In the back, behind the amplifier. The newer ones are slightly different; it appears the radiator is behind a grill around the amp.
The rear radiator makes them particularly senzitive to being loated close to a wall behind then - they are better off out form the back wall a foot or three.
On Feb 7, 2013, at 10:16 AM, Tom Fine wrote:
> Someone said Mackie uses passive radiators on its "studio monitors" nowadays. Where is the passive radiator? I thought the Mackie monitors have ports, in the front.