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Sound Rating: 5 / 10 # Owners: 1
Relaibility Rating: 5 / 10 Views: 263

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Technical Details

Brand: Akai

Model:250D

Category:Mid High Fidelity

Application:Consumer

Electronic:Solid State

Country of Manufacture:Japan

Release dates:1971 - 1975

Tracks:1/4 Rec/PB

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

Max Reel Size("): 7"

Number of heads: 3

Dimension: 14 x 14 x 8.9" (358 x 358 x 227mm)

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:No

Voltage(s): 110-120v

Outputs: RCA

Frequency Response:( 3dB): 7½ ips: 35Hz - 23KHz

Wow and Flutter:(less than) 0.08% at 7½ , 0.12% at 3¾ and 20% at 1 ips

Signal-to-Noise Ratio:better than 50 dB

Sound quality rating:5 / 10

Long-term reliability rating: 5/ 10

Weight: 37.5 lbs (17 kg)

Additional Details

Description

Stuck somewhere in between the tail end of the crossfield head (“X”) series and the Glass-Xtal head (“GX”) series, the 250D was, judging by the proudly displayed logo on the head cover, possibly the first Akai reel to reel with a servo controlled motor.
The 250D had 3 speeds (7½ , 3¾ and 1 ips) and had a single auto-reverse function. Transport functions were
relay-controlled and there was a shut off function .Separate line/mic record controls enabled input mixing.
This is quite a rare recorder. not necessarily worth a lot of money, but rather obscure, there being no mention of it in any of my yearbooks or catalogs.

Additional Info

Price When New N/A
Heads Erase, record and playback
Motors Three
Tape Speeds 7½ , 3¾ and 1 ips
Frequency Response ( 3dB)  7½ ips: 35Hz – 23kHz  –  3¾ ips: 35Hz – 18kHz – 1 ips: 40Hz – 9KHz
Wow & Flutter (less than) 0.08% at 7½ , 0.12% at 3¾ and 20% at 1 ips
Signal to Noise Ratio better than 50 dB
Rewind Speed  75 seconds for 1,200 ft
Inputs Microphone: more than 0.5mV;Line: more than 50mV;DIN: more than 50 mV (high), more than 5mV (low)
Dimensions 14 x 14 x 8.9″ (358 x 358 x 227mm)
Weight 37.5 lbs (17 kg)

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