Question for Monitor 10B upgrade: 2.0 or 2.5 ohms?

Hardrock.ca
Hardrock.ca Posts: 27
edited August 2011 in Vintage Speakers
I saw the parts list is in post

http://www.polkaudio.com/forums/showthread.php?t=117359&highlight=crossover+monitor+10B

2 Mills MRA-12.2.5 ohms
2 Mills MRA-12.2.7 ohms
4 Sonicap 12uF 200VDC
2 Sonicap 34uF 200 VDC
4 Vampire BPHEX binding posts
24ft of Cardas Quad-Eutectis solder

But I only can find a 2.0 ohms on the board and schematic diagram

Anyone can clarify which value should be used, 2.0 or 2.5 ohms
If use 2.5 ohms and why?
Post edited by Hardrock.ca on

Comments

  • heiney9
    heiney9 Posts: 25,165
    edited August 2011
    If your 10's are fused sometimes the resistor value for the tweeter is slightly lower. Otherwise go with either. @ .5 ohms difference it won't matter.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
  • Joe08867
    Joe08867 Posts: 3,919
    edited August 2011
    I believe you use the 2.5ohms if you are removing the polyswitches. I have never upped the ohms on my resistors even when removing poly's so I would go with 2.0 ohms personally.
  • Hardrock.ca
    Hardrock.ca Posts: 27
    edited August 2011
    Thank you all, heiney9 and Joe08867!

    heiney9 wrote: »
    If your 10's are fused sometimes the resistor value for the tweeter is slightly lower. Otherwise go with either. @ .5 ohms difference it won't matter.

    H9

    heiney9: Just want double check with you : the high value of that resistor(2.5 ohms) will give me a little more treble?
  • Hardrock.ca
    Hardrock.ca Posts: 27
    edited August 2011
    I have ordered 2.0 , 2.5 and 3.0 ohms for test :)
  • heiney9
    heiney9 Posts: 25,165
    edited August 2011
    Thank you all, heiney9 and Joe08867!




    heiney9: Just want double check with you : the high value of that resistor(2.5 ohms) will give me a little more treble?

    The higher value will sightly pad the tweeter circuit as in give you a bit less treble.
    I have ordered 2.0 , 2.5 and 3.0 ohms for test :)

    There ya go, that's the best way to do it. The differences will be subtle but pick the one you like best. No harm in trying them all.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!