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Thread: Rear Speaker Specs?

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    lammie200's Avatar
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    Rear Speaker Specs?

    I did a search and didn't think that I found anything definitive. Does anyone know the size of the rear quarter panel speakers? Some people have said 3" but I think the moderator said they are 100mm which is closer to 4". Also, what is the ohm rating? I think the consensus is that they are 2 ohm speakers. Is that true? Help is appreciated.
    2017 Abarth Grigio Cenere SR | OEM 17s | EC V3 & Sprint Panel Filter | E+D Tune P1 | TMC Autoflash | 4C CPs | MPx Exhaust | RRM Turbo Blanket | GFB DV | PCV Catch Can | 5mm/12mm Spacers | Neu-F Rear Bar | DNA Lower & Side Braces | 4 Konis | 4 Springs | MPx MC Bracket | 2" Steering Wheel Spacer

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    Senior Member aelfwyne's Avatar
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    Depends on the trim. If you have base audio, you get matching 6-3/4 speakers to the front doors. That's on Pop or 500 Turbo. If you have Bose, Alpine or Beats, then the rear speakers are 3" amplified speakers in an echo box.
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    Moderator map's Avatar
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    My '18 Pop had the smaller speakers in back, but we opened the cans (echo box?) to install matching front/rear speakers.

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    lammie200's Avatar
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    Non Beats, Abarth trim. I found info from FIAT that the rears are 3.5” in an enclosure but nothing about the ohm rating. I don’t think they are self amplified. They get their power from the amp in the back like all the rest of the speakers from what I can tell. The subwoofer is stated to be 1/2 ohm, but that seems odd.
    Last edited by lammie200; 04-06-2021 at 12:09 AM.
    2017 Abarth Grigio Cenere SR | OEM 17s | EC V3 & Sprint Panel Filter | E+D Tune P1 | TMC Autoflash | 4C CPs | MPx Exhaust | RRM Turbo Blanket | GFB DV | PCV Catch Can | 5mm/12mm Spacers | Neu-F Rear Bar | DNA Lower & Side Braces | 4 Konis | 4 Springs | MPx MC Bracket | 2" Steering Wheel Spacer

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    Senior Member aelfwyne's Avatar
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    Correct. The Abarth has Alpine audio as standard which is considered premium. I only said amplified because the speakers are selected to work best with the amp which the speakers used on base audio in the rear aren't. I believe they are full range and the front door are actually considered woofers.
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    lammie200's Avatar
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    Quote Originally Posted by aelfwyne View Post
    Correct. The Abarth has Alpine audio as standard which is considered premium. I only said amplified because the speakers are selected to work best with the amp which the speakers used on base audio in the rear aren't. I believe they are full range and the front door are actually considered woofers.
    Yeah, they are full range with the woofers in the doors. Still not sure of the ohm rating though. I got 4 ohms from looking at speakers for the non premium audio in Pops. I can’t see any markings for ohms on any of the Alpine speakers. Crutchfield lists 4 ohms for a lot of their options and also list 3.5 ohms and 2 ohms. Also the Alpine looks like it’s rated for 280 watts. Do I need a speaker rated for 140 watts peak? Maybe 100 watts rms?

    I want to get into my rear quarter panels to clean out the glass chips when someone broke my right quarter panel window. While I have the cards of I am thinking about changing the speakers.

    Ok, so now I see the Alpine would need 2 ohm speakers rated for about 50 watts each. I am going to continue to look for more info.
    Last edited by lammie200; 04-06-2021 at 12:20 AM.
    2017 Abarth Grigio Cenere SR | OEM 17s | EC V3 & Sprint Panel Filter | E+D Tune P1 | TMC Autoflash | 4C CPs | MPx Exhaust | RRM Turbo Blanket | GFB DV | PCV Catch Can | 5mm/12mm Spacers | Neu-F Rear Bar | DNA Lower & Side Braces | 4 Konis | 4 Springs | MPx MC Bracket | 2" Steering Wheel Spacer

    2013 Sport Argento SR - SOLD - | Many Mods

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    Moderator map's Avatar
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    Alpine S-S65 fit nicely, using the old box as a mounting point. Those are 4 ohm 6.5" speakers. I don't think we clipped the resistor. Yeah, I think the factory W rating is overstated. My replacement amp is 55W (at 4 ohms) or 80... and much louder & clearer sound.

    1.jpg

    Last edited by map; 04-06-2021 at 03:17 AM.

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    lammie200's Avatar
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    Yeah, but I am not changing amps so I need something closer to 2 ohms. Apparently a lot car manufactures use 2 ohm systems for voltage/wiring/weight reasons. I can get a couple of $50 JBLs that should drop into place that are listed as 2.3 ohms and meant as OEM replacements for various applications.
    2017 Abarth Grigio Cenere SR | OEM 17s | EC V3 & Sprint Panel Filter | E+D Tune P1 | TMC Autoflash | 4C CPs | MPx Exhaust | RRM Turbo Blanket | GFB DV | PCV Catch Can | 5mm/12mm Spacers | Neu-F Rear Bar | DNA Lower & Side Braces | 4 Konis | 4 Springs | MPx MC Bracket | 2" Steering Wheel Spacer

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    Senior Member fast_dave's Avatar
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    Quote Originally Posted by lammie200 View Post
    Yeah, but I am not changing amps so I need something closer to 2 ohms. Apparently a lot car manufactures use 2 ohm systems for voltage/wiring/weight reasons. I can get a couple of $50 JBLs that should drop into place that are listed as 2.3 ohms and meant as OEM replacements for various applications.
    Hey lammie200,

    Check out this well detailed article, written by an former car audio installer with an electrical engineering degree, at the attached link.

    LINK: https://soundcertified.com/what-is-c...ker-impedance/

    If you have a basic digital multi-meter, you can test your speakers yourself.

    The author has a table about 3/4 of the way down the article, of the typically observed range of measurements and how they correspond to the ohm rating.

    HTH -
    Last edited by fast_dave; 04-06-2021 at 06:06 PM.
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    lammie200's Avatar
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    Thanks. I have a multimeter but I want to buy the correct speakers and have them in hand so I only have to take apart all the panels and put them back in once. Pretty sure they are 2 ohm speakers.
    2017 Abarth Grigio Cenere SR | OEM 17s | EC V3 & Sprint Panel Filter | E+D Tune P1 | TMC Autoflash | 4C CPs | MPx Exhaust | RRM Turbo Blanket | GFB DV | PCV Catch Can | 5mm/12mm Spacers | Neu-F Rear Bar | DNA Lower & Side Braces | 4 Konis | 4 Springs | MPx MC Bracket | 2" Steering Wheel Spacer

    2013 Sport Argento SR - SOLD - | Many Mods

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