SWR Sound 350x owner manual Effects Send, Effects Receive, SubWave Activator Footswitch

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Effects Send

This jack’s primary function is to send a post-EQ-and-SubWave™ signal to an external effects device for use in the 350x Effects Loop. However, it can also be used as:

1.A line level output for use in conjunction with an additional (slave) power amp—such as SWR’s Power

2.An unbalanced output suitable for recording or live mixing board purposes.

The output impedance of the Effects Send jack is 100 Ohms.

Effects Receive

This jack’s primary function is to complete the Effects Loop circuit by routing the post-external-effects device signal back into the power amp of the 350x, where it can be blended back in with the original sig- nal by using the Effects Blend control on the front panel. However, it can also be used as:

1.A power amp input jack. If, for some reason, you wished to bypass the entire front end and use the 350x strictly as a power amp, you could take the output of whatever line-level audio source you wished and connect it to this jack. Then, set the Effects Blend control to the full clockwise (“WET”) position. Use the Master control to set the overall level, and your 350x is now a power amp only.

2.An input for pre-recorded music, for playing along and practicing purposes. To accomplish this, insert a CD player or other sound source into the Effects Receive jack. (It must be a MONO 1/4" plug that goes into this input, so you’ll have to use a stereo-to-mono cable adapter of some kind.) You can adjust the level of recorded music versus the “live” sound of your instrument by using both the Effects Blend control (the more clockwise the control, the more pre-recorded music signal you’ll hear) and the volume control of your CD (or other) audio source. The mixed sound will be heard through your speakers. Besides pre-record- ed music, this is also an excellent way to practice along with a drum machine.

Input impedance of the Receive jack is 27k Ohms minimum.

Note: Inserting a plug into the Effects Receive jack activates the Effects Blend control. The con- trol receives this command through the ground created by the phone plug making contact with the jack. The plug must be a mono plug (tip and ground). If you have a stereo plug only, it will be nec- essary to tie the ring and the ground together.

SubWave™ Activator Footswitch

Your 350x comes equipped with the capability for hands-free control of the SubWave™ effect. To achieve this function, locate the footswitch included in your 350x packaging. Connect the cable to the SubWave™ Footswitch jack on the rear of your 350x. Turn the effect on and off by stepping on the switch; the illumi- nated switch above the SubWave™ Level control on the front panel should alternate on (blue) and off, and the effect should engage and disengage accordingly.

Note: The type of switch contained inside the footswitch chassis is momentary, normally open. If you connect the footswitch to the unit while the unit is on, the SubWave effect may engage. This is normal.

Cooling Fan & Fan Mode Switch

The power amp in your 350x is cooled by two methods: 1) An (internal) extruded aluminum heatsink; and

2)A thermostatically controlled fan. This fan turns on when the heatsink reaches 50 degrees centigrade and turns itself off when the heatsink reaches 40-45 degrees centigrade. This allows for “silent running” when used at low volumes. Be sure to leave at least a 1/2" clearance between the vent on the sides of your 350x and the sides of any rack case or enclosure in which you install your amp. This will allow for the heat generated by internal components to escape.

Setting the Fan Mode Switch to the “Fan” position activates the internal cooling fan’s normal operating mode as described above. Setting the switch to the "Defeat” position deactivates the cooling fan regard- less of the internal temperature of the unit. For this reason, it is recommended that the Fan Mode Switch be set to the “Fan” position for the majority of the time that the amplifier is in operation.

Note: It is normal for the cooling fan to be audible at low levels. We recommend deactivating the fan only in situations where the noise floor is so low that normal fan noise might be noticeable or distracting, such as recording situations where a microphone is used in close proximity to the unit.

350x OWNER’S MANUAL • 11

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Contents SWR CORONA, CA USA 350xImportant Safety Instructions Introduction 350X Rear Panel Features 350X Front Panel FeaturesUsing One Speaker Cabinet Connecting Your Speaker CabinetsUsing Two Speaker Cabinets 350x Getting StartedTurning The Unit On 350x Front Panel FeaturesGetting Sound Out Input JacksGain Control Active Input JackPreamp Clip LED Aural Enhancer350x Active Tone Control Section SubWave Activator SwitchSubWave Controls SubWave Level ControlMidrange Level Control Midrange ControlsMidrange Frequency Control Treble Control350x Rear Panel Features XLR Pad Control XLR Mode Switch Line/Direct/Direct + SubTuner Out XLR Ground/Lift SwitchEffects Loop for external effects devices Cooling Fan & Fan Mode Switch SubWave Activator FootswitchEffects Send Effects Receive350x Power Amplifier Minimum Impedance Ratings How Impedance Affects Power RatingsSpeaker Output Section Speaker Output Jacks 350x Power Delivery Capabilities Power RatingsSpeaker Fuse Rack Mounting Instructions Internal Feature Vacuum Tube ValveLine Fuse A/C or Mains Fuse Cord ReceptacleFEW Words Concerning Heat Suggested SettingsFinal Engineering Summary Reggae RockJazz SlapSWR

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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