BKOLFO4

Maybe I missed something. . .explain please.

from the quick pics I found, it should have an additional connection other than just the battery charge wire. If this connection is not pluged in, or does not have power running to it, the alternator will not "start up".

Sounds like it is just running on battery voltage. Check the ignition exciter wire and make sure it is 12 volts with the key on. Maybe you blew the fuse. . .

Give them 30 minutes of good hard playing time and you should hear some difference. MX is a totally different woofer from a BL. Not sure if you will ever get the same low end with BL's you had with MX's.

I assume from this post you have the UPS delivery all straightened out with Scott. . . FYI - Scott told me it is now #108.

I tune at 34-35 and don't have any problems with the rap music I play. . .

Also need some max dimensions to play with. Hard to design something if you do not know if it will fit

No need to repeat the post from your last post. But since we are here, gain up halfway up does NOT mean anything since we do not know what the halfway setting is and do not know how much voltage your headunit puts out. And it darn sure does not mean the amp could only play at half output. The gain is to match input voltage with your headunit. If the gain is set at 1 volt, then the amp will make max power with 1 volt on input. If the gain is set at 10 volts, then the amp will make max power with 10 volts on the input. You either have to have a good ear for setting gain, or measurement equipment. The only way you can use it to limit output is to know your headunit's max output and set it at a voltage above that. As far as other settings, per your box design, the HPF should be around 28-30 Hz. Higher if it looks like the sub is being mechanically challenged LPF is set to what you think sounds good. Normally somewhere below 100 Hz Intelli-Q to minimum. Good luck!

Ship it to: Fi Car Audio 5480 Cameron St #108 Las Vegas NV 89118 Include contact info and return shipping address along with a description of the problem so they know what it is when they receive it. Brian

PM sent.

He didn't. I already explained it will not just be a BTL recone kit. I am working with him to get the correct parts for it. Brian

Welcome fellow Texan!!!

On a side note - I had the RE calc compute port length wrong a couple of times, so I quit using it. . . It is so easy to make calculations by hand. 1. You know how much net airspace you want. 2. You know how much port area you want. 3. By knowing where the port will be, you can determine the dimensions the port opening needs to be to get the correct port area. 4. Plug in the net volume and port size into a good port length calculator to get the length. 5. Find the port displacement (take into account the port walls). 6. Add the NET volume, driver displacement, and port displacement to get the GROSS volume. 7. Find dimensions for the overall box that will give that gross volume. When finding overall dimensions, keep in mind the port size you chose. Also make sure the port does not end up closer to the back wall than the port width. If the distance from the end of the port to the back wall is equal to the port width or smaller, you will have to make adjustments somewhere. . .L shaped port, shorter port, change overall dimensions, etc.

The rear portion is 4", the total port length is 27.25" That box is just under 8 ft^3 tuned to just under 32 Hz. Should work great! Brian

PM sent. . .

As long as you received paypal confirmation, you should be ok. The subs take a few days to build, since they are built to order. I bet you will get a tracking number shortly. Brian

Does your paypal account confirm the payment was sent?

Never listened to the AA15, but looking at the specs, I would take the BTL. I know I am partial to Fi/AA, but the BTL has more motor force, solid pole with additional cooling channels, more XMax, and definitely more power handling. BTL does not have warranty, but if you have a problem with a BTL, it is more than likely going to be a user error/problem that is not going to fall under just about anyone's warranty. I have run BTL's well beyond the designed limits and NEVER had a problem with one! Brian

Opti4000D. Nice amp. They were even nicer when you could get reburbs direct with 2 year warranty for $680. Now it is $902 with 1 year warranty.

Started thinking about those (16) 10's and had to post a picture. . .

4 ft^3 is not really large for a Q 15. Sounds just right. 1 ported would be my vote. As long as the box design is correct it should be ok on that amp (not that user error could not still destroy it). Also - It does not look like that amp has a subsonic filter. You could get the 20 Hz HP F-Mod and put in line on the RCA. Brian

Is that 1200 watts for the pair (600 each)? What amp do you have that does 1200 watts at 4 ohms and only 1400 at 2 ohms? I have done the 1 driver ported vs. 2 drivers sealed comparision with several systems. . . The last one I did was (16) 10's sealed vs. (8) of the same 10's ported. 3200 watts on the 16 drivers, 1600 watts on the 8 drivers (200 watts to each speaker in both setups). I would take the (8) 10's ported any day for daily music and loudness. (16) 10's was not quite as loud, but had better REALLY deep bass (I had dolby digital in the vehicle, and the 16 sealed drivers did better with some movies). That was also because I did not run the SSF with the sealed setup. As far as sealed being so much "cleaner", a correctly designed ported box will sound awesome. Most amps come close to doubling their power going from 4 to 2 ohms, and also become less efficient. If an amp does not make as much power it will not be as hard on the car's electrical system. If your amp in fact makes 1200 watts @ 4 ohms and 1400 @ 2 ohms, you will not see much difference. Brian

PM replied.

I would start with that HPF on 28-30 and increase as need to control the excursion. . . Brian

Until you know how big the box can be, it is going to be nothing more than a guess on which one will be better. If you do not have enough airspace for four 12's, then three 12's is going to sound better. . . Brian