Whenever I turn the volume to about 25 on songs that have a lot of highs my door speakers and tweeters cut off. My 6x9s don't because they are connected to an amp. Anyone know what can be causing this?
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The amp is going into protect on the two channels powering the speakers. Turn down the gain on those two channels. You also may want to consider crossing over the speakers a little higher than they are now.
The rating on those speakers are way too high. 6.5's and 6x9's will take 50-100 clean watts tops before they start to break up.
The best solution to get it perfect is....unplug the subs. Turn the gain on the speaker channels all the way down. Then turn up the deck 80% as high as it will go. Play a song. Then increase the gain on the amp until the speakers are as load as they go without distortion. Shut off the car, replugg in the subs and do the same thing. Gain on sub channels all the way down, deck then to 80%, find a bass heavy song, then turn gain up until subs become distorted. If you do this procedure your speakers and subs will be "gain matched" to the proper levels.
If there was a traumatic high-volume event that preceded this problem, I'd guess the tweeter died.
If you can access the connections on the tweeter and you have an ohmmeter, you could disconnect the tweeter and measure across the the terminals. A shorted or open voice coil = dead tweeter. A measurement near the stated impedance is probably ok.
If you have NO ohmmeter, you could carefully connect the output of one amplifier channel directly to the tweeter and just scooch the volume upward slightly from silence while playing something with very little bass in it. If you hear it, the tweeter is alive.
There is a polyswitch in series with the tweeter. when it gets hot from lots of current running through it, it goes high resistance, attenuating current to the tweeter. Remove and bypass the polyswitch if this annoys you, but then you risk blowing the tweeter if you run it too loud!
As far as I know, your sound will drastically improve if you run them +- and +-. Connect the one speaker correctly (+-) and then with the music still playing, try swapping the wires on the other speaker around and see which sounds better + to + or + to -
Hope this helps
Connect the wires of the speaker to a 1.5 volt battery. Plus wire to plus terminal of the battery etc... Only let it touch the battery for a short time! You should hear a pop from the speaker! Put your ear close to the tweeter and see if does the same. If It doesn't, go inside the speaker and connect the battery direct to the tweeter (disconnect it from the crossover unit that feeds it). If it still doesn't pop it's gone and you will need to replace it. If it does it's the crossover that is faulty.
Tweeters are the first to go when the amp is at high volume. So make certain that the speakers don't have a lower wattage than the amp. If they have you must never turn up the volume very high or you will lose the speaker again.
I removed the tweeter and found that I could stick two fingers through the hole and touch the back of the speaker. I was afraid that if I applied to much force I would break something, but after seeing a schematic of the speaker I realized there was nothing else attached except the wires. So, I used some muscle. It took a lot of pressure, but the speaker finally popped out. I was able to tighten the one screw that held down the circuit board in the back and re-assembled the speaker. Problem fixed.
I found that they can hold up to 6 1/2" speakers and 2" tweeters. I'm not sure the specific mounting depth but i can almost assure you there wont be any 6 1/2" speakers that require a whole lotta space