I decided to build a pair of AV123 X-LS Encore speakers using the X-LS Encore parts kit from Danny and gloss piano black 0,50 cu-ft cabinets from Parts Express. Also, I wanted to upgrade the performance of these speakers by installing Sonicap capacitors in the crossovers and No-Rez inside the cabinets. The following pictures were taken during the building process to show what I did: Note - Pictures of the completed speakers and my thoughts on how they sound will be posted within the next few days.

Section of center brace was removed to allow access to the back of the cabinet to install the crossover and No-Rez.

During the process of cutting the holes with a router,it is very important to cover the surface area with masking tape or packing tape to protect the cabinet surface from getting scratched.

The back side circumference of the woofer cutout was radiused using a 3/8" roundover bit.

The existing crossover mylar capacitors were replaced with Sonicaps. I originally planned to replace the existing non-inductive resistors with Mills, but Danny advised not to since the improvement would have been only subtle and wasn't cost effective.


When the front baffle boards were installed, I sealed the back side edges using a thin strip of plumbers putty. Also, in the back of the cabinets I used 1 ounce of Acousti-Stuf in lieu of Dacron Poly-Fil. In my opinion Acousti-Stuf provides a cleaner sounding midrange and tighter bass compared to Poly-Fil..