Bias frequency 53 KHz
Rewind speed 1 minute for full 8¼ ” reel
Audio output power 2.5 watts
Input levels .003v peak at 1 MHz and .1v peak at 500KHz
Speaker(s) 15 ohm elliptical Goodmans 10″ x 6″
Dimensions (with lid) 18½ x 17½ x 9¾ ” ( 470 x 444.5 x 248 mm)
Weight 50 lbs (22.7 kg)

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