Ground Zero GZCF 6.5 SPL: HOW much power?
Club Member
Joined: Jun 2017
Posts: 1,149
Likes: 386
From: Indianapolis, IN
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,
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,
Cruiser
Joined: Jan 2020
Posts: 127
Likes: 48
From: Michigan
Have you played up and down on the hz scale on LPF, HPF? I found they could fool you into thinking they could handle more than they really could and still sound good.........for a while. I believe that is a big part of the problem. They are too good at handling power and frequency at first, so we are more lax than we should be on the tuning side and it ends up killing them. At least I have heard the same thoughts here a few times and at a couple rallies this year.
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.
Grand HDF Member
Joined: Sep 2017
Posts: 3,872
Likes: 1,018
From: Southern Virginia
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.
Tourer
Joined: May 2007
Posts: 356
Likes: 24
From: Illinois
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.
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.
Stellar HDF Member
Joined: Nov 2012
Posts: 2,620
Likes: 1,091
From: Eastern IA
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 .
Road Warrior
Joined: Dec 2012
Posts: 1,690
Likes: 246
From: Lakeville, MN
Originally Posted by Hoyt 1911A1
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.
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.
Grand HDF Member
Joined: Sep 2017
Posts: 3,872
Likes: 1,018
From: Southern Virginia
Additional Information
- Power Handling 100-250 watts
- Impedance 4Ω
- Efficiency 93 dB
- Freq Response 50-20kHz
- Mounting Depth 2.83"
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Club Member
Joined: Sep 2014
Posts: 7,618
Likes: 10,437
From: Des moines IA
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!!
Grand HDF Member
Joined: Sep 2017
Posts: 3,872
Likes: 1,018
From: Southern Virginia
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.