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Head Unit on the ground....Sparks everywhere.... Alpine KTP445u

Discussion in '3rd Gen. Tacomas (2016+)' started by Pippin65, Jul 2, 2018.

?

It's raining where I am...

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  1. Jul 2, 2018 at 10:16 AM
    #1
    Pippin65

    Pippin65 [OP] Active Member

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    Ha.
    Actually the head unit is on a table....

    Need quick best practice for install of Alpine Ktp445U . Have off today only. I am sure some many other of our 3rd Gen. Brethren would be interested in this inexpensive and easy (if you have a best practice) upgrade. So please, if you are savvy help.


    Questions:

    Best way to power, and best alternate.....

    Best to battery or inside cabin fuse? and which?


    If to battery which route is easiest?


    Remote switch and you....Explain..

    Front HPF dipswitch settings, with my particular setup ( the options are off 60hz, 80hz, 120hz)


    Rear HPF : Off, 60hz, 80hz, 120 hz

    Cut off amp input RCA Jacks and splice in front and rear speakers...?(have no other harness')

    mount point of this lil amp? center console/...seems cool... behind amp? see good grounding points...

    behind the glove box? can more readily access gain...

    what gain does and how to set it...

    be quiet!-- any noise considerations? in terms of connections, etc..


    Thanks!


    Ingredients:

    I have the Subaru tweeters in the dash $100-ish

    Kicker 44KSC69304
    6"x9" 3-way car speakers . $150

    Kicker 43CSC674
    6-3/4" 2-way car speakers in the access cab door $56

    Alpine KTP-445U Power Pack

    Compact upgrade for any car radio — 45 watts RMS X 4 . $150





     
    Last edited: Jul 2, 2018
  2. Jul 2, 2018 at 10:31 AM
    #2
    Spillproof

    Spillproof Well-Known Member

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  3. Jul 2, 2018 at 10:42 AM
    #3
    Pippin65

    Pippin65 [OP] Active Member

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  4. Jul 2, 2018 at 10:46 AM
    #4
    Pippin65

    Pippin65 [OP] Active Member

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    Better? Lmao

    Also any insights on installing this:
    image.jpg
     
  5. Jul 2, 2018 at 10:49 AM
    #5
    Comb

    Comb Known Member

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    OVTune Verified Purchase
    Pippin65 [OP] likes this.
  6. Jul 2, 2018 at 10:54 AM
    #6
    DLRIII

    DLRIII Well-Known Member

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    Subscribed. I want to install this same amp, but may have bestbuy do it haha
     
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  7. Jul 2, 2018 at 11:07 AM
    #7
    Pippin65

    Pippin65 [OP] Active Member

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    No way! I’ll help you once I’ve done it. That is what we do at Tacoma World.
    upload_2018-7-2_14-7-23.jpgLmfao
     
  8. Jul 2, 2018 at 5:27 PM
    #8
    Pippin65

    Pippin65 [OP] Active Member

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    Holy crap. So nice. +1million thumbs up
     
  9. Jul 2, 2018 at 5:54 PM
    #9
    badhabit2break

    badhabit2break Well-Known Member

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    For the amp, I would run power from the battery. I believe there is a grommet on the firewall on the passenger side.

    FHP I would set to 80hz, RHP I would set to 120. You can always change the front if you need to.

    Are you running a sub?

    The gain is NOT a volume knob. You want to match the output of the radio. There are a couple ways to do this. I prefer the SMD DD1.

    Make sure to have a good ground, then there should not be any noise.

    Good luck.
     
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  10. Jul 2, 2018 at 6:00 PM
    #10
    DLRIII

    DLRIII Well-Known Member

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    Did you get it installed?
     
  11. Jul 2, 2018 at 7:10 PM
    #11
    gorram

    gorram Well-Known Member

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    Gain adjustment is where you match the output level from the source device. It's best set with an oscilloscope or even a voltmeter. However you can get get it fairly close by setting the source device to about 75% of max volume and start with the gain on the amp all the way counterclockwise. Slowly increase the gain to the point where you start to get distortion in the speakers. Back the gain a little to remove the distortion. Try a variety of songs or other genres you listen to come up with a good place to set it.

    This is not nearly as accurate as setting with an oscilloscope or even a DMM and a test tone.
     
  12. Jul 3, 2018 at 4:31 AM
    #12
    Pippin65

    Pippin65 [OP] Active Member

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    She’s running. But the back speakers are not correct.
    So until I fix them I set it to a two speaker output. And the system sounds amazing.

    Did not connect the remote wire so I hope I don’t come out to a dead battery.
     
  13. Jul 4, 2018 at 1:12 PM
    #13
    Pippin65

    Pippin65 [OP] Active Member

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    Whoaaaaaaaaa!!!
    All 6 speakers going. Wow. Do this. My install is not yet neat. But it is complete. And it sounds so bitchin.

    Wanting to use an actual music cd for tweaking, I used a special cd. 89759ED4-786B-46C5-A2C4-D403DB5E2551.jpg
     
  14. Jul 4, 2018 at 1:15 PM
    #14
    Pippin65

    Pippin65 [OP] Active Member

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    A9DFEBD2-CA58-417A-B127-7CC714A2CE3D.jpg Any help with these settings. I cut off the rca’s and chose speaker level. Not sure about these hpf settings in my particular system. Any people care to comment that are in the know.
    My specs are above.
     
  15. Jul 6, 2018 at 8:59 PM
    #15
    Pippin65

    Pippin65 [OP] Active Member

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    I’d like to report back that I have the
    This is awesome, thanks. To enhance my retention, what do these FHP/RHP settings impact on the ear?/speakers?

    Thanks Again.
     
  16. Jul 7, 2018 at 6:23 AM
    #16
    badhabit2break

    badhabit2break Well-Known Member

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    Front High Pass / Rear High Pass are the crossover settings. It will remove the lower frequencies (bass) from them. Most amps have more adjustable crossovers than just two frequencies. If the 80hz is too much bass int he front and causing distortion, use the 120hz setting.
     
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  17. Mar 18, 2019 at 2:17 PM
    #17
    theorangey

    theorangey New Member

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    I’m actually looking to do this exact setup now. Are you still happy with it? Was there a harness to buy or was everything spliced?
     

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