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Re: LFR1100 Active
Ian #431685 04/01/19 06:50 PM
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Think you'll have to come out with a 10 channel amp to go with.

Or perhaps put the active crossover in a 5 channel amp ... that way one can get each closer to the speaker ... or just put the whole thing in the speaker. Unless you need both channels to process the LFR signal ... (which I'm thinking might be a real possibility)

Last edited by rrlev; 04/01/19 07:01 PM. Reason: more on the thought
Re: LFR1100 Active
Ian #431686 04/02/19 12:45 AM
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Ian, how is the directivity on those active LFRs? Are you able to get the listening window and sound power curves to pretty much lie on top of each other?


A-LFR/1000-8 & 2/500v4x2
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100,160,QS10x2,800,M5x2,M2/3/50v4
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had v2
Re: LFR1100 Active
rrlev #431689 04/02/19 07:24 AM
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Ian Offline OP
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Hi rrlev,

An ADA1500-5 per speaker would work really well. Since there is one DSP per speaker the amp/DSP combo can be over by each speaker. I did think about putting the DSP and an ADA1500-5 in the speaker. It would save a lot of wiring as you would just need to plug each speaker into the wall. Our 4in1 Transmitter/pre-amp/AxiomAir could send the information to each speaker wirelessly.



But the speaker would have to get quite a bit taller to house all this amplification and the DSP. As it is you could still use the 4in1 Transmitter/pre-amp/AxiomAir and have the receiver mounted in the DSP for each speaker so the wiring would be minimal, just 5 short speaker wires if the amp is near the speaker and the interconnects from the DSP to the amp.


Ian Colquhoun
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Re: LFR1100 Active
Mojo #431690 04/02/19 07:43 AM
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Hi Mojo,

Yes we are. It is pretty cool to have this much control in the design phase. The flip side is the mathematical nightmare of all those curves coming together. You have five distinct radiating patterns to work with to give you the final result at each 7.5 degree increment in the Spinorama. Since adjusting one affects all the others you can kind of get the picture.


Ian Colquhoun
President & Chief Engineer
Re: LFR1100 Active
Ian #431692 04/02/19 02:39 PM
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Originally Posted By Ian
Hi Mojo,

Yes we are. It is pretty cool to have this much control in the design phase.


Then we're all in big trouble. We all need to upgrade to LFR actives.

Originally Posted By Ian
The flip side is the mathematical nightmare of all those curves coming together. You have five distinct radiating patterns to work with to give you the final result at each 7.5 degree increment in the Spinorama. Since adjusting one affects all the others you can kind of get the picture.


Yes, that's why we need one driver to rule them all. But it's so much fun to play God with speaker systems. smile

Re: LFR1100 Active
Ian #431694 04/02/19 07:54 PM
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So if I popped my head in next Thursday, could I see a working demonstration? Just Wondering??


Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A
Re: LFR1100 Active
MatManhasgone #431701 04/04/19 06:14 AM
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Ian Offline OP
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Hi Matt,

A week or two later would be better if you can swing it. Right now everything is at my place.


Ian Colquhoun
President & Chief Engineer
Re: LFR1100 Active
Ian #431707 04/04/19 04:35 PM
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Win win




Re: LFR1100 Active
Ian #431708 04/04/19 05:11 PM
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Mat, what Ian isn't telling you is that he blew the sh!t out of the test gear Andrew gave him. He hooked up 5 ADA-1500s to each LFR. When that "worked", he jumpered the ADAs for bridged mono mode and launched the HP drivers across the room with smoke trails and tendrils of voice coil trailing behind them. At least that's how the dream I had last night went.


A-LFR/1000-8 & 2/500v4x2
1000-3,1500-3
100,160,QS10x2,800,M5x2,M2/3/50v4
Air Force, Freedom
had v2
Re: LFR1100 Active
Ian #431736 04/07/19 07:54 PM
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Lol




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