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  #26  
Old 01-24-2006, 07:56 AM
flightparties flightparties is offline
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Hi to all

Iīm also interested in know Isolator schematics for build it myself

any idea of filter types (linkwitz-Riley, Butterworth, bessell....)
I have lotīs of schematics of Eqīs and Crossovers but I canīt understand clearly, design of - infinity to +6 dB like vestax for example

Thanks in advance
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  #27  
Old 01-26-2006, 03:53 AM
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No ideas?
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  #28  
Old 01-27-2006, 06:17 AM
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Finally I used Butterworth in Salley-Key configuration with Rf 11 Penny+Giles Rotary pots

I hope someone can talk about it
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  #29  
Old 01-27-2006, 12:21 PM
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info...

sallen-key

http://www.web-ee.com/primers/files/Sallen_Key.pdf

butterworth

http://sepwww.stanford.edu/ftp/prof/...ml/node14.html
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  #30  
Old 01-27-2006, 06:26 PM
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Thanks Louped garou for the info
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  #31  
Old 01-27-2006, 06:31 PM
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I also think in Linkwitz-Riley for flat respone at xover but with more irregular Butterworth I hope sound could be more NYC style

But more opinions are accepeted of course
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  #32  
Old 01-27-2006, 08:17 PM
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more fun reading....

http://www.trueaudio.com/st_mr2.htm
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  #33  
Old 01-28-2006, 06:22 AM
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More interesting things

Thank you very much
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  #34  
Old 01-28-2006, 08:49 AM
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I am new to this fourm but I am glad to say I am an old school installer. More on that later. I have been working on a prototype isolator just for fun. 3 band.low 20hz to 100hz, mid 100hz to 7000hz, and highs 7000hz and up. Each band will have a switch for a 6db and 12db roll off ith phase allinement on the mid band. All bands will be from 0 to 12db wide open. I will be etching soon.
Remind me to tell you my meeting with Richard. It was trully pivlidge.
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  #35  
Old 01-28-2006, 09:49 AM
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Wink

Thatīs very interesting animal

Thank you to share this info with us, donīt hesitate to continue sharing

Mine design is with 20Hz to 300Hz 300Hz to 4000Hz 4000Hz to 22 KHz

what kind of filters did you use, Linkwitz Riley, Butterworth ?

Thanks to share your old school knowledge
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  #36  
Old 01-28-2006, 10:13 AM
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on the 6db roll off butterworth. On the 12db bessel just to help with the alinement in the mid band. Understand that this is not a eq but a true isolator. It,s been a long time since I've done this. I will share pictures of the past and I can contribute to this board. I've built way to many systems, crossovers, consoles and cabinets.
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  #37  
Old 01-28-2006, 10:34 AM
flightparties flightparties is offline
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I'm wondered and amazing reading your words, Iwould like to see these schematics because I think that I understand it better

Thanks

Do you have msn? or mail?
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  #38  
Old 01-28-2006, 10:49 AM
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if you are handing out schematics....

even though I can't use them now.... I will eventually be able to read and use them....

pretty cool stuff...


abit more on your history when you get a chance, please.... club history is so much more fun than war of 1812 history
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  #39  
Old 01-28-2006, 10:54 AM
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basicly its a three way crossover sumed back int the stero path. This is just for fun and not comercial use. There will be a bypass on it but it will work just like a crossover with the controls for bass, mid, highs. There will be a switch at each control for 6db rolloff and 12 db roll off indepentantly, and a switch on the mids for phase alinement. Should be interesting.
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  #40  
Old 01-28-2006, 10:59 AM
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Thumbs down

I need a new keyboard!!!!!!!!!!!!!! sorry about the spelling.
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  #41  
Old 01-28-2006, 11:05 AM
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Do you have that schematics ?

Seems very interesting
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  #42  
Old 01-28-2006, 11:13 AM
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I'll be glad to share everything I have. I am almost done with the print for etching the board. Let me test it to see how it works. I don't have to much equiptment left, but I can get it going. I will also be willing to pass it around to see what you think. Again this is for fun and not for anything else. This brings back alot of memories for me and I am glad to share.

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  #43  
Old 01-28-2006, 11:18 AM
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Ok Thank you very much!!!
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  #44  
Old 01-28-2006, 12:25 PM
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too cool....

thanks for the pic in the other thread.....

too cool -- love the knowledge sharing....


so a toggle switch that can adjust from butterworth to bessel...

nice....

when you email, please also ship a copy to louped.garou@gmail.com


many thanks
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  #45  
Old 01-28-2006, 01:41 PM
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Yup! you will be able to switch from 6db like the duo to 12 db on the fly indepentently. You will also have phase alinement on the mid band if needed. Thats because of the 12 db slope. Will tend to get out of phase and with the bessel configuration that tends to help also. The duo unit is nice, but at 6db slope will not give you the sound everyone wants. Lets face it some of you want it to perform like the rla cross over with out it being a crossover, some of you don't. Don't for get the crossovers we built were for the dj to control. They used it to control the song and the crowd. Thats the same design therory I am trying to use for this isolator. Get it to act like the crossover. We'll see,
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  #46  
Old 01-28-2006, 10:30 PM
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Quote:
Originally posted by flightparties
Thatīs very interesting animal

Thank you to share this info with us, donīt hesitate to continue sharing

Mine design is with 20Hz to 300Hz 300Hz to 4000Hz 4000Hz to 22 KHz

what kind of filters did you use, Linkwitz Riley, Butterworth ?

Thanks to share your old school knowledge


hi
this design looks like more fun iso effects to me
i think 18db butterworth is too natural for dj isolator effects
butterworth is best for crossover but not for dj isolator
24db or 48db would be more fun for dj use.

How about putting HI pass and low pass filters?
i love playing only bass sound or hi hat soiund during mixing records.

before you design you need to know which type of isolator you want to play!

many people are confusing with crossover, isolator and EQ.

when you finish your prototype.
pleeeease let me drive it!!

peace
taisei

Last edited by Rotarymadness : 01-28-2006 at 10:45 PM.
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  #47  
Old 01-29-2006, 07:37 AM
flightparties flightparties is offline
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Hi

Of course I will let you know my project !!!!

Iīm really confused, because I saw 2 schematics of commercial Isolators and both of them use Linkwitz-Riley so....

Rane and Vestax use Linkwitz Riley Iīm 80% sure
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  #48  
Old 01-29-2006, 09:45 AM
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The reason for useing LR filter with a 24db slope is that it brings everything back in phase at the cross over points. 24db slope is done by 2 12db bessel together. Thats why at the mid band I put a phase aline filter in because at a 12db slope you'll be out of phase. A 6db slope phase is not a factor. This gets kind of fun doesn't it. I think with everybodies ideas going on here we are going to have some fun.

animal
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  #49  
Old 01-29-2006, 02:23 PM
flightparties flightparties is offline
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Yeahhh for sure!!!

I think in the same way, If we share here our knowledge we can do togheter a well job

My deep repect at RLA equipment
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  #50  
Old 01-29-2006, 07:44 PM
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Wow I missed this convo.

What is the slope on the RLA, Duo, other new units..etc..?

I mean yes, 12db and even 24dB just doesnt seem steep enough for an isolator.

I'm dying to see this schematic as well. 24db+ networks get big really fast and I'd also be curious to see how you're doing this. Are you using any IC's or just straight caps and coils? I figured everyone here being the purists, you'd be using caps/coils.

How are you etching? I remembe a few years back I found this place online that had a piece of software you downloaded, you layed out your board, the software uploaded the design automatically and 48 hours later, tada! you had an etched and drilled board at your place, double sided too.

I havent built anything in a long time! Its time to build something and I'm dying for an isolator! (Grunts in Tim Allen home improvement chant..)



Quote:
Originally posted by Rotarymadness
hi
this design looks like more fun iso effects to me
i think 18db butterworth is too natural for dj isolator effects
butterworth is best for crossover but not for dj isolator
24db or 48db would be more fun for dj use.

How about putting HI pass and low pass filters?
i love playing only bass sound or hi hat soiund during mixing records.

before you design you need to know which type of isolator you want to play!

many people are confusing with crossover, isolator and EQ.

when you finish your prototype.
pleeeease let me drive it!!

peace
taisei
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