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Specifications

Power Amp Section:

Normal

Limit

Rated Output Power (per channel)
(1% THD @ 1 kHz stereo, 4 ohm)

275 watt

250 watt Min

Maximum Voltage Gain

Amp In to Speaker Out (@ 1 kHz)

27.5 dB

28 dB ±

Total Harmonic Distortion (20 Hz to 20 kHz with 30 kHz LPF)

0.02%

0.1% Max

Frequency Response (±3 dB)

DC ~ 130 kHz

20 ~ 50 kHz

Signal To Noise Ratio (with 30 kHz LPF)

112 dB

105 dB Min

Residual Noise ((with 30 kHz LPF)

-84 dBu

-80 dBu Max

Idle Current across Emitter Resistor)

6 mA

15 mA Max

DC Offset Voltage

+5 mV

±30 mV Max

General:

Dimensions (W x D x H)

482 x 280 x 178 mm
19 x 11 x 7 in

Weight

34.8 lb • 15.8 kg

Power Requirements

115 V ac 60 Hz for UL and CSA Version

230/240 V ac 50/60 Hz for BSI and Central Europe Version

100 V ac 50/60 Hz for Japan Version

Power Consumption

982 w

Содержание SD8

Страница 1: ...OWNERS MANUAL P O W E R E D MIXER S D 8...

Страница 2: ...elength for Samson Technologies Corp Copyright 1997 Samson Technologies Corp Printed March 1997 Samson Technologies Corp 575 Underhill Blvd P O Box 9031 Syosset NY 11791 9031 Phone 1 800 3 SAMSON 1 80...

Страница 3: ...al Suggestions 11 Setting Up and Using the SD8 12 Setting the Correct Gain Structure 13 Suggested Performance Application 15 Grounding Techniques 16 Using Equalization 17 Using The Aux Sends and Retur...

Страница 4: ...ons such as churches or conference rooms In these pages we ll begin with an overview of the main SD8 features followed by a guided tour of the front and rear panels Then we ll describe the various inp...

Страница 5: ...ignal Independent three band equalization for each channel enabling you to shape the sound of your input signal sources In addition a ten band graphic master equalizer allows you to tune the output of...

Страница 6: ...lifier A rear panel preamplifier output allows you to connect the SD8 to external power amplifiers when higher power ratings are required and or when additional amplifier feeds are necessary A built i...

Страница 7: ...N AUX1 MON LINE MIC PEAK CHANNEL 5 10 O HIGH 15 O 15 LEVEL 10 O MID 12 O 12 LOW 15 O 15 DSP AUX2 L R PAN AUX1 MON LINE MIC PEAK CHANNEL 4 10 O HIGH 15 O 15 LEVEL 10 O MID 12 O 12 LOW 15 O 15 DSP AUX2...

Страница 8: ...ee the Using Aux Sends and Returns section on page 19 of this manual 3 DSP Aux 2 violet This knob allows you to send signal from one or more channels to the SD8 s internal Zoom Digital Signal Processo...

Страница 9: ...to the left output and more signal is sent to the right output making the sound appear right of center To route a signal hard left or right place the pan knob either fully counterclockwise or fully c...

Страница 10: ...y thump The rightmost LED labeled Power lights steadily green whenever the SD8 is powered on and fades slowly when the unit is powered off 3 Ten Band Graphic Master EQ These sliders allow you to add 1...

Страница 11: ...attenuated when fully counterclockwise the signal is attenuated infinitely in other words there is no Monitor signal sent For more information see the Using the Aux Sends and Returns section on page 1...

Страница 12: ...ct injection DI box to determine whether or not it requires 48 volts phantom power Samson cannot assume responsibility if you damage a mic or DI box by incorrectly applying phantom power from the SD8...

Страница 13: ...on page 8 It is normally used to connect the unit to an external monitor mixer amplifier speaker system so that the performers can receive an onstage monitor mix independent of the house mix See the U...

Страница 14: ...el line inputs will accept either balanced or unbalanced connectors The diagram below shows how balanced 1 4 TRS Tip Ring Sleeve connectors should be wired Unbalanced cables use standard 1 4 phone con...

Страница 15: ...ection from the tip of the SD8 speaker jack goes to the hot input of your loudspeaker and that the sleeve of the SD8 speaker jack is connected to the ground input of your loudspeaker 3 Next make the s...

Страница 16: ...y are sending completely wet processed signal with no dry unprocessed signal mixed in f If condenser microphones are connected to the SD8 turn on the Phantom switch Finally turn on the SD8 s main powe...

Страница 17: ...portant to maximize the amount of signal being sent to them via the SD8 Aux sends As with the internal DSP the idea is to drive these devices as hot as possible short of overloading them and then to u...

Страница 18: ...EVEL 10 O MID 12 O 12 LOW 15 O 15 DSP AUX2 L R PAN AUX1 MON LINE MIC PEAK CHANNEL 6 10 O HIGH 15 O 15 LEVEL 10 O MID 12 O 12 LOW 15 O 15 DSP AUX2 L R PAN AUX1 MON LINE MIC PEAK CHANNEL 5 10 O HIGH 15...

Страница 19: ...mounted audio devices and are experiencing hum or buzz there s a simple test to determine the source of the problem while keeping all devices powered on and connected with audio cabling physically re...

Страница 20: ...d The high and low EQ controls employ what is known as a shelving curve where frequencies either above or below the specified area are affected while the mid frequency control employs what is known as...

Страница 21: ...m an overloaded input signal The key is to get the signal right in the first place by using correct gain structure and mic placement Although the specific EQ you will apply to a channel signal is very...

Страница 22: ...m outboard devices either as a stereo pair or dual monophonically many popular effects processors provide a single mono input but a stereo output Because the SD8 is a stereo device Aux return 1 is aut...

Страница 23: ...e DSP wet signal to be added to the overall mix When set to the fully clockwise 10 position the wet signal is boosted by 10 dB Wet signal is returning at unity gain that is with no boost or attenuatio...

Страница 24: ...Effect 1 standard is 1 8 seconds specially designed to Larger Effect values increase the reverb time from enhance percussion 0 6 seconds Effect 2 to 3 4 seconds Effect 16 10 Drums a reverb specially A...

Страница 25: ...dB Aux Return to Pre Out 10 dB Tape In to Pre Out 14 dB Mic to Aux Send 1 Trim Min Max 20 64 dB Mic to Aux Send 2 Trim Min Max 30 74 dB Mic to Monitor Out Trim Min Max 30 74 dB Residual Noise at Pre O...

Страница 26: ...e 3 dB DC 130 kHz 20 50 kHz Signal To Noise Ratio with 30 kHz LPF 112 dB 105 dB Min Residual Noise with 30 kHz LPF 84 dBu 80 dBu Max Idle Current across Emitter Resistor 6 mA 15 mA Max DC Offset Volta...

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