(PRESS RELEASE): Radial Engineering Ltd. is pleased to announce the Space Heater 500 is now shipping. The Space Heater 500 is a single-wide tube overdrive module for the Radial Workhorse and other 500 series racks that delivers natural crunch to drums, adds character to voice, and natural compression to bass and acoustic guitar.
According to Radial product guru, Jay Porter: "When we launched the eight channel Space Heater, it became immediately apparent that we had no choice but to make a module for our growing 500 series customer base. The Space Heater sounds huge and brings so much excitement to production it will likely become one of those tools that you use each and every time you lay down a track."
The design begins with a single-wide 500 series module in a fully enclosed steel enclosure. This not only protects the sensitive electronics but also helps prevent outside radiation from causing noise, or from the Space Heater 500 creating buzz, due to the high voltage required by the 12AX7 tube. This, in fact, is part of the magic. A 3-position HEAT switch enables the user to choose between 35 volts, 70 volts or 140 volts for the desired level of tube distortion. Distortion is further adjusted using the combination of a drive control plus a level for make-up gain. The plate voltage is generated by an internal charge pump while the Workhorse or 500 series 16V supply provides the 12AX7 tube the 12 volts needed for the heater. A Jensen transformer is employed at the output to bring a more vintage character to the signal path while benefiting from galvanic isolation to reduce hum and buzz caused by ground loops.
To further refine the sonic response, the Space Heater 500 is equipped with both high-pass and low-pass filters. These allow the engineer to focus the tube effect on a particular frequency band or spread it out as needed. The EQ can also be applied to the signal path either pre or post tube for even greater tonal flexibility.
For more information on Radial's Radial Space Heater 500 Tube Overdrive