Anybody familier with the alpine 9887

[deejayarecue 0]

Hey guys,

I'm not 100% sure but I don't believe there is a bass/treble option on the 9887, only a graphic or parametric EQ (you can choose which in the audio menu). The 9886 might have bass / treb but the 9887 is a more "advanced" head unit so to speak.

The multiEQ button has to do with the imprint processor. Without imprint that button has no function.

I dont even know the difference between grafic and parametric. would getting the IMPRINT processer be worth it you thinhk?

I would probably say no only because once imprint does it's magic, it supposedly locks you out of everything. As in, it might low pass your subs at 150hz or do some funky EQ and you can't manually adjust that.

I suggest playing around with the graphic eq first. Per the manual these are the center frequencies the graphic eq covers.

Band-1 (63 Hz) / Band-2 (150 Hz) / Band-3 (400 Hz) / Band-4 (1 kHz) / Band-5 (2.5 kHz) / Band-6 (6.3 kHz) / Band-7 (17.5 kHz)

Go in, boost a little one by one and see how it affects the sound to your ear.

[stevemead08 752]

Hey guys,

I'm not 100% sure but I don't believe there is a bass/treble option on the 9887, only a graphic or parametric EQ (you can choose which in the audio menu). The 9886 might have bass / treb but the 9887 is a more "advanced" head unit so to speak.

The multiEQ button has to do with the imprint processor. Without imprint that button has no function.

I dont even know the difference between grafic and parametric. would getting the IMPRINT processer be worth it you thinhk?

I would probably say no only because once imprint does it's magic, it supposedly locks you out of everything. As in, it might low pass your subs at 150hz or do some funky EQ and you can't manually adjust that.

I suggest playing around with the graphic eq first. Per the manual these are the center frequencies the graphic eq covers.

Band-1 (63 Hz) / Band-2 (150 Hz) / Band-3 (400 Hz) / Band-4 (1 kHz) / Band-5 (2.5 kHz) / Band-6 (6.3 kHz) / Band-7 (17.5 kHz)

Go in, boost a little one by one and see how it affects the sound to your ear.

Would adjusting these affect just the door speakers or the sub too? would it be better to leave the EQ on FLAT and just use my sax50.4 to do the adjusting. im not running active and i have all four doors in use?

I dont really want to add bass to my doors and treble to my subs...

[deejayarecue 0]

Hey guys,

I'm not 100% sure but I don't believe there is a bass/treble option on the 9887, only a graphic or parametric EQ (you can choose which in the audio menu). The 9886 might have bass / treb but the 9887 is a more "advanced" head unit so to speak.

The multiEQ button has to do with the imprint processor. Without imprint that button has no function.

I dont even know the difference between grafic and parametric. would getting the IMPRINT processer be worth it you thinhk?

I would probably say no only because once imprint does it's magic, it supposedly locks you out of everything. As in, it might low pass your subs at 150hz or do some funky EQ and you can't manually adjust that.

I suggest playing around with the graphic eq first. Per the manual these are the center frequencies the graphic eq covers.

Band-1 (63 Hz) / Band-2 (150 Hz) / Band-3 (400 Hz) / Band-4 (1 kHz) / Band-5 (2.5 kHz) / Band-6 (6.3 kHz) / Band-7 (17.5 kHz)

Go in, boost a little one by one and see how it affects the sound to your ear.

Would adjusting these affect just the door speakers or the sub too? would it be better to leave the EQ on FLAT and just use my sax50.4 to do the adjusting. im not running active and i have all four doors in use?

I dont really want to add bass to my doors and treble to my subs...

Depends where you xover your subs and which slopes you use. I cross mine over around 63 at 24db slope. So for example if I were to boost Band 1 (63 HZ) it would affect my subs (almost like a bass knob since the "Q" of the graphic eq is rather wide I think). 150 is so far up from there it should have no affect on my subs, only my doors.

But if you were to cross over subs around 120hz (haha) with a 12 db slope, then 150 may just affect your subs a very small amount.

Having said all that, do you have a vague understanding of crossover slopes and frequencies and what-not?

[stevemead08 752]

I know enough to get it where it needs to be but also enough to probably get into problem. I could probably get it good if I play with it. I know where I need to cross over and I know how the slopes work. It just really struck me funny not to have bass and treble. I've just never had a headunit this adjustable.

[Impious 1,476]

What are you trying to "fix" that you want the bass/treble controls?

Or was it just curiosity of why they weren't there?

Helpful hint when dealing w/ EQ's: They should primarily be used to cut bands, not boost bands. And boosting an EQ band can potentially introduce clipping. For example, if you turn 63hz up by 3db, it will require the amplifier now output 2x the power at 63hz.

[stevemead08 752]

What are you trying to "fix" that you want the bass/treble controls?

Or was it just curiosity of why they weren't there?

Helpful hint when dealing w/ EQ's: They should primarily be used to cut bands, not boost bands. And boosting an EQ band can potentially introduce clipping. For example, if you turn 63hz up by 3db, it will require the amplifier now output 2x the power at 63hz.

I had the factory head unit in and the highs sounded incredible. but lacked midbass in the doors (fully sealed and treated with SDS) I had planned to upgrade the headunit. i have heard alot of good things about the 9886 and 9887 so i went for it. now its installed i have distorted bass in the doors and the tweeters are not as bright. i wanted to turn the overall bass down a little and brighten up my highs like with the old HU. i played with the SAX50.4 and regained some of what i fell in love with about the Bravox speakers but im not fully satisfied. I have played with the factory presets Rap, rock flat...ect. flat seems to sound the cleanest.

[stevemead08 752]

So i really played with the graphic EQ today and it sound so much better. I think it have some more tuning to do but overall im getting more and more pleased with the bravox comps and all the SDS i installed. thanks to everybody.