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Related Manuals for SWR SM-900
Summary of Contents for SWR SM-900
- Page 1 SM-900 USER GUIDE SWR • CORONA, CA • USA...
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Page 2: Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS CAUTION: TO REDUCE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER OR BACK. NO USER-SERVICEABLE PARTS INSIDE. PLEASE REFER TO A QUALIFIED SERVICE TECHNICIAN. A. Read Instructions: All safety and operation instructions should be read before the product is operated. B. - Page 3 SM-900 USER GUIDE INTRODUCTION The SM-900 is truly the “State of SWR’s Art” in bass amplification electronics. The SM-900 is only slightly deeper and heavier than the SM-500, yet delivers twice the power and includes new fea- tures such as our very flexible tone section. Along with shelving-type Bass and Treble controls, the equalization section consists of two independent 3-band semi-parametric EQs.
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Page 4: Input Impedance
SIGNAL TO NOISE RATIO: –75 dB (< 8 millivolts typical) EQUIVALENT INPUT NOISE: 8.9 microvolts DISTORTION: Power Amplifiers (Effects Return jack “in”): 0.03% THD I.M. Distortion: 0.06 % System Distortion (gain & master volume full, Aural Enhancer at min., tone controls flat): 0.4 % 2 • SM-900 USER GUIDE... -
Page 5: Thermal Protection
TUBE COMPLEMENT: One (1) specially-selected 12AX7 vacuum tube (valve). CHASSIS MATERIAL: All aluminum for light weight and purity. Steel-reinforced rack corners. ASSEMBLY: Virtually every step of the assembly procedure of the SM-900 is done by hand, in- house, at SWR Sound in Sun Valley, California, USA. -
Page 6: Gain Control
1 volt RMS. Basses with really “hot” pickups may be more compatible with the Active input. Let your ears be the judge. If you are using a KEYBOARD or BASS PEDAL, etc., with the SM-900, we have found the best choice to be the Active input. - Page 7 TONE CONTROLS AND EQUALIZATION: A BASIC PRIMER The flexibility of the tone and EQ sections of the SM-900 is one of the most elaborate we have developed. They have the ability to correct “dead” and “hot” spots that may be inherent in your...
- Page 8 If you should require more than the 7 dB offered for any one band in the EQ 1+2 mode, set two bands at the same frequency and boost or cut both of them for a total of 15 dB. 6 • SM-900 USER GUIDE...
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Page 9: Bass And Treble Controls
NO cut or boost is being heard on that control. 3-BAND SEMI-PARAMETRIC EQUALIZERS There are two 3-band semi-parametric EQs in the SM-900. They can be thought of as adjustable bass, midrange and treble knobs. The bottom 3 are designated “EQ 1” and the top three and des- ignated “EQ 2.”... - Page 10 TONE CHARTS AND SUGGESTIONS 8 • SM-900 USER GUIDE...
- Page 11 SM-900 USER GUIDE • 9...
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Page 12: Crossover Frequency
The following two pages include suggested settings to get you acquainted with the limitless vari- ety of tones possible with the SM-900. By setting EQ 1 to the “Acoustic 360” and EQ 2 to the “Grand Piano” settings, for example, you can switch back and forth with the footswitch and see the variety of diverse sounds available to you on the SM-900. -
Page 13: Rear Panel Features
They do NOT affect the level of the record XLR output in the “line” position. This configura- tion allows the user added flexibility when using the SM-900 in Stereo mode. For example: You are using the left channel for your monitoring and the right channel is across the stage next to the drummer. - Page 14 “dry.” This allows the user to utilize effects without sacrificing a solid bottom end. To bi-amp with the SM-900, run patch cables from the Crossover Outs to each of the Stereo 12 • SM-900 USER GUIDE...
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Page 15: Effects Loop
Now adjust the Effects Blend control for the mix you desire. To use the stereo Effects Loop, run a patch cable from the “Send” jack of the SM-900 to the mono input of your stereo effects unit (either the left or right input—check the effects unit and/or its owners manual). -
Page 16: Speaker Output Jacks
Minimum speaker load in the stereo mode is 2 ohms per side. When used in Bridge Mode, the SM-900 will deliver 440 watts into 16 ohms, 650 watts into 8 ohms and 900 watts into 4 ohm loads. Please make sure the speakers you use in this mode can handle the power. - Page 17 If you notice the fan is still engaged after playing through your SM-900, let it run for a couple of minutes to cool itself off. This will help extend the life of the internal components.
- Page 18 The SM-900 should be mounted as close to the bottom of the rack case as possible. The height of the rubber feet was chosen so that when you slide the unit in the bottom of the rack case, the rack mounting holes on the front panel should line up with the mounting holes of the rack rail.
- Page 19 Note: When the power amp assign switch is set to the Bridge/Mono position, only the center Speakon output jack may be used. The SM-900 delivers a minimum of 900 Watts RMS into a 4 ohm load, and 650 Watts RMS into an 8 ohm load.
- Page 20 8 ohms per side. Although the minimum impedance that the SM-900 is designed to drive safely in the Stereo Mode is 2 ohms (per side), 4 ohms per side or greater is recommended.
- Page 21 800W 120 VOLTS 50/60 HZ 960 WATTS Speaker 1 Midrange/Tweeters (High Frequencies) SM-900 Bi-Amp Operation Diagram RIGHT SPEAKER R SPKR FUSE FUSE 10 AMP Note: An effects unit may be inserted between the X-Over Outputs and the Effects Return Jacks. For instance, it is a popular practice to insert a...
- Page 22 10 AMP BRIDGE MONO 800W 120 VOLTS 50/60 HZ 960 WATTS Speaker 1 SM-900 Stereo Effects Patching Diagram Shielded Patch Cable from Left Effects Out of Effects Unit to Left Stereo Effects Return RIGHT SPEAKER R SPKR FUSE FUSE 10 AMP...
- Page 23 Service Centers, and the latest SWR news, interviews, and more, check out our website: swrsound.com SM-900 OWNER’S MANUAL • Part # 0066577000 • 09/03 8860 E Chaparral Rd, Suite 100 Scottsdale, AZ 85250-2618 USA PHONE: (480) 596-9690 FAX: (480) 367-5262 EMAIL: custserve@fenderusa.com...