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#433053 - 08/20/19 11:31 AM Re: LFR1100 Active [Re: Ian]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6280
I think you should get the Laplace transforms of the amp outputs, speaker inputs and cable and do a transient and spectral analysis. If these are not available, just run an impulse response to get the transfer functions. Otherwise, how could you possibly sleep at night?
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5,M3,M50 v4
had v2
Air N2 (someday)

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#433054 - 08/20/19 11:42 AM Re: LFR1100 Active [Re: Ian]
rrlev Offline
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Registered: 09/25/09
Posts: 198
Loc: Boston Area
Mojo,

Peak amperage numbers (and wattage numbers) are fun to throw around and I guess for those of us who like to push our systems to their limits there might be some merit to justify designing to them smile ...

For me, I think I'd be hard pressed to hear the distortion introduced by the speaker wire even if the damping fell well below 50 at some frequencies .... (just run the voltage divider math and convert that to db down and I think you'll see what I mean).

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#433055 - 08/20/19 11:50 AM Re: LFR1100 Active [Re: Mojo]
rrlev Offline
veteran

Registered: 09/25/09
Posts: 198
Loc: Boston Area
Originally Posted By Mojo
I think you should get the Laplace transforms of the amp outputs, speaker inputs and cable and do a transient and spectral analysis. If these are not available, just run an impulse response to get the transfer functions. Otherwise, how could you possibly sleep at night?
Mojo you have the gift of gobbledygook. A double speak man extraordinaire.

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#433057 - 08/20/19 12:18 PM Re: LFR1100 Active [Re: Ian]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6280
I am working on software right now that does what I described above. Not for audio gear though.
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5,M3,M50 v4
had v2
Air N2 (someday)

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#433058 - 08/20/19 02:09 PM Re: LFR1100 Active [Re: Ian]
rrlev Offline
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Registered: 09/25/09
Posts: 198
Loc: Boston Area
Mojo, I'm just having fun with you having fun ... My hat is off to you ... it's definitely first rate high class gobbledygook ...

Think gobbledygook is defined something like ... "sound like official tech speak without any real content" (although knowing you're working on something real gives us some context).

The problem with all that fun is that it could shut down people if they don't know you're having fun. Also sometimes the thread topic gets lost if there is too much of it. (but the latter seems to happen around here anyway ... gobbledygook or not smile )

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#433061 - 08/20/19 03:48 PM Re: LFR1100 Active [Re: Ian]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6280
All that stuff I said up above is real math. Axiom uses some of it in their DSPs. Sometimes I make up stuff to keep Alan Lofft on his toes.

You are correct that if these boards are to be used for knowledge only, I've been grossly negligent. I learned from the best like MarkSJohnson, pmbuko, Ken.C, medic8r and others.

Back to the topic at hand...impedance...which incidentally can be calculated by the FFT of the impulse response. laugh
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5,M3,M50 v4
had v2
Air N2 (someday)

Top
#433062 - 08/20/19 06:47 PM Re: LFR1100 Active [Re: Ian]
rrlev Offline
veteran

Registered: 09/25/09
Posts: 198
Loc: Boston Area
Mojo I believe you. And I believe everything you said about your programming project. All I was sayin, was when you take meaningful words from one context (in this case your project) and stick them some place else (like this thread) without setting context then you get gobbledygook....

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#433063 - 08/20/19 07:42 PM Re: LFR1100 Active [Re: Ian]
Mojo Online   content
axiomite

Registered: 01/21/07
Posts: 6280
All that stuff I said is real and you can do it on your audio equipment. It just sounds like gobbledygook...LOL! My project has 83 people working on that gobbledygook alone. I wish it was audio; it would be far easier.
_________________________
A-LFR/1000-8/500v4x2 coming
1000-2,3,1500-3
100,160,QS10x2,800,M5,M3,M50 v4
had v2
Air N2 (someday)

Top
#433064 - 08/20/19 08:30 PM Re: LFR1100 Active [Re: Ian]
craigsub Offline
connoisseur

Registered: 12/15/03
Posts: 1810
Originally Posted By Ian
We have posted the correct Frequency Graph in the Specifications section of the product page for the LFR1100 Active now. Just need to do the Impedance Graph so it shows all five driver sections.


These speakers may just make winter tolerable.
_________________________
LFR1100 actv, LFR1100, M100, M50, VP180HP, VP150, 3xEP800, M3, EP350, ADA1000-5, ADA1500-4 + 1500-6

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#433065 - 08/20/19 08:33 PM Re: LFR1100 Active [Re: Mojo]
craigsub Offline
connoisseur

Registered: 12/15/03
Posts: 1810
Originally Posted By Mojo
Hot damn. Those curves signify awesomeness! Craig, you're one fortunate dude.


Life is good. The Magico dealer who tossed me out for challenging him to a double blind test between his $250,000 Magico/McIntosh system to my $15,000 LFR-1100 based system will probably not even let me in the store.

And I was REALLY nice, too!
_________________________
LFR1100 actv, LFR1100, M100, M50, VP180HP, VP150, 3xEP800, M3, EP350, ADA1000-5, ADA1500-4 + 1500-6

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