Vintage Speaker Revival

Vintage Speaker Revival


Designer:
Obin Robinson

Project Category:
Bookshelf Speakers

Project Level:
Intermediate

Project Time:
1-8 Hours

Project Cost:
Under $100

Project Description:
Our friend bought an old Zenith Y960 console stereo that was completely dead. All the electronics were fried and the speakers were dry rotted. We decided to conv ert the MR-105 satellite speakers into modern Bluetooth-enabled ones.

Design Goals:
We wanted to keep the Mid Century Modern design aesthetic but make these speakers usable again with contemporary devices.

Driver Selection:
#292-459

Enclosure Design:
Original Zenith MR-105 enclosures with some extra foam we had laying around.

Enclosure Assembly:
We removed the original drivers and put the new ones plus the #325-105 amplifier and associated hardware in it.

Crossover Design:
No crossover.

Conclusion:
These speakers would have ended up in a junk pile unless we rescued them. They now will serve as a functional set of speakers that won’t clash with a Mid Century Modern decor. They sound fairly nice for their size. The Bluetooth amplifier provides more than enough power.

About the Designer:
I am an Active Duty Aviation Structural Mechanic in the U.S. Navy. I have been buying from Parts Express since 1991.

Project Parts List:

Dayton Audio KAB-250v3 2x50W Class D Audio Amplifier Board with Bluetooth 4.0
Dayton Audio KAB-AB L-type Aluminum Bracket for Bluetooth Amplifier Boards
2.5mm Metal Panel Mount DC Jack
Parts Express Gold Plated Banana 5-Way Speaker Wire Binding Post Terminal
GRS 69AS-4 6″ x 9″ Dual Cone Replacement Car Speaker 4 Ohm
Huntkey HKA03619021-8C 19V 2.1A 40W AC/DC Power Supply

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