Radial Space Heater 8 Channel Summing Mixer
Radial Space Heater 8 Channel Summing Mixer
8-Channel Summing Mixer & Tube Drive
The Space Heater is an 8-channel tube overdrive that can be used as an analog summing mixer or as a multi-channel studio effects device, utilizing the tube circuitry for a range of effects from subtle warmth and grit to full harmonic distortion.
Warm up your digital tracks
The Space Heater is a high performance summing mixer that allows you to blend tracks out-of-the-box in the analog domain, with oversized output transformers and vacuum tubes for vintage warmth and character. Eight mono input channels or four stereo pairs are available, with a heat switch on each pair to adjust the voltage on the 12AX7 tube – lower voltage settings starve the tube for a more pronounced distortion effect. Separate Drive and Level controls on each channel give you complete control over each tube circuit, providing a range of tones that allow you to fatten up digital stems or provide a distorted effect on vocals, guitars or drums.
Space Heater Applications
Software insert
Use the Space Heater™ on eight individual tracks in your mix to add grit or character. Adjustable Level and Drive tailors the level of distortion from subtle to extreme.
Summing 8 or more channels to stereo
Complete your final summing out-of-the-box by sending stereo stem mixes to the Space Heater. Mix four stereo stems down to a master stereo output, or link multiple Space Heaters together for analog summing heaven!
With in-ear monitors
Get the natural feel and tone back into your in-ear monitors by adding the natural compression of tube distortion into the signal path. It’s like playing in front of your amp without the stage noise!
Features:
- 12AX7 vacuum tube overdrive & summing mixer
- Heat switch adjusts voltage applied to each tube
- Individual outputs to use as an 8-channel effects insert
- Transformer-coupled outputs for vintage tone
- On
Used to turn on (or bypass) each of the four channel sets. - Bus
Sends the channel set to the stereo mix bus and headphones. - Drive
Outer control on each concentric pot sets the level going to the tube drive circuit. - Heat
Sets the B+ voltage going to the 12AX7 tube with 35, 70 or 140 volts for more or less distortion. - Level
Sets the output from the tube drive – acts like a master volume on a tube guitar amp. - Tube Drive On
Activates the tube drive – may be bypassed to compare wet versus dry or revert to the transformer coupled signal path. - HPF
High pass filter gently rolls off low frequency resonance below 40Hz to remove excessive bass. - Mix Bus
Turns on the XLR outputs. Used to adjust the summing mixer output level. - Headphone
Stereo 1/4″ headphone output with level control. - Power
Turn the Space Heater off to conserve tube life and reduce power consumption and heat. - Power
5-pin locking XLR connection for the external power supply. - Link
Stereo ¼” TRS link in/out bus combines 2 or more Space Heaters together for 16×2, 24×2 or 32×2 tube summing. - Stereo Sum Outputs
Provide left and right summed outputs for the most luxurious old school analog character. - Ground Lift
Recessed switch lifts pin-1 on the two XLR outputs to help reduce hum and buzz caused by ground loops. - D-Sub Outputs
25-pin D-sub is used to send all 8 transformer isolated channels back to the mixing console or workstation. - Send
Eight ¼” TRS balanced sends feed the post tube signal to an external processor or may be used as additional outputs for parallel processing. - Receive
Eight ¼” TRS balanced receive jacks bring the signal back to the Space Heater and routes it to the D-Sub output or stereo mix bus. - D-Sub Input
25-pin D-Sub follows the Tascam/ProTools standard and is wired in parallel to the ¼” jacks. - Inputs 1-8
Eight ¼” TRS balanced inputs for easy connection to the Space Heater. - Warranty: Radial 3-year, transferable
Specifications:
- Audio circuit type: Class-A tube gain stage with IC buffers
- Number of channels: 8
- Frequency response: 20Hz – 20Khz, +0/-3dB
- Dynamic range:96dB
- Gain: +33dB@140V, +29db@70V, +27dB@35V
- Clip Level: +26dBu
- Input Impedance: Bypasses: 50k? in parallel with your load device | Active: 100k?
- Output Impedance: Balanced Output: 180? | Mix Bus: 100?
- Common Mode Rejection Ratio: -70dBu @ 55Hz
- Equivalent Input Noise: 103dBu
- Noise:@ Max Gain: -64dBu @ 140V, -66dBu @ 70V, -70dBu @ 35V
- Maximum Input:+22dBu
- Features:
- LPF
- Input Connectors: 1/4″ TRS, D-Sub
- Output Connectors:XLR, 1/4″ TRS, D-Sub
- General:
- Construction: 14 gauge steel chassis and outer shell
- Size (L x W x D):17.5″ x 6″ x 1.75″ (44.5cm x 15.25cm x 4.45cm)
- Weight: 8.5lb (3.8kg)
- Shipping size (L x W x D):22″ x 10.375″ x 4.5″ (55.9cm x 26.4cm x 11.4cm)
- Shipping weight: 9.5lb (4.3kg)
- Power:External switching type 100V – 240V AC, 1600mA output with 5 pin XLR
- Conditions: For use in dry locations only between 5°C and 40°C
