Touring Models Road King, Road King Custom, Road King Classic, Road Glide, Street Glide, Electra Glide, Electra Glide Classic, and Electra Glide Ultra Classic bikes.
Sponsored by:
Sponsored by:

Question for you audio guru's....

Thread Tools
 
Search this Thread
 
Old Sep 12, 2012 | 02:20 AM
  #1  
bdjhog's Avatar
bdjhog
Thread Starter
|
Road Captain
Joined: Jun 2006
Posts: 721
Likes: 1
From: Buckeye, AZ
Default Question for you audio guru's....

I recently bought a Hogtunes 24.2 amp and 4 hogtunes speakers from another member. The speakers are rated at 5.75 Ohms and the amp is stable down to 2 Ohms. I have the two pair running in parallel to the upper fairing and lowers. With this set up each speaker is running at 2.875 Ohms [Zt = (Za x Zb) / (Za + Zb)] and therefore the amp is not functioning at full potential. I have a pair of 5.25" speakers from an old car audo set up where the impedence is 3 Ohms. My question is can I mix speakers of different impedence in parallel so long as I don't drop below the amp rating of 2 Ohms? Running one pair of the 5.75 Ohm speakers with the 3 Ohm speakers will give a resistence of 1.971 Ohms which I figure is close enough to the amp rating of 2 Ohms. I just don't know whether each speaker will get the same power or if the 3 Ohm speakers will get a higher output than the 5.75 Ohm speakers. Thanks.
 
Reply
Old Sep 12, 2012 | 06:14 AM
  #2  
jjnoble's Avatar
jjnoble
Outstanding HDF Member
Joined: Jul 2010
Posts: 2,727
Likes: 6
Default

Kind of late to ask questions. You already have everything, just hook it up and see if you like the sound. If you do then keep it, if not then change it. I think it is a good idea to keep all the ohms the same. The ohms are not going to change the output of the channel, if you have one channel that has to push through higher ohms than another channel there will be a chance of blowing the speakers of the lesser ohm channel. Just something to consider.
 
Reply
Old Sep 12, 2012 | 10:58 AM
  #3  
bdjhog's Avatar
bdjhog
Thread Starter
|
Road Captain
Joined: Jun 2006
Posts: 721
Likes: 1
From: Buckeye, AZ
Default

Originally Posted by jjnoble
Kind of late to ask questions. You already have everything, just hook it up and see if you like the sound. If you do then keep it, if not then change it. I think it is a good idea to keep all the ohms the same. The ohms are not going to change the output of the channel, if you have one channel that has to push through higher ohms than another channel there will be a chance of blowing the speakers of the lesser ohm channel. Just something to consider.
My point of asking questions first is so that I don't just "hook it up" only find out that it was an ill conceived idea and I end up blowing the amp and/or the speakers. The Ohms of the speakers directly affects the output of the amp. In any event each channel would be seeing the same resistance as I would have one 5.75 Ohm speaker and one 3 Ohm speaker running in parallel on each channel.
 
Reply
Old Sep 12, 2012 | 11:02 AM
  #4  
Hammy's Avatar
Hammy
Tourer
Joined: Aug 2007
Posts: 404
Likes: 1
From: Northshore in Massachusetts
Default

If the resistance is too high you'll blow the amp.

ohm MY!
 
Reply
Old Sep 12, 2012 | 11:23 AM
  #5  
0ldhippie's Avatar
0ldhippie
Ultimate HDF Member
Joined: Mar 2012
Posts: 6,129
Likes: 143
From: Santa Cruz
Default

Just because the amp is stable down to 2 ohms don't mean ya ought to run it there. I wouldn't go under 2ohms at all. And yes, the 5.75ohm speakers will pull more watts than the 3ohm ones.
 
Reply
Old Mar 19, 2015 | 07:12 PM
  #6  
davidlaclair's Avatar
davidlaclair
4th Gear
Joined: Jan 2011
Posts: 8
Likes: 0
Default

Does anyone know what is a good bluetooth, that can be wired into a stock hardon karmin radio.
 
Reply
Old Mar 20, 2015 | 10:01 AM
  #7  
kojak's Avatar
kojak
Seasoned HDF Member
15 Year Member
Community Builder
Liked
Loved
Joined: Jan 2007
Posts: 5,564
Likes: 3,979
From: Virginia
Default

Originally Posted by bdjhog
I recently bought a Hogtunes 24.2 amp and 4 hogtunes speakers from another member. The speakers are rated at 5.75 Ohms and the amp is stable down to 2 Ohms. I have the two pair running in parallel to the upper fairing and lowers. With this set up each speaker is running at 2.875 Ohms [Zt = (Za x Zb) / (Za + Zb)] and therefore the amp is not functioning at full potential. I have a pair of 5.25" speakers from an old car audo set up where the impedence is 3 Ohms. My question is can I mix speakers of different impedence in parallel so long as I don't drop below the amp rating of 2 Ohms? Running one pair of the 5.75 Ohm speakers with the 3 Ohm speakers will give a resistence of 1.971 Ohms which I figure is close enough to the amp rating of 2 Ohms. I just don't know whether each speaker will get the same power or if the 3 Ohm speakers will get a higher output than the 5.75 Ohm speakers. Thanks.
Isn't the hogtunes amp's internal impedance 2 ohms and its a 2 channel amp? If you hook the speakers in parallel, you essentially are doubling your amp to 4 ohms impedance going into 5.75 ohm speakers. Or going into 3 ohm speakers if you hook them up the same way. IMO its not ideal to do that either way. If you had a amp with say a 4 ohm impedance and hooked it to a pair of 8 ohm speakers in parallel, then the setup would work. Try it and see how it sounds, I guess.
 
Reply
Old Mar 20, 2015 | 11:04 AM
  #8  
SBates08's Avatar
SBates08
Seasoned HDF Member
Joined: Jan 2013
Posts: 10,637
Likes: 1,246
From: Lake, Ms
Default

Why not post this question in the audio section. I'm certain you'll find the answers your looking for.

2010 Limited with some stuff!!
 
Reply
HD Forum Stories

The Best of Harley-Davidson for Lifelong Riders

story-0

7 Surprising Harley-Davidson Products that Are Not Motorcycles

 Verdad Gallardo
story-1

8 Best Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-2

10 Worst Harley-Davidson Motorcycles Ever

 Pouria Savadkouei
story-3

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

 Verdad Gallardo
story-4

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

 Verdad Gallardo
story-5

Harley-Davidson Reveals Super Cool Cafe Racer Concept

 Verdad Gallardo
story-6

Engraved Rebellion: Inside Bundnerbike's Glam Rock II

 Verdad Gallardo
story-7

10 Motorcycles You Should Never Buy

 Joe Kucinski
story-8

10 Things Harley-Davidson Needs to Fix in 2026

 Verdad Gallardo
story-9

Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

 Verdad Gallardo
Old Mar 20, 2015 | 11:21 AM
  #9  
Copyless's Avatar
Copyless
Supporter
Joined: Mar 2011
Posts: 587
Likes: 1
From: Ga.
Default

Originally Posted by bdjhog
I recently bought a Hogtunes 24.2 amp and 4 hogtunes speakers from another member. The speakers are rated at 5.75 Ohms and the amp is stable down to 2 Ohms. I have the two pair running in parallel to the upper fairing and lowers. With this set up each speaker is running at 2.875 Ohms [Zt = (Za x Zb) / (Za + Zb)] and therefore the amp is not functioning at full potential. I have a pair of 5.25" speakers from an old car audo set up where the impedence is 3 Ohms. My question is can I mix speakers of different impedence in parallel so long as I don't drop below the amp rating of 2 Ohms? Running one pair of the 5.75 Ohm speakers with the 3 Ohm speakers will give a resistence of 1.971 Ohms which I figure is close enough to the amp rating of 2 Ohms. I just don't know whether each speaker will get the same power or if the 3 Ohm speakers will get a higher output than the 5.75 Ohm speakers. Thanks.


You can do exactly what you are speaking of, and you also are correct in that every speaker will only use the amount of power it had the load for, so if you put out 50w to that section then some speakers would use 20w while the others used 30w of the power, I have not looked at the speakers you used or done any math, so I did not give you numbers that correlate to anything you described, but I glanced over you post and know this is what you wanted to know.


Not something normally done though, because the amp will only produce a certain amount of power and on a bike the amp usually is not large enough to put out the amount of power to connect several speakers to. In auto applications, sometimes it is done with very large amp that produce a few thousand watts.
 

Last edited by Copyless; Mar 20, 2015 at 11:27 AM.
Reply
Old Mar 20, 2015 | 03:56 PM
  #10  
FlamedFXR's Avatar
FlamedFXR
Stellar HDF Member
15 Year Member
Liked
Loved
Community Favorite
Joined: Jul 2009
Posts: 2,825
Likes: 2,140
From: Hope Mills NC, bye CA!!
Default

Old thread....new question....
 
Reply



All times are GMT -5. The time now is 07:15 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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
story-9
Southpaw Super Glide: A Left-Hand-Drive 1979 Harley FXE Built to Fit the Rider

Slideshow: Graeme Billington's left-hand-drive Shovelhead is as much about problem-solving as it is about classic Harley form.

By Verdad Gallardo | 2025-12-30 11:27:08


VIEW MORE