PHASE CONTROL

The Phase Control switches allow the TRM10s/TRM12s to be acoustically aligned with other speakers in your system. 0˚, -90˚, -180˚, or -270˚ degrees of phase shift at 80Hz can be selected using DIP switches 2, 3, and 4. For 0˚ degrees of phase shift, leave all three switches in the OFF (up) position. –270˚ degrees of phase shift occurs when switch 2 is selected in the ON (down) position. –180˚ degrees 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˚ degrees 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 TRM10s/TRM12s and the full-range speakers.

4)From the listening position, alternate between the TRM10s/TRM12s 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˚ degree phase settings. The setting with the highest SPL reading from your listening position will produce the most effective acoustic alignment.

6)Set the TRM10s/TRM12s 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 TRM10s/TRM12s Low Pass frequency, changing the acoustic environment (i.e., traps, diffusors, etc.), 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.

Input (2 cycles)

90 phase lead

Moved ahead 1/4 cycle

90 phase lag

Moved back 1/4 cycle

90Phase Lead and Lag

12dB

Sine

12dB

High Pass

Wave

Low Pass

90° Lead

 

90° Lag

+

_

Phase Shift

180° (cancellation)

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

– 12 –

Page 20 Page 22
Page 21
Image 21
Hafler TRM10S, TRM12S manual Phase Control, Setup Procedure
Page 20 Page 22

TRM12S, TRM10S specifications

The Hafler TRM12S and TRM10S are two standout models in the world of professional studio monitors, designed to meet the demands of sound engineers, audiophiles, and music producers. Known for their exceptional performance and clarity, these monitors are integral to contemporary studio environments.

The TRM12S is equipped with a robust 12-inch low-frequency driver, ensuring deep bass response. This model has been tailored for larger spaces, delivering an impressive output that doesn't compromise on precision. It handles low-end frequencies adeptly, making it ideal for electronic music production, film scoring, and any genre where bass fidelity is paramount. The wide dispersion pattern of the TRM12S allows for a consistent listening experience across different positions in the room.

In contrast, the TRM10S features a slightly smaller 10-inch low-frequency driver, which is perfect for smaller studio setups or for users who prefer a more compact design without sacrificing sound quality. Despite the size difference, the TRM10S still offers profound bass response, making it versatile for various applications, from mixing to casual listening.

Both models utilize Hafler's proprietary technologies, including advanced, high-efficiency amplifiers that provide clean, high output with low distortion. This enables the monitors to produce a wide dynamic range, making it easier for sound engineers to make critical mixing decisions. The integrated DSP (Digital Signal Processing) allows for precise tuning of the audio output, which compensates for any deficiencies in the acoustics of the space.

Another key feature of the TRM series is the adjustable room compensation settings. This functionality empowers users to tailor their monitor settings based on room dimensions and placement, ensuring the optimal playback environment.

Moreover, both the TRM12S and TRM10S are built with durability in mind, featuring rugged enclosures that minimize resonance and vibration, resulting in a clearer audio reproduction. Their sleek design ensures they blend seamlessly into any studio décor, while providing professional-grade sound quality.

Overall, the Hafler TRM12S and TRM10S are designed for professionals seeking reliable, accurate monitors that excel in delivering unparalleled sound fidelity. Their combination of advanced technology, thoughtful features, and solid performance makes them a worthy investment for any serious studio setup.
Top Page Image Contents