polk db690 what amp?

[98outback]

What do people use with these or think would work with these. I will have four of them on my tower. here are the specs:

6" x 9" 3-way Speakers (Marine Certified)
Power Handling:
100 watts RMS
300 watts Max
Lightweight Dynamic Balance Polymer/Mica Composite Mineral Filled Cone
Marine Certified, perfect for use in marine vessels
1" Liquid-Cooled Silk/Polymer composite Dome Midrange
3/4" Tweeter
High Pass and Low Pass Crossover Filters
Low-mass 2-Layer 25mm Kapton Voice Coil former
Multi-Hole Mounting Pattern
Shallow Depth
Muscular ABS Grilles (Based on MOMO Designs)
Durable Butyl Rubber Surround
Pole Plate Heat Sink
Flat Spider for faster, longer excursion linear motion
Flexible Woven Leads sewn directly into Spider for greater reliability
Polarized Nickel Plated Terminals on PCB terminal board
Stamped Steel Basket finished in rustproof Gun Metal Gray
Frequency Response: 35 - 22,000 Hz
Sensitivity: 93 dB
4 ohm Impedance
1-year Sonic Electronix warranty

Speaker Specifications:

Speaker Size: 6" x 9"
Design: 3-Way Speakers
Tweeter Design: 1" Midrange, 3/4" Tweeter
Tweeter Composition: Silk/Polymer Composite
Woofer Composition: Polymer/Mica Composite
Woofer Surround: Butyl Rubber
Sensitivity: 93 dB
Frequency Response: 35 - 22,000 Hz
RMS Power Handling: 100 watts
Peak Power Handling: 300 watts
Impedance: 4 ohms
Top Mount Depth: 3-3/16"
Bottom-mount depth: 3-3/4"
Cutout Dimensions: 8-1/2" x 5-3/4"
Warranty: 1-year SE

[Buttafewcoe]

I've always been a big fan of 6x9's, esp co-axials. the three ways seemed to sound a little 'tin' (knee). I had 2 mounted in my old runabout and they put out all the sound it needed
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