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Akai 1730D-SS

Discrete 4-Channel Tape Deck (1973-76)

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Akai 1730D-SS


Nothing is lacking in the performance of the 1730D-SS. It is versatile and completely compatible with conventional 2 channel.

Engineered with 4 heads, hysteresis synchronous 2-speed motor, automatic shut-off, pause control and slanted control panel for operating ease.


Track system: 4-track, 4-channel, stereo/multi channel system

Heads: 1 x record, 1 x playback, 2 x erase

Motor: 2 speed hysteresis synchronous

Reel size: 5 or 7 inch reel

Tape speeds: 3 34  7 12 ips

Wow and flutter: 0.15% (7 12 ips)

Frequency response: 30Hz to 22kHz (7 12 ips)

Signal to Noise Ratio: 48dB

Total harmonic distortion: 2%

Crosstalk: 40dB

Input: 40mV (line), 20mV (DIN), 0.4mV (mic)

Output: 1.228V (line)

Output power: 5 watts

Dimensions: 450 x 420 x 240mm

Weight: 17kg


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Reviewed Aug 29th, 2018 by

Beautiful machine.



Paul Co's picture

re: 1730D-SS

I just bought one of these amazing R2R tape decks..I knew it had some problems when i bought it but have figured them out and have repaired it..
The first problem was the Pinch Wheel wasn't touching the Capstan,, that was due to old dried grease on the Pause lever slider.. cleaned that up and it worked great.
The second problem was that the unit wouldn't record in two channel mode.. found the problem with the front Record amplifier circuit board edge connector being broken.. repaired that and it still was having problems on one front channel.. Swapped the rear channel record amplifier for the front one and it worked.. so now I have a bad record amplifier.

This unit was stored for over 20 years and I have to believe that it really just needed some exercise.. it is pristine in both cosmetic and function now.. Love it
I will post a really good clean user manual soon.

re: 1730D-SS

Paul, or perhaps others who have had the capstan pinch wheel problem, I have the same. It appears that the Pause lever slider is preventing the pinch-wheel from touching the capstan and the flywheel is stopping short of the motor and take up reel. It seems that the screwed-in l-shaped piece on the right of the pause lever slider is hitting a metal piece underneath it. Is that the area you cleaned?

re: 1730D-SS

I had the same problem with the pinch roller and capstan. Reading your comments helped me to get it going. Thanks. :-)

re: 1730D-SS

Hi, Paul Co. I have just acquired the same unit, in almost new shape also, and I am wondering if you know how taught the little belt should be that drives the take up reel for playing and fast forward. I am thinking mine may be loose, but not sure. A friend tells me the belts usually snap before they get too loose. Where would I get a replacement, if needed, would you possibly know? I am in USA. Greetings to you in beautiful Canada! (I could also use a head cover). :-)

Paul Co's picture

re: 1730D-SS

Sorry for the delay in relying to this message but I never got it.. I have ordered belts from Ebay and only got the two - one for the capstan and the other for the counter..don't know if the unit uses another one or not ..don't think so..


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