443 of 499 people found the following review helpful
Optimistic power claims,
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This review is from: Boss Audio R1100M - 1100 Watt, Monoblock, Class A/B, MOSFET Amplifier With Remote Subwoofer Level Control (Electronics)
I'm an electronics engineer so I care about specifications. This amplifier is a low cost item which offers reasonable value, but I wish they would be more honest with their claims.
My measurements show 21.5V rms continuous into 4 ohms at the onset of clipping with a 14.12V supply. This is 115W rms.
With no load it gives 23.9V with 14.12V supply. This corresponds to 142W rms peak.
So, essentially it is a 100-150W amp (4 ohms), or at best 200-300W (probably less) into 2 ohms. The claims of 250W into 4 ohms or 1100W into 2 ohms are at best ridiculously optimistic.
I would suggest that it is worth paying a bit more to get something better.
Tracked by 4 customers
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Showing 1-10 of 23 posts in this discussion
Initial post: Dec 12, 2012 6:21:50 PM PST
E. Boss says:
I agree with you about the specs. There are two kinds of amps in this world. Crap and good. There is nothing in between. With that said, Amazon is selling this amp for $39.99 today. That's a good deal for a clean 115w into a sub.
Posted on Mar 6, 2013 9:50:38 AM PST
David S. Jannke says:
Thank you for doing and posting the measurement. Honest measures seem nearly impossible to get for amplifiers and the numbers are almost perfect for the appication I have - which in real terms is just an unclipped honest reliable 40 watts or so. For that I need to buy an amp with a listed rating of 1100 watts. Sigh.
In reply to an earlier post on Jun 8, 2013 10:46:34 PM PDT
Randall Benoit says:
Posted on Jun 14, 2013 1:53:59 AM PDT
Amazon Customer says:
I agree. This thing is not what it claims to be. It can't even push my 300 watt sub. I'm pissed!
In reply to an earlier post on Jun 27, 2013 10:45:17 AM PDT
Some Human says:
In order to differentiate themselves, the various "better" mainstream amplifier brands and the Consumer Electronics Association established a standard of ratings and measurements to provide buyers with honest numbers. The name of that standard is "CEA-2006" and if you look for an amplifier with those ratings, they're honest ratings. Unfortunately the same amplifier that gives an honest CEA-2006 rating might also have a bogus peak number elsewhere on the box..
In reply to an earlier post on Sep 18, 2013 7:50:09 PM PDT
P. Gillis says:
I just purchased a Niles Speaker Selection System (SSVC-2). I need to get a least a 100watt 8 ohm amp. What would you suggest? Would this one be sufficient for the Niles?
Posted on Nov 12, 2013 5:14:44 PM PST
Is this an unclipped 100 watts at 4 ohms ?
Posted on Feb 3, 2014 9:38:14 PM PST
PK PDX says:
Where are your current measurements? How are you calculating POWER w/o current?? If you're an engineer you know P=IV [power = current x voltage]
In reply to an earlier post on Apr 17, 2014 7:30:01 PM PDT
Not to be rude, but if you substitute V/R for I in the formula P=IV you get P=V^2/R.
Posted on May 17, 2014 6:23:36 PM PDT
Patrick Blankenship says:
Seems like there are a lot of knowledgable people on this thread, so I was hoping I might get an opinion regarding a good speaker/box match for this amp. I was thinking about this Rockford Fosgate double 10 box:
Rockford Fosgate Prime R1L-2X10 Double R1 10-Inch Preloaded Enclosure
Says it is bridged for 300 watts rms at 2 ohms-- would this boss amp drive it okay?
Thanks for any help with this!