When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
UltraNutz,
I am looking to upgrade my 2012 SG sound system. I want to stick with the stock radio, but want to add an amp and change out the speakers. I was first looking at the J&m system but after reading some of your post about the soundstream pn4520d and the polk mm651's I feel this is the route I want to go. I have looked up the polk speakers and there seems to be a few different ones to choose from. Can you tell me the exact part# you recommend? By the way at this time I just want to run with the fairing speakers.
Thanks for your time.
dive60
IMHO, it is overkill to use the SS 4.520 on a two speaker only setup. If you don't plan on using the other 2 channels for lower speakers or saddlebag speakers, I would recommend the pbr300x2 from Rockford Fosgate.
Last edited by Pioneer74; Mar 20, 2013 at 09:38 PM.
No sir actually you're doing it correctly. Speakers should be changed first to see if that's all you need, then amp, then head unit in stages as you described.
If you're going to do rear speaker lids, I wouldn't bridge the amp to the fronts to save yourself the trouble of rewiring it when you do add the lids.
Simply run the Titan IIs off the front channel of the amp, and connect your rear speaker wires so you don't have to pull your fairing apart again. Then when you get the rears in, connect your wires and off you go.
I appreciate that ultra think i got it all situated now and I fixin to pull the trigger
To, Oldhippie, GlacierPearl, MotoMike, Harley Ping Man, Pioneer74, UltraNutz thank you all for hanging in there with me on this I appreciate your input and advice on all this information hopefully in next couple weeks ill have all my stuff here and get it in.
Again thank you for all this as I know you have answered these same questions many times.
If I can figure out how to add pics after I get it all in I will post them up.
IMHO, it is overkill to use the SS 4.520 on a two speaker only setup. If you don't plan on using the other 2 channels for lower speakers or saddlebag speakers, I would recommend the pbr300x2 from Rockford Fosgate.
certainly a good amp Pioneer74 but I still recommend the PN4.520D in bridged mode over the RF amp. The trick is matching that bridged mode to a good pair of speakers. Initially I was recommending the Polk DB series speakers for a setup like this but soon realized, even with gains turned down, they simply can't handle the power. The Titan II, Hertz, and Focal can though.
More power which means cleaner output at lower and higher volumes
Less expensive
Class D which means it won't run hot, hell I've got my rear channels running at a 1.3 ohm load and that amp never gets hot
Class D also means it won't kill your charging system. Outputs is what draws power from your electrical system it's not the power supply of the amp like most think it is and being Class D means switching outputs and little current draw
UltraNutz,
I am looking to upgrade my 2012 SG sound system. I want to stick with the stock radio, but want to add an amp and change out the speakers. I was first looking at the J&m system but after reading some of your post about the soundstream pn4520d and the polk mm651's I feel this is the route I want to go. I have looked up the polk speakers and there seems to be a few different ones to choose from. Can you tell me the exact part# you recommend? By the way at this time I just want to run with the fairing speakers.
Thanks for your time.
dive60
If you're going to run 2 speaker setup with this amp, I don't suggest using the MM651 series speakers because of the impedance/ohms. Look at the Titan IIs, Hertz HCX165, or Focal speakers which are 4 ohm speakers. This will allow you to bridge the amp for full output power to the two speakers.
I was recommending the pbr amp because of the speaker he chose. They can't handle the full 2 channel bridged power of the SS amp and it's not good on the equipment to only run 2 out of the 4 channels for an extended period of time.
I was recommending the pbr amp because of the speaker he chose. They can't handle the full 2 channel bridged power of the SS amp and it's not good on the equipment to only run 2 out of the 4 channels for an extended period of time.
Well I certainly agree it's a good little amp and I also recommend it too but I usually base that recommendation on what folks are looking for. The DB series speakers unfortunately have disappointed me and others so I won't recommend them any more as you're 100% correct in them not being able to handle the power. The RF 300x2 amp on those speakers will end up with the same results, just can't handle it.
What I don't agree with (at least not 100%) is the last statement in running an amp in bridged mode for an extended period of time not being good for the equipment. There are 2 major things to consider when bridging amps.
Class of amp. A Class A or A/B amp is going to act/perform totally different than a Class D amp because of the way they're designed. and
The impedance load seen at the output stage of the amp.
When thinking about this with a technical mindset; you have 4 channels total, 2 rear and 2 front. The rear has one set of switching output transistors to share between those 2 channels, the front has one set of switching output transistors to share between those 2 channels. By bridging an amp in this configuration (4 channel) you are taking 1 set of speaker outputs from the front, 1 set of speaker outputs from the rear, each still using their own individual switching output transistors and effectively cutting the amount of power/current draw required in half. So in this scenario which is what I've been recommending with bridged mode the statement is not accurate.
When you drop below a 4 ohm load at the amp (bridged) this whole scenario changes and then you are talking about stressing the output transistors for both front and rear outputs regardless of class of amp. In this scenario, your statement would be 100% correct.
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.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
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.
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.