Technical Details
Brand: Akai
Model:X-1800 SD
Category:Mid High Fidelity
Application:Portable
Electronic:Solid State
Country of Manufacture:Japan
Release dates:1968 - 1971
Original Price: $200
Tracks:1/4 Rec/PB
Speeds: 1 7/8, 3 3/4, 7 1/2
Max Reel Size("): 7"
Number of heads: 3
Dimension: 15 x 13½ x 9½ " (381 x 343 x 241mm)
Head Composition: Permalloy
Head Configuration: Stereo
# Motors: 1
Voltage(s): 110-120v
Outputs: DIN
Frequency Response:(all 3 dB): 7½ ips: 30-23kHz
Wow and Flutter:reel: < 0.12& at 7½ , < 0.15% at 3¾ and < 0.2% at 1 ips. cartridge: < 0.25%
Signal-to-Noise Ratio:reel: better than 50 dB cartridge: better than 45 dB
Sound quality rating:5 / 10
Long-term reliability rating: 5/ 10
Weight: 37.4 lbs (17 kg)
Additional Details
Description
A combination stereo reel-to-reel and 8-track cartridge recorder with the ability to transfer from tape
to cartridge.
The Akai patented cross-field recording system plus one micron gap heads gave very good frequency response and low distortion. A two-speed induction motor was used. three speeds were provided (1 7/8, 3¾ and 7½ ips) with an optional fourth speed of 15 ips available with a special capstan and pinch roller adaptor kit.
Other features included: pause control, straight-through amplifier mode, monitoring and input mixing.
Audio output was 4 watts per channel RMS into two internal 4″ speakers.
Akai also made a matching pair of remote speakers.
Additional Info
Price when new (in the UK)
£199.60
Heads
Three
Motors
Single
Tape speeds
7½ , 3¾ and 1 ips
Frequency response ( 3dB)
7½ ips: 30Hz -23kHz
3¾ ips: 30Hz -18kHz
1 7/8 ips: 30Hz -9kHz
Wow & flutter
reel: < 0.12& at 7½ , < 0.15% at 3¾ and < 0.2% at 1
ips;
cartridge: < 0.25%
Signal to noise ratio reel: 50 dB
cartridge: 45 dB
Rewind speed
reel: 150 seconds for 1,200 ft
cartridge: 230 seconds for 300 ft cartridge tape
Audio output power
Four watts RMS per channel
Speakers
Two 4″ speakers
Inputs
microphone: 0.5 mV/50Kohms
line: 60 mV/150 Kohms
Outputs
line: 1.23V (“0” VU)/100 ohms (required load impedance > 20Kohm)
headphones: 150 mV/8 ohms
extension speakers: 6 watts 8 ohms
Dimensions
15 x 13½ x 9½ ” (381 x 343 x 241mm)
Weight
37.4 lbs (17 kg)