Advice for Linkwitz Orion system with Nelson Pass-style pre-amp and amp - Page 12 - diyAudio
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Old 26th November 2007, 09:17 PM   #111
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Quote:
Originally posted by Tazzz
Why not incorporate coils aswell?

http://www.steinmusic.de/audiofino/bauteile-spulen.html

Or would perhaps trading opamps for ferrite in the signal path be a bad swap.
I used coils to make LC notch filters for the electronics on my
full range w/ woofer systems. Simple and nice replacement
for equivalent op amp circuit. They have some nice 100 mH
type parts in the Digikey catalog.

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Old 27th November 2007, 03:17 AM   #112
DougL is offline DougL  United States
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I for one would find the process very educational.

Several things are very clear to me.

Any acceptable design would be plug compatible to the ASP.

Second, I started audio in the 741 eara, so my intuition is that a simpler, discreet implimentation would be both estetically and sonicly superior. YMMV

My goals are first to learn, second great sound.
I have a 3 way OB on a DCX, and would very much like to have an option to migrate to a analog active crossover.


Thanks in advance.

Doug
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Old 20th December 2012, 06:31 AM   #113
fbee is offline fbee  Germany
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Default F5

....now end of 2012 . LX521 follows Orion.

I wonder if F5 (turbo? v1,2,3?) would be a good match for the new LX521. (Gain of F5 is only 15db iso the recommended 26db)
Maybe the woofer channel could be done with hypex modules (more power reserves) and mid/tweet with F5?
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Old 21st December 2012, 01:55 AM   #114
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For my bi-amped system, I use a BOSOZ which drives a line level analog crossover consisting of coils and capacitors..the crossover terminates into Aleph J's...

This all replaced an active Marchand crossover which was heavy on Op Amps.

I much prefer the sound of the simple coil and capacitor filters. As diyers, we can do this because we know what the impedences of the stages before and after the filter.

The BOSOZ is very cool in this application because the BOSOZ lets you adjust the gain of the high and low channels without changing the output impedence of the preamp channels. (the analog filters would be affected if the output impendance of the BOSOZ changed as you adjust levels) So you can change levels of the high channel and low channel to suit your taste.

The sound is simply natural and exquisite.
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Old 21st December 2012, 09:39 AM   #115
fbee is offline fbee  Germany
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Interesting...
but for the time beeing, I' m only looking for a suitable amp
F5? F6? ....????
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Old 21st December 2012, 11:41 AM   #116
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fbee:

SL if clear on amplification. He recommends power levels, that amplifiers all have same gain; and logical extension is that all amplifiers have identical response, easiest when amplifiers are identical.
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Old 21st December 2012, 11:53 AM   #117
fbee is offline fbee  Germany
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so maybe a 8ch F5 ?
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Old 21st December 2012, 11:54 AM   #118
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Quote:
Originally Posted by Barleywater View Post
fbee:

SL if clear on amplification. He recommends power levels, that amplifiers all have same gain; and logical extension is that all amplifiers have identical response, easiest when amplifiers are identical.
Surely amplifiers of different power amplifier gains could be used rather than using the atten/gain stages of the ASP - http://www.linkwitzlab.com/images/gr...asp-blocks.gif
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Old 21st December 2012, 12:07 PM   #119
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Quote:
Originally Posted by hochopeper View Post
Surely amplifiers of different power amplifier gains could be used rather than using the atten/gain stages of the ASP - http://www.linkwitzlab.com/images/gr...asp-blocks.gif
Yes, but assuming plug and play of speaker system without measurement/adjustments requires matched gain.
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Old 21st December 2012, 12:21 PM   #120
fbee is offline fbee  Germany
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assuming 8ch F5 could be built with
F5 v3 for the woofer channels
and F5 v1 for the mids/tweeters?
Same gain for v1/v3
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