20-176
- 2" Round Speaker, Metal Frame
20-224
- 1" PM Round Speaker, Plastic Frame
20-226
- 2" Round Speaker, 0.5W Peak Power
20-227
- 2.25" Round Speaker, 0.4W Peak Power
20-228
- 2.5" Round Speaker, 0.3W Peak Power
20-229
- 2.75" Round Speaker, 0.5W Peak Power