Sensitivity (full output under clipping, 8 ohms load, 100 Hz):

Passive Input Jack: 38 millivolts

Active Input Jack: 60 millivolts

Power Amplifier (Effects Return Jack “in”): 5 volts

Input Impedance

Passive/Active Input: 800k Ohms

Active Input: 60k Ohms

Effects Return: 27k Ohms

Output Impedance

Effects Send: 100 Ohms

Tuner Send: 100 Ohms

XLR (Balanced) Out: 750 Ohms

Signal To Noise Ratio: –72 dB (<10 millivolts typical)

Equivalent Input Noise: 9 microvolts

Dimensions (depth includes handles and XLR pad): 19" W x 3.5" H x 12.125" D

Weight: 17 lbs.

350x • GETTING STARTED

Connecting Your Speaker Cabinets

The 350x is a mono amplifier, which makes things fairly simple. Locate the “Speaker Outputs” section on the rear of the amp. You will notice that there are four different speaker output jacks, two 1/4" type and two Speakon type jacks. The Speakon jacks are preferable if your speaker cabinet is equipped with Speakons as well; however, you can use any of the four available jacks to connect your speaker(s) to the 350x.

Using One Speaker Cabinet

Using a speaker cable of 18 gauge or heavier (the heavier the cable, the lower the gauge), simply connect any one of the 350x’s Speaker Output jacks to the input jacks of your speaker cabinet. If your cabinet is a 4 ohm enclosure, the 350x will deliver 350 watts into it. If your cabinet is an 8 ohm enclosure, it will deliv- er 240 watts into it. Be sure to check the power handling capabilities of your speaker cabinet before con- nection and operation.

Using Two Speaker Cabinets

Using a speaker cable of 18 gauge or heavier (the heavier the cable, the lower the gauge), simply connect any of the 350x’s Speaker Output jacks to the input jacks of your two speaker cabinets. (You can use one 1/4" and one Speakon Output jack each if you wish; however, it is always best to use speaker cables with similar type ends.) If the cabinets are the same impedance, the same amount of power will be sent to each enclosure. If the cabinets are different impedances, more power will flow to the cabinet with the lower impedance. Since the 350x is a mono amplifier and individual cabinet levels cannot be adjusted, it is recommended that you use cabinets of the same impedance when using more than one cabinet. If you use two 8 ohm cabinets—the two-cabinet setup recommended by SWR—the resulting “total” impedance will be 4 ohms, and the 350x will deliver 350 watts spread across both cabinets. Needless to say, in all cases, be sure to check the power handling capabilities and impedance of your speaker cabinet(s) before connec- tion and operation.

350x OWNER’S MANUAL • 3

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SWR Sound 350x Getting Started, Connecting Your Speaker Cabinets, Using One Speaker Cabinet, Using Two Speaker Cabinets
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350x specifications

The SWR Sound 350x stands as a noteworthy amplifier in the world of professional audio, particularly designed for musicians and sound engineers who seek high-quality performance without compromising on portability. This robust amplifier delivers a balanced blend of power, versatility, and advanced technology to meet the demands of various musical settings.

One of the standout features of the SWR Sound 350x is its impressive output power of 350 watts at 4 ohms. This ensures that it can drive a wide array of speaker configurations with ease, making it a reliable choice for gigs ranging from intimate performances to larger venues. The amp is also characterized by its lightweight and compact design, allowing for easy transport without sacrificing audio quality.

The SWR Sound 350x utilizes advanced circuitry that includes a Class D power section. This technology not only provides efficient power management but also minimizes heat output, extending the life of the amplifier. Additionally, the amp incorporates an innovative speaker protection circuit that safeguards both the amplifier and connected speakers from potential damage during high-volume performances.

Tone shaping is another area where the SWR Sound 350x excels. It comes equipped with a three-band EQ that allows musicians to sculpt their sound to fit their specific needs. Whether you are looking for a punchy low end, smooth mids, or crisp highs, the customizable EQ settings enable users to tailor their output to suit various musical styles and environments.

For added convenience, the SWR Sound 350x features auxiliary input and headphone output options. This allows performers to practice quietly with headphones or play along with backing tracks seamlessly. Built-in limiting ensures that signals stay at a safe level, preventing distortion and maintaining audio clarity.

Durability is also a highlight of the SWR Sound 350x, which is housed in a rugged, roadworthy chassis designed to withstand the rigors of touring. The intuitive layout of controls makes it user-friendly, allowing quick adjustments during live performances without fumbling.

In summary, the SWR Sound 350x is a versatile and powerful amplifier that stands out in a crowded market. Its combination of portability, advanced technology, and sound quality makes it an excellent choice for musicians looking to elevate their performance. Whether on stage or in the studio, the SWR Sound 350x is sure to deliver exceptional audio experience.
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