J&M replacement speakers
Sponsor
Joined: Apr 2007
Posts: 2,581
Likes: 65
From: Tucson AZ
RE: J&M replacement speakers
Guys ,,,,,
you are getting off track again ,,,, and we have all been over this quite a few times and J&M testing speakers with a simple ohm meter is a valid test ,,,,
Now before all the technical folks here jump all over that statement, just buy an inexpensive ohm meter and try it for your self ,,,,
1989-1997 Harley audio systems are designed and spec'd for 4 ohm speakers ,,,,,,,
1998-2005 Harley audio systems are designed and spec'd for 8 ohm speakers ,,,,,
2006-2008 Harley audio systems are designed and spec'd for 2 ohm speakers ,,,,,,
anytime you use a speaker with a LOWER impedance than the system is designed for you CAN run the risk of overheating the amplifiers built into the radio,,,
,,, using a speaker with a HIGHER impedance than what it is spec'd for is fine, won't cause any trouble at all ,,,,, but might not be as loud as a speaker with the correct impedance ,,,,
one of the symptoms of having too low of a speaker impedance for the system, is when it cuts in and out as you ride ,,,,,
as for the impedance of the 5.75 ohm labeled Hog Tunes speakers, actually measuring closer to 3 ohms,,, I was simply making an observation and statement ,,, make out of it what you want to ,,,,,
Happy 2008 to everyone !! ,,,,, JMJOHN ,,, john@jmcorp.com ,,,,,,
you are getting off track again ,,,, and we have all been over this quite a few times and J&M testing speakers with a simple ohm meter is a valid test ,,,,
Now before all the technical folks here jump all over that statement, just buy an inexpensive ohm meter and try it for your self ,,,,
1989-1997 Harley audio systems are designed and spec'd for 4 ohm speakers ,,,,,,,
1998-2005 Harley audio systems are designed and spec'd for 8 ohm speakers ,,,,,
2006-2008 Harley audio systems are designed and spec'd for 2 ohm speakers ,,,,,,
anytime you use a speaker with a LOWER impedance than the system is designed for you CAN run the risk of overheating the amplifiers built into the radio,,,
,,, using a speaker with a HIGHER impedance than what it is spec'd for is fine, won't cause any trouble at all ,,,,, but might not be as loud as a speaker with the correct impedance ,,,,
one of the symptoms of having too low of a speaker impedance for the system, is when it cuts in and out as you ride ,,,,,
as for the impedance of the 5.75 ohm labeled Hog Tunes speakers, actually measuring closer to 3 ohms,,, I was simply making an observation and statement ,,, make out of it what you want to ,,,,,
Happy 2008 to everyone !! ,,,,, JMJOHN ,,, john@jmcorp.com ,,,,,,
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JMJOHN,,,, www.Jmcorp.com ,,,, send email direct to John@Jmcorp.com for your HD-Forums VIP Discount Promo Code.
JMJOHN,,,, www.Jmcorp.com ,,,, send email direct to John@Jmcorp.com for your HD-Forums VIP Discount Promo Code.
Road Captain
Joined: Feb 2007
Posts: 513
Likes: 74
From:
RE: J&M replacement speakers
Apparently you've tested Hogtunes speakers at 3 ohms DC RESISTANCE, not A/C IMPEDANCE. They're different! Run an A/C signal through them at any reasonable music frequency, not a DC signal through them, and your IMPEDANCE will measure higher.
Using an ohm meter is a valid DC resistance test, but you have to know how to interpret the results. Yes, we've gone over this over and over...
What matters most is the impedance an amplifier sees from the speakers at bass frequencies -- say 20-100Hz. That's where an amp has to use a lot of power to push the woofer the farthest and move a lot of air. Too low impedance speakers in this range can cause a lot of power draw from the amp, which can overheat the amp. Midrange and high frequencies don't require much power to reproduce (the speaker cone hardly moves) and impedance at those frequencies doesn't matter at all.
If you'd like to claim an impedance problem with HogTunes speakers, just test and graph the impedance from 20hz - 100hz. If it's too low in that range, there's a problem and you can shout about it all day and I won't complain.
Using an ohm meter is a valid DC resistance test, but you have to know how to interpret the results. Yes, we've gone over this over and over...
What matters most is the impedance an amplifier sees from the speakers at bass frequencies -- say 20-100Hz. That's where an amp has to use a lot of power to push the woofer the farthest and move a lot of air. Too low impedance speakers in this range can cause a lot of power draw from the amp, which can overheat the amp. Midrange and high frequencies don't require much power to reproduce (the speaker cone hardly moves) and impedance at those frequencies doesn't matter at all.
If you'd like to claim an impedance problem with HogTunes speakers, just test and graph the impedance from 20hz - 100hz. If it's too low in that range, there's a problem and you can shout about it all day and I won't complain.
Sponsor
Joined: Apr 2007
Posts: 2,581
Likes: 65
From: Tucson AZ
RE: J&M replacement speakers
Grinner ,,,,,
you actually do make a valid point ,,,,, and I apologize if any of my posts are offensive ,,,,
BUTT ,,,, if you take a DC ohm meter and measure a stock Harley speaker for the 2006-2008 HK system ,,, it will measure 2 ohms, just like it is labeled ,,,,,
if you do the same for a stock Harley speaker from the 1998-2005 systems, it will measure right at about 8 ohms with a DC ohm meter ,,, just like it is labeled ,,,,,
if you take a stock Harley speaker from the 1989-1997 systems ,,, and measure it with a DC ohm meter, it will measure very close to 4 ohms, just like it is labeled ,,,,,,
my horse is dead now, how about yours ?!? ,,,, JMJOHN ,,, john@jmcorp.com ,,,,,,,
you actually do make a valid point ,,,,, and I apologize if any of my posts are offensive ,,,,
BUTT ,,,, if you take a DC ohm meter and measure a stock Harley speaker for the 2006-2008 HK system ,,, it will measure 2 ohms, just like it is labeled ,,,,,
if you do the same for a stock Harley speaker from the 1998-2005 systems, it will measure right at about 8 ohms with a DC ohm meter ,,, just like it is labeled ,,,,,
if you take a stock Harley speaker from the 1989-1997 systems ,,, and measure it with a DC ohm meter, it will measure very close to 4 ohms, just like it is labeled ,,,,,,
my horse is dead now, how about yours ?!? ,,,, JMJOHN ,,, john@jmcorp.com ,,,,,,,
Road Captain
Joined: Feb 2007
Posts: 513
Likes: 74
From:
RE: J&M replacement speakers
Yep, I'm done too. This topic is too complicated for a Harley forum anyway. I've never said anyone shouldn't install your speakers. Apparently they sound good and your service is top-notch. That's what matters. I just don't like putting down a competitor's product that also sounds good and has great service for technical reasons that, in my opinion at least, aren't valid. If the technical reason was more correct, then I'd say it's fine to point it out. Nobody on here has reported reliability problems with Hog Tunes speakers that I'm aware of.
Personally, I'm installing a very expensive Hawg Wired system in my ride. I'm only approaching this impedance issue from a scientific and "truth in advertising" standpoint. I don't care about the companies or products involved because they're not relevant to my situation.
Nice new headset by the way.
Personally, I'm installing a very expensive Hawg Wired system in my ride. I'm only approaching this impedance issue from a scientific and "truth in advertising" standpoint. I don't care about the companies or products involved because they're not relevant to my situation.
Nice new headset by the way.
Seasoned HDF Member
Joined: Apr 2006
Posts: 10,675
Likes: 95
From: Billings,Mt.
RE: J&M replacement speakers
ORIGINAL: Blackisfast
Weird...*this* thread didn't suddenly disappear like the other one.
Weird...*this* thread didn't suddenly disappear like the other one.
I have to add that I like the J&M's in my RG.
Intermediate
Joined: May 2007
Posts: 25
Likes: 0
From:
RE: J&M replacement speakers
Wow,
I only know from my experience from what was installed the speakers in my '03 Ultra. I removed the HT speakers after I was disatisfied with thier sound at higher volumes when the amp trys to increase the sound over the road noise to hear the music.
I do not want to bash anybody's speakers but even if with all the hub-bub said, I am still very satisfied with my Birthday Gift mentioned abovefrom my wife.
By the way, is there any motorcyle shows out there in 2008 close by around New Jersey that will have either J&M, Hogtunes, etc. displayed?
The last couple of years I have seen many more baggers out there than non-baggers and custom bikes. I am surprised thatI do not see anybike audio companies popping up here and there unless you go to the mega-shows which of course are not held in my area.
Tull
I only know from my experience from what was installed the speakers in my '03 Ultra. I removed the HT speakers after I was disatisfied with thier sound at higher volumes when the amp trys to increase the sound over the road noise to hear the music.
I do not want to bash anybody's speakers but even if with all the hub-bub said, I am still very satisfied with my Birthday Gift mentioned abovefrom my wife.
By the way, is there any motorcyle shows out there in 2008 close by around New Jersey that will have either J&M, Hogtunes, etc. displayed?
The last couple of years I have seen many more baggers out there than non-baggers and custom bikes. I am surprised thatI do not see anybike audio companies popping up here and there unless you go to the mega-shows which of course are not held in my area.
Tull
Road Warrior
Joined: May 2008
Posts: 1,287
Likes: 3
From: murfreesboro tn.
RE: J&M replacement speakers
there are other ortions than these 2 overrated speakers!! i use polk momo marine speakers rated at 75 watts with a blaupunkt 107 rms t class amplifier. bought both on ebay for a total cost of 125!!!! they will outperform and out blast any ht ot jand m has to offer. do the research and expand the envelope!
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Cruiser
Joined: Jan 2007
Posts: 179
Likes: 0
From: ankeny iowa
RE: J&M replacement speakers
JMJOHN,
Just a question about downloading CDs toI-tunes. I have tried to figure out how to change the download settings of my CD's. Is this correct?
1. Edit pull down menu
Go to preferences at bottom
2. Go to Advanced tab
3. Choose importing tab
4. On import settings:
Change to WAV Encoder. (I-tunes default is AAC Encoder)
Now, do I just leave settings at automatic or do I need to change them to some custom setting? And, if custom, what would that setting be? There are options for sample rate, sample size, and channels????
Thanks!!
Just a question about downloading CDs toI-tunes. I have tried to figure out how to change the download settings of my CD's. Is this correct?
1. Edit pull down menu
Go to preferences at bottom
2. Go to Advanced tab
3. Choose importing tab
4. On import settings:
Change to WAV Encoder. (I-tunes default is AAC Encoder)
Now, do I just leave settings at automatic or do I need to change them to some custom setting? And, if custom, what would that setting be? There are options for sample rate, sample size, and channels????
Thanks!!
Intermediate
Joined: May 2007
Posts: 25
Likes: 0
From:
RE: J&M replacement speakers
Long term testing...
I've now had my J&M speakers in my HD Ultra for since last July and can't be more happy with them.
I play both MP3, Cd's and downloaded content from my Sirius Portable Model with great fidelity.
Very, very pleased with the J&M product. Very easy to install.
Also love the short whip antennas I bought from J&M too.
I'm planningon having Unique Whips in New Yorkcustom make a sub enclosure where my tour pack is and installone 18" bass speaker with a 500 watt amp!
Just kidding or course but I thought that might get a WTF out of it...
Thanks again John and your excellant products.
Tull
I've now had my J&M speakers in my HD Ultra for since last July and can't be more happy with them.
I play both MP3, Cd's and downloaded content from my Sirius Portable Model with great fidelity.
Very, very pleased with the J&M product. Very easy to install.
Also love the short whip antennas I bought from J&M too.
I'm planningon having Unique Whips in New Yorkcustom make a sub enclosure where my tour pack is and installone 18" bass speaker with a 500 watt amp!
Just kidding or course but I thought that might get a WTF out of it...
Thanks again John and your excellant products.
Tull
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