Its good to see the LP info, I will be starting to tune on Saturday I hope, my hogtunes Wet lowers arrive tomorrow

In watching the NVS YouTube / Carlos videos on GZ's...way too many time's, it sounds like the lowest they will play well in his tunes is 85-90,

 

Played with the HZ scale a bit at install. I thought 100hz sounded best and also is safe. I'm no pro tuner by any means, actually fairly new to all this stuff. But with these I set the wattage with a meter and test tone. Did the HZ by ear. they sound good and get very loud (granted I'm not blasting them very much, to show people sometimes, while riding I don't find it necessary to have them that loud). But they have been going strong for the last 4-5 months no problem.

 

The Mmats PA601cx coax are still a great choice for a daily rider.

 

The reason Carlos set his filter so high is because he is pushing way more power to them than the manufacturer recommends. As wattage goes up the HPF has to go up as well or you will shred the speakers. I am running the recommended 150 watts to my GZs and have the HPF set at their recommendation of 50Hz.

I certainly don't claim to be an expert, I'm just listing how I've got mine set and it works well for me.

 

what roll off are you using out of curiosity.

 

Glad I stopped by for some input here before I purchased , was getting ready to just buy some Ground Zero gzcf 6.5SPL's with a bridged soundigital 800.4 to finally update my 14 SG from the RF PBR300X2 amp with Infinity Kappa 62.11i's I put in back in 14 , glad I checked .

 

Sorry brother but this is either false or insane. 50hz? These speakers or any other 6.5" speaker has no business being crossed this low. 70 is even a far reach. 80 is pressing your luck. Putting information out there like this is harmful to any newcomer reading it.

 

As I said, I don't claim to know a lot about this stuff. I plugged in the values from Ground Zero's website into my DSP and they work (and sound pretty good to my ears):

Additional Information

• Power Handling 100-250 watts
• Impedance 4Ω
• Efficiency 93 dB
• Freq Response 50-20kHz
• Mounting Depth 2.83"

 

I've run the gamut on 6.5 speakers. I've yet to find one that will actually play well at the lowest end of the advertised specs. Most have a hard time 80-85hz let alone 50. If you have managed that successfully, my hat's off to you!!

 

Shoot for all I know the things might not be playing anything below 80 Hz. I just plugged those values into my DSP since that was what GZ listed.

I will say that I've got some Kenwood 6.5s in one of my trucks that do seem to play that low. The reason I say that is they sounded pretty muddy at a 50 Hz setting. I bumped up the filter to 70 and they sounded a lot cleaner.

All of this is just my tinkering. I ain't got enough sense to lick myself without falling off the couch and banging my head on the coffee table. My solution was to sell the table.