[Blues Fan]

So I bought NX-3 Towers, (without flatpack) and have the cabinets about done.  I applied a coat of sanding sealer to the inside of the cabinet all surfaces while the back is off so that the No-Rez will adhere to the cabinet walls, sticking something raw MDF is like sticking to dust.

Next will be mounting the drivers.  Then assembling the crossover network with those big capacitors.   I prefer to put the crossover inside the cabinet, bur where can it go so it doesn't block airflow, etc?   

[Wigand]

Really looking forward to this as no one did a thread on this jet. Hoping for a lot of pics

[yamaha626]

Well on the old N3 build, it was between braces D & F
https://www.audiocircle.com/index.php?topic=108845.0

[Blues Fan]

I took lots of pics during NX-3 Tower cabinet construction. Someone let me know how to post pics and I will.   When assembling the crossover will need to mount them on a big perfboard or something.  Is it best to avoid big metal terminal points?  I got the optional (giant) capacitors, and it looks like 3rd order filters?  A bunch of coils and caps.  first idea was to put the low pass section at the "bottom" of the main cabinet, and the High pass section below in the transmission line, but I need to work up an actual size plan on a piece of cardboard and see where I can place it.

Alternate plan would be to get more tube connectors, bring leads out for the woofer(s) and a set for the planar tweeter and house the crossover in a box behind the NX-3.  This ideal when adjusting the crossover, but I don't think I will need to get at these, but if back and front are glued on I would never be able to access the lower HP section, so I may have to have a removable panel?   Still thinking it.

I built my NX-3 with 3/4 MDF, cutting each piece to precise dimensions listed.  This is for simple butt joints.   I used Gorrila Glue, coating both surfaces and the clamping it secure for an hour or more,  I got to buy a Jasper circle cutting jig for my router and made the cutouts and recess for tweeter flange real easy and clean.

I don't trust MDF glue joinery, so after everything was assembled (except the backs) I drilled and installed 40 dowels in each cabinet to add structural strength.

[JCarney]

I don't trust MDF glue joinery, so after everything was assembled (except the backs) I drilled and installed 40 dowels in each cabinet to add structural strength.

Awesome! Overkill, gotta love it.

JCarney

[Blues Fan]

Found a video where Danny builds a crossover for the Encore,  He layed out the caps and coils like on the schematic and twisted leads together and soldered the leads well once all connected.  Then he tied down everything with zip ties,  No terminals, driver leads come right off the coil or cap and soldered.  Not pretty, but no terminals of various metalurgy in the signal path and quite compact.

I made up a 1/4" plywood crossover board 4.5" x10" and used up most of the real estate.   Big honking Sonic Caps and thick gauge coils.  For location on the older NX minitower Danny prefers the crossover mounted on the back wall low behind the lower woofer..  This looks good for "airflow" and short leads to all drivers and the tube connectors.  I am getting anxious to here these NX-3 speakers in my room!