Axiom Home Page Forums General Discussion Advice from Axiom Owners Power Amplifier Troubleshooting

Haha no. I dont have money to buy them let alone run them properly. The m100 is more of a party speaker/work horse and suits my needs and tastes a little better. Lol

The active lfr is a little too refined for this redneck

Dude, I have a wayyyyyy redder neck than you. Do you have a primitive weapons wall in your living room with edged tools accenting every table surface? I've got a tiger fork, Spetznaz shovel and a samburu spear within reach. How's that for redneck?

So if they're good for me, they're good for you.

It is impossible to not respect Axiom for what it has introduced to the market. The dedication has been nothing short of tremendous.

Haha..well u sold me. If I ever win the lottery a pair of active lfr in piano gloss rosewood are happening

I have a dagger on display, does that count? Lol

Or how about my whiskey dragon bottle holder on my coffee table? :p

I'm sure they are amazing.

But when I enjoy and push my axioms...I'm usually drunk and stoned, teetering the line where I first sense distortion, dialing it back a smidge...and letting it rage through eclectic playlists for hours...on extended stereo. Of course, every song is different so I have to play with the volume accordingly.

I dont see me getting lost in a 3d soundscape in the prime listening position. I want soul crushing output and muscle flex. And I'm sure the lfr can provide that in spades...but for my budget, the m100 seems a better fit


I've had people dancing in my living room to the m80s thumping and people cant believe when I tell them my subwoofers are off. Lol

They pound. And sound fantastic. And that's without external amplification to boot

It will probably move enough ... Plus I'll bet it's connected with spade connectors to the board ... think that thing was designed to be repaired.


PM me with your email and I'll send you the schematic ...

but to answer your question the protection IC is a MPC1237HA ...
Looks like the left front and left surround channels share one side board and the right Front and right surround the other. If either channel on the board has a problem that whole side will cut out and both lights will light. Don't really know much about this chip other then it disconnects the speakers if it detects dc offsets (It also disconnects them to prevent pops on power down) ... so ... if it's not the fuses it could be that the DC bias pots need to be cleaned ... of course you'd have to redo the bias adjustment if you cleaned them. Otherwise ... I'd let a tech look at it.

On the power supply there are 8 80V15000uF caps in there ... since you asked ...

According to Ian and Craig Chase, there really is no prime listening position with LFRs. There is stereo everywhere.

If you like pounding, the active 1100s will play more than 10 dB louder than the M100s; according to specs, they're good to 129 dB at 3 feet away. That basically means if you provided them with the 4400 Watts peak they're good for, at 3 feet away they'd blow off both of your 'nads while they liquified your brain. And they'd do it in 3D.

Haha well I'm definitely sold now

I wonder how much I could sell my son for on the chinese black market? *evil grin,)*

Oh .. if only one fuse is blown on a channel ... the lights will light
if both are blown ... not sure ...

My brain nearly melted as I was using my cellphone to look at the schematic Rich sent me.

There are four fuses in the left channels: 401 and 402 on the front and 501 and 502 on the surround. If any of those blow in any combination, then *both* left channel LEDs (D004 and D005) will come on. Don't ask me why Rotel didn't just use a single LED and call it "left channel protection" or protection chips for each channel (which admittedly would have complicated the design).

Those fuses I referred to above are likely buried as Rich mentioned before.

There could be other circumstances that lead to the LEDs being on besides blown fuses. For example, an internal fault in the protection chip.

Chess, when you plugged it back in, did you cycle the power switch?

BTW, in case it wasn't clear above, the entire left channel (and right channel), use a single protection circuit. So if one channel has been abused, both channels will be pooched.