Going active with the 9887

[krisfnbz 10+ year member]

well I hooked it up, and it turned on....so now I am in the process of wiring the amp....everything done from the head end is complete. except for the processing inside the head unit.

 

[krisfnbz 10+ year member]

nismos....Okay now that I have all of the mids wiring and tweeters wiring to my 4 channel amp, should I turn the x overs in the amp set to "Off" and run all the processing(filtering) through the HU?

BTW I am in my shop right now connecting everything so I will be refreshing this thread every couple mins.

 

[krisfnbz 10+ year member]

Its playing....but now at a lower volume their is slight static?.....

 

[nismos14 5,000+ posts]

Yes turn filters off from the amps, are you sure you have the rca's connected correctly? Did you swap the harnesses? You need to put in that 9887 harness, yes it will work with the other harness, but you should be using the 9887 harness.

 

[Louie68 10+ year member]

Edit: Just checked the back of my unit, The top is labled front, middle rear and bottom sub(I guess like all other HU's) But their is no mention to if front is associated with "Tweeter", but I will take your word for it.
SO I will connect The Tweeter to the front RCA's the Mids to the rear RCA's and the subs to the well sub RCA.

Now I assume their is a certain setting inside of the 9887 to "turn on" this active setup?

Looking at the owners manuel right now and the Fronts are for the mids Rear is for the high range.also underneath the deck there is a switch for 3 way or F/R Sub.Be careful dont want to Ruin your comps.

 

[LaserRed38 10+ year member]

What amp do you have? Didn't see it posted.

 

[Louie68 10+ year member]

What amp do you have? Didn't see it posted.

He has a alpine mrfv 550 listed

 

[99StangGt 10+ year member]

Looking at the owners manuel right now and the Fronts are for the mids Rear is for the high range.also underneath the deck there is a switch for 3 way or F/R Sub.Be careful dont want to Ruin your comps.

Thats wierd I checked out the manual and it does say, highs (Rear), mids (Front). Funny thing is my 9835 is the opposite of that. Why wouldnt they leave it the same.

 

[amedeuce 10+ year member]

for my 9887 i have it connected like this.
front - mids

rear- tweets

sub - sub

This is the correct way. Trust me. disconnect your rcas from the rear of the headunit.

Play a 1khz test tone and with the head unit on 3-way, read the rca outs.

The rear for the tweets will read much lower than the front and subs rca outs.

This is because the rear channels are for the tweeters. If you look into the time alignment section in the manual you will see that this is the way it should be set up.

IF you have your volume set at 28 or 29 I don't remember and you read the rcas on the back of the unit with that test tone I mentioned, the fronts will reat about 2 volts and the rear will read 24mV.

 

[amedeuce 10+ year member]

Thats wierd I checked out the manual and it does say, highs (Rear), mids (Front). Funny thing is my 9835 is the opposite of that. Why wouldnt they leave it the same.

You're right this is the only alpine unit (9887) that I have seen this way. All the others are the way you describe.

My 9833 was this way, but for some reason it has changed for the 9887.

Trust me

Rear - tweeters

front - Mids

sub - sub

 

[nismos14 5,000+ posts]

Yup you guys are right, pretty stupid.

 

[krisfnbz 10+ year member]

Yes turn filters off from the amps, are you sure you have the rca's connected correctly? Did you swap the harnesses? You need to put in that 9887 harness, yes it will work with the other harness, but you should be using the 9887 harness.

Well right now I have the old harness connected, seemed to turn on fine. The Older harness was pretty well taped in their. If I absolutely need to switch it I will do so.

Looking at the owners manuel right now and the Fronts are for the mids Rear is for the high range.also underneath the deck there is a switch for 3 way or F/R Sub.Be careful dont want to Ruin your comps.

Right now I have it connected like the following:

Rears: Tweeters

Front: Mids

Sub-Sub

HOWEVER I failed to switch this "switch" on the physical part of the head unit to make it run 3 way?... Im assuming this could be why I am getting a TINY static, either that or I just would need to reset the gains on my amp(going from 2v to 4v). Its so small you cant even hear it unless volume is at 1-2 and you have your hear at the tweeter.(But this was not here with the 9883.) The X-overs on the amp is off.

However I have no freakin idea other than switching the head unit into active mode how to set the xovers in the head unit. Man this is a confusing head unit. I tried reading the manual, but I only understood like half. TOo many options.

You're right this is the only alpine unit (9887) that I have seen this way. All the others are the way you describe.My 9833 was this way, but for some reason it has changed for the 9887.

Trust me

Rear - tweeters

front - Mids

sub - sub

Got it.

 

[nismos14 5,000+ posts]

Switch the switch asap. To change the crossover settings click A. Sel and select crossover.

 

[Louie68 10+ year member]

However I have no freakin idea other than switching the head unit into active mode how to set the xovers in the head unit. Man this is a confusing head unit. I tried reading the manual, but I only understood like half. TOo many options.

Got it.

Yeah this unit has alot options still getting the hang of it myself.If you hit the A.Sel button onthe bottom of the rotary knob that should get you into the EQ and Crossover settings.

 

[aeon 10+ year member]

you'll get the hang of it pretty quickly once you mess around with it a little.