Speakers
Note: The Monsoon System is rather low powered (30W to 50W RMS). So you'll want a highly sensitive speaker to get good volume out of them.
While this may sound contrary to common sense, speaker impedance is not the most important factor for Monsoon replacement speakers. It is true that a 2 ohm speaker will draw more current than a 4 ohm speaker (hence more power) at the same volume level, that does not mean that the 2 ohm speaker will necessarily be louder than the 4 ohm one. Electrical power is not the same as sound power. Also there is absolutely no truth to the rumor that 4 ohm speakers are likely to blow sooner because the Monsoon amp was designed to drive 2 ohm speakers.
As for specific speaker recommendations, these are ones I use in my SS:
Doors:
Alpine SPS-170A 6.5" 2-way Coaxial speakers (2006 model: SPS-17C2). Note: In the Monsoon system, the door tweeters are driven by the head unit, while the woofers are driven by the amplifier. So these speakers require a small modification detailed elswhere on this forum. These are a great value at $55 a pair on the net. Another popular choice is the Infinity KAPPA 62.7i.
Sail Panel:
Pioneer Premier TS-M7PRS 6.75" Midbass. I like these so much, if my Alpines ever go out, I'll likely put pioneers in the doors also. These are a bit pricey at about $200 a pir, but worth every penny in my opinion. I've never heard them, or read any feedback from someone who has installed them, but the specs on the Audiobahn AMD60Q look like they might work well back here. I'm a bit concerned about the 3.5" mounting depth, though.
Rear Hatch:
Alpine SPS-100A 4" 2-way Coaxial speakers (2006 model: SPS-10C2). Unlike the Firebird setup, Camaro's have only a 4" midrange back here. Dropping in a 2-way speaker here made the single most noticeable difference in the overall sound of the system.
I spent a total of $320 on mine. Some people consider that too much.





