SONY TC-150

Abstract

The Sony TC-150 is a classic portable reel-to-reel tape recorder, launched in the 1970s. It was highly regarded for its compact and sturdy design as well as its versatile functionality. It supports 3-inch tape reels, features mono recording, and includes a built-in speaker and microphone, with the option to connect an external microphone. It also offers two recording speed settings and can be powered by both batteries and an AC adapter. Ideal for interviews, field recordings, and home use, the TC-150 stands as a significant milestone in the history of Sony's portable recording devices.

Video

Selected Images

Concept

For this project, we blended vintage design with a modern sensibility, combining the aesthetics of a classic tape recorder with new technology. The exterior is made of natural wood and metal, combining minimalist lines and soft tones for a unique sense of craftsmanship. The front layout is intuitive and functional, including integrated speakers, operating buttons and knobs that allow users to play, record and maneuver with ease. The black tape compartment cover design gives the product an added sense of detail, and the vintage buttons and toggles further emphasize the joy of manual operation. This device is not only a tribute to the classic tape player, but also a piece of art and a practical tool in modern homes and creative spaces, suitable for music appreciation, recording creation and decorative furnishings to meet the multiple needs of vintage enthusiasts and design seekers.

User Journey

First, you can open the lid of the tape and put in your favorite tape and close the lid. The tape part doesn't serve any real purpose, it just optimizes the aesthetics and adds a vintage effect. Turn on the power switch and you will hear a power on tone. Then you can play the song.

Users can experience the following features:

• Replacement of music tapes
• Switch Play mode
• Switch On / Off
• Backward 10 seconds
• Forward 10 seconds
• Previous song
• Next song
• Play / Pause
• Volume control

Prototyping Phase

At the beginning of the project, we took a close look at the original products, and we were ready to keep the dimensions of the original items as much as possible and restore the corresponding functions. At the same time, we wanted to realize the function of the original design that you can open the lid to change the tape to increase the interaction with the user, so that the product we drew the top view according to the real size, which was used to simplify the subsequent construction.

Paper Sketching

Beginning with paper sketches was vital in identifying potential solutions, leading to key decisions like sacrificing the original object's ergonomics. This approach allowed for the relocation of two buttons to the opposite side, effectively saving space in thickness.

Component Paper Sketching

Cardboard Prototype

At the outset of the design, we decided to use multiple layers of laser cut wood panels stacked to form our main structure. This made it easier for us to subsequently insert and install the individual components. It also allowed us to cut each layer of wood more easily to reserve space for parts to be mounted.

We determined where and how to place the major components based on sketches during cardboard prototyping.

First Fusion Prototype

We created our fusion file from a sketch drawn on paper. We avoided adding details as early in the design as possible, and we reserved only the space necessary for the main functions.

We used a multi-layer structure, designed the components individually, and finally considered adjusting them to the assembly.

Designed Solutions

Lever

This button allows the user to easily remove the music tape, and it has a warping-like lever attached to its underside; we used a spring to reset the lever mechanism.

Lever Design Problems and Solutions

During the development of the lever mechanism, we encountered several challenges that required innovative solutions.

1. When the button is rotated, or not placed in the correct position again, it will not be pressed and the whole mechanism will not work.
2. There is not enough room for the warping board to move and the music tape cannot be fully lifted.
3. No consideration was given to how the spring is held in place, and there is a good chance that the spring will fall out when it springs up.

Final Lever Solution

We added a hinge between button and lever, and also added lever supports to allow more room for movement. Finally, we will add hot melt adhesive to secure the spring.

Volume Switch Holder

Since we had a volume adjustment knob on our piece, but we only had buttons and not a specific knob. We had to design this structure to convert the two buttons into a knob control.

We have cleverly designed this structure, which allows us to align the two buttons in parallel, maintaining the look of the original product knobs.

Laser Cut Layers

By accurately digging holes in each layer of wood, we reduce the use of screws and hold the pieces more securely.

Additional Views

Closing Magnets System

Technical Specifications

Final Fusion Prototype

Renderings

Resources

References

• Sony TC-150 Cassette Recorder Instruction Manual
• Home of the blender community
• Walkman central

Project Timeline

Future Improvements