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Old 06-10-2012, 01:05 PM
Ride Like A PRO Atlanta Ride Like A PRO Atlanta is offline
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Default 2 Ohm or 4 Ohm Speakers

I want to replace the stock speakers on my 08 Ultra Classic. Do I have to stay with the 2 Ohm rating or can I buy a marine grade 4 Ohm speaker?
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Old 06-10-2012, 09:19 PM
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CC Rainman CC Rainman is offline
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You have to stay with a 2 ohm speaker if you are not changing the HK radio or adding a amp. If you add an amp or change the radio out then uyou can run 4 ohm speaker.
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Old 06-11-2012, 05:41 AM
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Quote:
Originally Posted by Ride Like A PRO Atlanta View Post
I want to replace the stock speakers on my 08 Ultra Classic. Do I have to stay with the 2 Ohm rating or can I buy a marine grade 4 Ohm speaker?
2 ohm is ideal. the radio will work fine with 4 ohm, but you will sacrifice just a bit of volume.

If you add an amp, be sure the speaker ohm ratings match the amp. Alot of systems designed as plug and play for the HD run 2 ohm speakers.
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Old 06-11-2012, 08:56 AM
Ride Like A PRO Atlanta Ride Like A PRO Atlanta is offline
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Default Amp

Thanks for the info. I do want to add a AMP. When I look at the J&M amps and speakers as well as others desighed for "motorcycle" or Harley the price is extreme. Just like with anything item for motorcycles, you pay a higher price.

Any suggestions on a quality 4 channel amp for the Ultra?
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Old 06-11-2012, 02:59 PM
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wjl24 wjl24 is offline
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I did the Rockford PBR300X4 as many others have done. Can get it around $150.00 on ebay and Amazon. Very happy with the amp. It does only run 4 ohms. It will overheat running 2 ohms per Rockford tech.
I went with the biketronics 6.5" speakers for the front made by Hybrid Audio Technonlogies. I got a price match from Eastern Performance on them. They wanted $229.00 but match another price quote of $199.00 shipped. PM me if you want more info on that. Those speakers are a little pricey but include the mounting adaptors and have a lifetime warranty. They sound excellent.
I put the DXi650 Polk 6.5" in the rear pods. They are shallow enough to fit without any mods except to drill 4 new mouting holes. No cutting or adaptors needed. They also sound good. I was suprised by the Polks. Also put poly fill in the pods and Dynamat in the fairing.
I bought the mounting bracket from ezzell141@comcast.net which is very nice and allows you to mount the amp on top of radio and moves your CB and/or XM radio modules below the radio.
Good luck with your project.

Last edited by wjl24; 06-11-2012 at 08:29 PM.. Reason: error
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Old 06-11-2012, 08:12 PM
FatTony FatTony is offline
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Ummm, the PBR 300x4 runs at 4 ohms, not 2 ohms. Says so right on on the RF website, I think you got it reversed.

Quote:
Originally Posted by RF website
Number of Channels: 4
Rated Power
(RMS Continuous Power): 75 Watts x 4 @ 4-Ohm
This amplifier is only capable of operation at 4-Ohm
Total Power
(Sum of Rated Power): 300 Watts RMS
Dynamic Power
(PVC/PowerCube® Measurement): 300 Watts x 4 @ 4-Ohms
Bridgeable: No
Efficiency (average):
Crossover Controls: Selectable 80Hz LP/AP/80Hz HP @ 12dB/Octave
Tone Controls:
Signal Input: Hi-Level: Variable DC offset sensitivity
High-Level: harness
Low-Level: 2 Pair RCA
Signal Output:
Power Input Connector: Block harness
Power Wire Gauge: 10 AWG
Speaker Output Connector: Harness
Speaker Wire Gauge: Harness 16 AWG
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Old 06-11-2012, 08:26 PM
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Quote:
Originally Posted by FatTony View Post
Ummm, the PBR 300x4 runs at 4 ohms, not 2 ohms. Says so right on on the RF website, I think you got it reversed.
Wow, I did type 2 ohms, meant 4 ohms. Glad you noticed that. I would have went with the Polk MM651 if it were rated at 2 ohms.
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Old 06-12-2012, 12:04 AM
Calbuzzard67 Calbuzzard67 is offline
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Quote:
Originally Posted by FatTony View Post
Ummm, the PBR 300x4 runs at 4 ohms, not 2 ohms. Says so right on on the RF website, I think you got it reversed.
He had it right. I think you read it wrong
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Old 06-12-2012, 01:35 AM
FatTony FatTony is offline
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The post was edited.


Quote:
Originally Posted by wjl24 View Post
Wow, I did type 2 ohms, meant 4 ohms. Glad you noticed that. I would have went with the Polk MM651 if it were rated at 2 ohms.
Me too, that's why I noticed. Now i'll be going with focal PC 165's most likely.
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Old 06-12-2012, 01:35 AM
 
 
 
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