Couple of Stereo questions - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ General Discussion Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 03-22-2014, 02:37 PM   #1
Jeeper
 
Saywhen's Avatar
 
Join Date: Mar 2014
Posts: 16
Couple of Stereo questions

I've got a couple of random stereo questions. I'm upgrading my 97 TJ stereo. PO had installed an aftermarket HU already. It's a JVC KD-G320 which from what I've researched seems like it should do the job. I ordered Polk db521's, db651's, and a MRP-F300 amp. I did not however order any type of Sub. My question is should I? I do like my music to be of quality. Even tho I'm mid 50's, I still like a little Boston, or 38 Special cranked up every now an then. I see where I can get a sub for somewhere in the neighborhood of around $60-$70 bucks. I'm not sure how I'd wire that amp to run 4 speakers and the sub, and if that was the case would the system still be of adequate quality for running down the highway with the top off? Question #2: has anybody just bought the sub speaker and built a box that would bolt to the floor right behind the console. I know I'd loose the ability to tumble the back seat forward, but the alternative is to just take it out on occasion. I know there's some concern of the exposed goods to the low life's that think they have a right to someone else's stuff, but if it was covered with a light weight carpet to look like it "belonged" there maybe it wouldn't be as noticeable. Has anybody done this? Pro's and Con's on the idea would be great. By the way, my console wasn't equipped with a sub originally. 10" or 12" sub? I need some idea's and guidance please. I'd really like to do this only once. I am painting my sound bar and roll bar pads while I have it apart, guess that's a plus anyway. And as always, thanks in advance.

Saywhen is offline   Quote Quick Reply
Old 03-22-2014, 03:28 PM   #2
Jeeper
 
seeraedave's Avatar
 
Join Date: Jan 2014
Location: Phoenix, AZ
Posts: 69
Don't know for sure that it would work, but a TJ is a TJ. Find a console that should have a sub, Quadratec has a nice OEM type upgraded factory sized sub that IMO provides an acceptable amount of base. Then you can still tumble your back seat. I just installed some Infinity Reference speakers and the above mentioned sub and drive them with the factory head unit, not particularly high performance, but acceptable. I am thinking about an after market head unit though because I'd like to stream from my iphone instead of being limited to 1 CD in the deck and a few in the console.

seeraedave is offline   Quote Quick Reply
Old 03-22-2014, 03:47 PM   #3
Jeeper
 
Saywhen's Avatar
 
Join Date: Mar 2014
Posts: 16
I really didn't know either. I thought about just mounting the sub in my console and cutting the appropriate "slits" in the side or back of it, but didn't want to ruin my console if it didn't work out. One question I forgot to ask is this: should I run all new new speaker wire or use the factory? Seems to me like I should run new with the amp and all, but I know next to nothing about stereo wiring and such. I can get it done, but I want to do it right. thx
Saywhen is offline   Quote Quick Reply
Old 03-22-2014, 05:09 PM   #4
Jeeper
 
seeraedave's Avatar
 
Join Date: Jan 2014
Location: Phoenix, AZ
Posts: 69
When I recently replaced my console mounted sub I was slightly kinda sorta impressed with the factory sub unit/assembly. It is not high performance by any means, but it is an enclosure designed to allow the sub to do what subs do. They need a sealed box of a specific size to give the "thump". For a 6" sub, the Quadratec unit in the factory console works well. I doubt that you would get acceptable performance by just throwing a 6" sub in a standard console, you need the enclosure. As far as wire, if you're staying lower performance, factory sized wire should be just fine. Sine wave current tends to travel on the surface of the wire, which is why we use stranded wire for audio in the first place, more little wires and more surface area. Higher amounts of current (high performance audio systems) require larger gauge wire to handle the skin effect "flow". Even with a 20ish watt per channel after market head unit with no after market amp, and the speakers that I mentioned above, I personally would just use the factory wiring. Adequate for my needs, and I do like my Nine Inch Nails cranked up.
seeraedave is offline   Quote Quick Reply
Old 03-22-2014, 06:10 PM   #5
Jeeper
 
Tiburon's Avatar
 
Join Date: Sep 2006
Location: Manchester, CT
Posts: 432
Send a message via MSN to Tiburon
What you already have will sound nice. Unfortunately you won't be able to run A sub using that amp unless you dedicated the Front channel to only one set of speakers and let the radio run another set. You'll need another small 2 channel to bridge to the sub.
About the sub now. Because of the acoustics of a sub you'll get better (much much better sound) from it being in an enclosure. You also need an amp to power the sub. Based on what I was reading of what you are looking for sound. A loaded enclosure with a built in amp would work. ( let the haters hatin on that idea begin!) Its small, mountable, comes already with an amp, and its in its own enclosure. As an added bonus depending on what you pick, it may even just have an easy way to unplug it if you need the space for something. A Bazooka tube, a Basslink, something like that. Good luck
__________________
06 Yellow SE, Stock for now.
Tiburon is offline   Quote Quick Reply
Old 03-22-2014, 06:35 PM   #6
Jeeper
 
Join Date: Jan 2010
Location: Houston, Tx
Posts: 632
For Boston that system would be fine, but if you want to play some "Cat Scratch Fever" or "Freebird" (best song ever written. fact.) you're gonna need a good sub. 2 ten or twelve inch subs would be great if you can fit them, but you loose any chance of behind the rear seat storage with them. With the top and doors off you really need some volume!
Shoe is offline   Quote Quick Reply
Old 03-22-2014, 06:37 PM   #7
Jeeper
 
Tiburon's Avatar
 
Join Date: Sep 2006
Location: Manchester, CT
Posts: 432
Send a message via MSN to Tiburon
Quote:
Originally Posted by Saywhen View Post
I really didn't know either. I thought about just mounting the sub in my console and cutting the appropriate "slits" in the side or back of it, but didn't want to ruin my console if it didn't work out. One question I forgot to ask is this: should I run all new new speaker wire or use the factory? Seems to me like I should run new with the amp and all, but I know next to nothing about stereo wiring and such. I can get it done, but I want to do it right. thx
For the level of power you are talking about, stock wires for the speakers are fine. You will need to run wire from the outputs on the amp to either the speakers directly or to where they hook up behind the radio.
__________________
06 Yellow SE, Stock for now.
Tiburon is offline   Quote Quick Reply
Old 03-22-2014, 08:00 PM   #8
Jeeper
 
Majnoon's Avatar
 
Join Date: Apr 2013
Location: Springfield Missouri
Posts: 2,973
Majnoon is offline   Quote Quick Reply
Old 03-22-2014, 09:14 PM   #9
Jeeper
 
Saywhen's Avatar
 
Join Date: Mar 2014
Posts: 16
I just figured I'd run new speaker wire for no more than it costs, that way I'd know for sure what I had. Guess I'll see what the usually very vague instructions tell me with the amp and speakers. I'm thinking the powered sub will be my best option most likely. just securing it will be the challenge. Thanks for the input. And yes, top and doors came off today. As it turns out prolly a week early......Road noise is a killer and that is what is going to defeat all the time and money spent building a semi nice system. I'm just hoping it's a vast improvement over what I've got now that I'll be satisfied and not really know what I'm missing without the sub. An yes, thumbs up on a little LS.
Saywhen is offline   Quote Quick Reply
Old 03-23-2014, 12:25 AM   #10
Jeeper
 
Tiburon's Avatar
 
Join Date: Sep 2006
Location: Manchester, CT
Posts: 432
Send a message via MSN to Tiburon
Quote:
Originally Posted by Saywhen View Post
I just figured I'd run new speaker wire for no more than it costs, that way I'd know for sure what I had. Guess I'll see what the usually very vague instructions tell me with the amp and speakers. I'm thinking the powered sub will be my best option most likely. just securing it will be the challenge. Thanks for the input. And yes, top and doors came off today. As it turns out prolly a week early......Road noise is a killer and that is what is going to defeat all the time and money spent building a semi nice system. I'm just hoping it's a vast improvement over what I've got now that I'll be satisfied and not really know what I'm missing without the sub. An yes, thumbs up on a little LS.
Anything beyond 40mph and you might as well get some nice noise canceling headphones. Or prepare to shell out a lot more money. But when you have the top down you're generally not going to want to go on the highway for extended trips. Its trade I've happily made since I bought mine back in 06
__________________
06 Yellow SE, Stock for now.
Tiburon is offline   Quote Quick Reply
Old 03-23-2014, 09:05 AM   #11
Jeeper
 
seeraedave's Avatar
 
Join Date: Jan 2014
Location: Phoenix, AZ
Posts: 69
Quote:
Originally Posted by Tiburon View Post
Anything beyond 40mph and you might as well get some nice noise canceling headphones. Or prepare to shell out a lot more money. But when you have the top down you're generally not going to want to go on the highway for extended trips. Its trade I've happily made since I bought mine back in 06
That's a big part of why I bought a hardtop. 50% of my driving is 1-2+ hrs on the highway. It's kind of dusty in AZ for fully exposed dry weather all day off roading adventures, I can always throw the door tops in back for wheeling or around town, and I also have a convertible for when I want the wind in my thinning and receding hair. I haven't turned on the radio in the convertible in at least 5 years.
seeraedave is offline   Quote Quick Reply
Old 03-23-2014, 09:30 AM   #12
Jeeper

WF Supporting Member
 
dale 3's Avatar
 
Join Date: May 2011
Posts: 764
Top down will require serious power with subs.Depends what is more important to you.I gave up rear seat removal (amps under seat)optional space.And zero trunk space,speaker's with inclosure.
Music clear and loud is more important to me than space for crap.
I use a rear carrier when offroad.Beach only for me.
__________________
CRUZIN THE BEACH
dale 3 is offline   Quote Quick Reply
Old 03-23-2014, 10:06 AM   #13
Jeeper
 
Join Date: Sep 2013
Location: Tampa
Posts: 274
Lets see...driven 16hr trips top down the whole way.

Havent had my top up or doors on for over a week and I travel for work 2-4 hours a day in my jeep on the highway.

Stock console sub placement with the Kicker 6.5" didnt cut it. Upgraded to one jl 10" downfiring in the rear and can hear my tunes plain as day and not even cranked on my stereo to max. No top no doors
05LJTampa is offline   Quote Quick Reply
Old 03-23-2014, 02:45 PM   #14
Jeeper
 
Saywhen's Avatar
 
Join Date: Mar 2014
Posts: 16
Thanks for all the input.....I'm gonna go with my original plan....New speakers and amp. Like some have said, top off, doors off, fat tires signing their own song, not much that will help other than $$$$. Thats not an option right now. (thanks X) and money well spent on the addiction elsewhere... :-). But the naysayers have to admit...when one of those "Ol" favorites get plugged in, ya got to crank it...no matter how old you are. Heck, if yer not enjoy'n life, yer not live'n.!! And besides, when else can you show your talent as a singer as you can when nobody else can hear how bad you really are except when yer on the big road... right? Seriously, I appreciate everybody's advice/input..... BTW....roll bar pads turned out 100+ on the repaint, look like new.!
Saywhen is offline   Quote Quick Reply
Old 03-25-2014, 11:45 AM   #15
Jeeper
 
Join Date: Aug 2013
Posts: 18
I've had good luck with my used infinity basslink. You can pick one up for under $100 and it's easy to put in and take out. Built in amp and it adds just that little bit you likely want.
gwells67 is offline   Quote Quick Reply
Old 03-30-2014, 10:35 AM   #16
GO STEELERS!

WF Supporting Member
 
geoffmarton's Avatar
 
Join Date: May 2012
Location: NE FL
Posts: 309
Quote:
Originally Posted by Saywhen View Post
Thanks for all the input.....I'm gonna go with my original plan....New speakers and amp. Like some have said, top off, doors off, fat tires signing their own song, not much that will help other than $$$$. Thats not an option right now. (thanks X) and money well spent on the addiction elsewhere... :-). But the naysayers have to admit...when one of those "Ol" favorites get plugged in, ya got to crank it...no matter how old you are. Heck, if yer not enjoy'n life, yer not live'n.!! And besides, when else can you show your talent as a singer as you can when nobody else can hear how bad you really are except when yer on the big road... right? Seriously, I appreciate everybody's advice/input..... BTW....roll bar pads turned out 100+ on the repaint, look like new.!
Yes, Boston needs to be CRANKED!!

Wire: there's too much noise in a Jeep to notice the difference with upgraded wire. Not sure where you got/are getting the speakers, but Crutchfield includes adapters so you can plug right into the stock plugs in the stock openings.

You will want a sub. The stock one isn't bad. I'm installing a 10" Kicker powered by a Kenwood 150W amp shortly, I just have to work out the security part.

12" subs are slow and muddy, IMO, unless you're using a LOT of power and have a LARGE "performance" space. 10" speakers are ideal for *most* automotive applications where the quality of sound is the #1 concern. One 10" sub would be plenty for what it sounds like you're trying to accomplish.

I don't get the "I can't hear it" crowd. Yes, I have to turn mine up when the top is down, and especially when the doors are off. But running a Sony head unit with stock speakers, there's enough volume - even for a guy who's been playing drums for over 30 years and who built car stereos semi-professionally in his teens. What? I can't hear you... (No, the quality isn't great, but plenty of volume)
geoffmarton is offline   Quote Quick Reply
Old 04-01-2014, 02:23 PM   #17
GO STEELERS!

WF Supporting Member
 
geoffmarton's Avatar
 
Join Date: May 2012
Location: NE FL
Posts: 309
Just ordered my speakers (minus the sub, which I already have). Polks all the way around. I wanted to do components in the front, but the price was too good to pass up - found them all in clearance/scratch and dent at Crutchfield. I can always add separate tweeters later if I hear a need.
geoffmarton is offline   Quote Quick Reply
Old 04-01-2014, 03:44 PM   #18
Jeeper
 
Majnoon's Avatar
 
Join Date: Apr 2013
Location: Springfield Missouri
Posts: 2,973
I have a very nice set up in my Jeep and it goes way loud enough to hear it top down clearly. I seldom do it. I think I'll go deaf if I listen to it top down all the time. Defiantly won't do it with my son in the car. Just food for thought for people wanting to achieve clear top down music.
Majnoon is offline   Quote Quick Reply
Old 04-04-2014, 05:35 PM   #19
GO STEELERS!

WF Supporting Member
 
geoffmarton's Avatar
 
Join Date: May 2012
Location: NE FL
Posts: 309
Lesson learned (and one I'd like to learn):

If you've tinkered with the stock sub and/or the quadratec replacement, you know that they're dual voice coil (for those not deep into stereos, that means both the L and R channels play through one speaker). Apparently, it's possible to "blow" one coil while the other remains intact.

I felt the speaker's movement along its axis, and couldn't definitively say whether it was blown or not. So I did an elimination test: I hooked up only one side. The first one sounded like crap. The other one sounded fine.

While not acoustically perfect, most recordings will have bass signals more-or-less balanced from L to R, so it shouldn't make a huge difference. In the long run, the console sub will be my "backup" anyway, for when security or space issues mean I can't have my real one in the back.

So that leads to my question - does anyone have a wiring diagram for this thing? I'm guessing the all black is ground, the black with red is positive, and the black with orange is the "on" signal wire - and the other 8 (EIGHT!?) are leads from all four (really Chrysler? Four speakers all feeding the sub?). Can anyone confirm or deny this?

Polks sound nice. Enough additional clarity that I could really hear how muddy the sub was. I can't wait to hear this setup with a real sub.

Next project in the queue: find all the dash rattles and get rid of them!!

geoffmarton is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



logo carid shop wrangler parts carid fender flares custom wheels store avs deflectors at carid
» Rates
Get low rates on auto insurance in Canada!

» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 03:40 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC