20 Most Recent Lanzar OPTI1222D Car Subwoofer Questions & Answers

what r u trying to do ?shake the car apart?Only kidding that a good questin 4 15: woofers in 1 enclosure>?what kind of enclosure ?how much space r we working with ? i use to be a installer , i also built costume boxes.I need to knoew how much space u have is it a car van,pick-up?I think an iso baric enclosure woukld be your best bet, it would take up the laest space. What frequency are you going to be runnig to your subs? what do you want? punchy bass,over the big tom drops?
what amp r you running or should i say amps?
you'll get the highest spl in a sealed enclosure,but i dont think thats what your looking for.you want heavy vibrating soud,am i correct? a band pass box will give that to you in a close space.bass sounds better and louder the further away you get../.give me more info then ill give you a layout.but 4 now this might help or solve your problem

http://www.rockfordfosgate.com/rftech/woofer_wizard.asp
they have all the wiring and p[hyschics and designs of boxes. rating please.

you would have to build a ported or sealed box with a sloped back

I would go with a sealed because ur trunk is small and sealed would be the smaller box. I recommend 2.0-2.75 cubic ft sealed. for vented would be 3.25-3.50 after woofer displacement. Also I would recommend a reverse wedge meaning the woofer would go on the back side of the box not the angel side because u can slide the box in further saving u a little more room. I'm doing that same box now for the same sub but in a Nissan 2001 sentra. My box when done will be 2.78 cu.ft. After displacement. Sealed. 720 watt rms power acoustick 2ohm stable mono block to get longer life out of my sub.

check the leads on the sub itself. sometimes the leads from the plugs to the coils come undone.

that mainly depends on the type of music you will be listening to. If you need clean, punchy bass, use a sealed box. For more growl, and louder bass, use a tube ported or slot ported box. I would not recommend a bandpass box for 15"s but they do make them. I have 2 kenwood 12"s in seperate slot ported boxes with a SPL 1500 watt amp, making about 149Db in a 93 Eclipse. Let me know if this helps :)

most generic pre-gabs tend to be 1.75cu ft, however to be properly tuned, you need the T/S parameters and/or tuning frequency.
Look around on the net, you may get lucky. Lanzar does not have it as a download on their page. Maybe a call to their customer service would net you the information!

For support questions email [email protected]
Foa telephone support 1-800-444-5671

Good luck!!

SPECS

Black P.P. Cone

Specially Treated Foam Edge Suspension

2.5' High Temperature Dual Voice Coil

Magnet Weight: 95 OZ

1600 Watts Max Power Handling

Impedance: 4 Ohm

Chromed Back Plate Cover

Rubber Magnet Boot Cover

I wrote it in my solution to the original question.
You are shooting for a 4 ohm load.
so a single 4 ohm driver, a dual 2 ohm driver, or (2) dual 4 ohm drivers will do the trick.
Bridge the amplifier @ 4 ohms to get the most power.

Hi JJerky,

I suggest we go for 2 ohm to preserve the amp and not heat things up so bad.
Your Subs are Dual Voice Coil(DVC) and 2 ohms each coil. I am going to tell you the wiring to insure you get balanced response from both Subs. We will wire the Subs Voice coils in Parallel to make them 1 ohm each. Then we will wire the Amp to the subs in series to make the total load on the amp 2 ohms. When you have series to both subs each sub gets the same current.


Example of my coding :SUB1VC1+ = Subwoofer 1 Voice Coil 1 Postive terminal.

SUB1VC1+ to SUB1VC2+
SUB1VC1 - to SUB1VC2-

SUB2VC1 + to SUB2VC2 +
SUB2VC1 - to SUB2VC2 -

AMP + to SUB1VC1 +
SUB1VC1 - to SUB2VC1 +
SUB2VC1 - to AMP -

This should give you a good repsonse.

Adjust your Bass Gain down very low at first. Also cut you LPF to about 60 hz. Crank up the volume on a bass test Audio track, Adjust the Bass Gain up unitl you get distortion. The turn it back a little. This is proper setting for your Gain.

Depends entirely on the output impedance of the amplifier and of course if it matches your loudspeakers.

Your 8ohm channel is fried why happened was you ran 2 12s in an 8ohm load and turned it down to 2ohms the speakers was pulling all the power and that made it over heat and when it over heated it fried you're amp. It ain't no good you can't fix that

Bad connection inside either on a connection or on the PCB itself.

When an amplifier causes trouble or otherwise stops working, it is necessary to eliminate external possibilities such as a short circuited output. If nothing external is causing the problem, unless you have a good friend who is an electronics engineer, it will be a repair shop task...

Check your fuses. Check to see if any of the wires are loose. Could be a blown fuse or loose wire. Possibly the following link might be of interest: https://www.youtube.com/watch?v=xMbsieEj0UM

have diagram of any sort?