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Custom Dodge Ram Interior Modifications - Custom Audio / Video All custom mods on the interior of your Dodge Ram. Dodge Ram stereo mods, alarms, electronics, shift knobs, upholstery, etc.


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Old 08-18-2011, 07:54 PM
mtnbkr123 mtnbkr123 is offline
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Default Build Thread - mtnbkr123 - subs, Fox Box and amp install

I am about to embark on my first "stereo install"...in my brand new Ram

It's actually only subs and an amp so it should be fine. Even for me. Haha!

I was asking lots of questions (thanks Chithead for answering my PMs) and it was suggested that I start a build thread so I could ask questions, and so other nooobs might be able to learn as I do.


Vehicle:
  • 2011 Ram 1500 Crew Cab Laramie with Magnagflow cat back and Airaid CAI
  • 10 speaker Alpine factory system with the Garmin nav head unit
Goal:
  • Remove the factory "sub" and replace it with a 2-12 Fox Box, amp and LC2i
  • Keep everything of decent quality
  • Total system replacement to be achieved in 3 stages:
    • Subs
    • Speakers
    • Head Unit
Components:


What was recommended for the Fox Box:
  • Alpine PDX-M12 - Alpine Monoblock 1200 Watt Amplifier $569.99
  • Alpine RUX-KNOB - Alpine Bass Boost Remote for New PDX Amplifiers $28.99
  • Alpine SWR-1243D 12" DVC 4-ohm Type-R Subwoofer $139.99 x2 = $280
  • Alpine KTE-12WG 12" Grill for Alpine 12" Subwoofers $21.99 x2 = $44
  • Audiocontrol LC2i 2-channel line output converter $119.99
  • Inline Fuse of some sort
What I'd like to get:
  • Sundown Audio SAX-1200D 1200W 1-Channel Monoblock Amplifier $394.99
  • SA-12 D4 - Sundown Audio 12" 600W Dual 4-Ohm SA Series $194.99 x 2 = $390
  • Audiocontrol LC2i 2-channel line output converter $119.99
  • Inline Fuse of some sort
Problem:
  • I may have to wait until my box arrives before I order the subs. The box is 7.75"deep with room for a 6.5" diameter magnet. I want to get the Sundown subs, which are 6.5" deep with a 7.75" diameter magnet. Not sure if those bad boys will fit. So...I have to wait for the box, check the sizing, and then order the components. I wish I could order the subs so that everything gets here around the same time.
Learned so far:
  • Big three is not necessary - if anything, look into an Optima Yellowtop.
  • Capacitor - waste of money.
  • The easiest spot to run the power wire for the amp is the clutch master cylinder block off plate in the firewall. It is plastic, so you don't have to worry about the wire shorting out against metal, and is easily replaceable or sealed back off.
  • Don't forget to grind down to bare metal wherever you run the ground wire, and try to keep it as short as possible, while still leaving room to maneuver the amp around if needed.
  • Don't run the RCA's near the power or ground wires. They will often pick up "noise" or a dirty signal when placed close to each other.
  • Battery post is 10mm to get the power wire attached.
  • A pretty straightforward wiring how to can be found here:
http://www.the12volt.com/caraudio/wo...igurations.asp
Questions at the moment:
  • 2 ohm or 4 ohm subs? I suspect 4 ohm running at 4 ohms if I go with the PDX M12, and 4 ohms running at 1 ohm if I go with the Sundown SAX-1200D. But not sure.
  • What kind of inline fuse(s) do I need? Where do I install them?
  • What kind of wiring do I need and how much?
  • Where to mount the amp?
  • Where to mount the LC2i?

Last edited by mtnbkr123; 08-18-2011 at 08:09 PM.
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Old 08-18-2011, 09:38 PM
Frank Drebin Frank Drebin is offline
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If it were me Id aim for a final load of 2 ohm on a mono amp. Im just not a fan of pushing an amp to 1 ohm. Id rather just buy a bigger amp.

If youre running a 4 channel bridged dont go lower than 4 ohm total.

Go to Princess auto - they have 4 ga wire kits for about 60 bucks. Wire looked fairly substantial. It will have a fuse holder with fuse as well as rca cables etc.

I am mounting my amps and processor behind the rear seat. With the foxbox youll get spacers that will give you fold down access behind there. I recently made a thread on it.

I ran the wire as you mentioned and attached the fuse holder to the top of the fuse block via industrial velcro.
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Old 08-18-2011, 10:17 PM
mtnbkr123 mtnbkr123 is offline
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Quote:
Originally Posted by Frank Drebin View Post
If it were me Id aim for a final load of 2 ohm on a mono amp. Im just not a fan of pushing an amp to 1 ohm. Id rather just buy a bigger amp.
I am confused about this. When I compare the Alpine and Sundown amps, the Alpine looks to have better specs, including power-wise - it is 1200 RMS at 4 or 2 ohms. The Sundown is 720 at 2 ohms and 360 at 4 ohms.

The owner of Fox Box is all over the Alpine stuff, while the guy at Woofers Etc is trying to shove the Sundown stuff down my throat like his first born's life literally depends on it. He is saying that that particular Sundown amp is far superior to that particular Alpine amp, and almost $200 cheaper. According to him, all the Sundown stuff is generally in a different class than all of the Alpine stuff, including the subs and those two amps.

I am not following him on the amp to amp debate. I can understand the subs (and maybe most of the Sundown stuff) being in a different class, but I don't get his point on these particular amps.

As for the subs, the guy at Fox Box says that for whatever reason, sonically, the Type R's match up beautifully with his box. And as a bonus, they are very inexpensive. And they are a guaranteed fit.

Not sure what to do about all that. The Alpine stuff will probably be a nice double or maybe even a triple, while I suspect that the Sundown stuff is going to be either a grand slam in the bottom of the 9th or nothing but air on a full count (if those subs don't fit the Fox Box). Or maybe my untrained ear won't notice much of a difference with either combo.
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Old 08-18-2011, 11:50 PM
Frank Drebin Frank Drebin is offline
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Well I suggest Massive Audio N4. Can be had for~$350 at sonic electronix.


You cant really go wrong with any selection.

Edit: With my build, I chose to spend more on drivers and less on amps. I figured if I got more power than I needed, I could turn down the gains and probably wouldn't notice.

Massive's Nano series has gotten very good reviews; a very good budget amp. They are extremely small, which shouldn't be an issue if you utilize the back wall.

I've heard very good things about the Image Dynamics IDQ V3 subs, I will be going with a single 12". I've also heard very good reviews on the Alpine subs.

This was a package I was very close to buying from Sonic, I just didn't need the extra amp. I wasn't able to read too much up on the RE amp, I think it would be more than adequate.
http://www.sonicelectronix.com/item_...Amplifier.html
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Last edited by Frank Drebin; 08-19-2011 at 12:38 AM.
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Old 08-19-2011, 03:19 AM
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Looks good, i would go with the alpline stuff, the problem with those sundown subwoofers is airspace, they probaly wouldnt have enough, with the alpine typer r's, in reality they dont need that much air space to sound good!
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Old 08-19-2011, 11:57 AM
mtnbkr123 mtnbkr123 is offline
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Quote:
Originally Posted by Ryank View Post
Looks good, i would go with the alpline stuff, the problem with those sundown subwoofers is airspace, they probaly wouldnt have enough, with the alpine typer r's, in reality they dont need that much air space to sound good!
Thanks. That's where I am leaning. I may wrap it up today.

Do you know the answer to this? How is the Alpine amp able to operate at 1200 RMS at either 4 or 2 ohms? Does this mean it won't be any louder at 2 ohms?

And if that's the case, I take it that it's preferable to run the speakers at 4 ohms. Correct?
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Old 08-19-2011, 03:34 PM
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Quote:
Originally Posted by mtnbkr123 View Post
Thanks. That's where I am leaning. I may wrap it up today.

Do you know the answer to this? How is the Alpine amp able to operate at 1200 RMS at either 4 or 2 ohms? Does this mean it won't be any louder at 2 ohms?

And if that's the case, I take it that it's preferable to run the speakers at 4 ohms. Correct?
I would just go with two dual 2ohm subs, which would give you a final impedance of 2 ohms to match up with the amplifier.
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Last edited by Ryank; 08-19-2011 at 03:36 PM.
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Old 08-19-2011, 03:42 PM
mtnbkr123 mtnbkr123 is offline
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Quote:
Originally Posted by Ryank View Post
I would just go with two dual 2ohm subs, which would give you a final impedance of 2 ohms to match up with the amplifier.
Isn't it better sound quality at 4?
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Old 08-19-2011, 05:51 PM
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Not in my opinion, its really up too you, since the amp puts out the same power at 2 or 4 ohm.
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Old 08-19-2011, 09:12 PM
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Subscribed..........
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