Speaker upgrade
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Tourer
Joined: May 2007
Posts: 295
Likes: 20
From: Elgin, Okla.
Speaker upgrade
I've done a search and looked through the post on speakers but can't seem to find an answer to what I"m looking for, I've got an 02 E-Glide which I understand requires 8ohm speakers, I've seen it mentioned about running speakers in tandem, and trying to understand this, if I hookup a 4ohm speaker and slice the wires and hook up another 4ohm speaker on the same wire, \\; would that not give me 8ohms resistance to the stereo??? or am I thinking about this backwards, I can find plenty of 4ohm speakers around but no 8ohms without ordering Hogtunes or J&\\;M. Thanks
Chris
Chris
Intermediate
Joined: Feb 2008
Posts: 26
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From:
RE: Speaker upgrade
I found this online:
If you connect your amp to one speaker, the ohms rating is equal to that speaker's ohms rating. An 8 ohms speaker would have a rating of 8 ohms.
If you wire two or more speakers in series, you add the ohms rating together to get the total ohms. This increases the total resistance, reducing the total acoustical ouput. That is, because the electricity has to flow through each speaker one at a time, each speaker adds it's resistance to the whole. The formula is as follows: [blockquote] Speaker A + Speaker B \\;= Total Ohms Rating
8 Ohms + 8 Ohms = 16 Ohms Two 8 Ohms speakers wired in series will have a total rating of 16 ohms.[/blockquote] If you wire your speaker in parallel, this reduces the total resistance increasing the total output. That is, because electricity flows through all of the speakers simultaneously, each speaker added reduces the resistance of the chain.
Resistance = (Speaker A x Speaker B) / (Speaker A + Speaker B)
Resistance = (8 Ohms \\;x 8 Ohms) / (8 Ohms + 8 Ohms)
Resistance = 64 / 16
Resistance = 4 Ohms
If you connect your amp to one speaker, the ohms rating is equal to that speaker's ohms rating. An 8 ohms speaker would have a rating of 8 ohms.
If you wire two or more speakers in series, you add the ohms rating together to get the total ohms. This increases the total resistance, reducing the total acoustical ouput. That is, because the electricity has to flow through each speaker one at a time, each speaker adds it's resistance to the whole. The formula is as follows: [blockquote] Speaker A + Speaker B \\;= Total Ohms Rating
8 Ohms + 8 Ohms = 16 Ohms Two 8 Ohms speakers wired in series will have a total rating of 16 ohms.[/blockquote] If you wire your speaker in parallel, this reduces the total resistance increasing the total output. That is, because electricity flows through all of the speakers simultaneously, each speaker added reduces the resistance of the chain.
Resistance = (Speaker A x Speaker B) / (Speaker A + Speaker B)
Resistance = (8 Ohms \\;x 8 Ohms) / (8 Ohms + 8 Ohms)
Resistance = 64 / 16
Resistance = 4 Ohms
Thread Starter
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Tourer
Joined: May 2007
Posts: 295
Likes: 20
From: Elgin, Okla.
RE: Speaker upgrade
So based on what your saying Okie, I can hook up the 4ohm Pioneers or Sony's that walmart has along with the 4ohm tweeters and it would equal 8 ohms on each side so I'd be ok then but proabably not pushing enough juice to make them work good. Thanks.
Chris
Chris
4ohm speaker and addind a 4ohm resistor
I'm looking for an answer to this question also.
See Post
https://www.hdforums.com/forum/showp...&postcount=362
Any advice would be helpful.
See Post
https://www.hdforums.com/forum/showp...&postcount=362
Any advice would be helpful.
Road Warrior
Joined: May 2008
Posts: 1,287
Likes: 3
From: murfreesboro tn.
i not sure were you got your info. i have seen this q on 3 or 4 different threads. 02 flht has 4 ohm speakers. the radio req. 4 ohm speakers. i have never any harley radio from the 80s and up with 8 ohm speakers
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Outstanding HDF Member
Joined: Feb 2008
Posts: 2,706
Likes: 1
From: Sunland, CA
thats what i was thining 4 or 2 ohms my 06 has 2 ohms speakers i replaced them
with jbl,s gto527 about $ 60.00 pr-ride safe
with jbl,s gto527 about $ 60.00 pr-ride safe
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I have an 03 and 04 Radio Sound Harley radio.
One radio is 2 channel and one is the ultra 4 channel version.
This is what I had found...
"The 1998-2005 Harley systems are spec'd for 8-ohm speakers, if the speaker impedance measured with an ohm meter gets much below 6 ohms, the radio's output amplifiers may very well heat up and cut in and out or fail completely."
Also
"I would not advise using 4 ohm speakers on the 1998-2005 Harley audio system. 4 ohm speakers work just fine on the 2006 and later HK system"
My question is...can I safely connect 4ohm speakers to a 03-04 HD Radio?
Road Warrior
Joined: Jun 2008
Posts: 1,437
Likes: 80
From: currently an Okie
4 ohm speakers
I wouldn't want to put a 4 ohm resistor in series with a 4 ohm speaker in order to make the 8 ohms needed for your stereo. Half of the audio power will be wasted in heating the resistor. As for the wattage of the resistor, if you have a 40 watt per channel stereo, you would need a 20 watt resistor because half of the power would go to the resistor.