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Rockford Fosgate Amp / Rokker XT Series Speakers
Hey gang. For one of my winter projects I am adding an amp to the bike.
I put J&M Rokker XT Series speakers in the fairing a few years ago (part number 40-453). I just purchased the ROCKFORD FOSGATE PBR300X4 4-CHANNEL AMPLIFIER 300W RMS and the install kit. I noticed in another forum today that this amp is spec'd for 4 ohm set up and the Rokkers are 2 Ohm. Am I screwed? Is there a way to use these together? I also have two Boom speakers on my quick release tour pak with quick connect. If I can use the amp with the Rokkers should I set up the amp for 4 speakers or just use it as 2 channel on the fairing speakers? Thanks in advance for your help.
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#2
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Rockford Fosgate Amp / Rokker XT Series Speakers
Running 2 ohm speakers with a 4 ohm amp runs the risk of damaging the amp. Technically you could run front and back in series turning them into 4 ohm but that would be a pain and the rokkers prolly wouldn’t sound very good. J&M build their stuff so it doesn’t play well with others.
If you want to keep those particular speakers you’re better off with a J&M amp. Or there are tons of good and not too expensive speaker options that pair well with the RF amp. Sent from my iPhone using Tapatalk
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gaZinTa OF THE YEAR 2007 gaZinTa OF THE YEAR 2015 Last edited by BigTOE; 12-09-2017 at 04:57 PM. |
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Just noticed you said the rear are boom and not another set of rokkers. Pretty sure they are 4 ohm so previous option won’t work. I’d buy 4 matched speakers to go with the new amp.
Sent from my iPhone using Tapatalk
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gaZinTa OF THE YEAR 2007 gaZinTa OF THE YEAR 2015 |
#4
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You can fool around with adding inline resistors but Toe has the best idea.
Find a set of speakers that are matched to the amp. You'll be better off in the long run.
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April 13, 2016 -- The day Richard was speechless. May your hands always be busy, May your feet always be swift. May you have a strong foundation When the winds of changes shift. May your heart always be joyful, and may your song always be sung, May you stay forever young! --Bob Dylan |
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The suggestion to have all the components match is a good one. I have a J&M set up for my Street Glide that I'm getting ready to pull out. So far I've blown up two sets of J&M Speakers. One set of 7 1/4 and a set of 7 1/4 Rokkers. I'm using the J&M amp as set from them and everything is matched in terms of impedance. I don't listen to the thing at overly high volume yet their stuff isn't holding up well. My winter project is to pull the amp and Rokkers and send them back to J&M for warranty and install a set of Boom Audio speakers and no amp. Tired of blowing speakers.
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2010 FLHX, Stage II 103, 92 hp 106 tq 06 Street Bob, SE 120R Latus tuned, 139.92 HP and 133.70 TQ 1976 FXE, just needed a shovel in the mix |
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Thanks BT, Inspector and Dinero!
I guess I'll pull the Rokkers and put in some 4 ohm speakers. Can you guys recommend speaker? I only see Kickers and Polk. Are there HD Booms! in 4 ohm for the fairing? Are they any good?
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Quote:
I prefer the Polks but speakers are pretty subjective. Not a fan of the boom at all. Biketronics is always a good source as well. Give them a call and see what they recommend. Sent from my iPhone using Tapatalk
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gaZinTa OF THE YEAR 2007 gaZinTa OF THE YEAR 2015 |
#8
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Biketronics amp and biketronics titan II speakers here. Hard to beat their quality and customer service.
Lifetime warranty too. |
#9
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Okay. I ordered two Polk 4 ohm speakers and will install them and the amp this weekend.
One other question: I have the two speakers on the tour pak that is a quik disconnect tour pak with a quick disconnect speaker wire connector coming from the head unit going to the tour pak speakers. Is it okay to set the RF amplifier up as 4 channel even though the tour pak speakers will sometimes not be connected? Should I just set the amp (Rockford Fosgate PBR300x4) switch to 2 instead of 4 and just run the fairing speakers off the amp?
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#10
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Either way will work but it seems to me that you may give up a little sound quality set up as 2 speaker only when the tour pack is connected and set up as a 4 speaker when it is disconnected.
At my age, either probably pays a whole lot better than I can hear so it may not matter. I think you are just going to have to try the various combinations to see if they matter to you.
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April 13, 2016 -- The day Richard was speechless. May your hands always be busy, May your feet always be swift. May you have a strong foundation When the winds of changes shift. May your heart always be joyful, and may your song always be sung, May you stay forever young! --Bob Dylan |
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Well, I installed the Punch 4 channel amp and put Polk DB651 (6.5") on the front and DB522 (5.25") on the tour pak. I set the amp per instructions. The rear speakers sound amazing with a lot of volume and great sound. The fairing speaker volume is kind of weak and the sound quality, not so great.
I would think the DB651's would better. Any ideas on what might be causing this/how to get the fairing speakers to sound as good as the rear in volume and sound quality? Oh, Happy New Year fellow Doofs!!!!!
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#12
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Is there a fader control not adjusted correctly?
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Kimber |
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