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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Jun 20, 2012 3:48 pm Post subject: Lets talk car audio for a bit :) |
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I picked up my friends JBL GTO1201.1 1100W RMS monoblock amp from him recently, since I figured it would be a good match for 4 12" JL Audio W6 woofers.
My main concern is can the alternator or battery in my car handle it. Its a 1977 Eldorado biarritz and has a new alternator (identical specs to original one, or as close as you can get for new), and I have a large battery, I think its 1100 cold cranking amps.
I don't want to stress the alternator or battery out so I wanted to know what I should do to make it easier on the car electronic system itself.
Any Advice welcome 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Wed Jun 20, 2012 4:02 pm Post subject: |
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The cars battery is the critical factor. An alternator can barely supply enough current to run the factory accessories and that's above idle at that. So big battery or dual batteries would be the key.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Wed Jun 20, 2012 4:31 pm Post subject: |
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| macgyver655 wrote: | | The cars battery is the critical factor. An alternator can barely supply enough current to run the factory accessories and that's above idle at that. So big battery or dual batteries would be the key. |
My thoughts exactly Mac, I was thinking a 2nd battery would be better. I don't suppose upgrading the alternator a bit itself would be beneficial? I can get a bigger one for it.
Also I don't know if its necessary, but what about a capacitor or 2?
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Xeus
Joined: 07 Mar 2006
Posts: 111
Location: N.E. Wisconsin
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| Posted: Thu Jun 21, 2012 2:23 pm Post subject: |
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| Quote: | | My main concern is can the alternator or battery in my car handle it. |
Wow, can your ears handle it?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jun 21, 2012 2:25 pm Post subject: |
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| Xeus wrote: | | Quote: | | My main concern is can the alternator or battery in my car handle it. |
Wow, can your ears handle it? |
oooooh at least for a few more years I'm sure they'll handle it. They can handle my AVR 5805 so thats a good start 
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jun 21, 2012 2:54 pm Post subject: |
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| Jeremy112 wrote: | | macgyver655 wrote: | | The cars battery is the critical factor. An alternator can barely supply enough current to run the factory accessories and that's above idle at that. So big battery or dual batteries would be the key. |
My thoughts exactly Mac, I was thinking a 2nd battery would be better. I don't suppose upgrading the alternator a bit itself would be beneficial? I can get a bigger one for it.
Also I don't know if its necessary, but what about a capacitor or 2? |
I didn't answer these questions because they can be subjective..... 
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jun 21, 2012 3:00 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | | macgyver655 wrote: | | The cars battery is the critical factor. An alternator can barely supply enough current to run the factory accessories and that's above idle at that. So big battery or dual batteries would be the key. |
My thoughts exactly Mac, I was thinking a 2nd battery would be better. I don't suppose upgrading the alternator a bit itself would be beneficial? I can get a bigger one for it.
Also I don't know if its necessary, but what about a capacitor or 2? |
I didn't answer these questions because they can be subjective..... |
Well in your opinion mac, what would be the way you would do it?
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jun 21, 2012 3:30 pm Post subject: |
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Well as far as the alternator it would 1st depend on what the amp rating of your current alt is and what amp options are available as a replacement.
As far as the caps it would depend if your listening to a lot of consistent, heavy, window rattling bass and also the caps that are currently in the amp.
See, very subjective.
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jun 21, 2012 3:39 pm Post subject: |
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| macgyver655 wrote: | Well as far as the alternator it would 1st depend on what the amp rating of your current alt is and what amp options are available as a replacement.
As far as the caps it would depend if your listening to a lot of consistent, heavy, window rattling bass and also the caps that are currently in the amp.
See, very subjective. |
Lol, subjective indeed.
I know the alternator in my car is about 70 amps I beleive (Im not sure, Its been a while) I think I saw a nice chromed out 150 amp alternator on ebay for my car, it was definitely larger than what I have and it went for my car.
Honestly the music will vary, but for the most part im a Techno person when it comes to music. Though I listen to pretty much all genres except for country
The amp requires a 100 amp main fuse in the + line going from battery to amp, my friend who previously owned it figured he needed more power as well, since while driving at night on the highway or anywhere, you could watch the headlights go with the music very very easily on the road
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Thu Jun 21, 2012 4:08 pm Post subject: |
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What gauge wire did he have running to the amp from the battery?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jun 21, 2012 4:45 pm Post subject: |
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| macgyver655 wrote: | | What gauge wire did he have running to the amp from the battery? |
We used 4 guage wire for both the positive and ground connections, and 10 guage going from the amp to subwoofer
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jeffslife
Joined: 17 Apr 2010
Posts: 4190
Location: ohio usa
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| Posted: Thu Jun 21, 2012 6:23 pm Post subject: |
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I had a 300 amp alt custom made in KY for about 320.00 but that was about 8 or 9 years ago. BUT I started with an ambulace alt that was already 150 amps .
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Thu Jun 21, 2012 11:03 pm Post subject: |
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| jeffslife wrote: | | I had a 300 amp alt custom made in KY for about 320.00 but that was about 8 or 9 years ago. BUT I started with an ambulace alt that was already 150 amps . |
Hmm, interesting, I don't think I need a 320 amp one but a larger 150 (I think the one for mine was 170 or 200) would probably be sufficient
Thanks for your input Jeff 
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Jeremy112
Joined: 28 Sep 2006
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Location: Fond du Lac, WI
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Fri Jun 22, 2012 2:31 pm Post subject: |
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Way ta put some bling on that 1984 Hyundai Pony!
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Jun 22, 2012 2:33 pm Post subject: |
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| Curt Palme wrote: | | Way ta put some bling on that 1984 Hyundai Pony! |
lm F ao Curt well apparently its polished stainless or aluminum, not chrome, so better IMO and still has the bling
And though I know your joking, you can hardly classify a 1977 eldoradio biarritz as a 84 hyundai
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
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| Posted: Fri Jun 22, 2012 2:40 pm Post subject: |
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Funny, my hydraulic jack broke this past weekend after 10 years of good service, so I went out to get another one. The best price I could find on sale was for a jack and stand combo for $69... and the damn things are all chromed. Will I feel stupid working on my cars this weekend until I get some grease on it!
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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Fri Jun 22, 2012 2:43 pm Post subject: |
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| Jeremy112 wrote: | | Curt Palme wrote: | | Way ta put some bling on that 1984 Hyundai Pony! |
lm F ao Curt well apparently its polished stainless or aluminum, not chrome, so better IMO and still has the bling
And though I know your joking, you can hardly classify a 1977 eldoradio biarritz as a 84 hyundai |
'77 Eldorado...... that doesn't have that 4,6, 8 or 4100 all aluminum motor, does it?
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Jeremy112
Joined: 28 Sep 2006
Posts: 2649
Location: Fond du Lac, WI
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| Posted: Fri Jun 22, 2012 2:48 pm Post subject: |
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| macgyver655 wrote: | | Jeremy112 wrote: | | Curt Palme wrote: | | Way ta put some bling on that 1984 Hyundai Pony! |
lm F ao Curt well apparently its polished stainless or aluminum, not chrome, so better IMO and still has the bling
And though I know your joking, you can hardly classify a 1977 eldoradio biarritz as a 84 hyundai |
'77 Eldorado...... that doesn't have that 4,6, 8 or 4100 all aluminum motor, does it? |
It has a 425 Cast Iron Carbeurated V8 and she has an original 69,000 miles on it, I've put about 4000 miles on it in 3 years. (I don't go anywhere as I have nowhere to go )
It is HEAVY METAL xD 
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Jeremy112
Joined: 28 Sep 2006
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Location: Fond du Lac, WI
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| Posted: Fri Jun 22, 2012 2:49 pm Post subject: |
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Its some sort of iron Not sure entirely which,
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