Tuning - Subwoofers

Tuning The Amplifier - Subwoofer (s)

1) Input Switch

Move switch to the right-hand (MONO) position (refer to the diagram on page 5); the inputs are summed to mono. Connect the subwoofer to the speaker output terminals marked for mono operation. NOTE: Subwoofer impedance is 2 ohms minimum.

2) Head Unit

The head unit should have all controls such as bass, treble, balance, and fader set to the flat or centered position. The volume control should be at the minimum setting. If the head unit has any equalization or bass management features such as boost, they should be deactivated at this time. Turn head unit on, and verify that the RED status LED (logo) is illuminated on the amplifier.

3) Volume

With the chosen musical track playing, turn the head unit volume control up until the maximum level of undistorted signal is heard from the speakers. For most head units, this will be at the end of the volume control range.

WARNING! A distorted signal from the head unit sent to the amplifier can cause speaker failure at higher listening levels.

4) Input Sensitivity Control

Turn control (refer to the diagram on page 5) all the way counterclockwise (minimum position). In this position, the amplifier will be less sensitive to the input signal from the head unit. Slowly rotate this control clockwise until maximum undistorted playing level is heard from the subwoofer(s). Listen closely for faults such as bottoming from the subwoofer(s). If fault is detected, rotate input sensitivity control counterclockwise until fault is eliminated. At this point, the maximum undistorted subwoofer playing level has been defined.

Bridged Lowpass with Q-Tune™Switch Configuration Diagram

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Boston Acoustics GT-2300, GT-2200, GT-275, GT-2125 Tuning Subwoofers, Tuning The Amplifier Subwoofer s, Input Switch
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GT-2300, GT-275, GT-2125, GT-2200 specifications

Boston Acoustics is a renowned brand in the world of audio equipment, known for delivering high-quality sound across various platforms. Among their noteworthy offerings are the GT-2200, GT-2125, GT-275, and GT-2300 speakers, each designed with unique features and technologies that cater to audiophiles and casual listeners alike.

The GT-2200 is particularly celebrated for its robust construction and exceptional sound clarity. Featuring a 2-way design, it incorporates a 6.5-inch polypropylene woofer, which ensures deep bass response, complemented by a 1-inch silk dome tweeter for crisp high frequencies. This combination results in a well-balanced audio performance, making it suitable for various types of music. The speaker also boasts a frequency response range from 40Hz to 25kHz, allowing listeners to experience a rich soundstage.

Next, the GT-2125 takes a similar approach with its 2-way design but enhances the audio experience with a larger 8-inch woofer. This added driver size provides even more depth to the bass while maintaining clarity in vocals and instruments. The GT-2125 also features a sleek cabinet design that minimizes resonance and distortion, ensuring that the sound remains clean and true to the original recording. Additionally, its high-quality crossover network seamlessly blends the sound from the woofer and tweeter for a cohesive listening experience.

The GT-275 stands out with its powerful 3-way configuration, incorporating a 10-inch woofer, a mid-range driver, and a tweeter. This triad of drivers allows for a more dynamic sound reproduction, making it well-suited for home theater setups. The GT-275 is engineered with advanced technologies, including Boston Acoustics’ patented power handling capabilities, which help ensure that the speakers can withstand high volumes without compromising sound quality.

Finally, the GT-2300 offers a versatile experience with its bi-amping capability. Users can connect separate amplifiers to the woofer and tweeter, allowing for tailored sound adjustment based on personal preferences and room acoustics. This model features a durable cabinet design that offers both aesthetic appeal and acoustic performance.

In summary, Boston Acoustics' GT series, with models like the GT-2200, GT-2125, GT-275, and GT-2300, reflects a commitment to quality audio engineering. Each model showcases unique features and technologies, making them viable options for anyone looking to enhance their listening experience, whether for music or home theater systems. With their robust construction and superior sound quality, these speakers are sure to impress even the most discerning audiophile.
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