Axiom Home Page Forums General Discussion What's New At Axiom LFR1100 Active

I was thinking that both DSPs and Amp would be in the same box ... save on power supplies, cases and maybe DSPs ... although If you split them into two boxes then then we are talking about a 500W supply for each ... which could be a savings (Since I don't have any $ numbers I can't really say).

Putting them in the speaker works but in both cases ...

There is an advantage to a separate amp ... you can upgrade the amp without trading in the whole system. Also you get to use the 10 channel amp for something else if and when your upgrade/sell/trade in/retire the LFRs. It's gonna come in handy for that 11.4.14 channel surround system we are all going to have in a few years ...

Agreed. A lot of pros and cons. We need software-defined audio hardware.

One more thought on this. ... a “you have clipped” led which latches for a few seconds so you know that your playin’ it too loud ... maybe call it a “you need to upgrade” led

Rich, you can hear the silence when a channel shuts down.

Which channel is that ... there are 5 per speaker ... when the main woofer cuts out and you have a funny sounding speaker .... not so sure your gonna say...oh, I’m clipping? Maybe if one amp clips all 5 should shut down

Think most people would appreciate knowing they are asking too much of their equipment then to start worrying about what happened and is there something wrong with it (that’s how returns happen when nothing is wrong with the product)

You know which channel is clipping. It's the one that supplies the woofer. It's always the woofer because the HP woofer is a fat, greedy, little swine. That woofer array is 3 Ohms and gobbles 750W.

By the way, that's 750W average. 3000W dynamic.

Mojo, you're a knowledgable user ... a lot of people would suspect the speaker was bad.
A little bitty led might give them a clue as to what happened ...
(and it just a little logic off a couple of lines from the chip.)

Here's the thing, Rich. It may be possible to easily drive LEDs if there are any outputs left but that doesn't mean just because one can it should be done.

For a 1000-8, it's 8 drive lines (2 from each double-sided amp board), a common, 8 holes in the faceplate, more work for Andrew that takes him away from more important stuff, more work for manufacturing and more work for production testing. And it's not just 8 LEDs and their biasing resistors. It's also an MOV and cap to ground for each LED for static discharge protection because you know someone is gonna rub their socked feet on the carpet and discharge at least one of their fat fingers through an LED. You don't want that discharge current flowing back to the amp boards hence the caps and the MOVs will clamp what could be as high as a 5kV discharge to a safe level. On top of all that, that's 9 more wires in a unit that already has too many for my liking. Every wire is a potential radiating or conducting antenna.

I'd say all that would be worth it if it wasn't for the fact that it would only be used once to alert the listener. Once the listener knows about it, it wouldn't be needed again.

Something like this can be covered in the manual. It's very easy to perceive a protected channel even in my 5.1 set-up.

Oh ho ho. Rich is writing his rebuttal.