US customers: Please note that your order will ship from a US address!!
The following Mark Audio drivers are in stock but some are not in the shopping cart database yet. Please email.
Alpair 12P, CHR70 Gold, CHP70 Black Paper, Alpair 7 Gold, Alpair 7A Gold, Alpair 6A Gold, CHR70A Grey, CHBW-70
Thanks for the pictures Al.
The SDX12 shipment has arrived and you can now order SDX12 Promo and SDX12 Single. Here is the spec sheet. The following Quartet combinations using this driver, a variety of amps and our APR passive radiators have been developed and some are shipping now.
Quartet SDX12A, Quartet SDX12B, Quartet SDX12C, Quartet SDX12D
This driver also functions well in sealed enclosures and we have added 4 Duet combinations which can be built in either of 2 sizes.
Duet SDX12A, Duet SDX12B, Duet SDX12C, Duet SDX12D
Please ask about our special pricing for the Antimode products when you buy this driver.
The LD25X tweeter with the detachable faceplate is no longer available as an OEM customer has purchased them all. A similar tweeter is in development but several months away.
DSPeaker Antimode Dual Core 2.0 is out of stock again. Hoping for more the week of the 18th but that isn't confirmed.
Congatulations to Dr Jim Griffin who won the half price Triton kit at the recent Kentucky DIY event. Dr Griffin has done a new ML TL design to get the most bass out of the VWR126Xs. The design is complete and available HERE.
New VX.2 Build. These look really great!!
The VX.2MLTL is under construction. Details to follow.
New VX.1 ($220) and VX.2 ($300) kits designed by Al Wooley


New Triton Kit designed by Jeff Bagby
Here is a review from Robert who built this kit Triton Review. Triton kit winner build thread.
Triton kit winner at the Iowa Event with his units.
US customer's order will ship from Meniscus who also sell the kit.
The Mark Audio ALPAIR 12P is back in stock though the quantity isn't large.
There are some specials in our Canuck Audio Mart listings, so please check those. More will be added.
We have the new DSPeaker Anti-Mode Dual Core 2.0 room and speaker equalizer in stock.
We are out of TRIO12s and the SDX12 is on order.
New Invictus design with the LD25X by Curt Campbell
US customers can get this kit from Meniscus. Canadian customers please contact CSS by email or phone
New Sub Plate Amp PA-500 $240 shipping included.
The following products are listed under CSS-Next Generation
LD25X Silk dome tweeter - the first XBL tweeter you can buy
LD25XPROMO Get 4 for the price of 3!!

VWR126X very wide range mid woofer.
VWR126XPROMO Get 4 for the price of 3!!
The ComboPromo Get 2 of each at the same discount
Kits combining these 2 with crossovers are in development.
Subwoofer Kits!
We have our subwoofer kits available. These feature one or two of our APR passive radiators, and a choice of CSS drivers.
Creative ported SDX10 build on Home Theater Shack.
New SDX10 build on DIYAUDIO. Thanks Sam.
Another APR10 build with Joshua. Thanks
Adjustable Passive Radiators in Stock!
Our patent-pending Adjustable Passive Radiators the APRTM 10, 12 and 15 have arrived. APR PDF APR10 $65; the APR12 $80; APR15 $80.
Checkout Jeff Bagby's new software and instructions on using the APRs. Thanks Jeff.

The SDX10 expands CSS's line of XBL2 TM SubDuction subwoofers and is targeted at smaller cabinet installations.
· Lightweight paper and carbon fibre blend pressed and surface treated cone
· CONEX 180mm flat attach semi-progressive spider
· NBR 30mm roll surround
· Low distortion patented XBL2TM motor topology with split aluminium former, aluminium and copper shorting rings
· 6 layer 4 ohm 2.39" (60.6mm) voice coil with copper clad aluminium wire
· Flat BL curve with less than 2.5% THD at 1" (25.4mm) peak to peak excursion
Target Parameters
Fs 26 Hz, Qes 0.47, Qms 4, Qts 0.42, Vas 53 l, Re 3.5 ohms, Xmax 18.4mm, Sd 300 sq cm, Le 1.42 mH, BL 11.8 Tm, Mms 112 g, Pe 300 watts
Cabinet Suggestions
Sealed: Qtc 0.7 24 litres net, 16 oz of polyfill
Ported: 43 litres net, 3" flared port 17" long tuned to 24.5Hz, 16 oz polyfill
FYI: If you have specific questions regarding shipping costs for multiple items please don't hesitate to email using the form on the contact page.