Ground Zero Iridium speakers are very good choice for smaller budget. They offer very good price/quality ratio. Coaxials and separate systems are offered with normal and shallow mounting depth.
13 cm / 5.25″ 2-Way Coax Speaker
4 ohm, 70 / 110 W, 60 Hz – 20 KHz
HQPP cone, Resonance free steel basket
13 mm / 0.51 Mylar tweeter