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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 7 / 10 Views: 481

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Technical Details

Brand: Akai

Model:1800D-SS

Category:Vintage

Application:Consumer

Electronic:Solid State

Country of Manufacture:Japan

Release dates:1968 - 1972

Original Price: $795

Tracks:1/4 Rec/PB

Speeds: 1 7/8, 3 3/4, 7 1/2

Max Reel Size("): 7"

Number of heads: 3

Dimension: 17½ x 16½ x 9½ " (445 x 420 x 240mm)

Head Composition: Permalloy

Head Configuration: Quad

# Motors: 1

Voltage(s): 110-120v

Outputs: RCA

Frequency Response:( 3dB): 7½ ips: 30Hz to 22kHz

Wow and Flutter:less than 0.12% at 7½ ips. less than 0.15% at 3¾ ips

Signal-to-Noise Ratio:better than 50 dB at 7½ ips

Sound quality rating:5 / 10

Long-term reliability rating: 7/ 10

Weight: 46.2 lbs (21 kg)

Additional Details

Description

The 1800D-SS was a single motor, four-channel ‘Surround Sound’ deck with three speeds and a built-in 8-track cartridge unit which was also a four-channel example. Copies could be from four-channel open reel to four-channel 8-track.
Speed change was effected by use of the two-speed motor and a removable capstan sleeve.
The unit featured four separate input levels, four microphone inputs and two headphone outputs.
It could also be used as a quarter-track stereo deck.
The 1800D-SS featured three heads in the reel to reel section, but in an unusual configuration.
It sported a conventional two-head arrangement of one erase and one combined
record/replay head but an extra full-track erase head was fitted for 4-channel
recording. A tape selector switch for either normal or S.R.T. tapes was provided.

Additional Info

USA Price new $800
Track system
quarter-track, four channel surround sound and quarter-track stereo
four-channel eight-track cartridge
Heads
three: full track & quarter-track erase heads, record/replay combined
(reel to reel section)
Motors
one hysteresis synchronous two-speed motor
Frequency response ( 3dB)
7½ ips: 30Hz to 22kHz
3¾ ips: 30Hz to 15kHz
1 7/8 ips: 50Hz to 7kHz
Wow & flutter
less than 0.12% at 7½ ips; less than 0.15% at 3¾ ips
Signal to noise ratio
better than 50 dB at 7½ ips
Distortion
less than 1.5% at 7½ ips (1,000Hz at “0” VU recording)
Erase ratio
better than 70dB
Bias frequency 100kHz
Inputs
4 x Microphone: 0.4 mV impedance 30 Kohms
4 x Line: 40 mV impedance 100 Kohms
2 x DIN: 5mv
Outputs
4 x Line: 1.228V max. load impedance more than 20 Kohms
2 x Din: 0.4V
2 x Headphones (front and rear) : 100 mV at 8 ohms

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