Terrible problem


Bobbytwonames

Pro Pot Stirrer
Aug 28, 2018
2,067
-157
Yes starting with boost off I tune gain first till I hear distortion, but I never get to hear distortion, it just starts popping till I ease it off
Turn your bass gain to zero and then turn up your HU until you hear it starting to distort. Then, set your bass gain from there. When it starts clipping, then, back the gain off a tad.
 
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Burkie81

CarAudio.com Enthusiast
Apr 6, 2020
24
1
Oneida TN
Turn your bass gain to zero and then turn up your HU until you hear it starting to distort. Then, set your bass gain from there. When it starts clipping, then, back the gain off a tad.
That's what I've done, I'm just not impressed with the output
 
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Burkie81

CarAudio.com Enthusiast
Apr 6, 2020
24
1
Oneida TN
I don't have that kinda money for a box at that point id rather use the dimensions I was given and build one lol
 

shredder2

Enthusiast
Nov 19, 2017
2,526
405
Az
I'd rather use the dimensions I was given and build one lol
To build one you can't use external dimensions without experience and understanding port area/tuning even if its given. Getting the portwalls dead-on takes knowledge. This is a 3 common wall sub/port on face trunkwalled design /w/ minimal materials for 2 Zvx-12's and a 4.5K wired down.

I feel a bit more knowledge would be involved figuring port length than a calc gives. Consider power levels/vehicle/listening habits and you get a custom design. End-correction as well... it's all involved in being accurate, T/S parameters plugged into a modeling program on your power is the best way.
I dislike inaccurate ported enclosures myself... low tuned even
Above Zvx-12's wired low on 4.5K is the plan... space limited and trunkwalled... a custom enclosure is more than volume/tuning.
He wants output in the 30's and under, Sql?.. ok then... it'll need to be tied together tight and deadened to the max but I suppose it could be called Sql. Saturn Aura... its gonna be torn apart at .5
 
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fithwheel

Member
Dec 8, 2017
1,270
313
indiana
So I have an alpine sa60m amplifier new and a new Rockford fosgate p3d412 wired to 2 ohms to match the amplifier both having 600 rms 2 ohms ratings, this said, maybe the sub is just weak, but for 200$ I expected to feel the sub and at best you only hear it and the occasional rattle and then it pops, so I run back to turn down the gain a little and when its " set properly " its non-existent. Extremely irritated. Been following other threads for a week with no positive result. I see videos of the sub review on YouTube and the p3 is shacking the whole car sometimes, but mine is a waste of good materials then. Someone please tell me what your insight might be and one the problem might be. I'm in a 2008 Mazda 3, it's grounded well, powered well, 2 guage wire, the amp never shuts off, the sub just pops and I want to push it way harder but can't. The amp does have a "preamp" set of RCA's, will buying a preamp fix my problem or not ? Anything helps
Stock or aftermarket head unit.
 
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Burkie81

CarAudio.com Enthusiast
Apr 6, 2020
24
1
Oneida TN
What is this one built out of? It would probably come down to build quality. Is it particle board or MDF? How much does that one cost?
The other can be found on eBay two dollars more, I believe it is 5/8 mdf is that the same as your suggestion? I'm leaning toward yours
 

Bobbytwonames

Pro Pot Stirrer
Aug 28, 2018
2,067
-157
The other can be found on eBay two dollars more, I believe it is 5/8 mdf is that the same as your suggestion? I'm leaning toward yours
The Skar one is at least 3/4" MDF. Just get a black sharpie if you don't like the logo. Of course, a custom box will always be best. Maybe, @shredder2 can chime in on if this port dimension will work for your sub.
 
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fithwheel

Member
Dec 8, 2017
1,270
313
indiana
Kenwood dpx500
From your description something sounds amiss. What are your settings on your hu and amp (crossover points,subwoofer level,eq, bass boost, etc) also have you tried reversing the phase or moving the box to a different location?
Personally I’d try to line out what you have now and then see how you like it. The prefab boxes you’re looking at are garbage. Your sub is only as good as the enclosure you put it in. If you want a better box you’re going to have to pay for it or build it. 200 $ sub in a 50 dollar box? Might as well of bought a 50$ sub.
 
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Burkie81

CarAudio.com Enthusiast
Apr 6, 2020
24
1
Oneida TN
From your description something sounds amiss. What are your settings on your hu and amp (crossover points,subwoofer level,eq, bass boost, etc) also have you tried reversing the phase or moving the box to a different location?
Personally I’d try to line out what you have now and then see how you like it. The prefab boxes you’re looking at are garbage. Your sub is only as good as the enclosure you put it in. If you want a better box you’re going to have to pay for it or build it. 200 $ sub in a 50 dollar box? Might as well of bought a 50$ sub.
I have moved the box around it still doesn't please, everything I stays on zero so it doesn't pop, I put the cross over ( or maybe low pass or whatever exactly it is on my amp) to 80 bc I heard that was a good starting point I've had an infinity 12 inch 120.9 watt with an amp for years until it bit the dust I was very impressed with it, I ran it really hard for a really long time, bought this whole set thinking it would be a good replacement but if this doesn't fix it I'm pondering buying another set 120.9 kappa like my last and just be done with it but I would love to get this to work
 
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Burkie81

CarAudio.com Enthusiast
Apr 6, 2020
24
1
Oneida TN
If the prefab doesn't work I'll just have to try to build one even though it looks intimidating getting all the measurements correct, im a 19 year old that mows lawns for a living and going to college next year, I said that to say this, I just can't afford to pay for "the good stuff" so if the prefab ***** I'll be asking for some tips and help on building one lol
 

fithwheel

Member
Dec 8, 2017
1,270
313
indiana
I have moved the box around it still doesn't please, everything I stays on zero so it doesn't pop, I put the cross over ( or maybe low pass or whatever exactly it is on my amp) to 80 bc I heard that was a good starting point I've had an infinity 12 inch 120.9 watt with an amp for years until it bit the dust I was very impressed with it, I ran it really hard for a really long time, bought this whole set thinking it would be a good replacement but if this doesn't fix it I'm pondering buying another set 120.9 kappa like my last and just be done with it but I would love to get this to work
Popping is an issue I haven’t experienced in all my years of messing with audio. Seems like a equipment issue or possibly installation. You do need to turn the subwoofer level all the way up to get the voltage up to its full potential also.
I’d get a 3.5 to rca adapter and hook your phone directly to the amp and see how it acts. Digital multimeter is also a good tool for trouble shooting. Checking grounds sub wiring etc.
As far as the box if you know anyone that has tools and a little woodworking knowledge and as already mentioned you can get help with the design here they are fairly simple to put together.Cost and performance is worth the trouble imo.
 

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