So the clips mount on the black trim ring and then the sonatube slides over it?  Does the sonatube fit all the way down the black trim ring or only down to the metal clips?  Again, I don't see how it could go all the way down where I belive it should be...the black trim ring over hangs the sonatube by maybe 1/32", not really enough material for the clips to push down on.

I don't think it's supposed to slide all the way down over the trim ring. There should be a very shallow ridge along the circumference where it stops.

If nothing else, just notch four small parts of the sonotube out where they are hitting the clips. That should be fine. Don't forget that B&O taped the sides of the sonotube from the factory as well.

Can't wait to hear your opinion on these after some listening time!🙂

Jon

DKAudio wrote:

So the clips mount on the black trim ring and then the sonatube slides over it?

Yes, that should work just fine.

Sorry I didn't answer your question the first time. Just got home from work and I'm beat!😴

Jon

Got both cabinets complete, still not really confident about the 8's mounting, powered them up and bad news...the big dome "phase-link units" aren't working in either cabinet.  I really hope it is something simple, I'm already in $250, I know they're hooked up to the crossover.  When I get a chance I can ohm out the voice coils, they should be 8 ohms I assume?  Could it also be bad caps in the crossover or not likely?

Oh man! That sucks. Especially after all the work you've put into them!

Set your multimeter to measure the DC resistance of the driver. Should be around 5 or 6 ohms. Or, just hook the mids directly to your receiver at a nice, low volume and play some music.

If you get sound then obviously the problem lies in the wiring or crossover. If you have a nicer multimeter with more functions, you can desolder the capacitors and measure their capacitance. As old as they are, it could very well be a/some bad cap/s.

I have heard that the domes sometimes have a propensity for toasting voice coils, but I've always found them to be pretty sturdy with the given crossover.

Jon

I'm nervous/pissed...I have a good Fluke DMM that has capacitance.  I hope it is in the X-over!

I checked one and it is fine!  Got a clean reading of 6.8 ohms, huge relief, I’m sure the other one is fine too.  I also checked the crossover’s traces for continuity and all is good.  At this point I wonder if I should just purchase the capacitor kit and replace all the capacitors.  I would have to unsolder them from the circuit to check capacitance anyways.  I’m sure the resistors and inductors are fine (don’t have an inductance meter).  I could check them to make sure they aren’t open though.

Martin, how much is the capacitor kit?

While I'm doing this, is there also a benefit to replacing the wire to the 8's and 10's and from the back of the speaker to the crossover input?  They look pretty thin 18AWG or so.

I'm also going to re-look at the 8's mounting, still very uncomfortable.  I understand what you are saying Jon but there just is barely any material for the clips to push down on.

I had fun doing all of this:

S45-2 project:

• Replaced caps in crossover
• Replaced terminal cup - new cup has 5-way binding posts
• Replaced all wiring
• Replaced damping material in cabinet, but left damping material as-is in the midrance subenclosure
  
• Replaced grill cloth

S40 project

• Replaced foam surrounds on woofers
• Replaced caps in crossover
• Replaced terminal cup - new cup has 5-way binding posts
• Replaced all wiring
• Replaced damping material in cabinet

In both pairs of speakers, the wire from the terminal cups to the crossovers was maybe 16 gauge, maybe 18.  From crossovers to drivers, much smaller, perhaps 22 or even 24 gauge.  The wire appeared to be, however, a high quality silver.  Definitely good stuff.  Was rewiring necessary?  Probably not.  Was replacing the terminal cups or damping material necessary?  Probably not.  But that's how I roll.  🤒

Anyway, I'm getting to my point.  It's not a nominal undertaking, rewiring.  Unless you're replacing the terminal cup, I think you should think twice about rewiring completely, especially a four way system.  I don't envy your recapping task having seen the crossover network you get to play with.

Keep it coming. this is better than any soap opera, I'm facinated.

Martin, you there?