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Summary of Contents for 3rd Power AURORA 35
- Page 1 ™ ™ AURORA 35 MODEL INPUT HYBRID VENUE MODE VOLUME MIDDLE BASS REVERB HF DAMP TREBLE PATENTED ATTENUATOR G U I T A R A M P L I F I E R U S E R S G U I D E...
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Page 2: Precautions And Warnings
Your 3RD POWER Amplifier is a professional musical instrument amplifier. The information contained herein is current at the time of publication. However, specifications are subject to change without prior notice. PRECAUTIONS & WARNINGS • READ THESE INSTRUCTIONS. • KEEP THESE INSTRUCTIONS. - Page 3 MOVING FORWARD... IN 3D Thank you for choosing the AURORA 35 by 3RD POWER as an integral component of your musical journey. Music is a thrilling blend of tone, attitude and technique. When the right combination occurs, magic happens and it’s experienced by every- one.
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Page 4: Dimensions And Weights
Tube-driven Reverb On Board The Aurora 35 features a full-size spring reverb tank on board. The design features separate Class-A vac- uum tube drive and recovery circuits that delivers a vintage sounding reverberation effect with a mix level control located on the front panel. -
Page 5: Front Panel
Front Panel: MODE TENUATOR Preparing to Operate your AURORA 35 Amplifier Make certain that all connections are made prior to operating your Amplifier including power cable, speaker connection, instrument cable and instrument connection. Make certain that all tubes are in- stalled. -
Page 6: Treble Control
Front Panel: Input Section INPUT HYBRID VENUE MODE VOLUME MIDDLE BASS REVERB HF DAMP TREBLE PATENTED ATTENUATOR Input Jacks (3) The INPUT jack is where you connect instrument level signals. HI and LOW sensitivity inputs are provided for versatility. Volume Control (4) The VOLUME control allows you to adjust the signal level as well as the temperament and overall char- acter of your instrument’s sound. -
Page 7: Bright Switch
Front Panel: Input Section INPUT VENUE MODE HYBRID VOLUME MIDDLE BASS REVERB HF DAMP TREBLE PATENTED ATTENUATOR Bright Switch (9) The BRIGHT switch allows for additional control of your high frequency content. In the down position, the high frequencies are more evenly dispersed and balanced. In the up position, the BRIGHT switch en- hances the high-frequencies for a harmonically rich ‘... -
Page 8: Reverb Control
Special Feature: VENUE MODE Attenuator (12) The Aurora 35 features our patented built-in attenuator. The new VENUE MODE switching circuitry recon- figures various circuits within the amp to optimal settings for a given performance range to maintain the... -
Page 9: Back Panel
Back Panel: AC Input (13) The AC INPUT socket (TYPE IEC Grounded) is a required connection for operating the unit at 120V (stan- dard USA household electrical power). Mains Fuse (14) The MAINS FUSE requires a 2.5 AMP slow-blow fuse. This fuse protects your amplifier from voltage peaks from your power outlet. - Page 10 MASTER 8-OHM Speaker Output (16) The AURORA 35 model has been designed to give you the greatest amount of flexibility when operating your amplifier. Now you can choose the correct speaker output impedance for your situation. Connect the internal speaker to the 8-OHM when operating only the internal speaker.
- Page 11 Hybrid-MASTER™ Control (20) The MAIN control is always active and sets the absolute volume ceiling. The foot-switchable HM bypass control will be covered later in the manual. HybridMASTER is a patented by 3rd Power. OPERATION NOTES: • Signal levels at the FX SEND jack are a nominal -10dBV (just under 1V p-p) matching the levels most vintage and modern effect pedals want to see.
- Page 12 Back Panel: HYBRID MASTER 01434 To Tank Reverb Connection (21) This RCA jack connection is provide to send the amplifier signal to the reverb tank. From Tank Reverb Connection (22) This RCA jack connection is provide to receive the return signal from the reverb tank. OPERATION NOTES: •...
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Page 13: Operational Notes
V3 and V4: Sovtek 12AX7LPS (Reverb, Phase Inverter) V5 and V6: JJ 6L6 Output tubes Bias Adjustment Your AURORA 35 Amp comes from the factory biased for JJ 6L6GC tubes. Please read the Power Tube Bi- asing section when considering to change your tubes. Tube Replacement WE RECOMMEND TAKING YOUR AMPLIFIER TO A QUALIFIED TECHNICIAN FOR SERVICING YOUR TUBES. - Page 14 Back Panel: Power Tube Biasing CAUTION: NEVER touch hot tubes!!! Temperatures can exceed 500˚F and cause severe burns! CAUTION: Read all of the information and procedures in this section before attempting to modify the factory bias settings of your amplifier. Power Tube Bias Adjustment Control (23) Controls the amount of negative DC bias voltage being fed into both output tube input grids.
- Page 15 Power Tube Biasing: CAUTION: NEVER touch hot tubes!!! Temperatures can exceed 500˚F and cause severe burns! Biasing your tube amplifier need not be a scary endeavor as the process is pretty straightforward. Heed all warnings, cautions and instructions and you should do fine. If you’re unsure or unclear on the process, do not attempt to manipulate the bias from factory settings.
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Page 16: Factory Settings
Power Tube Biasing: Factory Settings Factory Settings: Your amplifier ships with the bias settings optimized for maximum flexibility and safety. During QC and final testing, the bias is set maximum safe power dissipation (approximately 60% of a given tube’s performance rating). Power Tube ~Plate ~Bias... -
Page 17: Limited Warranty
Incidental or Consequential Damage: In no event will 3RD POWER be liable for any incidental or consequential damages arising out of the use or inability to use any 3RD POWER product, even if a 3RD POWER dealer has been advised of the possibility of such damages or any other claim by any other party. Some states do not allow the exclusion or limitation of consequential damages, so the above limitation and exclusion may not apply to you. - Page 18 *INTENTIONALLY LEFT BLANK FOR YOUR NOTES AND FAVORITE AMP SETTINGS...
- Page 19 ™ 3RD POWER Amplification 3rd Power Amplification/Audio Pro Gear LLC 7605 Washington Ave S, Edina, MN 55439 Phone: (615) 945-3393 Web Site www.3rdPower.com Monday, April 21, 2025...
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