6x9 suggestions and running 3 ohm speakers

[Gemcoska 10+ year member]

Here's what I'm trying to do:

Run eight (8) 6x9s speakers of 1 4 channel amp. I have my reasons.

The amp:

Powerbass XAX-4160

PowerBass Xtreme XAX 4160FD 4-Channel Full Range Class D Mini Amplifier | PowerBass USA

Full Range Class D amp

4 channels

100Wx4 @ 4 ohms

160Wx4 @ 2 ohms

I'm looking for some 6x9's now that i can run in parallel, 2 per channel.

The power bass L-6903x (100w rms) looks like a good option, but its 3 ohms. I would prefer these if i could run 8 of them at 1.5 ohms on 1 XAX amp

PowerBass Autosound L-6903x Full Range | PowerBass USA

The cadence speakers look pretty good also

The CS3.69 is a safe option with a rating of 175 rms

Cadence Acoustics Momentum Series CS3.69, 6" x 9" Three-Way 700 Watt Speaker System

I would prefer the XS694 (4-way) but its rating is only 75w rms. The XAX pushes out 100W (4ohms) 160w (2ohms). So theres a good chance i'd blow these puppies.

Cadence Acoustics Xenith Series XS694, 6" x 9" 250 Watt Four-Way Coax Speaker System

Maybe someone with some expertise can give a more detailed answer on running a 1.5 ohm load on the XAX amp? Or suggest a better 6x9. The one above ranger from $50 to $70 a pair.

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