Can't see how an aftermarket audio system would void your warranty. The amps listed here as tried and true don't pull any harder on your charging system than the Boom stuff. Just my 2˘.

2010 Limited with some stuff!!

 

To be honest almost anything. Keep in mind Harley builds motorcycles not audio components. Sure, they use stuff from a company with a recognizable name but rest assured it is not that companies top of line stuff. Harley is also GREAT at marketing. Maybe even better at that than building bikes. They learned a couple of things a long time ago. That enough of their customer base is not well versed in the inner working of motorcycles or their components. And because of this by labeling something Stage 1, 2, 3 etc. those people will throw money at them just so they can say they have it...thinking it's the best stuff.

Some better options would be:
Anything by Biketronics. Also pricey but lifetime warranty and real world tested and approved by MANY.
Rockford Fosgate amps are good but ask about the different models as some perform considerably better than others. For example the PBR300X2 is a great little amp while the PBR300X4 is under powered for most applications.
The Sound Stream PN4.520D is another highly recommended amp.
For speakers..the Kappas, the Polk MM651's IF you can find an older pair, and the newer Kicker series. Gannicus can give you the exact model I forget if it's the KS or CS series...not enough coffee yet, lol.

Ever wonder why, for the premium price they charge, Harley can't manage to provide any specs on this gear? No speaker wattage, no amp wattage, no nominal RMS specs...nothing. Doing a little leg work here and on the old innerweb you will find that some of it has been tested. And it wasn't spectacular! A 300 watt amp making it roughly 4x75 watts per channel max. RMS is probably in the 40-45 watt range. The speakers are subsequently designed to handle that amount of power, which isn't much. Especially considering the premium price tag. Clear..yes. Full sound and great volume...not so much.

The above listed options would be better for several reasons. Better power handling capabilities, more available power, warranties, for some cost (if that's a factor), sound quality and response across the frequency spectrum.

Better price? Yes, on many if not all. Especially considering that after dropping major coin on the Boom system you're likely to be taking it all out and starting over because you weren't happy with it. Ask dozens of us how we all know. Easier install? This all depends on your abilities but none of them are really very difficult and there are numerous guys here willing to help if you get stuck on something. Better Sound? Yes...on all of them.

My advice, keep looking.

 

Tim,

Mike summed it up well. Where i live no one jumps to the Boom II set up, guys with the Boom audio rip out for audio industry gear. You gotta figure car guys have been doing this for a LONG time, and figured it out. Products are better priced and MUCH better sounding. Easier install, probably not as HD has configured their stuff to be plug and play, but honestly it’s not hard at all.

HB, brought up a good point on factory warranty. I’m sure the MoCo would not hesitate to use any excuse to not honor warranty work....but I also haven’t seen any threads on here with warranty issues either.

Options for you are plenty based on what you want to spend, what are you looking for, do you require FM reception, etc.

 

I have a 2012 CVO SG that had boom. I have replaced the head unit, uppers and lowers, and put in a sound stream amp. I can tell you for sure the quality and volume is so much better now, it's not even funny. With the Boom, I had to turn bass and treble almost all the way down to run anywhere abot 50% volume, and even then it sounded like crap.

 

Guys, that Stage II must really be good stuff. 1 Pair of 5x7's with Grills cost $500.00. LOL

 

With or without install? lol

 

That's just parts.

 

To me the Boom II is expensive and unproven as its so new to the market. Seems like a lot of money to throw at a system that you won't be able to read any reviews about before buying and installing. Most of the systems we rave about and recommend on here have been put through the ringer by members so that others in the market for better audio don't have to do as much trial and error.

Since you don't see many replies about the boom II's here I would think it would be because they are new and no one has tried them, if your dead set on getting them you might be at the mercy or your dealer as to what you will need to complete your install?

 

Yeah I know. I was just being sarcastic. That's the whole issue for me with the BOOM stuff. Not good quality and Harley charges the customer an arm and a leg for that junk. It's horrible!

 

I'm no Harley fanboy, but I don't understand how you guys are putting down a system you haven't heard yet (the new Stage II system). It's only been available for a couple of weeks and has only been offered on one low production factory bike (CVO Street Glide). I DO get why so many are pumping up the Biketronics stuff....they seem to have proven components that many think are top notch. Personally, I'd love to hear how their 4180 amp and top of the line speakers compare to the new Boom Stage II stuff. I'm thinking I won't get the opportunity to hear a true comparison until I make it to one of the big rally's later this year.

Someone earlier said the Harley stuff has been tested and proven to be sub-par. I've searched high and low, but can't seem to find this info anywhere. The current Boom amp is 75watts x 4 channels RMS. I have no idea what the max output is (doesn't really matter), but they do list the RMS power. They also list it as having .01 THD. That's pretty good by anyone's standard.

My only experience with Boom is with the stuff my CVO came with. The 2012 system had 160 watts (not sure if that was max or RMS). The 2014 and newer system has 300 watts RMS at .01 THD. It plays decently loud and is crystal clear even at full volume. I was satisfied enough with the Boom stuff that I decided to give the Stage II system a try. I like that everything is plug and play and doesn't require any real modifications. That said, I'm definitely taking a gamble that I'm not going to be pissed of when I hear a Biketronics or similar system down the road.