SVPCL Bass Preamp

The Front Panel:

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1.INPUT: Connect your instrument here by means of a shielded instru- ment cable.

2.PAD: This switch, when depressed, attenuates the input signal by 10dB. Attenuation allows the Gain control (#4) to be used at a higher setting. If clipping is indicated with the Gain con- trol close to fully counter clockwise, attenuation is needed.

3.MUTE: This switch, when depressed, mutes the signal at all out- puts except the Tuner Output (#21).

4.GAIN: Use this control to adjust the level of the signal going into the pre- amp. For the best signal to noise ratio, set this control so the Peak LED (#5) flashes occasionally during loud pas- sages.

5.PEAK: This LED flashes when the signal level into the preamp approach- es clipping. When the Mute switch (#3) is depressed, this LED remains illumi- nated as a visual indicator that the Mute function is active.

6.ULTRA LOW: Use this five-position rotary switch to select a setting for the ultra low control, as follows:

1:Off – flat frequency response

2:Sub Cut – reduces frequencies below the bass range to protect the speakers

3:Low Cut Classic – provides a low cut equal to the original SVT

4:Ultra Low Classic – contours the sound to emphasize the low end just like the original SVT

5:Ultra Low Modern – provides a substantial low end boost

7.ULTRA HIGH: This switch, when depressed, adds about a 16dB boost to the high frequencies around 8kHz, depending on the setting of the Gain control (#4).

8.BRIGHT: This switch, when de- pressed, adds a 6dB boost to the high frequencies at 3kHz.

9.BASS: Use this control to adjust the low frequency output level. This control provides +17/-13dB at 20Hz.

10.MID: Use this control to adjust the midrange frequency output level. This control provides +/-20dB at the fre- quency selected by the Mid freq con- trol (#11).

11.MID FREQ: Use this control to select the center frequency for the Mid control (#10), as follows:

1:220Hz

2:450Hz

3:800Hz

4:1.6kHz

5:3kHz

12.TREBLE: Use this control to adjust the high frequency output level. This control provides +18/-20dB at 7kHz.

13.MASTER: Use this control to adjust the overall output level of the preamp.

14.POWER: Use this switch to turn the preamp on (top of the switch depressed) and off (bottom of the switch depressed). The adjacent Ampeg logo illuminates green when the preamp is on and the tubes are warmed up.

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Ampeg SVPCL manual Front Panel
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SVPCL specifications

The Ampeg SVPCL is a standout preamp that has carved out a reputation among bass players for its exceptional tone-shaping capabilities and versatility. Known for its robust construction and user-friendly interface, the SVPCL is designed to cater to both studio and live applications, making it an essential tool for any serious bassist.

One of the main features of the SVPCL is its all-tube preamp design. This traditional tube circuitry delivers pure, rich harmonic content, providing a warm and dynamic sound that many musicians crave. Utilizing 12AX7 tubes in its preamp section, the SVPCL offers musicians the classic Ampeg tube tone that has been revered for decades. The combination of vacuum tubes and solid-state technology offers players the best of both worlds, ensuring optimal performance in various settings.

The SVPCL is equipped with a comprehensive set of tone controls, including a 5-band EQ that allows for precise adjustments. Musicians can easily shape their sound with high and low shelving filters, notch filters, and midrange control. This extensive EQ capability enables players to tailor their tones for different genres, from punchy rock to smooth jazz, all while maintaining clarity and integrity.

Another key feature is the built-in compressor. This allows for seamless control over dynamics, helping to achieve a more balanced sound whether in a live setting or recording environment. The variable control ensures that bassists can dial in the perfect amount of compression for their specific needs, adding sustain without sacrificing punch.

Connectivity is another strong point for the SVPCL. The unit features both XLR and 1/4-inch outputs, allowing for direct connection to mixing consoles or amplifiers. This dual output option ensures flexibility in signal routing, enhancing the versatility of the device for both on-stage performances and studio recordings.

Moreover, the direct output includes a ground lift switch, which helps eliminate unwanted hum and noise, ensuring a clean and interference-free signal. This practical feature makes it an indispensable tool in any live rig or studio setup.

In conclusion, the Ampeg SVPCL preamp combines classic tube warmth with modern functionality, offering professional features tailored for discerning musicians. With its comprehensive EQ, built-in compression, and versatile connectivity options, the SVPCL stands as a remarkable asset for achieving exceptional bass tones, whether in the studio or on stage. Its enduring legacy within the bass community speaks to its quality and innovation, ensuring it remains a top choice for bassists seeking outstanding sound and performance.
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