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AUDIX 35102 schematics
Old 3rd August 2005
  #1
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tonymite's Avatar
 

AUDIX 35102 schematics

I am after schematic for AUDIX 35102 module. S.O.S

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Old 4th August 2005
  #2
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I have a set (2 pages) that are HUGE 24 x 36 inch "blueprint" pages. No way will I even think about scanning them on my little HP unit.

Ping me off list and let's see what we can get going for you....

Bri
Old 8th August 2005
  #3
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anyone got the inductor values ???
Old 14th August 2005
  #4
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Hi there
Since you know the capacitance involved with each frequency you can work out the required inductance. Get your calculator out. Since some inductor taps have 2 caps (different frequencies) you get an automatic calculation check if the numbers come out right.
The frequencies were pretty close to required values, I tested a couple of hundred of these units in the early '80's.
Matt S
PS the inductor values were not on any of the diagrams.
Early versions of modules had lots of skinny wires version 2 had PCB mount switches but the circuit was the same.
Old 14th August 2005
  #5
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The inductors for the LF EQ will be tricky to figure out since the circuit appears to be shelving, with no associated "resonance" capacitors.

Bri
Old 14th August 2005
  #6
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OK I will measure one someday but it may not be soon
Matt
Old 14th August 2005
  #7
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OK curiosity got the better of me!
16 ohms DC, 194 millihenries
22.6 ohms, 357mH
30.7, 648mH
41, 1122mH
65, 1946mH
This was in circuit and varying the pot and switch had some effect but you should be able to calculate what is required from the amount of boost required, the value of the pot and so on. I can't do the maths myself but leave it open to others who can.
Happy hunting
Matt S
Old 15th August 2005
  #8
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Matt...was that for the LF EQ inductor?

Values for the MF inductor would be useful as well since the series resistances will impact the "Q" of the filter.

Bri
Old 15th August 2005
  #9
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Yes LF values given. I will try to measure Dc resistance of the others tomorrow. The modules aren't mine so I don't want to pull them apart unnecessarily.
Matt
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