KU40

The one with Luke Wilson where the lady sees the face of Jesus in a stain on the side of his house. Utterly boring.

What box are your CVRs in now? Is that Kenwood 1000 watts RMS or 1000 watts max? two 12s will likely be louder than one 15.

lol thats true. i dont know any forum where this term makes so much trouble. That's because it's so subjective. If he wants more low end and already has a ported box, that means he likes an overly exaggerated low end, which means a big hump in the frequency response between 30-50 hz. To somebody else, "SQ" means having a completely flat frequency response over the subbass range and likely using a sealed box to do so.

Yes. Although, IIRC, it's not on top of the cone, it's in place of the cone in that area.

Measure the voltage at the amp when as you turn it up and when it shuts off. Also measure the resistance of the load from the subs at the amplifier (all wired together).

ok. So it only operates the head unit's internal amplifier. Since you're using the memphis amp to power all of your speakers and have none hooked up to the head unit, you can turn the amplifier gain setting to off.

Have you checked the coils with a DMM like Dan208 mentioned?

For some reason I thought you had a 4 channel that you were bridging a couple channels to for the sub, instead of a 5 channel. The crossovers on the amp for the mids and tweeters should be set to highpass around 80 hz or so (can play with this up or down). The passive crossovers that you got with the components likely have a highpass filter for the tweeters and a lowpass filter for the mids. However, the mids need to be bandpass filtered (lowpass at 3-4 khz in the crossover and highpass at 60-100 hz by another source, in this case the amp), so you'll need to use the highpass crossover on the amp to do that. Not sure what the amplifier gain setting on the head unit does. Why don't you tell us what the manual says for it? If you aren't hooking up any speakers to the rear channels of the amplifier, the gain and crossover settings don't matter. If you are using the subwoofer preout on the head unit, make sure to set the gain for the sub with that subwoofer level on the head unit all the way up.

Have to describe what you mean by cleaner or else we can't help you at all.

With things like that which are on and off in weird intervals, it's almost always a bad connection. You probably just fixed the connection on the bass knob when you were messing with it before you put in the new sub.

Your crossover switch for the sub channel should be on LPF, not HPF. Set the crossover at about 80 hz, but play around with it until the sub sounds the best. If your box is sealed, you can leave the subsonic either all the way down or turn it off if there is a switch for it. For the gain, just turn it up until the sub starts to distort at your maximum listening level on the head unit volume.

My gf had a jeep in which after a year of owning they looked under it and both rear shocks were not hooked up to a lower bracket. Who knows how long it had been like that.

What needs tweaked

Ah-ha! So if you are running an amp with an internal fuse of, say, 150 amps, but you are running 1/0 AWG to the amp that is rated for 300 amps, you should put a 300 amp fuse in the wire instead of a 150? Just checking. I would just put a 150 in the wire. That's just extra protection over the 300 amp fuse as it will blow even sooner than the current capacity of the wire. You can always go lower than the rating of the wire, just not higher. I have a 100 amp fuse near the battery on my 1/0.

They probably make it so that you have to send it into them and cannot grab some off-the-shelf recone.

Subwoofer Sensitivity - SSA Car Audio Forum There is the formula for sensitivity. What will happen when Fs decreases? Sensitivity will decrease, not increase. Same with Vas. Sensitivity will move in the same direction of those two terms. If one of those two go up, so does SPL. If one of those two go down, so does sensitivity. Sensitivity is inversely correlated to Qes...as Qes increases, sensitivity will decrease. It's all a basic consequence of Hoffman's Law. If you want low frequency extension in a small enclosure (low'ish Fs, small'ish Vas, higher Qes) sensitivity will necessarily be sacrificed. Whoops I wrote that if vas increases, sensitivity increases. Not sure where I got that, apparently not from a formula.

2 12s or 1 15 - SSA Car Audio Forum - Page 2

Stop posting audio-related threads in the newbie sign in section. And start making better initial posts in threads, your total lack of helpful information to extract decent and helpful responses is not going to cut it.

A lot of times you don't burn up just transistors but resistors and/or diodes as well. If you don't have the equipment to test each part, it may be best to leave it to a pro. Does the amp still have a warranty? If so, opening it up voids the warranty. If not, may as well open it up just to see what you see. If you decide to sent it in, db-r is the regular remanufacturer.

Then have somebody else listen as you set the gain.

Well there you go. Like I said, sealed boxes will be louder at very low frequencies, sub-25 hz. But for the ported box you also have to take into consideration that you will need a subsonic filter a few hz below tuning, which will make the actual rolloff even steeper. So even though the model shows 20 hz, it will likely be bumped up to 25 hz or so where the sealed box takes over.

I was going to bring up sensitivity last night in a reply but got distracted. Higher Vas increases sensitivity, lower Fs lowers sensitivity.

Ported boxes generally have a 12-24 db/octave (or more, depending) rolloff below tuning frequency. As I said, model up a ported box vs. a sealed box in a program and you will see.

Not cooling methods. Your best bet would be to download a box building program and look at impedance graphs in various enclosures for a given sub and see for yourself. But modeling up my sub, ported box size plays little part in maximum impedance rise. However, increasing tuning frequency increases the bump in impedance near the tuning frequency, but the upper impedance hump, 5-10 hz above tuning, decreases with increased tuning frequency. In a sealed box, impedance rise is higher in larger boxes and also moves lower in frequency as box size increases.

x2. Most manufacturers make several mono amps and it seems the most common are a smaller monoblock that's 5-600 watts @ 2 ohms and a larger one at 1000-1200 watts @ 1 ohm.