Front Panel

Mute

Pad

Bass Intensifier

 

 

 

Compression

Boost

Level

Cutoff

Threshold

Ratio

Attack

Release

 

 

 

 

Comp

-2

 

 

+5

 

10 : 1

-4

 

-5

2 : 1

Position

 

 

 

 

 

 

ON

 

 

 

 

 

-8

 

MIN

MAX

80

200

-10

+10

1 : 1

20 : 1

MIN

MAX

MIN

MAX

-18

MIN

MAX

-10 dB

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

PRE EQ

 

 

 

 

POST EQ

 

 

 

 

 

 

 

 

 

Preamp

Gain

 

Aural

 

Bass

 

 

 

 

Equalization 1

 

 

 

 

 

Effects

Left

Right

 

 

 

Clip

 

Enhancer

 

 

Mid 1

 

 

 

Mid 2

 

Mid 3

 

 

Treble

 

Blend

 

Volume

 

 

 

Input

 

 

 

 

 

80

95

 

 

450

530

 

2.3k

2.8k

 

 

 

 

 

 

 

 

Select

 

 

 

 

45

 

 

120

250

 

 

650

1.3k

 

3.4k

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

35

-15

+15

180

180

-15

+15

1k

1k -15

+15

5k

 

 

 

 

 

SM -1500

 

 

 

 

 

 

-15

 

DRY

WET

MIN

 

 

 

MIN

MAX

MIN

MAX

+15

 

 

 

 

 

 

 

 

 

-15

+15

MAX

Power

 

 

 

 

Equalization 2

 

 

 

 

1 / 2

 

Mid 1

 

Mid 2

 

Mid 3

 

 

80

95

450

530

2.3k

2.8k

 

 

EQ

 

45

120

250

650

1.3k

 

3.4k

Select

 

 

 

 

 

 

 

 

 

 

35 -15

+15 180

180 -15

+15 1k

1k -15

+15

5k

 

1 + 2

 

 

 

 

 

 

Footswitch

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Freq

Level

 

 

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A.INPUTS—Plug into either (or both) of the input jacks using a shielded instrument cable. Press Input Select to choose either input 1 or 2 to be the active jack as indicated by the LEDs.

The rear panel In jack {LL} can be used instead of input 1 on the front panel; useful for connecting wireless receivers. NOTE: If both of these jacks are used at the same time, the front panel jack overrides the rear panel jack.

TIP:To overdrive the first tube stage of the preamp, connect an external preamp inline between your instrument and the input. For the best pure-tube overdrive sound, boost the out- put of your external preamp, then dial in a clean Gain setting using the PreAmp Clip LED {P}. (The Preamp Clip LED does not monitor the very first preamp tube stage to allow you to isolate it and overdrive it independent of the Gain controlled stage of the preamp.)

B.MUTE—Press in to disable all output from the unit, except Tuner Out {KK}; useful when switching or tuning instruments or during breaks.

C.p ad— Press in to reduce input sensitivity by –10dB; useful for cleaner response from high-output instruments.

D.BASS INTENSIFIER—Press in to engage the Bass Intensifier circuit as indicated by the LED. The Bass Intensifier boosts a chosen set of low frequencies combined with a smooth, fast-acting compressor, providing radical boosts without overdriving the amplifier; useful for heavier sections of a tune. Bass Intensifier can also be engaged from the footswitch.

E.LEVEL—Adjusts the strength of the Bass Intensifier effect.

F.CUTOFF—Limits the frequency range that the Bass Intensifier operates in from below 80Hz to below 200Hz.

G.COMPRESSION—Press in to engage the Compressor circuit as indicated by the LED. Compression moderates signal level as it peaks, according to the way you have controls {H, I, K and L} set.

H.t hreshold— Sets the signal level at which Compression engages. Turn fully counter-clockwise for maximum sensitivity. Note that Gain {Q} level and instrument output are what actu- ally trigger the Compressor.

I.RATIO—Adjusts how much compression is applied once it has been triggered. For example, at 1:1 there is no compres- sion. With a ratio of 2:1, an increase of 10 dB will be needed to increase the output signal level by 5 dB over the threshold. At 10:1, an increase of 10 dB will only increase the output signal level by 1 dB. (Many consider ratios of 10:1 and greater to be hard limiting.)

J.COMP POSITION—Press to alternate the position of the Compressor circuit in the signal path from before most of the tone shaping controls to after, as indicated by the LEDs. See Block Diagram on page 11.

K.ATTACK—Adjusts the rate that Compression engages once the the signal level rises above the threshold; useful for fine tuning the transparency of the Compressor effect.

L.r elease— Adjusts the rate that Compression disengages once the signal level drops below the threshold; useful for fine tuning the transparency of the Compressor effect.

M.METER—Four LEDs indicate the actual amount of gain reduc- tion in dB.



Page 7
Image 7
SWR Sound SM-1500 manual Front Panel

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.