The Official 2014 audio upgrade thread
Ultimate HDF Member
Joined: Mar 2015
Posts: 6,446
Likes: 873
From: TEXAS
Originally Posted by CaCruizin
I have a BT4180 so does each pair of speakers need a line BT355? Am I going to hear an improvement using them?
T.
Tourer
Joined: Apr 2015
Posts: 361
Likes: 32
From: Ridgecrest, CA
Yes unfortunately this is the nature of the beast. HD has the Infotainment system set to run a .bin file that controls the EQ when the bike is on ACC so it sounds it's best on the showroom floor. Another .bin file takes control of the EQ when the bike is running to protect the crappy stock speakers from blowing up.
Here are a few questions that may be helpful.
What year and model bike?
How many speakers?
Has the bike ever been Flashed by the dealer?
Was the HU reset after installing software version 1.19.0?
Are the LL set to default?
Here are a few questions that may be helpful.
What year and model bike?
How many speakers?
Has the bike ever been Flashed by the dealer?
Was the HU reset after installing software version 1.19.0?
Are the LL set to default?
Club Member
Joined: Mar 2013
Posts: 303
Likes: 21
From: Ravenna, OH
I'm impressed with the wealth of info I have searched through....but... at the risk of sounding like a weirdo, I'm just looking to replace the 4 speakers only on my 2016. Im looking to just do a plug and play to improve existing boom speakers. Down the road I'm sure I will add an amp,etc.... but I'm just looking to get better sound quality from my radio. I have spent $2,300 this past month on stage 1 exhaust,handlebars and misc upgrades. I'm not in position to drop a bunch of money right now.
I'm looking for recommendations on 4 speakers I can swap out to existing factory system to get better quality. Right now I'm not concerned to get more volume.
Any thoughts?
I'm looking for recommendations on 4 speakers I can swap out to existing factory system to get better quality. Right now I'm not concerned to get more volume.
Any thoughts?
Road Captain
Joined: Feb 2016
Posts: 679
Likes: 109
From: Minnesota
I've been wondering this for a while but never asked the question until now... is there a way to trick the HU into thinking the switch is in the ACC position even when the bike is running? You would think that someone else has asked this question before but I've never run across this discussion on this forum. I have a complete infortainment system wiring diagram in my shop manual. I'll have to take a look to see if I can re-wire something to accomplish this.
I was just talking to Mike at Biketronics about this very thing last week and he said it would be nice if someone came up with a way to solve this.
Outstanding HDF Member
Joined: Nov 2014
Posts: 2,267
Likes: 135
From: Midland Twp, MI
I've been wondering this for a while but never asked the question until now... is there a way to trick the HU into thinking the switch is in the ACC position even when the bike is running? You would think that someone else has asked this question before but I've never run across this discussion on this forum. I have a complete infortainment system wiring diagram in my shop manual. I'll have to take a look to see if I can re-wire something to accomplish this.
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Tourer
Joined: Apr 2015
Posts: 361
Likes: 32
From: Ridgecrest, CA
So far the best fixes for this have been the JL Fix82 and 86 or a DSP. The JL Fix is a BT355 on steroids that will take the on/off bin and adjust the output so that it is the same input to the amp no matter the input to the JL Fix once calibrated, so on bin vs off bin will have the same output (please correct me if I'm off on this). The DSP is a step up from that and allows you to control just about everything, but takes some tuning knowledge and in the wrong hands can turn a bad *** system to trash. And please dont think I'm knocking the BT355 in any way. I've used all of these options and have been pleased and had success with each (JL Fix, DSP, BT355).
Outstanding HDF Member
Joined: Nov 2014
Posts: 2,267
Likes: 135
From: Midland Twp, MI
That sounds complicated (and expensive). Simply by figuring out a way to trick the HU into thinking the bike switch was in the ACC position, engine off, it would sound better without spending a dime! Like was mentioned before, Harley has the system "rigged" to sound best in ACC with the engine off. Someone with electrical knowledge and a good wiring diagram should be able to decipher where the HU is getting it's inforamtion from to determine between engine on and engine off.