I put the 4 inch Kappas in my dash and these come with some external crossovers but something isn't right.
I thought that these x-overs help to keep certain hertz away from certain speakers cause my speakers "pop" and "crackle" when a bass note hits, especially when I listen to hip-hop/rap music. Do I need "bass blockers" even though I have these x-overs?
The tweeters are fine but its the woofer that makes the annoying "popping" sounds and it's driving me
I'm running the factory HU and I also rechecked my hook ups and they are also fine.
Maybe I should just keep some tweeters in there or sell the Kappas???

What gives, does anyone know?...

 

C'mon, someone has to know...

 

Possible clipping from not having enough power, there was a post on this a little while back. Do not run those speakers at higher volumes until you find out the problem. If there isn't any damage they might get damaged. Most aftermarket speakers should be powered by an amp or a HU with sufficient power. I'll do some checking and see if I can find the post.

 

here it is read up on this. I have a feeling this might be the problem. . . I could be wrong though. Just trying to help.

https://www.scionlife.com/forums/vie...5b82dc0a6df676

 

also, i think kappas are 2ohm so that might be something there also.

 

You do need Bass Blockers or some equivalent.

Crossovers, in general, are not designed to only allow the frequencies a speaker is capable of playing well through. This is mostly due to cost but also customer preference. You want high volume levels of very dynamic and low frequency music and a 4" is just not capable of producing that efficiently or effectively in the low ranges. Someone else might not care to play music that loud and doesn't want to add subs so they want the speaker to play as much of the range as possible. The manufacturer's, and most custom builders, leave the extremes up to the consumber and just handle the essentials for good sound. The crossover is designed to block the high frequencies from the 4" woofer for control and efficiency. Your 4" is capable of playing much higher than it does but since you have a tweeter to handle the high end there's no sense in having the 4" duplicate the work. Also not having to create as much range makes the 4" more efficient at what is playing and is more stable because it doesn't have as much work to do. The tweeter isn't capable of playing the lower frequencies with any efficiency so those freqs are blocked to prevent distortion and damage from overdriving the speaker.

The easiest way to hear what I tried to explain above about the 4" woofer is to turn the crossover freq up on your sub to it's highest point. That is normally anywhere from 200 - 400 Hz depending on the amp. Turn up something you are used to hearing and listen closely to the sub. You should notice that the sound is not as clean and definitely not as powerful. Slowly turn the crossover freq down and listen to the change in characteristics. The sub will start to sound cleaner, more powerful, and deeper. The sub is capable of playing higher than what we use it for but it's not efficient at it and that takes away from what it is good at.

 

i installed some kappas in my friends altima the other day and they too have this problem. i adjusted the settings on the amp until the weird noise stopped.

 

Thanks for the replies.
The thing is that I'm running the stock HU so why are they "clipping" at around volume #40...