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Trinity Power AMP Reference Manual

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Reference

Power AMP

MANUAL

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Summary of Contents for Trinity Power AMP

  • Page 1: Power Amp

    Reference Power AMP MANUAL...

  • Page 2: Thank You

    The TRINITY POWER AMP is parted in a voltage gain stage and a current gain stage with its own global feedback. The voltage gain input stage is based on...
  • Page 3 Photo PA...

  • Page 4: Table Of Contents

    CONTENTS Safety Instructions ....................5 Scope of Supply ............................6 Transportation and Cleaning ........................6 Selecting the Power Voltage ........................7 Connecting and Starting ..........................7 Wiring Up..............................8 Technical descriptions ..........................9 THE FINAL MEASUREMENTS.......................20 Warranty..............................27 Support.................................28...

  • Page 5: Safety Instructions

    SAFETY INSTRUCTIONS 1. Please read this operating manual carefully and observe all the instructions affixed to the appliance or written in this manual. 2. Install this product on a stable surface and make sure that nobody can trip over the cables. 3.

  • Page 6: Scope Of Supply

    SCOPE OF SUPPLY The scope of supply comprises: • TRINITY Power AMP • 1 x Flight Case, weight: 59kg, dimension: 80cm, 60cm, 40cm TRANSPORTATION AND CLEANING Please only transport the parts listed in the scope of supply in the supplied flight case and use the supplied cotton gloves when unpacking and installing the appliances to avoid scratching the enclosures.

  • Page 7: Selecting The Power Voltage

    CONNECTING AND STARTING To install the TRINITY Power AMP, select a stable, level surface directly next to the turn table so that the connecting cable to the tone arm is as short as possible. Avoid placing the appliance in direct sunlight and never place the modules directly next to radiators or fan heaters.

  • Page 8: Wiring Up

    4. To select the Stereo Mode, press the selection push button on the back of the amp. 5. Connect the Power Amp to the loudspeakers. Choose the red and white connectors for the stereo mode and use the two red connectors for the Mono-bridge mode.
  • Page 9 However, as we must use an amplifier and a cable, art and science are both employed in order to minimise the inevitable degradation.” “Loudspeakers”, Philip Newell and Keith Holland Objectives of an ideal power amp An ideal audio amplifier should have the following characteristics: - Infinity Power Bandwidth...
  • Page 10 The development target of the TRINITY POWER AMP was to get as close as possible to these objectives. Since the maximum output power is not a sound relevant parameter, we decided to build a moderate power amp, which is nevertheless able to drive 2Ohm loads almost distortion free.
  • Page 11 From the theory we know an amplifier is always stable on all complex loads, if the “open loop” output impedance is zero. Zero is impossible, but we can reduce the output impedance, if we use more output transistors in parallel. Therefore 168 pieces of NPN/PNP pairs are working in parallel in each of the TRINITY Power Amplifier. That means overall...
  • Page 12 Figure 1 Simulated Closed Loop Output Impedance & Damping Ratio for an 8Ohm loudspeaker...
  • Page 13 Normal Output Stage This outstanding damping ratio is only possible with a different design of the output stage. Figure 2 shows the arrangement of the output stage of a common audio amplifier. - high over all voltage gain - a shunt Zobel network for stability into inductive loads - a series output inductor//damping resistor for stability into capacitive loads - a relay for DC-offset protection Figure 2 Normal output stage of a power amplifier...
  • Page 14 TRINITY Power AMP Output Stage Figure 3 shows the simplified design of the output stage of a TRINITY Power AMP - low voltage gain of 2 in the current output stage - no shunt Zobel network - no series output inductor/damping resistor...

  • Page 15: The Final Measurements

    What you see (in the measurement results) is what you get. The measurements are done after a burn-in of 48hours. The most of the measurements are showing the worst case, with the TRINITY Power AMP running at the maximum input voltage and driving the lowest load resistor.
  • Page 16 all distortions are below -140dB!!!!! FFT Voltage Gain Stage 1kHz, 1Vrms Input Voltage,...
  • Page 17 FREQUENCY RESPONSE of the Complete Power Amp 25Vrms_No Load_8Ohm, 4Ohm & 2Ohm, 0.5dB at 200kHz at full load, caused by the extreme low output impedance all curves lay on the top of each other...
  • Page 18 Small Signal - Frequency Response of the Current Gain Stage 3dB Corner Frequency at 7.5MHz...
  • Page 19 Small Signal - Group Delay Response of the Current Gain Stage is 29.843ns!!!!
  • Page 20 GAIN 25Vrms_No Load_8Ohm, 4Ohm & 2Ohm...
  • Page 21 Phase 25Vrms_No Load_8Ohm, 4Ohm & 2Ohm...
  • Page 22 THD vs. Frequency 25Vrms_No Load_8Ohm, 4Ohm & 2Ohm all Harmonics up to 100kHz are counted In the worst case the THD are below 0.004% at 20kHz at full power into 2Ohms...
  • Page 23 THD & Noise vs. Frequency 25Vrms_No Load_8Ohm, 4Ohm & 2Ohm all Harmonics up to 100kHz are counted...
  • Page 24 THD vs. Input Level 1kHz Load_8Ohm, 4Ohm & 2Ohm...
  • Page 25 FFT 20Hz 100W into 8Ohm...
  • Page 26 FFT 20Hz 200W into 4Ohms...
  • Page 27 FFT 20Hz 300W into 2Ohms...
  • Page 28 FFT 1kHz 100W into 8Ohms...
  • Page 29 FFT 1kHz 200W into 4Ohms...
  • Page 30 FFT 1kHz 300W into 2Ohms...
  • Page 31 FFT 10kHz 100W into 8Ohms...
  • Page 32 FFT 10kHz 200W into 4Ohms...
  • Page 33 FFT 10kHz 300W into 2Ohms...
  • Page 34 FFT_IMD_SMPTE_4-1 into 8Ohms...
  • Page 35 FFT_IMD_SMPTE_4-1 into 4Ohms...
  • Page 36 FFT_IMD_SMPTE_4-1 into 2Ohms...

  • Page 37: Warranty

    WARRANTY The warranty period of the Trinity Power AMP is 2 years. • Within the warranty period, any material and production defects will be rectified according to the following conditions: • The warranty period begins with the purchase of the product and only applies to first buyers.

  • Page 38: Support

    SUPPORT If you have any questions relating to installation, operation or options, we will be pleased to answer them. TRINITY Electronic Design GmbH Johann Wieser Ring 11 8609 Aschheim, Germany Tel. +49 (0) 89 – 20186577 E-mail. db@trinity-ed.de Internet: http://www.trinity-ed.de...

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