Axiom Home Page Forums General Discussion Stereo LFR1100 actives

Yes, Steve, it is a great tune. A song of its age, a different time.

that's up in the loud rock concert territory ...

Note: common opinion is that prolonged exposure to sounds over 85db can cause hearing loss. Where prolonged means >8hour a day. The louder something is the shorter the exposure needed to make it permanent. charts give 110db for 2min before loss can occur. Just an FYI for those who like to continue their listening enjoyment for years to come.

That said ... hitting 120db for a second or two of dynamics is acceptable in my book ... but you wouldn't want to go much higher or longer ...

Keep in mind my SPL meter likely is not sampling the true peak.

For those who've gotten the Actives, do you have dedicated circuits going to the different amps powering them?

I currently have three dedicated circuits in my HT equipment closet, one feeding the networking and PC devices, another feeding my AV receiver, game consoles, UHD Blu-ray player, streaming devices, and Buttkicker amp, with the final one covering the two Axiom amps I currently have, an ADA1500-4 and ADA1000-4. With the new Actives, I'll be getting two more ADA1500-5s. They won't be residing in the closet since 1) I don't have enough space left to accommodate 2 more amps and DSPs, and 2) the cabling will be easier to do closer to the speakers. However, this means the amps won't be on dedicated circuits, and if I plug in to the nearest receptacles, they'll be on the same circuit as both EP800s. Running dedicated circuits all the way down will be a real chore at this point, but I think it would be easy enough to get them within range of then running power strips to where they are.

What have you done in your setups?

I am running the following from a single 15A, 120V circuit with multiple outlets in my 4200 cu. ft. room. I've monitored for sags at sound levels which are absolutely intolerable and there are none. How can this be possible? Music is dynamic, the dynamics are partially powered from half a Farad of capacitance and the Axiom amps get more efficient with higher demand:

- 55" TV
- Playstation
- Cable modem
- Wireless router
- Firestick
- Onkyo receiver
- active LFR1100 powered by 1000-8, 1500-3 (includes DSPs)
- 160 fed by one channel of the 1500-3
- QS10×2 fed by 1000-2
- 500x2
- 800

Whoa. And here I was worried about only having dual 20A circuits to power my ADA1000's, Anthem 720, and UHD player.

Your 1000 is barely working in your room. It's mostly heating your room rather than powering your speakers.

Good to know, Mojo. I was hoping you'd be able to tell me the capacitance for dynamics made it a non-factor. I'll still keep them off the circuit the EP800s are on, but I won't feel pressed to add more dedicated circuits. Hopefully no ground loop issues arise.

If anything, you're more likely to experience ground loops by adding circuits.

I can tell you the SPL in my 4200 cu.ft. room becomes unbearable very quickly. This isn't just the result of the actives. The triple sealed subs in the room pressurize it to uncomfortable levels even at low volumes. It would be even worse if the room was sealed. This is a relatively new experience for me as of a couple of weeks ago when I managed to sync all my subs and the mains. I am finding I'm listening to music and movies at around -25 to -30 from 15 feet away. With the M100 and single 800, I was listening at about -15 to -20 and with the M5s at -5 to -10. I have a ridiculous amount of headroom that if ever fully utilized, would surely send me to emergency.