Alpine 7995 Owners... or anyone

Okay, so I find the x-over button on the HU, thinking hell, what is this going to do since I already have the p.o.s. USB4065 on high pass for 80-90 hz wherever, its all guesswork I guess. So I set the HP on the 7995 to 80hz, guess what, magically tons of distortion and crappy sounding crap disappears. Now I can crank the unit up higher without audible distortion and the voices really scream. Now what I don't understand is if I've lost midbass or if I've lost **** that shouldn't have been coming through in the first place.

Angry. Pissed. MUST. KILL. US ACCOUSTICS.

Thats good to know, when I get my 7998 installed I'll be sure to check out the x.over if I'm not happy with my sound. Hopefully I wont have that problem with the Avionixx though. You messed with the time correction yet?

Hmm, I never tried using the headunit's HP filter when I had my US Acoustics in. Maybe that was part of the reason why it sounded so bad....

LoL. It made a ton of difference, but I can't figure out why. :) The time correction is absurdly awesome. Plac was right in his statement that you can just 'see' the sound moving towards the center of your car.

Only question now... what am I missing, stuff I shoudl be or stuff I shouldn't. I have no idea what a good system actually sounds like :) I am enjoying it, but should I have more punchy midbass? Do I have it w/o realizing it? Lord knows I don't feel it... I'll have to swing by a show or something

Ummm, hmm. Let me get this right... You have the high pass frequency set to 80 HERTZ???

That should be like your Low Pass settings. I have an Eclipse, but I know that on my unit the range of frequency control you have on the sound is from like 32 Herts to 20 KilaHertz (20,000 Hertz). For my highs, I have the low cuttoff point at like 8,000 Hertz. Then I have the subs (low pass), set to like 150/180 or so I think.

Basically you want your highs going to the high pass whatever... your tweeters. So you should be giving them like the 8,000 to 20,000 frequency range.

I can't imagine why you'd have your high pass set so low.

BTW, **** distortion.

Originally posted by Gandalf
Thats good to know, when I get my 7998 installed I'll be sure to check out the x.over

I have that HU and love it. Have a lot of tuning work to do though.

Originally posted by seven6ty
Ummm, hmm. Let me get this right... You have the high pass frequency set to 80 HERTZ???

That should be like your Low Pass settings. I have an Eclipse, but I know that on my unit the range of frequency control you have on the sound is from like 32 Herts to 20 KilaHertz (20,000 Hertz). For my highs, I have the low cuttoff point at like 8,000 Hertz. Then I have the subs (low pass), set to like 150/180 or so I think.

Basically you want your highs going to the high pass whatever... your tweeters. So you should be giving them like the 8,000 to 20,000 frequency range.

I can't imagine why you'd have your high pass set so low.

BTW, **** distortion.

Umm... Audio forum privledges... REVOKED!

I don't have time to explain... just... I don't know what. I thought I didn't know anything... jeezh.

Originally posted by seven6ty
Ummm, hmm. Let me get this right... You have the high pass frequency set to 80 HERTZ???

That should be like your Low Pass settings. I have an Eclipse, but I know that on my unit the range of frequency control you have on the sound is from like 32 Herts to 20 KilaHertz (20,000 Hertz). For my highs, I have the low cuttoff point at like 8,000 Hertz. Then I have the subs (low pass), set to like 150/180 or so I think.

Basically you want your highs going to the high pass whatever... your tweeters. So you should be giving them like the 8,000 to 20,000 frequency range.

I can't imagine why you'd have your high pass set so low.

BTW, **** distortion.

please learn what you're talking about before trying to tell him how to tune his stereo.

Originally posted by DevlynSyde
Umm... Audio forum privledges... REVOKED!

I don't have time to explain... just... I don't know what. I thought I didn't know anything... jeezh.

DAMN!
beat me to it, haha

What the hell are you people talking about???

Originally posted by seven6ty
What the hell are you people talking about???

I think the real quesion is, what the hell are you talking about?

Mids are supposed to be crossed ~80Hz, nothing in car audio should be HP as high as 8kHz, even tweeters

Ehhhh... sure buddy.

Read the 800 threads in this forum then move onto strictly audio forums, then come back and post answers, k, thanks, bye.

LOL

do some research
I highly doubt you'll find ONE component set that has the tweets crossed at even 6k, much less 8k. Mids are generally HP at 60-100 and LP at 3-4k. At 3-4k it switches to the tweet and they play everything above that.

Originally posted by seven6ty
Ummm, hmm. Let me get this right... You have the high pass frequency set to 80 HERTZ???

That should be like your Low Pass settings. I have an Eclipse, but I know that on my unit the range of frequency control you have on the sound is from like 32 Herts to 20 KilaHertz (20,000 Hertz). For my highs, I have the low cuttoff point at like 8,000 Hertz. Then I have the subs (low pass), set to like 150/180 or so I think.

Basically you want your highs going to the high pass whatever... your tweeters. So you should be giving them like the 8,000 to 20,000 frequency range.

I can't imagine why you'd have your high pass set so low.

BTW, **** distortion.

Ithink you are confused. The eclipse's x-over controls stop at 10000Hz and start at 63Hz

You are probably confusing the EQ settings w/ the x-overs.

In any case, dont be a smart ***, you are wrong. All of us who tell you you are wrong 1)cannot be wrong, b) we have "our share" in car audio.

In any case, if you think you are right and have setup ypur system according to the way you described, I for sure would not want to even remotely listen to it. Care to expalin where the 180Hz to 8000Hz frequencies are in your setup? And I assume since you only list sub and tweeters, you have no mids?

You're ALL wronggggggggggggg.

But anyways, here's how I have mine set up and if anyone can come up with a more intelligent answer than "You're an idiot", go ahead and correct me, give a recommendation, or whatever along those lines. Because right now you're all acting like immature little teenagers who are squabbling over "It's 4,581 Hertz, not 4,581.253490".

For my subs, I have the HPF set to about 125 Hrtz, when the slope starts. Then for the mids, I have the LPF set to kick in at about 225 Hrtz, and the HPF set around 10K I believe. Then on the tweets I have their LPF set to about 8-10K.

I've tried to set this up in relation to the full Parametric EQ band, which has controls for frequencies from 64 Hrtz to 20KHrtz... Giving you control over the frequencies from 32 Hrtz to 24KHrtz, I believe it adds up to be.

And then I have the Parametric EQ set up with the lower frequencies going to the mids more or less cut off, so they don't overlap with the sub woofer frequencies. (Don't really care for the mids much in my music anyways, most of the time.)

One question though, the _dB/Octave controls the degree of the slope for the cutoff point in the crossover... right? My friend was just trying to tell me that that is the number by which the signal is either boosted or reduced by.

First off, the subs go up to 125hz... okay...

Second off, you have absolutely nothing playing btwn 125hz and 225hz... ??

Third off, don't really care for the mids much in your music? Don't want the mids to overlap the subs?

Recommendations, subs should be cut off more around 80-90hz, where the mids should also cut off at that same range.

Oh, and what equalizer are you running?

in regards to your 1st post devlyn, the pre-outs are not being clipped as easily w/o trying to play sub freq. low freq. clip your system out easier than any other. you prob haven't lost too much m/b (can't hear sys so just guessing) it's just cleaner signal.

Second off, you have absolutely nothing playing btwn 125hz and 225hz... ??

Yes, I do have something playing in that frequency range. If you noticed, I said that is where the cut-off point BEGINS, so at 125hz the Xover begins the slope to cut off the bass signal... Meaning it steadily decreases to zero. It does not have a straight cut off at 125, it has a slope which kicks in to begin to bring it down to zero.

Same with the mids and their LPF at 225. They gradually are cut off at this point, not a straight cut off point.

And the Eclipse unit I have has a Parametric EQ built into it... Along with the cross overs, time correction and phase adjustment.

Hmm, I think I misunderstood earlier. I think I thought the guy was saying he had his mid's HPF set to 80 Hz, but I think you guys were talking about the HPF for the bass? That's why I couldn't understand anyone having their HPF for their mids set to 80 Hz. The only thing he mentioned was something about his midbass, and I just read that as mid's...

I musta been high or something. Except I still think that SE-R #2 guy is talkin out his *** or something. (I think he has the HP and LP switched around maybe.)

Originally posted by seven6ty
Hmm, I think I misunderstood earlier. I think I thought the guy was saying he had his mid's HPF set to 80 Hz, but I think you guys were talking about the HPF for the bass? That's why I couldn't understand anyone having their HPF for their mids set to 80 Hz. The only thing he mentioned was something about his midbass, and I just read that as mid's...

I musta been high or something. Except I still think that SE-R #2 guy is talkin out his *** or something. (I think he has the HP and LP switched around maybe.)

Sorry, what you say does not make sense at all. HighPass on the subs and LowPass on the mids and highs? If that's the way you indeed have it, you have it switched around.

No one is trying to be an *** here, but you seem to be acting like one. You have the opinion of at least 4 different people, yet you say we alre all wrong. I really do not feel like explaining in depth since you dont seem even remotely willing to accept you are wrong or interested to learn. One thing about the slopes... the way you have it, the output in the 125-225Hz is just GREATLY reduced in your setup, by at least 12db. Have you ever wondered WHY in a component speaker set the crossover point is, lets say, 3000Hz for BOTH drivers? (and not, lets say again, 2500Hz for the woofer, 3000Hz for the tweeter?) Where the LP is set at that's where the HP should be set at too. I am sorry, I would want to be more helpfull, but I dont think you would even listen.

Post your original and the following post to the forums below and see what you get for an answer:

http://forum.elitecaraudio.com/index.php

http://www.caraudioforum.com/index.php

No one is trying to be an *** here, but you seem to be acting like one. You have the opinion of at least 4 different people, yet you say we alre all wrong.

It was a joke.

And if you think I'm unwilling to learn then perhaps you missed the part where I welcomed anyone to give constructive info on it, rather than the standard "you're an idiot. *Snicker*Snicker*" line which seems to be so popular around these parts.

BTW, DevlynSyde, what is the question you wanted answered by the 7995 owners? I did not see a question for us in the topic, lol :D

Have you used the damn HPF and noticed a huge difference btwn not having it on, and having it on, even when the amp is crossed at the same frequency. Thats the question :) I think the USB amps HP filter is just ****, but I'm trying to find out if thats the case or if the HUs HP filter filters out a little too much.

Originally posted by DevlynSyde
Have you used the damn HPF and noticed a huge difference btwn not having it on, and having it on, even when the amp is crossed at the same frequency. Thats the question :) I think the USB amps HP filter is just ****, but I'm trying to find out if thats the case or if the HUs HP filter filters out a little too much.

NO :D

I cross my fronts at 65-70Hz on the amp, so the 80Hz on the Alpine is of not use to me. But I would not be surprised if the USB's x-overs suck balls. In any case, if using the 7995's x-overs gets rid of the problem, then I guess it is fine. And I I am confident the 7995's x-over does not "overfilter."

Hrm... I'll just be happy with it atm then :) Either way, it gave a huge jump in quality, so whatever. I'll still try the old RF amp again, I've definately got a much better ground now... plus I'll finally be putting in the amp rack and sealed box tomorrow I think since it is warming up. Plus after another shopping trip for new clothes (I love the 80% clearance sales) I'm feeling a little poor so at home activities are definately better :)

Originally posted by seven6ty
Hmm, I think I misunderstood earlier. I think I thought the guy was saying he had his mid's HPF set to 80 Hz, but I think you guys were talking about the HPF for the bass? That's why I couldn't understand anyone having their HPF for their mids set to 80 Hz. The only thing he mentioned was something about his midbass, and I just read that as mid's...

I musta been high or something. Except I still think that SE-R #2 guy is talkin out his *** or something. (I think he has the HP and LP switched around maybe.)

yep, that's all I do is talk out my ***

And I'm not the one who has HP and LP switched
HP = high pass, it lets the highs pass and cuts off the lows
LP = low pass, it lets the lows pass and cuts off the highs

I'm not even going to start with how you have your setup tuned, but there's no way it sounds even remotely decent if you do actually have it running like that. Nice gap you have there from 125-225, your setup sounds like it has the frequency response of Bose, lol.