Hafler TRM12.1, TRM10.1 manual Phase Control, Setup Procedure

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PHASE CONTROL

The Phase Control switches allow the TRM10.1/TRM12.1 to be acoustically aligned with other speakers in your sys- tem. 0˚, -270˚, -180˚, or -90˚ of phase shift at 80Hz can be selected using DIP switches 2, 3, and 4. For 0˚ of phase shift, leave all three switches in the OFF (up) position. -270˚ of phase shift occurs when switch 2 is selected in the ON (down) position. -180˚ can be achieved by selecting both switches 2 and 3 in the ON (down) position. Finally, selecting all switches 2, 3, and 4 in the ON (down) position produces -90˚ of phase shift.

Setup Procedure

1)Place all your speakers and any acoustically significant components in their working location in the listening environment.

2)Insert a sine wave signal into the audio path. Be careful to turn down the level before turning on the amplifiers.

3)Choose a frequency that corresponds to the crossover frequency between the TRM10.1/TRM12.1 and the full- range speakers.

4)From the listening position, alternate between the TRM10.1/TRM12.1 and the full range speakers and adjust the levels until they have the same acoustic output. Use an SPL meter, a microphone on a VU meter, or your ears to accomplish this.

5)With all speakers on, try the 0˚, -270˚, -180˚, and -90˚ phase settings. The setting with the highest SPL reading from your listening position will produce the most effective acoustic alignment.

6)Set the TRM10.1/TRM12.1 gain control according to your preference. This will not affect the acoustic alignment of your system.

Here is a list of some items that can affect acoustic alignment: relocating speakers, changing the TRM10.1/TRM12.1 Low Pass frequency, changing the acoustic environment (i.e., traps, diffusors, etc.), and/or changing the listening position.

Although this procedure produces the maximum achievable acoustic gain for your system, listening tests may still lead you to prefer another setup.

Example of how phase misalignment between high frequency speakers and a subwoofer can cause cancellation

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Contents Page Declaration of Conformity Damage Requiring Service CleaningPower Sources Power Cord ProtectionConserve EL Manual DEL Propietario LEA LAS InstruccionesCuadros DE Advertencias Siga LAS InstruccionesLire LES Instructions Suivre LE Mode Eemploi11. Périodes DE NON-UTILISATON Conserver LE Guide DE LutilisateurAchtung Wichtige Sicherheits Informationen Notare Importanti Informazioni Sulla Sicurezza Cmrr Performance SpecificationsTable of Contents Introduction Technical Design FeaturesMehsa Subsonic Filter TRM10.1 Schematic Diagram Page Schematic Diagram Qualified Service Personnel Only Output Circuitry Studio Installations InstallationHome Theater Installations LocationInput Switch XLR Wiring ConfigurationsInputfrom Source Operation Auto TURN-ON / Sleep ModeInput Sensitivity Gain LOW-PASS CrossoverSetup Procedure Phase ControlLED Indicator Cleaning & MaintenanceAC Line PC Board Layout Designator Value Parts ListModel TRM10CE/TRM12CE Input Circuit Phase Control CircuitMono SUM/GAIN Circuit BUFFER/GAIN Trim CircuitSoft Start Circuit Power ON/OFF Circuit Signal Sensing TURN-ON CircuitThermal Protection Circuit Calibration Woofer Replacement Amplifier ReplacementWhat is Covered Service Policy and Limited WarrantyMade in the USA

TRM12.1, TRM10.1 specifications

The Hafler TRM12.1 and TRM10.1 are professional studio monitors engineered to deliver exceptional sound reproduction within various audio environments. As part of Hafler's prestigious legacy in audio equipment, these monitors cater to audio professionals seeking durability, accuracy, and an impressive performance for mixing, mastering, and high-fidelity playback.

One of the standout features of the TRM12.1 is its 12-inch woofer, which provides a deep and powerful bass response, ensuring that low frequencies are rendered with clarity and precision. This is especially important in genres that emphasize bass, such as electronic music and hip-hop. The TRM10.1, on the other hand, is equipped with a slightly smaller 10-inch woofer, making it an ideal choice for smaller spaces or for users who prefer a more compact solution without sacrificing sound quality.

Both models utilize advanced drive technologies and high-quality components. The tweeter in each speaker is designed for wide dispersion and low distortion, allowing for a balanced high-frequency response that is essential for detailed mixing tasks. This design ensures that the monitors provide a natural and transparent sonic experience, making it easier for audio professionals to make critical listening decisions.

The unique enclosure design of the TRM series minimizes resonance and acoustic interference, which helps to achieve a cleaner and more precise sound stage. The cabinets are constructed from high-density materials to reduce vibration, providing a stable platform for the drivers to perform optimally.

Connectivity is another strong point of the TRM12.1 and TRM10.1. Both monitors feature a variety of input options, including balanced XLR and TRS connectors, making them versatile for integration into different studio setups. This flexibility allows users to connect the monitors to various types of audio interfaces and mixers easily.

User control is facilitated by adjustable rear bass and treble EQ controls, empowering users to tailor the sound to better fit their room acoustics. This feature is particularly useful in situations where room reflections may affect sound quality.

In conclusion, the Hafler TRM12.1 and TRM10.1 studio monitors represent a blend of advanced technology, robust construction, and user-friendly features. Whether in a professional mixing environment or a home studio, these monitors provide the fidelity and reliability that audio professionals depend on to bring their creative visions to life. With their impressive performance and thoughtful design, the TRM series continues to uphold Hafler's tradition of excellence in audio engineering.
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