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  #1  
Old 02-04-2010, 06:09 PM
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Making a trade tomorrow.

Since i dont have extra $ to buy a new sub woofer i am making a trade. I want a 10" so i am trading my Kicker CVR 12 to my friend for a mint JL 10W7 tomorrow on my lunch break.

For now i will run it with my ZX750i mono Kicker amp. I need to look up max rms and watts to make sure it will be ok first but i think it will be ok. At least until i can sell the Kicker Amp and buy a better amp for the Sub Woofer.


Once i get the new sub woofer i am going to start making my new box that will be as small as possible and fight tight up against the back seat LH corner (if looking in the cargo area).
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Old 02-04-2010, 06:18 PM
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Re: Making a trade tomorrow.

a CVR 12 for a 10 W7???

Wow..
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Old 02-04-2010, 06:40 PM
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Re: Making a trade tomorrow.

Wow? Good or bad?
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Old 02-04-2010, 06:41 PM
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Re: Making a trade tomorrow.

Sub Specs. JL10W7 http://mobile.jlaudio.com/products_subs.php?series_id=5

Free Air Resonance (Fs): 30.6 Hz Electrical “Q” (Qes): 0.578 Mechanical “Q” (Qms): 7.647 Total Speaker “Q” (Qts): 0.537 Equivalent Compliance (Vas): 1.28 cu. ft. / 36.1 liters One-Way, Linear Excursion (Xmax)*: 0.9 in. / 23 mm Reference Efficiency (no): 0.171% Efficiency (1W/1m)**: 84.3 dB SPL Effective Piston Area (Sd): 59.8 sq. in. / 0.0386 sq. m. DC Resistance (Re): 2.75 ohm Nominal Impedance (Znom): 3 ohm Thermal Power Handling (Pt): 750W Driver Displacement: 0.09 cu. ft. / 2.5 liters Net Weight: 30 lbs. / 13.6 kg

According to this chart the 10w7 will work with the 750w amp but it will be pushing it. Hopefully i can sell the amp and get a 300-500 watt amp to run the sub.
http://mobile.jlaudio.com/products_s...php?page_id=35


The next step will be building a box. That is where i am going to need help because i know nothing about JL Subwoofers.
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Old 02-04-2010, 07:04 PM
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Re: Making a trade tomorrow.

u can just keep the amp u have u dont hafta turn it up all the way they are a real power hungry sub
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Old 02-04-2010, 07:13 PM
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Re: Making a trade tomorrow.

Quote:
Originally Posted by alsu3 View Post
u can just keep the amp u have u dont hafta turn it up all the way they are a real power hungry sub

I will keep the amp turned down but according to that chart once you go over 500w you are in the "danger zone" and i really dont want to blow a good sub. I will use it for now but i would like an amp better suited to the sub.
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Old 02-04-2010, 07:24 PM
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Re: Making a trade tomorrow.

Power handling cannot be determined until the enclosure is built.

Keep the amp you have. The W7 isn't a terribly efficient driver, so power on tap is good.
Remember, it's a 3-ohm configuration, so it ill not be running at 2ohm/750w. It will be more in that 500w range.

BTW, smack your friend in the head after he trades you! He's getting hose in this trade, lol.
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Old 02-05-2010, 04:04 AM
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Re: Making a trade tomorrow.

yeah the w7's are NICE!!! do the trade kyle
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Old 02-05-2010, 09:48 AM
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Re: Making a trade tomorrow.

I Wish i had the money to buy a W7 those subs are Amazing
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Old 02-05-2010, 06:24 PM
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Re: Making a trade tomorrow.

Well, today was a bust. I forgot to call my friend at lunch and he forgot to call me. I spoke to him later in the day and hes taking of for the weekend so i wont be able to get the Sub until Tuesday.


Matt, Can you help me out with figuring out the dimensions of the enclosure. I know its supposed to be between 1.75 and 2.0 Cuft but i guess these subs perform best with a rectangular port and i have no idea how to figure out how big to make it. I spoke to a local shop and they said its a bitch to figure out.


Also how do i set up my amp and wire up the sub to make it a 3ohm 500w?
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Old 02-06-2010, 10:12 AM
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Re: Making a trade tomorrow.

Quote:
Originally Posted by NHWK05 View Post
Matt, Can you help me out with figuring out the dimensions of the enclosure. I know its supposed to be between 1.75 and 2.0 Cuft but i guess these subs perform best with a rectangular port and i have no idea how to figure out how big to make it. I spoke to a local shop and they said its a bitch to figure out.
Umm, never go to this shop again. An 8-year-old who can use the internet could design an enclosure for you.

I'll model it up (maybe not today 'cause I have a wedding in a little bit) and get you some different plots (sealed, vented (different tuning frequencies).

Also, port shape has zero to do with anything. Port area/volume/ do. But a rectangle port will be easiest to construct... but they don't look as aesthetically pleasing as a round port does.

Quote:
Originally Posted by NHWK05 View Post
Also how do i set up my amp and wire up the sub to make it a 3ohm 500w?
You just wire the sub to the amp (same way you did your Kicker). Set your gain by ear.
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Old 02-06-2010, 10:31 AM
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Re: Making a trade tomorrow.

Thanks matt. I need the enclosure to be as space efficient as possible. I use the back of my jeep alot so as stealthy as possible. i have no ideas about dimensions for this sub but IIRC its a deep sub so that may pose a problem. Id like to have the sub up against the drivers side back of the seat in the corner.
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