Previous Thread
Next Thread
Print Thread
Rate Thread
Page 2 of 32 1 2 3 4 31 32
Re: LFR1100 Active
Ian #431685 04/01/19 06:50 PM
Joined: Sep 2009
Posts: 1,943
Likes: 101
connoisseur
Online Content
connoisseur
Joined: Sep 2009
Posts: 1,943
Likes: 101
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
Joined: Jan 2007
Posts: 10,515
Likes: 117
M
shareholder in the making
Offline
shareholder in the making
M
Joined: Jan 2007
Posts: 10,515
Likes: 117
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?


House of the Rising Sone
Out in the mid or far field
Linearity and mid-woofers are over-rated
Re: LFR1100 Active
rrlev #431689 04/02/19 07:24 AM
Joined: Mar 2001
Posts: 1,387
Likes: 8
Ian Offline OP
President
connoisseur
OP Offline
President
connoisseur
Joined: Mar 2001
Posts: 1,387
Likes: 8
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
President & Chief Engineer
Re: LFR1100 Active
Mojo #431690 04/02/19 07:43 AM
Joined: Mar 2001
Posts: 1,387
Likes: 8
Ian Offline OP
President
connoisseur
OP Offline
President
connoisseur
Joined: Mar 2001
Posts: 1,387
Likes: 8
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
Joined: Jan 2007
Posts: 10,515
Likes: 117
M
shareholder in the making
Offline
shareholder in the making
M
Joined: Jan 2007
Posts: 10,515
Likes: 117
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
Joined: May 2014
Posts: 1,172
Likes: 6
M
MMM Offline
connoisseur
Offline
connoisseur
M
Joined: May 2014
Posts: 1,172
Likes: 6
So if I popped my head in next Thursday, could I see a working demonstration? Just Wondering??


Anthem: AVM60, Fosi DAC-Q5
Axiom: ADA1500, LFR1100 Actiive, QS8, EP500, M3, M3comp, M5
Re: LFR1100 Active
MMM #431701 04/04/19 06:14 AM
Joined: Mar 2001
Posts: 1,387
Likes: 8
Ian Offline OP
President
connoisseur
OP Offline
President
connoisseur
Joined: Mar 2001
Posts: 1,387
Likes: 8
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
Joined: Oct 2012
Posts: 2,021
Likes: 1
B
connoisseur
Offline
connoisseur
B
Joined: Oct 2012
Posts: 2,021
Likes: 1
Win win



Re: LFR1100 Active
Ian #431708 04/04/19 05:11 PM
Joined: Jan 2007
Posts: 10,515
Likes: 117
M
shareholder in the making
Offline
shareholder in the making
M
Joined: Jan 2007
Posts: 10,515
Likes: 117
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.


House of the Rising Sone
Out in the mid or far field
Linearity and mid-woofers are over-rated
Re: LFR1100 Active
Ian #431736 04/07/19 07:54 PM
Joined: Oct 2012
Posts: 2,021
Likes: 1
B
connoisseur
Offline
connoisseur
B
Joined: Oct 2012
Posts: 2,021
Likes: 1
Lol



Page 2 of 32 1 2 3 4 31 32

Moderated by  alan, Andrew, Brent, Debbie, Ian, Jc 

Link Copied to Clipboard

Need Help Graphic

Forum Statistics
Forums16
Topics24,993
Posts442,752
Members15,648
Most Online2,699
Aug 8th, 2024
Top Posters
Ken.C 18,044
pmbuko 16,441
SirQuack 13,851
CV 12,077
MarkSJohnson 11,458
Who's Online Now
0 members (), 604 guests, and 1 robot.
Key: Admin, Global Mod, Mod
Newsletter Signup
Powered by UBB.threads™ PHP Forum Software 7.7.4