Subwoofer recommendation

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Redstorm3

Member - Posts: 38

Joined: May 07, 2004

Location: United States

Posted: June 02, 2005 at 11:02 AM / IP Logged

can anybody recommend a sub upgrade, i am currently running a kenwood KAC-7201 amp with 2 12" kenwood subs in a sealed box. The box has 1.25 cu. ft of air space per woofer. Can i just get any subs that is rated @ the 1.25?

tcss

Silver - Posts: 1,623

Joined: June 07, 2004

Location: United States

Posted: June 02, 2005 at 2:44 PM / IP Logged

Perfect box size for JL W3V2 12".

Redstorm3

Member - Posts: 38

Joined: May 07, 2004

Location: United States

Posted: June 02, 2005 at 2:55 PM / IP Logged

thanks for the recommendation, are they good subs? or do you think i should go with a better amp and keep the subs i already have. I saw the power acoustic LT1440/2 which has a RMS of 300w x2 @ 4ohms. My subs are hooked in series @ 4ohms (i have 2 12" kenwood KFC-W3009)

tcss

Silver - Posts: 1,623

Joined: June 07, 2004

Location: United States

Posted: June 02, 2005 at 3:13 PM / IP Logged

300 RMS per sub is perfect although I'm not familier with power acoustic These subs are dual voice coil so you can do a parrallel/ series setup to get a 4 ohm load with their dual 4 ohm coil model. I think these are the best value in JLs line.

sedate

Silver - Posts: 1,173

Joined: July 03, 2004

Location: Colorado, United States

Posted: June 03, 2005 at 1:06 AM / IP Logged

Wha?

No don't ever install a "power acoustik" amp. That is a goofy, goofy thing to do.

Redstorm, manufacturers do not 'rate' boxes on anything that has anything to do with sound-quality or a quality listening experience. They list 'manufacturers specifications' based on a loose-mix of "What box-size will sell lotsa subs?(Read: a 1cuft3 box is really easy to build...)" and "what will be loud(read: real peaky at 50hz) and make ppl think they bought a good sub?".... certainly absolutely nothing like sound-quality goes into what a manufacturer recommends for a enclosure.

What kinda amp do you have? Get back to us with that and we'll throw ya some recommendations.

And tcss is right, if you have a clean 300 watts or so, a W3 ought be at the top of ur list.

"I'm finished!" - Daniel Plainview

Redstorm3

Member - Posts: 38

Joined: May 07, 2004

Location: United States

Posted: June 03, 2005 at 7:53 AM / IP Logged

This is exactly what i have installed:

Kenwood KAC-7201 amp:

800 watt peak

150 watts RMS x 2 at 4 ohm

230 watts x 2 at 2 ohms

460 watts RMS x 1 bridged output at 4 ohms

variable low-pass crossover (50-200 Hz at 18 dB per octave)

selectable high-pass crossover (150 Hz at 12 dB per octave)

selectable bass boost (12 dB at 90 Hz)

That is powering 2 12" Kenwood KFC-W3009 4ohm subs in a sealed Q-logic QLH-12D125 box. I got this whole set from Bestbuy b/c my old system was stolen and I need a quick fix which this was b/c it was only like $250. I know it isn't show stuff but it was the best option at the time. I want to upgrade little by little but I am really not too knowledgable in this area. I appreciate the help

Blowntweeters

Silver - Posts: 650

Joined: June 03, 2005

Location: Nevada, United States

Posted: June 03, 2005 at 1:06 PM / IP Logged

what r u looking for in a sub SQ or SPL and if u are looking for SPL you shuold go with 15" subs with the amp you have you could run 2 entry level 15" subs from rockford fosgate sony or JL WOs then when you ready to up grade you amp u could go with just about anything think JL rockford alpine or memphis would be good choices memphis now that i think of it has entry level 15" subs that retal 4 about $100 bucks each

1974 ford pinto 4 15" punch Z power punch bd 1001 pioneer DEH-6700

Redstorm3

Member - Posts: 38

Joined: May 07, 2004

Location: United States

Posted: June 03, 2005 at 1:32 PM / IP Logged

I'm looking for a combination of both SQ & SPL. What do you guys recommend, I would like to stick with the 12" for now since I already have a box for them. Should I first go with better subs then amp or vice-a-versa?

Blowntweeters

Silver - Posts: 650

Joined: June 03, 2005

Location: Nevada, United States

Posted: June 03, 2005 at 1:43 PM / IP Logged

i would go with amp first and as far as the suds you dont get much SQ from 15" subs but there great for SPL how much are oyou tryiong to spend on an amp and r u gonna buy on line or retail ?

1974 ford pinto 4 15" punch Z power punch bd 1001 pioneer DEH-6700

sedate

Silver - Posts: 1,173

Joined: July 03, 2004

Location: Colorado, United States

Posted: June 03, 2005 at 1:46 PM / IP Logged

Yea those subs look really cheesy. Keep ur box it'll do fine.

460 Kenwood watts huh? You'll want two DVC 4-ohm subs.. each VC wired in series and then in parallel to each other and then bridged off the amp.

You might want something a wee-bit more efficient then a W3... those are little hungry.. but very nice subs. Have you looked at JL's new W1 woofers? Either choice would be excellent.

Of course, if I were you, I'd buy a pair of Infinity Perfect 12.1d's... they'd sound excellent in that box and are some of the most efficient SQ subs I've ever heard off. This is where I'd put my $$$:

http://www.cardomain.com/item/INFPERFECT121D

"I'm finished!" - Daniel Plainview

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