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two jl10w7’s but what amp and how

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=71607
Printed Date: May 16, 2024 at 6:54 PM


Topic: two jl10w7’s but what amp and how

Posted By: brans_88_stang
Subject: two jl10w7’s but what amp and how
Date Posted: January 27, 2006 at 9:49 AM

I got two jl10w7's but what amp is the best to use and how would you hook it up

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Brantheman



Replies:

Posted By: tcss
Date Posted: January 27, 2006 at 11:40 AM
The 10" W7 has a 3 ohm voice coil so you need to be careful if you plan to parrallel the voice coils. You need an amp that will run at 1.5 ohms. JL recommends an optimum 500 watts RMS with a max of 1000 RMS per woofer. JL's 1000/1 would do very well. Run one if your counting dollars, two if cost is not a concern.

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There is no such thing as free installation!




Posted By: forbidden
Date Posted: January 27, 2006 at 1:09 PM
Any mono sub amp designed and engineered to operate down to a 1 ohm load. There are many amps on the market that will do this.

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Top Secret, I can tell you but then my wife will kill me.




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 1:13 PM
But which is the best one some are junk some are ok But its the RMS total watts i am after some say ther eare like 1200watts but like 100 RMS watts a guy said the jl audio 1000/1 will supply 500 RMS to each sub

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Brantheman




Posted By: forbidden
Date Posted: January 27, 2006 at 1:23 PM
There are a pile of them that are junk. The JL amp as expensive as it is, is a very good amp that will do the job just fine. As would any number of the good big mono amplifiers. This is a case of you needing to research what the amp is really capable of doing, dig deep into the specifications of the amp. Ones to steer clear of, Audiobahn, Boss, Kenwood, Hifonics etc. While some of them may be able to do the job, to compare them to the JL is just not a fair comparison. Find some amps and come back and ask questions if you must.

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Top Secret, I can tell you but then my wife will kill me.




Posted By: forbidden
Date Posted: January 27, 2006 at 1:43 PM

Here is how to wire them.

2 SVC drivers with Voice Coils in Parallel
This is pretty simple, too. Wire both woofer (+) to the amplifier's (+) and do the same with the (-) connections.

3 Ohm Subwoofer: 1.5 Ohms
posted_image

 

 



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Top Secret, I can tell you but then my wife will kill me.




Posted By: holty
Date Posted: January 27, 2006 at 2:28 PM
forbidden wrote:

Here is how to wire them.


2 DVC drivers with Voice Coils in Series / Parallel
Connecting the two voice coils of each driver in series (+ to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:
Dual-1.5 Ohm Subwoofer: 1.5 Ohms
posted_image 

 


that is not correct, the 10W7's are single 3ohm voice coils.



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Holty
'03 Chevy Silverado SS
'04 Nissan Maxima SL




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 2:39 PM
Can someone then draw a diagram on how to hook up the subs right. And  I am goin to use two amps one fo rmy midrange and one for my subs. What size of wire you use comign off the battery.

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Brantheman




Posted By: forbidden
Date Posted: January 27, 2006 at 2:53 PM

See the edit to my post for the proper diagram according to using a single 3 ohm coil.



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Top Secret, I can tell you but then my wife will kill me.




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 3:01 PM

ok what i need to know now is what is the Preamp Output Sec. and the amp input sec. and the Subwoofer out put sec do. And what settings shoud they be on posted_image



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Brantheman




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 3:02 PM
That pic didnt work worth a hoot but i hope you guys understand what i mean anyways

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Brantheman




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 3:06 PM
posted_image

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Brantheman




Posted By: geepherder
Date Posted: January 27, 2006 at 8:04 PM
The preamp outputs will not be used unless you're sending a signal to another amp.  Infrasonic is JL's fancy lingo for subsonic filter, which you will not need if you're using a sealed box.  I recommend starting with the bass boost off.  If after you set it up, you feel you'd like to use it, read your manual and it will explain the different adjustments.  For the low pass, start around 80 Hz and work from there.  Set the slope to 24 dB initially, then switch it to see which you prefer.  Depending on how strong or weak a signal your amp is getting will determine whether you set the input voltage switch to low or high.  Your manual will give the specifics as I don't remember the exact numbers.  Input sensitivity is gain- you can do a search in here on gain setting.  Output polarity will switch the input signal 180 degrees- unless you have phasing problems, this will be left on normal.

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My ex once told me I have a perfect face for radio.




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 9:36 PM

ok i will be using two amps  the jl 1000/ for my subs  and a e6450 for my midrange speakers so how do i connect the two amps together or do i need to I know that i will need to run power wire and a the amp turn on and the ground, but now what about he amp preouts. And another question? hwo do i set my cd player settings to get the best performance out of my system i got a pioneer premiere DEH-p860mp. and i might have 5 Polkaudio mm 6510 with crossovers for sale



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Brantheman




Posted By: geepherder
Date Posted: January 27, 2006 at 10:50 PM
You don't connect the amps together.  You run rca's from the headunit's preouts to the amps.  With your gains down all the way, make your adjustments on the deck until you're satisfied, then set your gains.

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My ex once told me I have a perfect face for radio.




Posted By: brans_88_stang
Date Posted: January 27, 2006 at 11:14 PM

the amp has a preamp output, amplifer input. and a subwoofer output with 4 holes two pos and two neg what plugs into all this three things



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Brantheman




Posted By: brans_88_stang
Date Posted: January 28, 2006 at 3:12 AM
posted_image

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Brantheman




Posted By: geepherder
Date Posted: January 28, 2006 at 8:03 AM

Why do you insist on using the preouts on the amp?  How many sets of preouts does your deck have?  If you have front/rear/sub, then you'll use the front/rear outputs for your interior speakers' amp and the sub outputs for the sub amp.  If your deck only has front/rear preouts, you can use one or the other (preferably fronts) to connect to the sub amp, then you'll set the preamp outputs on the sub amp to full range and use the crossovers built into the next amp.  If your deck has a sub output and you use that, do not use the preouts on the sub amp because you might send only bass to the next amp. 

As far as the speaker outputs go, it doesn't really matter as long as you don't connect too low an impedence (below 1.5 ohms I believe) to the amp.  It's a mono amp, so both the positives are the same, and both the negatives are the same.  You can just run one positive and one negative to each sub.



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My ex once told me I have a perfect face for radio.




Posted By: brans_88_stang
Date Posted: January 28, 2006 at 2:41 PM
ok that makes sense it jsut through me off why the other preouts was there

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Brantheman




Posted By: brans_88_stang
Date Posted: January 30, 2006 at 6:49 PM
If I  choose the 1000/1, i might have to upgrade my vehicle charging system, Would this mean getting a bigger alternator like a 130 amp one


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Brantheman




Posted By: geepherder
Date Posted: January 30, 2006 at 9:31 PM
Get the biggest one for your vehicle that you can afford.  You want one that puts out the most amps at idle (hot rated, not cold rated).  That amp can probably outdraw a 130 amp alternator, and you've got other accessories to keep in mind as well- headlights, heater, etc.

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My ex once told me I have a perfect face for radio.




Posted By: brans_88_stang
Date Posted: January 31, 2006 at 12:13 AM
the 130 amp alternator runs 160 amp peak and 80 amps at idle is that enough

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Brantheman




Posted By: geepherder
Date Posted: February 01, 2006 at 7:55 PM
It depends on how you play your system.  If you keep it at moderate volumes, then yeah, otherwise, probably not.

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My ex once told me I have a perfect face for radio.





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