Note: If you want to overdrive the first TUBE stage, use an external preamp between your instrument and the Passive input. To obtain optimum sound when trying this, make sure the preamp clip LED is not activated. If this occurs, turn down your Gain control until the LED does not light. The first preamp tube stage is NOT monitored by the preamp clip circuit for this reason.

ACTIVE INPUT

The Active input jack should be used with instruments having a built-in (on board) preamp or other sound sources that will produce output levels greater than 1 volt RMS. Some of these basses are the Kubicki X-Factor and some older Ovation electrics. Some really “hot” pickups installed in your instrument may sound better through the Active input. The best judge is your own ears.

If you’re using a keyboard or bass pedal with the Bass 350, we have found the best choice to be the Active input.

Note: Using the Active input with passive basses (active instruments will always employ a battery) may result in a loss of high end transients. Players who roll off their high end start- ing at about 2kHz, or prefer a “darker” sound, may find this input more to their liking.

If you hear some distortion with your active bass and are using the Active Input, make sure the preamp clip LED indicator is not lighting. If the preamp stage is not being driven into clipping, replace the battery in your instrument.

GAIN CONTROL

The Gain control adjusts the volume of the preamp section. Since the Gain control is similar to a “pad,” a small amount of signal will be heard even with the Gain control rotated fully counter- clockwise (with the Master Volume up).

After all EQ settings and the Aural Enhancer are set, the Gain control should be raised until the preamp clip LED barely flashes when your loudest note is struck. This will insure maximum signal to noise ratio and prevent unwanted clipping of the preamp section.

Note: The Gain can serve as an EFFECTS SEND LEVEL ADJUSTMENT. If your effect is being overdriven, turn down the Gain control and re-adjust your Master volume for overall loudness.

PREAMP CLIP LED

The preamp clip LED will light whenever the preamp, tone section or output buffer reach clipping (run out of headroom). This function does NOT monitor the first tube stage of the Passive input. See that section for more info.

In the event the clip indicator lights, turn down the Gain control. Since this circuit monitors the tone controls, boosting any one of them can cause the clip LED to activate. Once again, you may leave the tone control at its desired level, but turn the Gain control down further.

AURAL ENHANCER

The Aural Enhancer was developed to bring out the fundamental low notes of the bass guitar, reduce certain frequencies that help “mask” the fundamentals, and enhance high end transients. This effect becomes more pronounced as the control is turned to maximum. The result is a more transparent sound and is especially noticeable with a slap style of playing. A particularly favorite setting for live gigs is at about 2 o’clock. This position of the Enhancer brings out both the low end fundamentals and crisp highs and, at the same time, adds a little lower midrange to help cut through the band.

BASS 350 USER GUIDE 3

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SWR Sound 350 manual Active Input
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350 specifications

The SWR Sound 350 is a celebrated bass amplifier renowned for its powerful performance and user-friendly features. Designed for both professional musicians and hobbyists, this amp caters to a wide range of musical styles, making it a versatile choice for bassists.

One of the key features of the SWR Sound 350 is its impressive power output. With 350 watts of peak power, the amp ensures that players can achieve the loudness and clarity necessary for various venues, from intimate clubs to large concert halls. This power is complemented by a robust speaker cabinet that can handle the low frequencies without distortion, allowing bassists to dive deep into the music without losing punch or definition.

The SWR Sound 350 is equipped with advanced tone-shaping controls, which include a three-band EQ. This allows players to sculpt their sound according to their specific needs. The bass, mid, and treble knobs give users the flexibility to fine-tune their tone, whether they aim for a deep, smooth low-end or a bright, cutting high.

Another standout feature is the built-in limiter, which helps to prevent signal clipping and ensures that the output remains clean, even at higher volumes. This technical innovation allows players to push the amp to its limits without fearing distortion, providing peace of mind during performances.

In terms of connectivity, the SWR Sound 350 offers a range of options, including a balanced XLR output for direct connection to PA systems. This feature is exceptionally beneficial for live performances, as it allows for an uncolored, direct signal that preserves the amp's character. Additionally, there are multiple inputs for different instruments, making it easy for musicians to switch between bass guitars or even utilize a variety of effects pedals.

The chassis design is also noteworthy. Built with durability in mind, the SWR Sound 350 features a rugged outer casing that can withstand the wear and tear of frequent transport. The lightweight design makes it easy to carry around, while still maintaining a robust sound quality that players can rely on.

In summary, the SWR Sound 350 is a powerful and versatile bass amplifier that combines robust performance with user-friendly features. Its impressive wattage, advanced tone controls, built-in limiter, and multiple connectivity options make it a top choice for bassists looking for reliability and sound quality in one compact unit. Whether for practice, recording, or live performance, the SWR Sound 350 stands out as an essential tool for any serious bassist.
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