Changing Tapes in a Mellotron 400

Starting with the M400, the sounds on the tapes could easily be changed by removing and replacing the tape frame. Any combination of 3 sounds per frame could be special ordered from the factory, and it was possible to have custom sounds recorded and placed on a tape frame.

Changing the tapes is a simple procedure as shown below.

First, after removing the cabinet lid, the keyboard assembly is removed by releasing four finger screws, and then lifting it clear of the instrument. If fitted, the tape storage box cover must be removed.

Next, the rear tape clamp bar is released and lifted upward and forward till the tapes are in a vertical position just behind the front tape guides. The bar is then lowered into a position provided behind the front tape guides.

The tape frame is then removed by releasing two finger screws and lifting the entire frame clear of the instrument. The new tape frame is lowered into position and secured.

This view clearly shows the flywheel, capstan, and 35 tape heads.

The new tapes are drawn up and back through the tape guides and over the heads. The tape clamp bar is secured at the back.

Finally, the keyboard assembly is lowered into place over the tapes and secured. The entire procedure takes only a few minutes.

Photos courtesy of Michael Grueterich

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