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SV Subwoofers

The LEVEL control is the amount of attenuation on the signal located at the center frequency. MIN is equal to 0dB and MAX is equal to -12dB “cut”. Each hash mark reduces the Center Point in question by 1.5dB.

The “FREQ” control (short for frequency) is the adjustment for the center point of the cut and should target the highest peak frequency in the room’s response. Each hash mark for this control moves the center frequency for the desired cut 5Hz, within a range of 20-80Hz.

Adjustments of the parametric equalizer. The first step to adjusting a PEQ is determining the “Center Point” of the cut. Determining the Center Point allows us to establish a target, or baseline, for further adjustments. In this example (again, look- ing to the graph in Figure 3), the peak frequency is roughly 40Hz.

At this stage we’ll estimate the beginning (lowest frequency) and the end (highest frequency) of the peak. In Figure 3 the beginning would be located somewhere near 25Hz and the end, or Highest Frequency, would be near 50Hz. This would be a 25Hz bandwidth, with a Center Point located at 37.5Hz (the midpoint between 25 and 50hz). Notice that the center point of 37.5Hz is not located precisely at the peak frequency in the response curve, which was estimated at 40Hz. Why? If we used 40Hz as our center frequency and 50Hz as our high point cutoff we would only at- tenuate the curve down to 30Hz. This will leave a small bump in response near 25Hz because the correction would only be located between 30Hz to 50Hz.

Now that we determined the Center Point we can adjust the “FREQ” control knob to 37.5Hz, or between the fourth and fifth hash marks, clockwise from the left.

The next step will properly adjust the “Q” setting. We again need to use Formula 1 and calculate the Q setting from Figure 3 using Highest Frequency and Center Point figures just determined above.

50Hz – 37.5Hz = 0.33 37.5Hz

.33 Q … or just past the third hash mark, clockwise from the left of this control.

Now that we have successfully adjusted the Q and Frequency controls, we need to make the final Level adjustment. In Figure 3 the adjustment should be somewhere near –10dB to –11dB, or on the 8th hash mark from the left (1.5dB cut per hash mark), completing the adjustments for the parametric equalizer.

Measure room response for accuracy. After all the adjustments are made we recommend you measure the room again to make sure the adjustments are correct. If the new response curve is not acceptable then fine-tune things some. For example, if the response curve still shows a small peak you should adjust the Level control again to compensate. Make sure your overall SPL calibration is set as de- scribed earlier in this manual, and enjoy your optimized subwoofer!

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SV Sound PB12-Ultra, PB12-Plus, PB12-ISD/V manual 50Hz 37.5Hz = 0.33 37.5Hz
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PB12-Ultra, PB12-ISD/V, PB12-Plus specifications

SV Sound has made significant strides in the world of high-performance audio with its acclaimed lineup of subwoofers, including the PC12-Plus, PB12-Plus, PB13-Ultra, SB13-Plus, and PC13-Ultra. Each model is designed to deliver unparalleled sound quality and an immersive listening experience, making them ideal for both home theaters and music enthusiasts.

The PC12-Plus is a compact, ported subwoofer that boasts a 12-inch driver capable of producing thunderous bass. Its cabinet design optimizes airflow, reducing distortion while enhancing low-frequency output. The built-in amplifier delivers 300 watts of continuous power, with peak output reaching up to 700 watts, ensuring that every rumble is felt as much as it is heard. The PC12-Plus is also equipped with adjustable phase control and low-pass filters, allowing users to finely tune their bass response based on their room acoustics.

The PB12-Plus features a similar design but emphasizes portability and efficiency. Also utilizing a 12-inch driver, it emphasizes the ability to generate room-filling bass without compromising space. The built-in amplifier matches the PC12-Plus in power, promising rich low frequencies ideal for both cinematic action sequences and music playback alike. Its robust cabinet construction allows for minimal vibration and resonance, maintaining clarity in sound reproduction.

For those seeking uncompromising power, the PB13-Ultra is a standout. This subwoofer features a larger 13.5-inch driver and an impressive 1000 watts of continuous power, peaking at 3700 watts. This model is engineered for serious enthusiasts who demand deep-reaching bass extension, and it excels in both music and home theater settings. The advanced DSP technology provides users with precise control over the subwoofer’s settings, allowing for an incredibly adaptable performance.

The SB13-Plus is a sealed subwoofer that excels in delivering tight, accurate bass response. Its design minimizes distortion while maximizing punch, making it an excellent choice for music lovers who appreciate precision. This subwoofer is equipped with similar power specs to the PB12-Plus, offering 300 watts continuous and 700 watts peak power. Its compact design makes it versatile enough to fit in smaller spaces without sacrificing sound quality.

Finally, the PC13-Ultra combines elements from its predecessors with upgraded specifications. Featuring an ultra-long-throw 13.5-inch driver and an expansive amplifier setup, it can produce overwhelming bass that resonates throughout larger spaces. It incorporates advanced room correction technologies, ensuring optimal performance regardless of placement.

In summary, SV Sound’s PC and PB subwoofers are characterized by their robust design, powerful amplifiers, and advanced technologies. Each model serves unique needs, offering powerful bass while maintaining clarity and precision, from compact designs for finesse in smaller spaces to large models that dominate in larger environments.
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