Currently have JLMX500 with ddaw's and at28's on my 2016 sgs with boom HU, lookin for advice on quality lower speakers that match this setup. preference is classic rock, like it loud and clear.I was thinkin hertz 165 or mmats just not sure which model is better suited. any input appreciated.

 

mmats pa601 or dd vo 6.5, both are weather treated, sound good and should pump you up!.
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I have that same set up in my fairing and run the Beyma Pro6.5 in the lowers. They compliment the set up and produce great vocals at 70+!

 

which beymas, if they are the pro6wnds they look kinda square any trouble fitting in lowers, also I assume 4ohm

 

Yes they are, You will need to grind the tabs down and put a 1/4 -1/2 inch spacer ring in but, it didnt take long for me to do it and the results have been great. I rode a lot of long rides this year and the sound that they produce at speed is great. I will admit, they do not produce much bass but they do punch or hit pretty hard! Sitting still, the system sounds like it is missing more bass but, my effort for a 4 speaker set up was to produce a great sound while riding and I think this setup meets my expectations. I will probably add more in the future but, for now, it is a solid sounding system. Oh and yes 4 ohm. Also, while setting them up, I found that if you put more power to the lowers where they stand out a bit over the fairing, at speed (starting over 40mph) they will blend in great. Not much but a hair over the fairing setup.