SoundTraxx

Soundtraxx 810053 Speaker     This tiny, high-output speaker is suitable for N-scale and larger models.  Dimensions: 20 x 3.2mm(D) Frequency Response: 475Hz - 9kHz Peak Power: 1 Watt Impedance: 8 Ohms The speaker is...

SoundTraxx 810114 Speaker 30mm Round 8 ohm 1.0 watt     If you have more space, this speaker is great for larger models. Dimensions: 30 x 5.3mm(D) Frequency Response: 325Hz - 20kHz Peak Power: 1 Watt Impedance: 8 Ohms