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April 10, 2020


River Macomber's Scion XB

River Macomber a long time friend and support of the PowerBass brand created his PowerBass Equipped SOUNDWAVE for competition in sound quality as well as SPL and car shows all across socal! 

SOUNDWAVE started off as a stock SCION XB and was equipped with ULTRA Wheels wrapped up by Triangle Tires and of course the audio system had to be top notch every time, but SOUNDWAVE's audio set up has seen many changes over the years with this latest build set to the biggest one yet! The sound system starts with the receiver which is a Clarion NX706 which feeds out to a 12 channel processor on fiber-optic cable. This way there is absolutely no degradation of signal. The C-DSP 8X12 processor by miniDSP is the true brains of the system.

Getting great sound comes with great tuning ability and line voltage using 10 of the 2 channels available with 6 volts signal output to the 6 amplifiers. Providing power to the amplifiers is critical so River went at this task giving each of the monoblock amplifiers 2 runs of 0 gauge wire fed directly from a bank of FULL THROTTLE Batteries providing 485 amp hours of current. Of course this is supplemented by a 300 amp internally regulated AutoTech Engineering alternator. Running at a cool 14.5 volts at idle. Before big events the onboard 30 amp FR1 battery charger ensures bass will be playing for hours.. 

With a sound system that can be heard well over a half a mile away, you know it’s got to sound incredible up close. This is what Powerbass delivers. “ I’ve had people exit the freeway and said they could hear my sound system long before the Anaheim stadium was in view.” -River Macomber


  • 2 - XMA-4250IR Amplifiers
  • 4 - XMA-2000D Amplifier
  • 8 - XPRO-8CX Midrange Drivers
  • 1 - 2XL-63.3C 3 way component set
  • 8 - 4XL-2H Horn Tweeters
  • 8 - 3XL-1501D Subwoofers
  • 2 - LX-POD6LR 6" Long Range Pods
  • ALL POWERBASS XWS and XRCA Connections

For more great photos of this awesome project follow River and his SOUNDWAVE on Instagram and also check out his blog on The World of Car Shows for some great reading material too! 

Instagram: @sq4me2

Blog: The World (and people) of Car Shows

To be included in the PowerBass Garage please email us at [email protected] with information on your project.  Please include a brief write up, all shops and sponsors involved, as well as a PowerBass product list.  For photos you can request to upload to our drop box or send us a link, be sure to include a high res shot for your cover page and have all other photos saved as .PNG files.