X-LS Encore Kit (Pair)

(1 customer review)


The price is per pair.

The X-LS Encore kit comes with everything you need minus cabinet material. So assembling the speakers are very easy and at a beginner to novice level. Parts used in the crossover for the basic kit (no upgrades) are all Erse polypropylene caps, non-inductive wire wound resistors, Erse XQ air core inductors, and Gen. 2 Sonicap by-pass caps. The crossover requires point to point assembling. The kit comes with binding post cups, ports, high quality OFC wire in polyethylene, screws, solder and heat shrink. We now offer fully assembled Encores ready to play! Click here for details.

Bookshelf Speaker Dimensions:
Width: 8.5″ (216mm)
Height: 13.5″ (343mm)
Depth: 12″ (305mm)

SLS Tower dimensions:
Width: 8.5″ (216mm)
Height: 37″ (940mm)
Depth: 12″ (305mm)

Impedance: 8-Ohms

We recommend 1 sheet of NoRez for the X-LS bookshelf, and 2 sheets for the X-SLS towers. (not included)

Need a Flatpack?
X-LS Bookshelf
X-SLS Tower

Baltic-birch plywood flatpacks:
More info here


Need a flatpack?

GR-Research and Denton Woodworkers have teamed up to offer flatpack’s, assembled and finished cabinets for a number of our DIY kits. All flatpack’s are CNC’ed for precise fittings which makes the project much easier.

The X-LS Encore came about as a direct result of the success of the X-LS Classic design. As the X-LS Classic was setting new performance standards for a mini-monitor in a budget price point, and winning industry awards with every review. It was also rivaling and bettering many speakers in much higher price points. So AV123 (the company producing the X-LS Classic) asked the questions, how far could the performance of this speaker go if the production budget were increased? What would need to be done to it for it to compete with any mini-monitor design regardless of price?

The strength of the X-LS Classic was its woofer. The M-165 woofer had a very smooth and accurate response that needed very few components in the signal path to control it. And it had a beautiful mid-range and clean bass response. The crossover parts used were also very good. The tweeter, while very good, was not one of the worlds best dome tweeters. So an obvious choice was to upgrade the tweeter. Looking at the best available dome tweeters, the Peerless T26SG was selected for its low Fs, high sensitivity, well damped rear chamber, high quality materials, high quality workmanship, and a really smooth response. Resolution levels with this tweeter are very high as well, and one of the best the industry has to offer in this regard.

As designed the X-LS Encore speakers began beating up the competition. It was also an ideal platform for additional modifications and tweaks. An X-LS Encore with point to point wired crossovers using all Sonicaps, Mills resistors, foil inductors and lined with No Rez won the StereoMojo small speaker shoot out in 2007.

The X-LS Encore (like the Classic version) is an 8 ohm load and has 87db sensitivity. The -3db down point is 55Hz. The low 1.8kHz crossover point allows for a great driver integration and consistent phase relationship of the drivers over a wide vertical range. The vertical and horizontal off axis is excellent so the in room response is very smooth and consistent.

The X-LS Encore was also released as a small floor standing speaker with an optimal ported air space. This version was tuned lower allowing a -3db down point of 45Hz. This version is called the X-SLS Encore. This version is also a good choice because speaker stands are not needed. The lower section of the cabinet can also be sand filled for added stability.

The X-SLS version of the kit includes additional wire. The X-SLS option adds $11.50 to the kit cost.

Additional upgrades for the X-LS include a Sonicap upgrade. The Sonicaps increase clarity across the board and improve resolution levels.

The X-LS can also be improved by upgrading the binding post cups to the Electra Cable tube connectors. The tube connectors are the highest quality connectors currently on the market. They offer improved clarity across the board and are extremely easy to install. The tube connector upgrade is $50.

​You might also want to add a sheet of No Rez. See No Rez.

Additional information

Weight 16 lbs
Dimensions 13 × 10 × 10 in

X-LS Bookshelf, X-SLS Floorstanding Version ($11:50)

Connector Upgrade

Standard Binding Post Cup, Tube Connectors ($55)

Capacitor Upgrade

Stock polycaps, Sonicaps ($289)

1 review for X-LS Encore Kit (Pair)

  1. Kevin Dillinger (verified owner)

    Just finished my set. The kit has everything you need and the support is amazing. I ordered the assembled cabinets and they were excellent. If your thinking about this kit I would strongly recommend it. There is nothing like building these out then hooking them up and get to hear what all your work achieved. And to top it off they sound amazing. Wish I had heard about this DIY stuff long ago. I will be defiantly be ordering the matching center channel in the future. Thanks GR-Research for making these quality of product for all us DIY guys to enjoy.

Only logged in customers who have purchased this product may leave a review.

The Mills resistors and Miflex bypass caps, as shown in these videos below, are no longer offered as an upgrade for any of our kits.

Frequency Response

Vertical Response

Impedance Response

Horizontal Response

Spectral Decay