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2.6R crossover - expected vs actual

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Can anyone comment on this picture of my 2.6R crossover? Here is the reference schematic:

http://www.integracoustics.com/MUG/MUG/tweaks/mg2.6xo.gif

above is a picture of the actual XO, built in Jan 1992. Since the inductors aren't labeled, I don't have anything to verify their values, but at least the labels on the capacitors match up to the schematic.

Two things I can't find are the 2uF bypass capacitor between the fuse and the tweeter's positive lead, and the 2 ohm series resistor. Does the yellow wire take that function, or is it just not there?

Follow Ups:

RE: 2.6R crossover - expected vs actual - Emsquare 15:26:42 10/03/12 (3)
There may have been a revision at some point. Measure the DCR of your 2.6 tweeter. The schematic indicates 1.45Ω. You may find that yours are 3.2Ω. (I found this to be the case with my 2.6's) This could be fortuitous if you have an interest in bi-amping your 2.6's because it's not that hard to find amplifiers that are stable at that load. It also means that your speaker crossover is a straight 18/12 db type and not a 18/(12/6 quasi) as it seems to indicate in the schematic. It's far easier figure out than a quasi tweeter network.
Also be skeptical of the listed 1000 Hz. crossover point. Although I have forgotten (have to find the model again) I think that schematic suggests a tuning below 800 Hz.

Tom Waits, Cooler than you for thirty years.

Edits: 10/03/12
- Crossover frequency - neolith 19:28:46 10/03/12 (2)
  I got 670 Hz and 780 for the MG 2.5. Magnepan and other speaker manufacturers tend to report crossover frequencies with a bit of latitude rather than exactitude.
  
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  - RE: Crossover frequency - drlazybones 20:26:47 10/03/12 (1)
    You mean the low pass and high pass have two different xo points? What did you use to calculate them? I tried to match the values up but they aren't standard.
    - RE: Crossover frequency - neolith 18:23:06 10/04/12 (0)
      I have a spreadsheet that does much of the work for me. Search the archives for a link.
      For a 1st order HP filter f= 1/(2*pi*R*C)
      For a 1st order LP filter f= R/(2*pi*L)
      For 2nd order filters (HP or LP) f= 1/[2*pi*sqrt(L*C)]
      
      Most of the Magnepan crossovers are asymmetric with different cutoff frequencies, as well as different orders and slopes, for the low and high pass filters
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RE: 2.6R crossover - expected vs actual - dumpingground 11:26:16 10/03/12 (1)
The white wire splice plastic connectors on your black, brown, blue and red wires don't look stock. Looks like somewhere in the past your crossover has been tweaked and thus may not have all of the regular components.

Edits: 10/03/12 10/03/12
- RE: 2.6R crossover - expected vs actual - RickeyM 21:00:04 10/03/12 (0)
  Yeah, those white wire splice plastic connectors are not stock. That indicates someone's been in there. On my MG-2.5R's, the resistor/cap network was on the back of the speaker terminal plate alongside the fuse holder.

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