crack/chh noise with snare hit

Is it possible that my HU (CDA-9830) doesn't like rap music?

Sometimes, volume level doesnt seem to matter, I'll hear a crack/chh noise. It usually occurs with a snare hit. It seems to only happen during a midrange frequency, seems mostly with low freq. lyrics -on a snare hit. Only with rap/techno type music. Some rap songs do it all throughout, some off and on, some not at all! I played a certain song: it played fine halfway thru, after that it started making the noise left and right. I replayed the song from the start -fine, until it got about halfway thru and it started again... With rock or metal it's fine, I can crank it as loud as I want.

Now, I have 18 high-freq. drivers (all tweeters and mid's counted) so I wonder if that's the reason. Gains set fine.

It comes thru the HU's internal amp, but it's wayy louder through the external h/p amp. It seems it does it less with hpf on HU all the way up (160Hz). Can one of you 'big guys' help me out?

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Rap is notorious for crap recording quality. If it happens at the same places, no matter where the volume is set, then it is the recording. I'm willing to be that's what it is.

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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."

Yeah, I thought so. It's Really bad at times.    I just removed my cap this morning. I really think it helped a little. I need to install my better quality rca's soon, I think that'll help too.    As for the song I mentioned in my first post, it was a Tu-Pac remix (crappy, even though its the orig. cd) and still does it after cap removal.

Is this common?

Will installing better rca's help, even though it comes thru the deck power also?

Will making sure all power, ground, and antennae wires behind stereo are away from all signal wires using loom around them help (they're kinda cluttered)?

Thank haemphyst, you're the man!

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

jmelton, I think you should start rethinking your system.  Work towards simplicity, minimizing number of drivers.  And as far as that kechink sshh sound, stick with a few quality CD's and test tones while you're troubleshooting.

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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.

I have come to conclude that it is from crappy recordings. I don't understand why this is happening. I can play the same exact CD in another player, fine.

So this is common, then? Anyone had similar probs? I just want to make sure my HU isn't going out. Anything?

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

stevdart wrote: Work towards simplicity, minimizing number of drivers.

I forgot to mention, this still happened with the rear speaker amp off (and completely disconnected, amp and wiring out of car) -only HU powering 4x6's in fr doors and tweeters on dash.

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

That's ridiculous. Where does one even put 18 drivers? Try one pair of components in the front, a pair of co-axles in the back, one or two subwoofers, a 4 channel amp, and a mono amp.

I guess wiring can't be the issue. Here goes, i'll leave the l/p section out for your sake.    I have Alpine tweeters on dash by pillars -off the fr. HU ch's . Cheapo Soundstorm 2way 4x6's in door, factory loc. -off rr. HU ch's. -Decent front stage, I adjusted time corr. in HU to at least make it sound ok for me imaging wise.

Cheapo Jensen 3way 6x9's and Cheapo Lanzar 3way 6.5's (one of each parallel to amp, 2ohm stereo). One of each on each side off 2ch amp. The 6x9's are in fac. rear deck loc. 6.5's are in board across flipped-down rear seat opening. Amp is 125wrms x2 @2ohms (CEA-'06). All gains set correctly. All h/p speakers are getting no bass freq's to them. Good wiring. A little has changed since this pic, mostly cap removal!!

https://i209.photobucket.com/albums/bb103/jmelton86/system.jpg

I was counting all the h/p drivers, 18 total.      So, is having a bunch of speakers the cause of my prob? Any other ideas? Thanks for the time, Javin

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Sounds like too many tweeters to me in any case.  That kind of system must be very bright and harsh.  This could be causing HF distortion and lobing effects that, when combined with a poor quality recording, punch out the noise you hear from time to time.  It could also be your head unit if the same recording does not make the noise on another HU. Plus, you yourself keep using the word "cheap."  You cannot expect quality sound from sub-standard components, no matter what you do.

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DYohn, this is what I was looking for. I keep the treble right over '0', so as to get the most clarity out of 'cheap' speakers. My midbass is okay, I just need to 'polybag' (aznboi3644) my front door speakers. Other than that it sounds good, to me.   I need -less- high quality speakers.

-I noticed the tweeter on the front left 2way 4x6 is not playing, at all. Possible culprit, having 'uneven' speakers? -Javin 

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

Okay, I removed both tweeters from the front door 4x6's (one was blown, not playing at all). I can now use the fader to get better control better control over the front treble/mid ratio (Fr ch's - Alpine tweeters. Rr ch's - 4x6 woofers). I now just need to get inductors for the 4x6 woofers [I 'polybagged' them (thanks aznboi3644!) while i was 'in there'], i'll do about 2500-3500Hz. Thats prolly about where the Alpine tweets are sitting at. It'll ultimately be bandpassed as it's h/passed @ '160'Hz from the HU.

Anyway, by removing the two tweeters from the 2ways in the doors I think it helped with the chh a little. I think the HU got hot to the point of no return (where the 'chh' came from). -I'll run it 'till it goes...!

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

I replaced the RCAs w/ RF ones. I took out the HU and made the wiring behind it more neat, double checking/tightening all connections. Lastly, I tightened my HU heatsink to dash ground. It was sort-of loose -I think this is what the prob was. The ground from HU heatsink to dash metal could be a little better -I didn't use ring-terminals and the wire needs to be bigger. The ground still could be better. I have the HU grounded thru factory harness and thru heatsink to dash support -this maybe?.

Now the noise is almost nonexistant. Almost. It happens rarely.

Could a loose/dirty ground connection cause this noise on snare hits? Is it a combo of this and crappy recordings?

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

https://www.mtx.com/caraudio/images/DiagramTriAmpSystemSndQul_L.gif

Um, okay. I've seen all those before. What is it you're trying to say?

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

You don't need a million sets of speakers it reduces sound quality. Put the money you spent on all those different speakers and buy one decent set of components and power them properly.

I know this, man! Sound quality is not an issue, here. It actually sounds really good. The rear fill is just that, rear fill.     Today I replaced the rear 6.5's with some in which the tweeter wires are connected straight to the terminal on speaker, instead of through the wooder cone via tinsel leads. The tinsel leads for the tweeters were wearing out and causing them to cut in and out. I think it may be a varying-impedance issue -tinsel leads for tweeters adding resistance. I'm about to go out to the car and put it on the Tu-Pac song that did the crack/chh noise real bad at first...

Well I'm back and I forgot that I gave the CD away! I'll post when I borrow it back and try again. I did, however, try another song that did it badly and the crack/chh noise is gone! It's not official, yet. I'll holler.

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001

This is crazy. It has to do with where the treble is set.

At +2 through +4 the noise occurs. Anywhere below or above this is fine. I tried the 2-Pac song that does the noise nonstop, the noise is completely GONE with treble anywhere out of the +2 through +4 range.

I'll leave it alone at the 'flat' eq setting, where it sounds sweet. Thanks to all.

ADDED: @ 15KHz

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2013 Kia Rio -90a alternator
DDX470HD GTO14001 GTO1014D (x3)
Big3 in 1/0G
1/0G to GTO14001