Hafler Trans-nova TRM8.1 Installation & Operation Manual
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Hafler Trans-nova TRM8.1 Installation & Operation Manual

Hafler Trans-nova TRM8.1 Installation & Operation Manual

2-channel audio power amplifier/speaker
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Summary of Contents for Hafler Trans-nova TRM8.1

  • Page 2: Declaration Of Conformity

    Importer’s Name: ________________________________________________________ Importer’s Address: ________________________________________________________ Type of Equipment: 2-channel Audio Power Amplifier/Speaker Model No.: TRM8.1 Serial No. ______________________________Year of Mfg. I, the undersigned, hereby declare that the equipment specified above conforms to the above Directive(s) and Standard(s) Place: Hafler Date:...
  • Page 3 NOTICE - IMPORTANT SAFETY INFORMATION READ INSTRUCTIONS All the safety and operating instructions of your Hafler equipment should be read before power is applied to the equipment. RETAIN OWNER'S MANUAL These safety and operating instructions should be retained for future reference.
  • Page 4 ADVERTENCIA – INFORMACION DE SEGURIDAD IMPORTANTE LEA LAS INSTRUCCIONES Todas las instrucciones de seguidad y operación de su equipo Hafler, deben ser leídas antes de que el equipo sea conectado dléctricamente. CONSERVE EL MANUAL DEL PROPIETARIO Estas instrucciones de seguridad y operación, deben ser conser- vadas para futuras referencias.
  • Page 5 à éviter toute pénetration dans l'enceinte du matériel. 14. DÉGÂT NÉCESSITANT UNE RÉVISION Le matériel Hafler devrait être révisé par des personnes qual- ifées de service après-vente, lorsque: A. Les fiches ou la prise de courant ont été endommagé, ou: B.
  • Page 6 ACHTUNG – WICHTIGE SICHERHEITS – INFORMATIONEN INSTRUKTIONEN LESEN Alle Sicherheits- und Operationshinweise Ihres Hafler Equipments sollten vor der Inbetriebnahme gelesen werden. BETRIEBSANLEITUNG AUFBEWAHREN Bewahren Sie die Bedienungsanleitung sorgfältig auf, damit Sie in dieser auch in Zukunft nachschlagen können. WARNUNGEN BEACHTEN Alle Warnungen des Gerätes und der Bedienungsanleitung sind...
  • Page 7 Si deve prestar attenzione che oggetti e liquidi, come fluidi deter- genti e bibite, non vengano versati all'interno dell'apparato. 14. RIPARAZIONI Gli apparati Hafler devono essere riparati da personale qualifica- to quando: A. Il cavo di alimentazione o la spina sono danneggiati B.
  • Page 8 ERFORMANCE TRM8.1 Free Field Frequency Response 45Hz–21kHz, ±2dB ≥123dB (per pair w/music @ 1m) Peak Acoustic Output Total Harmonic Distortion (THD) <0.5%, 100Hz–21kHz (90dB @ 1m on axis) High Frequency Driver 1" (25mm) Soft Dome Low Frequency Driver 8" (200mm) Polypropylene Cone/...

  • Page 9: Table Of Contents

    ABLE OF ONTENTS SAFETY PRECAUTIONS ...i PERFORMANCE SPECIFICATIONS Frequency Response Graph Energy Time Curve Graph Horizontal Polar Response Graph INTRODUCTION ...1 TECHNICAL DESIGN FEATURES ...1 FRONT & REAR PANEL VIEWS ...4 INSTALLATION Location ...5 Acoustic Center...6 Mounting ...6 OPERATION Input Switch ...7 Input Sensitivity...8 Amplifier Mute ...8 Bass Shelving ...9...

  • Page 10: Introduction

    NTRODUCTION Thank You and congratulations on your purchase of the HAFLER TRM8.1 reference monitor, the world's finest brand in professional audio equipment. The TRM8.1 (Trans•nova Reference Monitor) is a bi-amplified, two-way near field monitor offering unmatched quality and performance in a truly professional grade product. The TRM8.1 is great for Professional Studios, Digital Work Stations, Broadcast Booths, and Home Project Studios.
  • Page 11 AMPLIFIER trans•nova (U.S. Patent 4,467,288) The trans•nova (TRANSconductance NOdal Voltage Amplifier) is a patented circuit that allows the audio signal to pass through the amplifier at low voltage. Each amplifier channel utilizes its own “fully floating” power supply and is configured to increase power gain. The increase in power gain allows the driver stage to operate at a lower volt- age.
  • Page 12 TWEETER Wave Guide The wave guide is a proprietary axis-symmetrical form of horn mounted to the tweeter to increase efficiency. The wave guide improves the transition of sound waves (from planar to spherical) smoothly from the throat of the wave guide to the mouth.
  • Page 13 Front Panel View Wave Guide Tweeter Treble LED Bass LED Woofer Rubber Pad Rear Panel View Heatsink Power Switch AC Line Input AC Line Fuse Unbalanced Input Balanced Input...

  • Page 14: Technical Design Features

    NSTALLATION LOCATION The location of your reference monitors in addition to the acoustics of the listening room will influence the system frequency response. In the near field environment, our ears are more sensitive to direct sound rather than the reverberation of sound. Below are some recommendations for the initial set-up which may help you optimize performance in complex acoustic envi- ronments.

  • Page 15: Acoustic Center

    100 WB / 100 WBX 1 “OmniMount Systems®” is a registered trademark of OmniMount Systems, 1501 West 17th Street, Tempe, Arizona 85281-6255, TEL (602) 829-8000 FAX (602) 756-9000. OmniMount Systems is not affiliated with Hafler or Rockford Corporation. – 6 –...

  • Page 16: Operation

    PERATION INPUT SWITCH The unbalanced input uses a conventional RCA phone jack. Move the input switch UP to use this jack. The balanced input jack is a dual function connector accepting a 1/4" Phone (Tip- Ring-Sleeve) or an XLR plug. The 1/4" Phone jack is connected according to con- ventional usage.
  • Page 17 Qualified Service Personnel Only Woofer Designators in Parentheses...
  • Page 18 CHEMATIC IAGRAM NOTES: Unless specified otherwise 1. All resistors in ohms. 2. All capacitors in microfarads. 3. Channel 1 only shown. Removable Center Spread...
  • Page 19 Qualified Service Personnel Only Powered Speaker Amplifier Removable Center Spread...

  • Page 20: Input Switch

    PC B OARD AYOUT Qualified Service Personnel Only Silkscreen Component Side Removable Center Spread...

  • Page 21: Input Sensitivity

    NOTE: When using the INPUT SENSITIVITY, select only one switch configuration at a time. Engaging multiple switch configurations (i.e., moving two or more switches up) may cause undesirable operation and is NOT RECOMMENDED. INPUT SENSITIVITY The Input Sensitivity adjustment is used to match the monitor with signal levels from a variety of mixing consoles. The Input Sensitivity uses DIP switches to match input levels over a 15dB range and are marked +1dB, –2dB, –5dB, –8dB, and –11dB.

  • Page 22: Bass Shelving

    NOTE: When using the BASS SHELVING & TREBLE SHELVING, select only one switch configuration at a time. Engaging multiple switch configurations (i.e., moving two or more switches up) may cause undesirable operation and is NOT RECOMMENDED. BASS SHELVING Bass Shelving is used to match the low frequency response of the monitor to the acoustic environment. Bass Shelving uses DIP switches to control frequencies from 40Hz to 200Hz over an 8dB range and are marked +4dB, +2dB, –2dB, and –4dB.

  • Page 23: Ac Line

    AC LINE The TRM8.1 operates from a 115 VAC/60Hz power line. The TRM8.1 CE operates from a 230 VAC 50/60Hz power line. Connection is made by a 16 gauge, IEC Type 320, grounded line cord. For safety considerations only a properly ground- ed (earthed) receptacle should be used.

  • Page 24: Led Indicators

    LED INDICATORS Amplifier operation is monitored internally and each channel has a status LED. These indicators can be used for system troubleshooting in case of aberrant behavior. TREBLE LED – Monitors the status of the high frequency (treble) amplifier. BASS LED – Monitors the status of the low frequency (bass) amplifier. COLOR GREEN FLASHING RED...

  • Page 25: Parts List

    ARTS DESIGNATOR VALUE ALL RESISTORS IN OHMS 2k, 1/10W, 1% 1k, 1/10W, 1% 1k, 1/10W, 1% 47k, 1/10W, 5% 2k, 1/10W, 1% 1k, 1/10W, 1% 1k, 1/10W, 1% 2k, Trimpot 200, Trimpot 47k, 1/10W, 5% 1k, 1/10W, 1% 10k, 1/10W, 5% 100k, 1/10W, 5% 470, 1/10W, 5% 300k, 1/10W, 5%...
  • Page 26 R141 1.5k, 1/10W, 1% R142 56.2k, 1/4W, 1% R143 3.24k, 1/10W, 1% R144 3.24k, 1/10W, 1% R145 28k, 1/4W, 1% R146 2.2M, 1/10W, 5% R147 28k, 1/4W, 1% R148 604, 1/10W, 1% R149 68, 1/4W, 5% R150 220, 1/10W, 5% R151 220, 1/10W, 5% R152...
  • Page 27 CR22 MMBD914L Diode CR23 MMBD914L Diode CR24 MMBD914L Diode P Channel MOSFET LM-317, + Regulator LM-337, – Regulator N Channel MOSFET MMBTAO6L MMBT3906L MMBT3906L MMBT3904L N Channel MOSFET P Channel MOSFET MMBT5088L MMBT5088L MPS-A56 MPS-A56 MPS-AO6 MPS-AO6 MMBT5088L MMBT5087L N Channel MOSFET MMBTAO6L MMBT3906L MMBT3906L...

  • Page 28: Functional Block Diagram

    TRM8.1 F UNCTIONAL LOCK IAGRAM – 15 –...

  • Page 29: Circuit Operation

    ERVICE EFERENCE CIRCUIT OPERATION Qualified Service Personnel Only trans•nova Implementation The transistor Q24 is configured to operate as a switch which controls the constant current source, Q21, of the input differential amp, Q27 and Q28. When Q24 is off the emitter voltage is low, turning off Q21. Timing of the Soft Start function is controlled by the charging time of C70 through R168.

  • Page 30: Input Circuit

    INPUT CIRCUIT The input signal is connected to the amplifier through the balanced 1/4" or XLR connector J1, or the unbalanced RCA connector J2. Balanced/unbal- anced switch D1 will ground the inverting input buffer, allowing operation with an unbalanced sig- nal on either connector.

  • Page 31: Woofer Crossover

    WOOFER CROSSOVER The input signal at U4A pin 1 connects to the 2500Hz 2nd order low-pass filter at U112B. Approximately 2dB of additional gain can be added to this stage by adjusting R136 against the divider resistor, R137. The next stage is a 30Hz sub-sonic high-pass filter.

  • Page 32: Clipping Indicator

    CLIPPING INDICATOR The CLIP indicators are driven by the comparator U5A and U5D. The voltage divider R56, R57, and R51, R61 estab- lishes the reference voltage for the Clipping detector at pin 7 of U5A and pin 9 of U5D. Excessive drive signal at pin 6 or pin 8 will trigger its comparator low and light the CLIP/THERMAL indicator red.

  • Page 33: Waveguide/Woofer Removal

    WAVEGUIDE/WOOFER REMOVAL (10) 3/32" Allen Sockets COMPONENT Tweeter “+” Tweeter “–” Woofer “+” Woofer “–” LEDs “AC4” Power Switch Power Switch TWEETER REPLACEMENT DOME Compression Clip Removal NOTE: The tweeter dome may be replaced up to 3 times without significant loss of magnetic fluid cool- ing.

  • Page 34: Amplifier Removal

    AMPLIFIER REMOVAL (6) Phillips Screws COMPONENT Tweeter “+” Tweeter “–” Woofer “+” Woofer “–” Modular Cable Detail Green Black COMPONENT LEDs Transformer Primary AC Line Neutral Green “+” White “–” WIRE AMPLIFIER DESIGNATOR Green (female 1/4" spade) White (female 1/4" spade) Red (female 1/4"...

  • Page 35: Warranty

    Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for Hafler any other liability in con- nection with the sale of the product.
  • Page 36 HAFLER A DIVISION OF ROCKFORD CORPORATION 546 SOUTH ROCKFORD DRIVE TEMPE, ARIZONA 85281 U.S.A. 1-866-GOHAFLER 480-967-3565 WWW.HAFLER.COM This product is designed, developed and assembled in the USA by a dedicated group of American workers. The majority of the components used in the con- struction of this product are produced by American companies.

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