SM-1500 Bass Amplifier

SWR Sound manual SM-1500 Bass Amplifier

Congratulations on your purchase of the SWR® SM-1500™ bass amplifier!

The SM-1500 builds on the tradition of innovation estab- lished by SWR founder Steve W. Rabe in 1984. In response to the advice and suggestions from the top L.A. recording bassists of the day, who wanted their live sound to be every bit as great as what they heard in studio playback monitors, Rabe developed an entirely new concept for bass instrument amplification; and the “SWR Sound” was born.

The PB-200™ was the first tube preamp/solid state power hybrid bass amp and featured the now classic SWR pream- plifier and Aural Enhancer™ circuitry. It was a product that started a revolution in bass amplification and offered crystal- clear, high-fidelity tone in live performance and recording situations.

The next leap in SWR’s evolution came in 1985, with the introduction of the now legendary SM-400™ amplifier. This was the first true stereo bass amp with a stereo effects loop and inputs for both passive and active instruments. The now industry standard 4x10 Goliath, the first full range speaker enclosure for bass that featured a high frequency tweeter, fol- lowed in 1987.

In 1991, our never-ending quest for more power and profes- sional features led to the creation of the SM-900™; one of the most requested bass amps by both concert promoters and backline companies worldwide. In 1993, the SM-400 was upgraded to the SM-400S™ and further refinements and improvements in the platform led to the SM-500™ in 1999.

True to SWR tradition, the SM-1500 is an innovative product that is the result of decades of research and design experi- ence, coupled with direct input from the world’s greatest recording and touring bassists. In the SM-1500, we have com- bined the extensive feature set from our SM family of ampli- fiers; including stereo and bi-amp capabilities, with a stag- gering amount of power: 750 watts per side in dual mono or stereo operation, or 1500 watts @ 4 ohms bridged to mono.

In addition, we have added our popular Bass Intensifier™ circuit; (a boost circuit great for soloing); and a tube-driven compressor, which can be engaged before or after the EQ section of the amp. The SM-1500 is simply a remarkable piece of engineering as well as an incredibly powerful and versatile tool for the serious bass player.

We are confident you will enjoy your SM-1500 for many years to come and we thank you for “Stepping Up” to SWR.

Your new SM-1500 Professional Bass Amplifier offers the perfor- mance, power and SWR® tone that professional bassists of every playing style demand:

•Twin power amps with three modes of operation

•Bridge (mono) mode—1,500 watts @ 4-ohms

•Stereo mode—750‑watts @ 2-ohms (per side)

•Bi-Amp mode—with adjustable crossover frequency

•Tube preamp fueled by a 12AX7 dual triode tube

•Two front panel inputs plus one rear panel input with input select switch to accommodate multiple bass guitar setups

•World renowned SWR® Aural Enhancer tone shaping

•World-class Compression with Comp Position selection

•Four Footswitch selectable features

•Bass Intensifier for maximum impact

•Boost to accent solos

•Three Semi-Parametric Equalizer configurations—choose from two independent 3-band Eq's or combine them into one 6-band Eq

•Stereo/mono Effects Loop with Effects Blend control

•Traditional Bass/Treble tone controls

•Speakon® and 1/4" speaker outputs

•Balanced XLR output with Line, Comp Output and tube Direct modes, plus Level control, Phase and Ground Lift switches

SM-1500 specifications

The SWR Sound SM-1500 is a powerful and versatile bass amplifier that has gained popularity among both amateur and professional musicians. Known for its robust build and high fidelity sound, the SM-1500 is designed to meet the demands of live performances and studio recordings alike.

One of the standout features of the SM-1500 is its impressive power output. With a robust 1500 watts of power, this amplifier is capable of driving even the most demanding speaker cabinets. This ensures that musicians can achieve the necessary volume levels without compromising on sound quality. The amp's power capabilities make it suitable for a wide range of performance venues, from intimate clubs to large concert halls.

The SM-1500 utilizes advanced technology to produce a clear and punchy sound. Equipped with a comprehensive EQ section, this amplifier allows users to tailor their tone precisely. The four-band EQ includes adjustable controls for low, mid, mid-high, and presence frequencies. This flexibility enables musicians to shape their sound, whether they’re aiming for a punchy slap bass tone or a smooth, warm sound.

In addition to its power and EQ capabilities, the SM-1500 features an onboard compressor. This technology helps to smooth out dynamic range, ensuring that both soft and loud notes are balanced while maintaining clarity and articulation. The built-in limiter also protects the amplifier and speakers from potential damage due to signal clipping, which is essential during high-energy performances.

Portability is another significant aspect of the SM-1500. Despite its powerful output, it is designed with a relatively lightweight and compact chassis, making it easy to transport. This is a crucial factor for touring musicians who need reliable equipment that doesn't add excessive weight to their gear load.

The SM-1500 also includes multiple input options, accommodating both passive and active bass guitars. This versatility ensures compatibility with various instruments, providing musicians with the freedom to explore different sounds and styles.

In conclusion, the SWR Sound SM-1500 is a formidable bass amplifier that combines power, precision, and portability. Its advanced technology, user-friendly features, and flexible sound shaping options make it a top choice for bassists looking to elevate their sound in any performance setting. Whether in the studio or on stage, the SM-1500 is built to deliver an exceptional auditory experience.