Dual ported box for 2 15" Kicker CVR’s
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=31263
Printed Date: May 22, 2024 at 9:42 PM
Topic: Dual ported box for 2 15" Kicker CVR’s
Posted By: Xgen.m@$t3r
Subject: Dual ported box for 2 15" Kicker CVR’s
Date Posted: April 29, 2004 at 9:29 AM
I need some help on deciding what kind of box to make for 2 15" Kicker CVR's 2003. I was thinking about making a sealed enclosure for them, but think a ported would sound better. Anyone got ideas?
Replies:
Posted By: eurotech
Date Posted: April 29, 2004 at 1:33 PM
It depends on what you listen to, what kind of car its going in, how much power you are running to them, etc. judging by the woofers you've selected I am going to imagine that you want a lot of bass. A ported box will give you more bass, if you dont mind the port noise. If it is going into your trunk...you probably wont notice it. a sealed box will give you more accurate, tight sounding bass. But 15's are pretty sloppy anyways. So I would probably reccomend ported
Posted By: southside
Date Posted: April 29, 2004 at 3:38 PM
also the way i look at it. if u go ported u won't beable to put that much power to the subs. but if u go sealed u can get a lot more power to the subs. so i would go with sealed. it sounds better imo an can throw more power to them wich will equal a lot more bass. an sound quality.
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southsider
Posted By: Xgen.m@$t3r
Date Posted: April 29, 2004 at 10:01 PM
They are going in a 1986 Jeep Cherokee, I know someone that has 2 15" Kicker comps 500 watts each, he has a sealed box (Pretty big box in his truck) and that stuff pounds. He has a Kohler 1200 watt amp hooked up to them. I'm going to have 2 400 watt Jensens hooked up to each one of my subs on each coil. I would buy his box, but its most likely to big to fit in my jeep.
Posted By: djMINIoompa
Date Posted: May 02, 2004 at 8:20 PM
Go with sealed. Ported boxes work best in trunks where the sound can bounce off the trunk lid and sides, hence why people have to dynamat the trunk. In the jeep, there is nothing to reflect against. It will hit the back hatch and disperse into the car. Thats not letting your subs work up to their potential. The sealed will contain the air movement. Also it will hit harder and cleaner. The ported boxes, in some cases, may sound louder, but i find they also hit sloppier and dont sound as clean. Find a sealed box.
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 9:14 AM
Ok, I am thinking about going ahead and getting a box for 3 15" A Kicker CVR and 2 kicker comps
Posted By: DYohn
Date Posted: May 03, 2004 at 9:28 AM
Xgen.m@$t3r wrote:
I'm going to have 2 400 watt Jensens hooked up to each one of my subs on each coil.
Yikes. Two issues here. First, Jensen amps are pure crap and the 400 watts they advertise is more like 60 watts of true clean power. Second, it is a VERY BAD idea to connect seperate amps to each voice coil of a DVC woofer. Unless you really know how to set them up properly, including adjusting internal transistor biases and soldering in new power resisters inside the amp, don't do it. This is a technique best left to SPL competition guys who don't mind buying new woofers after they blow out their 158bd for 30 seconds and fry the voice coils and look at each other and say "Whoa, dude, that was friggin loud!" There are no two amps in the world that are exactly the same, and this is what is required to safely run seperate amps to each voice coil. They must send EXACTLY the same signal at exactly the same time or you will eventually fry one or both windings. No amplifier does this well, and cheap amps like Jensen are about the worst possible choice to try this. Don't do it, spend your money on better, bigger amps if you want high power. Unless of course you don't mind running for a few months then buying new speakers. It's up to you. ------------- Support the12volt.com
Posted By: flatulatta
Date Posted: May 03, 2004 at 9:46 AM
i completely agree ^^^^ dont do that....looks like ur tryin 2 get 800w per sub....sell those jensens on ebay or something and buy you some better amps.... y spend that kinda money on subs if ur just gonna give em crap for power.... sell the 15s buy some cvr 12s and get a jbl 1200.1 ull prob end up saving money and be happy with spl and sq
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 10:39 AM
I've already hooked 1 of my Jensen LXA300 watt amp to 1 15" kicker comp and it sounds great, It dont have the wattage as a kicker amp, but it made them hit.
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 10:42 AM
I had those 2 amps hooked up to 2 10" polk audio subs in a bandpass box and they were hitting hard Lyke Woh. That was my old system though, but I still have them.
Posted By: DYohn
Date Posted: May 03, 2004 at 10:42 AM
Yes, they are efficient speakers and will sound good with as little as 50 watts. The main point was not to trash Jensen (although they are near the top of the list that deserves to be trashed) but to warn you to NOT hook up seperate amps to the dual voice coils! ------------- Support the12volt.com
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 10:54 AM
I have definatly got a 15" kicker CVR coming and if I get a new amp I want it to be able to run both coils and no bigger than 800 watts total, Anyone know a good amp at a good price I could get thats dependable? Then later Im getting 2 15" kicker comps and that takes 500 watts each. Maybe someone could find me a good way of running them at a maximum of 2 amps hopefully, I could hook up 3.
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 11:07 AM
What do you know about this amp: Kenwood KAC-7201
800 watt Total Output at 2 Ohm • Cast Aluminum Heat Sink w/Sandblast Finish • Copper EE-Core Power Transformer?
Posted By: DYohn
Date Posted: May 03, 2004 at 11:46 AM
Kenwood amps are OK, much better than Jensen. How much do you want to spend on an amp? By the way, the Kenwood KAC-7201 is rated at 150 watts RMS per channel. Into a bridged 4-ohm load, it is rated at 460 watts total. ------------- Support the12volt.com
Posted By: Xgen.m@$t3r
Date Posted: May 03, 2004 at 11:57 AM
I'm willing to spend up to $200 That Kenwood amp says its rated at 800 watts total at 2 ohm bridged I also found this 1 to: Rockford Fosgate Punch 501S
500 watts RMS x 1 bridged • variable high-pass/low-pass crossover • wired remote control of Punch Bass Totals at 1000 watts, This one might be to much watts for my sub.. But if I did get it I would put levels way down This 1 costs 199.00 where I see it and it has 1 year warranty
Posted By: DYohn
Date Posted: May 03, 2004 at 5:46 PM
Well, sorry but that Kenwood amp is NOT really rated at 800 watts, that is a "peak" number that they list and is largely meaningless. The only amplifier ratings that are useful are 12V RMS values. The KAC-7201 is rated at 460 watts bridged. Period. You also refer to "keeping the gain down" in order to limit amplifier power. This is wrong. Input sensitivity (aka "gain") is not a volume control and any amp can produce full rated power at any "gain" setting. You cannot limit power that way. For $200 you are pretty much limited to 500 watt amps or less (like the RF you list). Get one you like and be sure to set it up correctly. ------------- Support the12volt.com
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