Audio Systems Find answers to all of your stereo, speaker and other audio technology questions here.
Sponsored by:
Sponsored by:

Flash a must?

Thread Tools
 
Search this Thread
 
Old Apr 11, 2019 | 05:37 AM
  #1  
JHC210's Avatar
JHC210
Thread Starter
|
Road Master
15 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2010
Posts: 936
Likes: 55
From: C. Texas
Default Flash a must?

2019 SGS.....Planning on adding the BT4180 plus speakers in the faining and lowers. Also using the BT line levelers. I understand I need to flash the GTS head unit for 4 speakers no amp (Ultra) to get the best sound with the line levelers. But if I didn't get it flashed, how would it sound? Is the flash a must do?
 
Reply
Old Apr 11, 2019 | 06:20 AM
  #2  
Tailwind's Avatar
Tailwind
Ultimate HDF Member
Joined: Mar 2015
Posts: 6,446
Likes: 873
From: TEXAS
Default

Originally Posted by JHC210
2019 SGS.....Planning on adding the BT4180 plus speakers in the faining and lowers. Also using the BT line levelers. I understand I need to flash the GTS head unit for 4 speakers no amp (Ultra) to get the best sound with the line levelers. But if I didn't get it flashed, how would it sound? Is the flash a must do?
SQ difference is negligible with that specific flash thus it's mainly to open up fade control option on ur HU. If u don't think u will want to adjust the balance/fade of ur fairing & lowers on then fly roll w ur current flash.
Also consider that since u don't have an amp w gain controls, u cannot set up the balance of those speaker locations with the amp gains but u can always adjust the BT355 gains to get u the desired balance for ur riding style and speakers in play. Just the gains on the LL brother not to exceed the 1 o'clock position. Don't jack w the HPF.

T
 

Last edited by Tailwind; Apr 11, 2019 at 06:22 AM.
Reply
Old Apr 11, 2019 | 06:40 AM
  #3  
travelingypsye's Avatar
travelingypsye
Stellar HDF Member
5 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Dec 2017
Posts: 3,371
Likes: 689
From: indiana
Default

JHC, have you bought that bt 4180 yet? As Tailwind eluded too, that amp has no adjusts to it and thus can be hard to match speakers with. I would suggest a different amp that you can adjust gains so to balance your fairing with the lowers. Depending on what speakers you get, that balance is crucial if mixing coax/components in the fairing and pa style speakers in the lowers. Aslo having the ability to adjust your hpf is also important when blending fairing and lowers.


The flash you are talking about (0 amp/4 channel) does not change the SQ from your currant flash. It only allows fade control to operate on your HU. If you don't have fade control, you will only need the front bt355 LL. You can balance the fairing and lowers by setting gains on each.
 
Reply
Old Apr 11, 2019 | 06:49 PM
  #4  
marshallb's Avatar
marshallb
Road Warrior
Joined: Jun 2017
Posts: 1,832
Likes: 174
From: Indiana
Default

Originally Posted by travelingypsye
You can balance the fairing and lowers by setting gains on each.
Man wish I could remember who flamed the crap out of me for suggesting that one time. It is a true statement and good advice.
 
Reply
Old Apr 11, 2019 | 06:54 PM
  #5  
travelingypsye's Avatar
travelingypsye
Stellar HDF Member
5 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Dec 2017
Posts: 3,371
Likes: 689
From: indiana
Default

Originally Posted by marshallb
Man wish I could remember who flamed the crap out of me for suggesting that one time. It is a true statement and good advice.
I still get flamed when telling someone to tune the line levelers but if you leave them at default, you are leaving a lot on the table.
 
Reply
Old Apr 11, 2019 | 07:04 PM
  #6  
marshallb's Avatar
marshallb
Road Warrior
Joined: Jun 2017
Posts: 1,832
Likes: 174
From: Indiana
Default

I have had my eye out for an RTA lately so I can see what the BT LL does exactly. Haven't found the right deal yet.
 
Reply
Old Apr 11, 2019 | 07:18 PM
  #7  
InthewindMN's Avatar
InthewindMN
Outstanding HDF Member
Joined: Jan 2014
Posts: 2,482
Likes: 239
From: Minnesota
Default

Originally Posted by marshallb
I have had my eye out for an RTA lately so I can see what the BT LL does exactly. Haven't found the right deal yet.
That would be awesome to know, as well as the differences in flashes.
 
Reply
Old Apr 11, 2019 | 07:20 PM
  #8  
marshallb's Avatar
marshallb
Road Warrior
Joined: Jun 2017
Posts: 1,832
Likes: 174
From: Indiana
Default

Yes exactly!
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Times Harley-Davidson Chucked Tradition Out the Window

 Verdad Gallardo
story-1

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-2

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-4

Killer Custom's Jail Break Is The Breakout That Refused to Blend In

 Verdad Gallardo
story-5

Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

 Verdad Gallardo
story-6

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-7

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-8

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-9

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
Old Apr 12, 2019 | 05:53 AM
  #9  
JHC210's Avatar
JHC210
Thread Starter
|
Road Master
15 Year Member
Liked
Loved
Community Favorite
Joined: Jun 2010
Posts: 936
Likes: 55
From: C. Texas
Default

Originally Posted by travelingypsye
JHC, have you bought that bt 4180 yet? As Tailwind eluded too, that amp has no adjusts to it and thus can be hard to match speakers with. I would suggest a different amp that you can adjust gains so to balance your fairing with the lowers. Depending on what speakers you get, that balance is crucial if mixing coax/components in the fairing and pa style speakers in the lowers. Aslo having the ability to adjust your hpf is also important when blending fairing and lowers.


The flash you are talking about (0 amp/4 channel) does not change the SQ from your currant flash. It only allows fade control to operate on your HU. If you don't have fade control, you will only need the front bt355 LL. You can balance the fairing and lowers by setting gains on each.
I have purchased the BT4180 already so going to run with it for awhile. I will attempt to adjust the LLs and see how that goes as suggested. I assume I need 2, one for the fairing and one for the lower fairing speakers. Correct?
 
Reply
Old Apr 12, 2019 | 06:14 AM
  #10  
travelingypsye's Avatar
travelingypsye
Stellar HDF Member
5 Year Member
Photogenic
Photoriffic
Shutterbug
Joined: Dec 2017
Posts: 3,371
Likes: 689
From: indiana
Default

Originally Posted by JHC210
I have purchased the BT4180 already so going to run with it for awhile. I will attempt to adjust the LLs and see how that goes as suggested. I assume I need 2, one for the fairing and one for the lower fairing speakers. Correct?
If you have fade on your hu then you will need both front and rear line levelers. As far as adjusting the LL, I will caution you that they are VERY sensitive and do not take much to tweak them. When you get ready to tweak those line levelers, pm me and I can guide you thru the process.
 
Reply



All times are GMT -5. The time now is 07:17 AM.

story-0
7 Times Harley-Davidson Chucked Tradition Out the Window

Slideshow: Harley-Davidson built its reputation on nostalgia, but every so often, the company took a hard left turn into the future.

By Verdad Gallardo | 2026-05-20 11:18:19


VIEW MORE
story-1
7 Surprising Harley-Davidson Products that Are Not Motorcycles

Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.

By Verdad Gallardo | 2026-04-29 16:50:35


VIEW MORE
story-2
8 Best Harley-Davidson Motorcycles Ever

Slideshow: Not every Harley gets it right, but these are the ones that genuinely earned their reputation.

By Pouria Savadkouei | 2026-04-15 14:23:21


VIEW MORE
story-3
10 Worst Harley-Davidson Motorcycles Ever

Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.

By Pouria Savadkouei | 2026-04-01 20:01:09


VIEW MORE
story-4
Killer Custom's Jail Break Is The Breakout That Refused to Blend In

Slideshow: Killer Custom's "Jail Breaker" build focuses more on stance and visual aggression than mechanical overhaul.

By Verdad Gallardo | 2026-03-18 19:20:32


VIEW MORE
story-5
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?

Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.

By Verdad Gallardo | 2026-03-07 16:15:30


VIEW MORE
story-6
Harley-Davidson Reveals Super Cool Cafe Racer Concept

Slideshow: Harley-Davidson's new RMCR concept revives the café racer formula with modern hardware-and it may be exactly the reset the company needs.

By Verdad Gallardo | 2026-03-04 12:23:37


VIEW MORE
story-7
Engraved Rebellion: Inside Bundnerbike's Glam Rock II

Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.

By Verdad Gallardo | 2026-02-24 18:19:44


VIEW MORE
story-8
10 Motorcycles You Should Never Buy

Slideshow: There is no shortage of great motorcycles to buy, but we would avoid these ten.

By Joe Kucinski | 2026-02-19 14:50:51


VIEW MORE
story-9
10 Things Harley-Davidson Needs to Fix in 2026

Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.

By Verdad Gallardo | 2026-01-13 18:33:17


VIEW MORE