Speaker Guidelines

•  DO NOT connect a speaker load with a total imped- ance below the minimum rating of your amplifier to prevent damage to your equipment.

•  DO NOT connect speaker(s) with a total power han- dling capacity that is less than the power output rating of your amplifier to prevent damage to your equipment.

•   ALWAYS switch your system power OFF before con- necting or disconnecting speakers.

•  ONLY use unshielded speaker cable of 18 gauge or heavier (16 or 14 gauge) for speaker connections. Shielded instrument cable WILL NOT work and may damage your equipment.

•  ONLY connect one amplifier to each speaker load. Two amplifiers connected to a single load WILL NOT work and may damage your equipment.

Use the impedance and power ratings on your amplifier and speakers to determine if a particular combination of speakers is appropriate for your amplifier. NOTE: All SWR® bass speaker enclosures, as well as most others, will be connected in parallel (NOT series) when linked (daisy-chained) together. Therefore, these guidelines apply only to parallel speaker configurations.

The speaker illustration gives you the total imped- ance load calculations for various speaker impedance combinations (Ω=ohms). The ideal speaker load (total impedance) is equal to the minimum impedance

rating of your amplifier. Operating below the amp's minimum impedance rating can overheat your amplifier and cause damage. Operating above the amp's minimum impedance rating, while safe, reduces the amplifier’s maximum power output.

Something else to consider: You can obtain the same group total impedance load from different combinations of speaker impedances (see illustra-

tion). If each speaker in a group has the same imped- ance, each speaker will receive the same amount of power from your amplifier. However, if impedances are not all equal, the lowest impedance speakers will

get the most power. For example, if you connect an 8Ω and a 16Ω speaker to an amp output of 30 watts, the 8–ohm speaker will receive about 20 of those watts (and be twice as loud as the 16-ohm speaker). Take this into consideration when calculating power handling capacities and when positioning your bass speaker enclosures.

For an in-depth discussion of setup tips for amplifiers and speakers (including a look at impedance and power rating issues), visit the Support area of the SWR website at www.swrsound.com.

Compatible Speakers

1,500 watts is far more power than most bass speaker systems are equipped to handle, so use caution when using the bridged mode of this amplifier. It is recommended that you engage the compres- sor when using the bridged mode and, if you have any doubts about your speakers’ power-handling capabilities, check the owner’s manual and product specifications before operation.

Each side of the amplifier is capable of 750 watts @ 2 ohms, 450 watts

@4 ohms and 250 watts @ 8 ohms. Ensure that your speaker system has power-handling capabilities that match or exceed these power- handling specifications. Using two or more cabinets per side will optimize the amplifier's headroom and power, but remember that each additional speaker also reduces the total impedance (ohms) connected to the amp. For example, one 8-ohm Goliath III cabinet is rated to handle 700 watts; if you combine two of these cabinets, the combined power handling would be 1,400 watts, but the impedance would be lowered to 4 ohms (please see the “Speaker Guidelines” section of this manual for further information).

Minimum Speaker Ratings

The combined speaker impedance and wattage ratings at each out- put should be no lower than the following.

In Stereo, Dual-Mono, or Bi-Amp modes (per side):

•2 ohm 750W

•4 ohm 450W;

•8 ohm 250W

In Bridged mode:

 

 

•4 ohm 1500W

•8 ohm 900W

 

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SWR Sound SM-1500 Speaker Guidelines, Compatible Speakers, Minimum Speaker Ratings, Ohm 750W Ohm 450W, Ohm 1500W Ohm 900W
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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.
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