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Owner's Manual

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Summary of Contents for Mesa/Boogie Subway TT-800

  • Page 1 Owner’s Manual...
  • Page 2 Greetings from the Home of Tone® …You, smart player and intuitive human, have put your trust in us to be your amplifier company. This is something that we do not take lightly. By choosing this instrument to be part of your musical voice, you have become part of the MESA® family… WELCOME... and to those of you who are already part of the Mesa family, we thank you for returning to your roots.
  • Page 3: Table Of Contents

    Table of Contents PRECAUTIONS OVERVIEW ____________________________________________________________________________________ 1-4 INSTANT GRATIFICATION ________________________________________________________________________ 4 FRONT PANEL INPUT JACK ____________________________________________________________________________________ 4 MUTE SWITCH __________________________________________________________________________________ 4 GAIN SWITCH __________________________________________________________________________________ 4 DEEP SWITCH __________________________________________________________________________________ 4 BRIGHT SWITCH ________________________________________________________________________________ 5 BOOGIE CHANNEL CONTROLS __________________________________________________________________ 5-6 SUBWAY CHANNEL CONTROL ___________________________________________________________________ 6-7 PARAMETRIC MID EQ CONTROLS _________________________________________________________________ 7 MASTER SECTION _____________________________________________________________________________ 7-9 REAR PANEL...
  • Page 4 Make certain grounding conforms with local standards. YOUR AMPLIFIER IS LOUD! EXPOSURE TO HIGH SOUND VOLUMES MAY CAUSE PERMANENT HEARING DAMAGE! Your MESA/Boogie® Amplifier is a professional instrument. Please treat it with respect and operate it properly. READ AND FOLLOW INSTRUCTIONS OF PROPER USAGE.
  • Page 5: Overview

    OVERVIEW: Congratulations on your choice of the SUBWAY TT-800™ and welcome to the MESA/Boogie® family! First, we would like to thank you for choosing us as your amplifier company and trusting us to help create your musical voice. This is something we never take for granted and you’ll find that we are here and ready to assist should you ever need help.
  • Page 6 OVERVIEW: FRONT PANEL The SUBWAY TT-800 begins with the front panel input section, which is comprised of the INPUT jack, MUTE switch and HIGH/LOW GAIN switch. The INPUT jack feeds a high impedance J-FET input “buffer amplifier” which provides appropriate loading for all active and passive pickups (including most piezo types).
  • Page 7 CHANNEL EFFECTS LOOPS, an AUX input, and a TUNER output. One feature that sets your new SUBWAY TT-800 apart from the rest of the market is the inclusion of a two studio grade XLR balanced DIRECT OUTPUTS.
  • Page 8: Instant Gratification

    INSTANT GRATIFICATION: The SUBWAY TT-800 is really a very simple amp to get great tone. Start with the MUTE switch down (mute off), the GAIN SWITCH to the low gain position, the DEEP and BRIGHT SWITCHES off, and the HIGHPASS FILTER set to the 9:00 position.
  • Page 9: Bright Switch

    BRIGHT SWITCH: This switch (and its associated blue “tally” or “indicator” LED) engages the BRIGHT filter, which causes a rising response at higher frequencies much like the “bright” switches found on many popular classic tube amps. Engaging this filter can bring some “sizzle & bite” into the tone. BOOGIE CHANNEL: GAIN CONTROL: This control determines the gain (drive level) of the BOOGIE CHANNEL’s 12AT7 (or 12AU7) vacuum tube...
  • Page 10: Subway Channel Control

    MID FREQ CONTROL: This control shifts the response of the MID CONTROL as the control is rotated clockwise from the normal “classic” position. In the fully clockwise (shifted) position, the amp will be voiced flatter with a little more of a modern feel. This control simultaneously adjusts both the range and the effective Q of the midrange filter, becoming narrower and steeper as the control is rotated counter-clockwise.
  • Page 11: Parametric Mid Eq Controls

    BOOGIE CHANNEL will over-ride the footswitch. OUTPUT OVERDRIVE SYMMETRY: Another “new” concept introduced in the SUBWAY TT-800 is the OUTPUT OVER- DRIVE SYMMETRY control, which provides adjustment to the symmetry of the output soft clip circuitry waveform just like how many tube phase inverters and tube output stages behave in real world tube amps.
  • Page 12 With higher damping, an amp will feel a little tighter, dryer and more controlled on the bottom end. To some players it may feel more “immediate”, others may describe the feeling as “tight” or “dry”. On the SUBWAY TT-800, the damping factor is designed to be medium-low (at approximately 50, like the Bass 400+) and remains relatively constant no matter what the speaker load is, emulating what happens through the output transformer on a tube power amp.
  • Page 13: Rear Panel

    COOLING FAN: The SUBWAY TT-800 incorporates a low speed, high reliability cooling fan which allows it to drive stressful loads (including 2 ohms) at very high duty cycles. Be sure the fan’s inlet and head’s vent slots are not blocked or the amplifier’s protection circuits will shut the amplifier down due to a thermal fault condition.
  • Page 14: Speaker Impedance

    The lower the speaker’s impedance, the greater the current that the power amplifier must provide. The lowest impedance that the SUBWAY TT-800 amplifier is capable of driving safely is 2 ohms (with the impedance selector switch in the 2 ohm position).
  • Page 15: Headphone Output

    BOOGIE CHANNEL mode regardless of the position of the footswitch). MESA sells SUBWAY TT-800 specific footswitches (two button) separately through our authorized dealers and distributors, our parts and accessories online store, or by contacting our customer service department.
  • Page 16: Direct Out Section

    DIRECT OUTPUTS (DI OUT): A new feature that sets your new SUBWAY TT-800 apart from the rest of the market is the inclusion of a two tube driven studio grade XLR balanced direct outputs:...
  • Page 17: Discussion About Smps And Class D

    DISCUSSION ABOUT SMPS & CLASS D FROM THE DESIGN TEAM: QUESTION: What makes this new amplifier so light weight? ANSWER: This amplifier uses new technology, both an SMPS (SwitchMode Power Supply) and a Class D power amplifier, to de- crease the size and weight. These designs are carefully implemented and fully tested to insure robust, reliable performance in real world conditions night after night.
  • Page 18: Troubleshooting

    description, there are many details omitted, but the basic operational function is accurate. There is a lot of engineering that goes into making a high performance, robust, safe and reliable design.) QUESTION: Why does this amp use 12AT7/12AU7 type tubes/valves and not 12AX7 type tubes/valves? ANSWER: This amp uses these tubes along with additional circuitry and techniques to accurately model some specific response and feel elements without the negative artifacts that are more common to many 12AX7 approaches.
  • Page 19 level signals. (Try unplugging effects from effects loop, if the distortion disappears, try the effects between the bass and the input of the amp.) 4. Slightly intermittent cable in system (this can be an instrument cable, patch cable or loose screw in SpeakOn plug) 5.
  • Page 20 SYMPTOM: Noise (popping) in audio: 1. Popping while playing, especially one string. (check bass set-up to be sure there is adequate clearances between the string and pickup pole pieces.) 2. Popping while just sitting there, or when touched. (under dry environmental conditions, it’s possible that electrostatic discharge is the cause.
  • Page 21 PLAYER’S NOTES AND REMINDERS PAGE 17...
  • Page 22: Factory Sample Settings

    FACTORY SAMPLE SETTINGS BOOGIE CH: CLASSIC ROCK POWER POWER BOOGIE CH PROTECT LIMIT MUTE HIGH 25HZ 125HZ NORM SHIFT CHANNEL GAIN HIGHPASS BASS MID FREQ TREBLE VOLUME SELECT 1KHZ PLAY DEEP BRIGHT FTSW GAIN ASYM O/D SYMMETRY 25HZ 125HZ 150HZ 2KHZ SUBWAY CH INPUT...
  • Page 23: User Settings

    USER SETTINGS POWER POWER BOOGIE CH PROTECT LIMIT MUTE HIGH 25HZ 125HZ NORM SHIFT CHANNEL GAIN HIGHPASS BASS MID FREQ TREBLE VOLUME SELECT 1KHZ PLAY DEEP BRIGHT FTSW GAIN ASYM O/D SYMMETRY 25HZ 125HZ 150HZ 2KHZ SUBWAY CH INPUT POWER POWER BOOGIE CH PROTECT...
  • Page 24: Specifications

    Specifications Output Power Rating: 400 Watts RMS @ 8 ohms, 10% THD (includes preamp O/D THD) [note 1] 800 Watts RMS @ 4 ohms, 10% THD (includes preamp O/D THD) [note 1] 800 Watts RMS @ 2 ohms, 10% THD (includes preamp O/D THD) [note 1] Signal to Noise Ratio: BOOGIE Channel: -67dB (20-15kHz, unweighted, controls at 12:00 positions) SUBWAY Channel: -69dB (20-15kHz, unweighted, controls at 12:00 positions)
  • Page 25: Service Information

    SERVICE INFORMATION • USA /CANADA Customer Support: For technical support, troubleshooting, tone questions, settings help and more... 707-778-6565 Monday-Thursday, 9AM-5PM Pacific Time NOTE: If a Product Specialist is not available when you call (helping other customers), PLEASE leave a voice message with a phone number and a good time to call and WE’LL CALL YOU BACK! •...
  • Page 26: Block Diagram

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  • Page 27: Parts List

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  • Page 28 20/05/20...

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