SoundTraxx 30mm Round Speaker
 
If you have more space, this speaker works well for larger models.
Dimensions: 30 x 5.3mm(D)
Frequency Response: 490Hz - 10kHz
Power: .5 Watt (Nominal) 1 Watt (Peak)
Impedance: 8 Ohms
 
 
MSRP; $13.95