Bridging a XD400/4v2 Amp Questions
Thread Starter
|
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
Bridging a XD400/4v2 Amp Questions
Is it possible to get "stereo" output when bridging this amp to two speakers?
The manual has this to say:
When a pair of the XD400/4v2s channels are
operating in bridged mode, the output will be in
mono (only one channel). This mono channel can
contain only right channel information, only left
channel information, or the sum of the signals
from right and left input channels. In order to
achieve one of these options, configure the inputs
to that pair of channels in one of these two ways:
1) Left Channel Only or Right Channel Only
Information: If you wish to send a left-only or
right-only signal to a pair of the XD400/4v2s
channels you must use a Y-Adaptor to split
the single channel signal into both left and
right RCA inputs of the bridged channel
pair. This option is used when deploying a pair of the XD400/4v2s channels to drive left
channel speakers only and the other pair of the
XD400/4v2s channels to drive right channel
speakers only.
I have a couple y-adapters, but I'm just not 100% sure how they are connected.
Do they go:
Head Unit "R" to Amp CH 1&2 and CH 3&4 "R"?
Head Unit "L" to Amp CH 1&2 and CH 3&4 "L"?
Thanks in advance!
The manual has this to say:
When a pair of the XD400/4v2s channels are
operating in bridged mode, the output will be in
mono (only one channel). This mono channel can
contain only right channel information, only left
channel information, or the sum of the signals
from right and left input channels. In order to
achieve one of these options, configure the inputs
to that pair of channels in one of these two ways:
1) Left Channel Only or Right Channel Only
Information: If you wish to send a left-only or
right-only signal to a pair of the XD400/4v2s
channels you must use a Y-Adaptor to split
the single channel signal into both left and
right RCA inputs of the bridged channel
pair. This option is used when deploying a pair of the XD400/4v2s channels to drive left
channel speakers only and the other pair of the
XD400/4v2s channels to drive right channel
speakers only.
I have a couple y-adapters, but I'm just not 100% sure how they are connected.
Do they go:
Head Unit "R" to Amp CH 1&2 and CH 3&4 "R"?
Head Unit "L" to Amp CH 1&2 and CH 3&4 "L"?
Thanks in advance!
Intermediate
Joined: Jan 2018
Posts: 37
Likes: 3
From: Austin
I'm no guru but I'm not sure why you would do any of that. I have the JL M400/4 which is the marine version of that exact amp.
I run input mode 2 channel and just put the RCAs from the BT line leveler into inputs L and R for ch 1/2. I've run bridged and 4 speakers and I have stereo effects left to right in songs that contain them. If I'm wrong I am certain someone with a lot more knowledge will correct me, but that's what I have done.
I run input mode 2 channel and just put the RCAs from the BT line leveler into inputs L and R for ch 1/2. I've run bridged and 4 speakers and I have stereo effects left to right in songs that contain them. If I'm wrong I am certain someone with a lot more knowledge will correct me, but that's what I have done.
Thread Starter
|
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
I'm no guru but I'm not sure why you would do any of that. I have the JL M400/4 which is the marine version of that exact amp.
I run input mode 2 channel and just put the RCAs from the BT line leveler into inputs L and R for ch 1/2. I've run bridged and 4 speakers and I have stereo effects left to right in songs that contain them. If I'm wrong I am certain someone with a lot more knowledge will correct me, but that's what I have done.
I run input mode 2 channel and just put the RCAs from the BT line leveler into inputs L and R for ch 1/2. I've run bridged and 4 speakers and I have stereo effects left to right in songs that contain them. If I'm wrong I am certain someone with a lot more knowledge will correct me, but that's what I have done.
Last edited by MikeTD3; Feb 20, 2018 at 08:02 PM.
Intermediate
Joined: Jan 2018
Posts: 37
Likes: 3
From: Austin
Bridging on the output (speaker) side is what determines that. So if you are bridging the channels you will get 200w per pair (1/2 and 3/4) and a single speaker getting that 200 from each channel pair.
I think the whole tricky stuff about left and right signal info vs mono summed when bridged is probably moot at 60mph+. I don't think you can hear enough nuance for that to matter vs just getting the full signal of the music and playing it with lots of power out of good speakers. Just my limited experience so far.
EDIT: Kenwood will still have low level RCA outs - which is really all the line leveler is providing. Same thing.
I think the whole tricky stuff about left and right signal info vs mono summed when bridged is probably moot at 60mph+. I don't think you can hear enough nuance for that to matter vs just getting the full signal of the music and playing it with lots of power out of good speakers. Just my limited experience so far.
EDIT: Kenwood will still have low level RCA outs - which is really all the line leveler is providing. Same thing.
Last edited by slythetove; Feb 20, 2018 at 08:06 PM.
Thread Starter
|
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
Bridging on the output (speaker) side is what determines that. So if you are bridging the channels you will get 200w per pair (1/2 and 3/4) and a single speaker getting that 200 from each channel pair.
I think the whole tricky stuff about left and right signal info vs mono summed when bridged is probably moot at 60mph+. I don't think you can hear enough nuance for that to matter vs just getting the full signal of the music and playing it with lots of power out of good speakers. Just my limited experience so far.
EDIT: Kenwood will still have low level RCA outs - which is really all the line leveler is providing. Same thing.
I think the whole tricky stuff about left and right signal info vs mono summed when bridged is probably moot at 60mph+. I don't think you can hear enough nuance for that to matter vs just getting the full signal of the music and playing it with lots of power out of good speakers. Just my limited experience so far.
EDIT: Kenwood will still have low level RCA outs - which is really all the line leveler is providing. Same thing.
Yep.....I meant no BTs needed
Last edited by MikeTD3; Feb 20, 2018 at 08:13 PM.
Intermediate
Joined: Jan 2018
Posts: 37
Likes: 3
From: Austin
I'm glad to help! Believe me, 4 weeks ago none of this made any sense to me either. The folks on this forum are incredibly knowledgeable and friendly. I know for sure if I've given you any incorrect info at all they will sort that out too! One of the best forums I've ever been on honestly.
Advanced
Joined: May 2014
Posts: 89
Likes: 16
From: El Paso Tx
JLMX400/4 wiring trouble
I just installed the JLMX400/4 with fairing DDAW's i tried using JL wiring diagram and tried 2 bridged Mono Outputs but could only get 1 speaker to work. i then tried 2 bridged stereo output config. used both front and rear rca's off amp used y splitter between the 2 connections and the line leveler. then used + & - from all 4 channels I have both speakers working and listened to whole lotta love by zepplin seem to seems to be working fine. i still have to set gains they are very loud but thought it may be a little warmer.
just my 2 cents just piggybacking off this thread as i used it during my install process
just my 2 cents just piggybacking off this thread as i used it during my install process
Trending Topics
Thread Starter
|
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
I just installed the JLMX400/4 with fairing DDAW's i tried using JL wiring diagram and tried 2 bridged Mono Outputs but could only get 1 speaker to work. i then tried 2 bridged stereo output config. used both front and rear rca's off amp used y splitter between the 2 connections and the line leveler. then used + & - from all 4 channels I have both speakers working and listened to whole lotta love by zepplin seem to seems to be working fine. i still have to set gains they are very loud but thought it may be a little warmer.
just my 2 cents just piggybacking off this thread as i used it during my install process
just my 2 cents just piggybacking off this thread as i used it during my install process
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
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
Road Warrior
Joined: Jan 2013
Posts: 1,812
Likes: 122
From: Joliet IL.
With 998 you have 3 set's of RCA outputs..Front L&R...Rear L&R...Sub L&R... You would run HU Front L&R OUTPUT to amp INPUT Front L&R like normal! Same with Rear HU out L&R to amp input L&R! Now on amp speaker terminals you have (front left) FL +&- ...FR +&-...take + from FL...and- from FR to combine 2 channels into 1! do the same for rear! Easier to google a diagram for the speaker part ..bridging 4 channel amp to two speakers. NO NEED FOR Y SPLITTERS WITH 998! Hope this helps!
Thread Starter
|
Road Master
Joined: Jan 2012
Posts: 1,090
Likes: 243
From: Maine
With 998 you have 3 set's of RCA outputs..Front L&R...Rear L&R...Sub L&R... You would run HU Front L&R OUTPUT to amp INPUT Front L&R like normal! Same with Rear HU out L&R to amp input L&R! Now on amp speaker terminals you have (front left) FL +&- ...FR +&-...take + from FL...and- from FR to combine 2 channels into 1! do the same for rear! Easier to google a diagram for the speaker part ..bridging 4 channel amp to two speakers. NO NEED FOR Y SPLITTERS WITH 998! Hope this helps!
I found the post below on a car forum that gives me stereo on the front channels only (head unit). This way if I decide to add lid speakers the rear channels are unaffected.
- set input switch to 4 channel (I do not have any idea why JL Audio omitted this small detail from the manual)
- get 2 Y RCA splitters
- split LC2i left RCA output into XD400/4 CH1 and CH2 RCA inputs. Bridge CH1 and CH2 outputs like your photo, that's your left SWS-8
- split LC2i right RCA output into XD400/4 CH3 and CH4 RCA inputs. Bridge CH3 and CH4 outputs like your photo, that's your right SWS-8
Thanks for the input!
Thread
Thread Starter
Forum
Replies
Last Post
bhibbert80
Audio Systems
7
Apr 29, 2014 12:08 PM