Front Speaker \ Amp Setup
Stellar HDF Member
Joined: Dec 2017
Posts: 3,368
Likes: 689
From: indiana
They're just under 5in wide each so I think they should fit side by side above the radio. I'm thinking I can run one set of 4 gauge power and ground wires from the battery and put a distribution block in the fairing. I wouldn't need RCA cables, I can just make a small harness to split the old speaker output from the head unit into both high input connectors. Does this sound reasonable?
Road Master
Joined: Jul 2010
Posts: 996
Likes: 29
From: Albany, NY
If you run both in bridge mode then yea they will make about the same power but keep in mind that you need to run 2 of everything (wire harness, rca spliters). but I like the idea and that is thinking out of the box. I just wonder if 2 of those will fit on a standard amp tray. $650-700 for a 1200.4 vs $450-500 for 2 400.4's hell yea.
Road Captain
Joined: Aug 2005
Posts: 510
Likes: 78
Trying to follow this logic as I myself am in the middle of my next build. Here are the SD Spec (based on the 14.4v numbers simply for comparison):
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Originally Posted by mrmagloo
Trying to follow this logic as I myself am in the middle of my next build. Here are the SD Spec (based on the 14.4v numbers simply for comparison):
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
Road Master
Joined: Jul 2010
Posts: 996
Likes: 29
From: Albany, NY
Trying to follow this logic as I myself am in the middle of my next build. Here are the SD Spec (based on the 14.4v numbers simply for comparison):
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
400.4 EVOX (Seems they only have a 4 Ohm version)
Bridge Power @ 14.4V @ 4Ω: 2 X 223 WRMS
So you have 223w each for the Fairing And, the other Amp runs the lowers or rear at 223w each as well.
1200.4 EVOX 2-Ohm
Bridge Power @ 14.4V @ 2Ω: 2 X 669 WRMS
So running in parallel, you will have 334w each for the Fairing and the 3&4 at 334w each for the Lowers or Rears.
I'm not following how the comments that the output between the two options are the same? I think the problem with this theory is, the 400.4 EVOX only comes in 4 Ohm.
I actually went through this same thinking, but with considering two of the 800.4 EVOX. But there again, when I found they don't make a 2-Ohm version, that angle went down in flames.
So with my 4 GZ's in the Fairing and Lowers, I went with a 1200.4 EVOX 2-Ohm to run in parallel expecting to get a solid 300w each, which I plan to tame down to approx 250-275 to all 4 speakers, leaving some decent headroom. Based on the above discussion, the pair of 400.4 4-Ohms, wouldn't get more than real world around 200w each, right? Where am I getting tripped up?
Please confirm my old math still works, before I start rolling up my sleeves!
Road Captain
Joined: Aug 2005
Posts: 510
Likes: 78
No problem bud. Was more worried I screwed up my plans in the typical epic style. Thank goodness I'm OK. lol.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider
Verdad Gallardo
Thread
Thread Starter
Forum
Replies
Last Post