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Marantz HD770

Loudspeaker System (1978-80)

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Marantz HD770


The Model HD-770 High Definition Speakers are a high quality four-way system, with 8 Ohms nominal impedance, and are rated for up to 125 Watts of integrated program material.

They are more efficient than most speaker systems in their category, and are compatible with amplifiers or receivers having power outputs as low as 15 Watts RMS.

The speakers are equipped with crossover controls which allow you to change the response characteristics to achieve a more accurate tonal balance for your listening environment.

The Model HD-770 also features a removable acoustical plug, allowing you to convert the system to a tuned port design.


Type: 4 way, 4 driver loudspeaker system

Frequency Response: 33Hz to 22kHz

Power Handling: 200W

Crossover Frequency: 750, 2300, 5000Hz

Impedance: 8Ω

Sensitivity: 90dB

Bass: 1 x 305mm

Midrange: 1 x 130mm

Tweeter: 1 x 40mm

Super Tweeter: 1 x 30mm

Dimensions: 381 x 673 x 298mm


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Reviewed Jan 23rd, 2020 by lsandev

I just saved one pair of them from trash in very good condition. They still have the folie on the metal parts around the drivers! I had them refoamed and they sound beautiful, I love them! Accurate, clean and crisp, the bass is gorgeous, but tey are quite big...
Great piece of equipment from history!



This website is not affiliated with or sponsored by Marantz. To purchase HD770 spares or accessories, please contact the company via their website or visit an authorised retailer.