Samson SM10 User Manual

10-Channel Rack Mount Line Mixer

Owner’s Manual

www.samsontech.com

Samson Technologies Corp. 278-B Duffy Ave Hicksville, NY 11801 www.samsontech.com

Important Safety Information

RISQUE DE CHOC ÉLECTRONIQUE -

AVIS

NE PAS OUVRIR

CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This lightning ﬂash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of non-insulated “dangerous voltage” within the product’s enclosure that may be of sufﬁcient magnitude to constitute a risk of electric shock.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance instructions in the literature accompanying the appliance.

If you want to dispose this product, do not mix it with general household waste. There is a separate collection system for used electronic products in accordance with legislation that requires proper treatment, recovery and recycling.

Private household in the 28 member states of the EU, in Switzerland and Norway may return their used electronic products free of charge to designated collection facilities or to a retailer (if you purchase a similar new one). For Countries not mentioned above, please contact your local authorities for a correct method of disposal. By doing so you will ensure that your disposed product undergoes the necessary treatment, recovery and recycling and thus prevent potential negative effects on the environment and human health.

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SM10 3

Important Safety Information

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. This apparatus shall not be exposed

to dripping or splashing liquid and no object ﬁlled with liquid, such as a vase, should be placed on the apparatus.

6. Clean only with a dry cloth.

7. Do not block any of the ventilation

openings. Install in accordance with the manufacturer's instructions.

8. Do not install near any heat sources

such as radiators, heat registers, stoves, or other apparatuses (including ampliﬁers) that produce heat.

9. Only use attachments/accessories

speciﬁed by the manufacturer.

10. Unplug this apparatus during lightning

storms or when not in use for long periods of time.

11. Do not override the intended purpose

of the polarized or grounding-type plug. A polarized plug has two blades, with one wider than the other. A groundingtype plug has two blades and a third grounding prong. The wide blade, or third prong, is provided for your safety. If the provided plug does not ﬁt your outlet, consult an electrician to replace the obsolete outlet.

12. Protect the power cord from being

walked on or pinched, particularly at the prongs, convenience receptacles, the point where they exit from the apparatus.

13. Use only with the cart stand, tripod

bracket, or table speciﬁed by the manufacture, or sold with the apparatus. When a cart is used, utilize caution when moving the cart/apparatus combination to avoid injury from tip-over.

14. Refer all servicing to qualiﬁed service

personnel. Servicing is required if the apparatus has been damaged in any way, such as power-supply cord or plug breakage, damage due to liquid or objects falling onto the apparatus, exposure to rain or moisture, or if the apparatus does not operate normally, or has been dropped.

15. POWER ON/OFF SWITCH: For products

with a power switch, the power switch DOES NOT break the connection from the mains.

16. MAINS DISCONNECT: The plug should

remain readily operable. For rackmount or installation where plug is not accessible, an all-pole mains switch with a contact separation of at least 3mm in each pole shall be incorporated into the electrical installation of the rack or building.

17. FOR UNITS EQUIPPED WITH

EXTERNALLY ACCESSIBLE FUSE RECEPTACLE: Replace fuse with same type and rating only.

18. MULTIPLE-INPUT VOLTAGE: This

equipment may require the use of a different line cord, attachment plug, or both, depending on the available power source at installation. Connect this equipment only to the power source indicated on the equipment rear panel. To reduce the risk of ﬁre or electric shock, refer servicing to qualiﬁed service personnel or equivalent.

Introduction

The Samson SM10 rack mount mixer is a versatile tool for many sound applications. The SM10 mixer features eight independent stereo line input channels, and includes two channels with XLR microphone preamps. There are also two additional line inputs with stereo 1/4” jacks and level controls that can be used to daisy-chain SM10 mixers together. The SM10 features a multitude of signal routing options, with Monitor (Pre-Fade), EFX (Post-Fade), and Mix B sends on Channels 1-8. The Master section of the SM10 features expanded monitoring capabilities. The headphone output and meter bridge can be selected to monitor the MON out, EFX out, Mix B, or Main output. There is also an extra MON output with level control for quick patching to the MON send without having to go to the rear panel. Built into a single space 19-inch rack with internal power supply, the SM10 is reliable for any installation and rugged enough to be used on the road.

In these pages, you’ll ﬁnd a detailed description of the features of the SM10 rack mount mixer, as well as a guide to its control panel, instructions for setup and use, and full speciﬁcations. You’ll also ﬁnd a warranty card enclosed. Please don’t forget to ﬁll it out and mail it in so that you can receive online technical support, and so that we can send you updated information about this and other Samson products in the future. Also, be sure to check out our website (www.samsontech.com) for information about our full product line.

With proper care, your SM10 will operate trouble-free for many years. We recommend you record your serial number in the space provided below for future reference.

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Serial number: ____________________________________________

Date of purchase: __________________________________________

Should your unit ever require servicing, a Return Authorization number (RA) must be obtained before shipping your unit to Samson. Without this number, the unit will not be accepted. Please call Samson at 1-800-3SAMSON (1-800-372-6766) for an RA number prior to shipping your unit. Please retain the original packing materials and if possible, return the unit in the original carton and packing materials. If you purchased your Samson product outside the United States, please contact your local distributor for warranty information and service.

SM10 5

Features

The Samson SM10 rack mount mixer is a comprehensive all-inone solution for ﬁxed installation, live sound, on-stage monitoring, keyboard submixer and recording applications. Here are some of its main features:

• 10 input channels – Two Mic/Line plus ten stereo line

• Low noise, discrete microphone pre-ampliﬁers with 48-Volt

phantom power.

• Versatile signal routing via Main Mix, Mix B, Mon, EFX bus

outputs, as well as mono output.

• Balance controls for each channel that allow you to blend the

relative levels of stereo inputs.

• Two auxiliary sends can be used to route signals to external

effects, or to create a separate mix for on-stage monitors.

• Front-panel headphone and mono output jack with dedicated

level controls

• Flexible headphone and six-segment LED meter source control

allows you to monitor the MON, EFX, MIX B and MAIN MIX

• Line Input Level switch for +4 dBu or -10 dBV line level input

signals.

• Electronically balanced main stereo XLR and 1/4” line outputs.

• Center detents for all input controls, for use in low-light

situations such as live performance.

• Single 19” rack-mount metal chassis with internal power supply,

easily integrated into any existing system.

• Quality built and rugged construction ensure reliable performance

from venue to venue and session to session.

Controls and Functions

1. VOLUME – This knob controls the volume of

channel inputs and is used to continuously adjust the loudness of the various signals being blended together at the Main Outputs. There is a detent at the 12 o’clock position of the knob, which indicates unity gain.

Moving the knob counterclockwise from the

12 o’clock position causes the signal to be attenuated. Moving it clockwise from the 12 o’clock position causes the signal to be boosted.

For best signal-to-noise ratio, all Volume controls for channels carrying signal

should generally be kept at or near the 12 o’clock position. Channels that are unused should have their Volume controls kept fully counterclockwise at their minimum level.

2. BALANCE – When the both inputs of a channel are connected, the left

input signal is automatically panned hard left and the right input signal is automatically panned hard right. In this case, the Balance knob controls the relative levels of the paired input signals. When the knob is placed at its center detent position, both signals are at equal strength. When moved left of center, left input signal remains at the same strength but the right input signal is attenuated. When the knob is moved right of center, the left input signal remains at the same strength but the right input signal is attenuated.

When only the left input is connected, the Balance knob functions as a

constant level Pan control, allowing you to continuously place the incoming signal anywhere in the left-right stereo ﬁeld.

3. MON (Monitor) Send – The MON send knob allows you to route the signal to the

MON outputs. The MON send is pre-fader so the signal is unaffected by the position of the channel Volume control. These sends are usually used to create a separate mix for a monitor system. When the MON send knob is at the 12 o’clock center detent position, the signal is routed with unity.

4. EFX (Effects) Send – The EFX send knob allows you to route the signal to

the EFX outputs. The EFX send is post-fader so the level of the signal is determined by the position of the channel Volume control. These sends are usually used to route signal to outboard effects devices. When the EFX send knob is at the 12 o’clock center detent position, the signal is routed with unity.

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SM10 7

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Controls and Functions

5. MUTE/CLIP/MIX B – This switch will ﬂash RED when the channel

input signal peaks. To reduce distortion, turn the Volume control counterclockwise until the clip indicator does not light during normal use. When the switch is depressed the channel’s signal path is interrupted to the main mix and the channel is assigned to the MIX B bus.

6. LINE IN VOLUME – The SM10 features two additional stereo Line

Inputs (channels 9 and 10) which can be used to return the outputs of the an external effects processor, or to connect the output of any stereo line level device to the main mix.

7. MON Send – The MON signals (see #3) from input channels

1-8 are mixed together and sent to the MON Outputs. Use the MON send control to set the amount of signal being sent to the MON Output.

8. EFX SEND – The EFX signals (see #4) from input channels 1-8 are mixed

together and sent to the EFX Output. Use the EFX level controls to set the amount of signal being sent to EFX Output.

Controls and Functions

9. MAIN OUTPUT LEVEL – This knob

determines the ﬁnal output signal level. Signals from all channels are routed here just before leaving the SM10 via its left and right Main Output jacks. The 12 o’clock center detent position of the control indicates unity gain (no level attenuation or boost).

10. SOURCE Select Switch – The Source

select Switch allows you to conﬁgure the Output Meter (see #11) and Headphone output (see #15) to monitor the MON, EFX, MIX B and Main Output buses.

11. Output Meter – This six-segment meter shows the continuous output level

of the Main Mix, MON, EFX, or MIX B, depending on the position of the SOURCE select switch (see #10). For optimum signal-to-noise ratio, adjust all levels so that program material is usually at or around 0 VU, with occasional, but not steady, excursions to the red segments.

12. MON OUT LEVEL – The SM10 provides a second MON output connector

carrying a mono signal of the MON mix. The MON OUT LEVEL control knob is used to set the volume of the MON OUT jack.

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13. MON OUT Jack – The left and right MON mix are summed together to a

monaural signal and sent out this connector. The signal at the MON OUT jack follows the MON OUT LEVEL (see #12) control knob.

14. HEADPHONE LEVEL – This knob sets the level of the signal sent to the

HEADPHONE jack. To avoid possible damage to connected headphones, always turn this all the way off (to the fully counterclockwise position) before plugging in a pair of headphones—then raise the level slowly while listening.

15. HEADPHONE Jack – Connect standard stereo headphones to this jack (via a

1/4” TRS plug) for monitoring of the MON, EFX, MIX B and Main Output buses, depending on the position of the SOURCE select switch (see #10).

SM10 9

Input and Output Connections

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16. Mic/Line Inputs (channels 1

and 2) - Use these Combo

XLR plus 1/4” jacks to connect a microphone or line level signal to channels 1 and 2. The XLR inputs provide 48-volt phantom power for use with condenser microphones.

17. Line Inputs - Use these balanced 1/4” jacks to connect line level sources such

as synthesizers, drum machines, MP3 players, or effects processors to any of the 8 channels. When connecting monophonic (as opposed to stereo) signal sources, use the left inputs; the Balance control for that channel will then act as a constant level pan control.

18. Input Level Switch – Use this switch to independently set the sensitivity of

channels 1-8 line level inputs. When the switch is in the up position the input are set to +4dBu. When the switch is depressed the input is set to

-10dBv.

19. Stereo LINE IN (channels 9-10) – Two stereo 1/4” jacks for

connecting stereo line level sources like those from the outputs of effects processors. These inputs can also be used to link multiple SM10’s or to add the output from another mixer to the SM10 without taking up channel line inputs.

20. MON Output – The signals present at the MON stereo 1/4”

output are sent from the MON send, which are fed from the input channels’ MON control knobs. In a live sound situation this can be used to create a monitor mix by connecting the MON output to a power amp and monitor speaker.

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21. EFX Output – The stereo 1/4” EFX Output is used to send a

signal to an external signal processor such as a delay or reverb. The signal present at the EFX Output is sent from the EFX bus, which is fed from the input channel’s EFX control knob.

Input and Output Connections

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22. MAIN OUTPUTS 1/4” Jacks - In live

performance applications, these outputs can be used to connect the SM10 to a power amp and speakers. In recording applications, these outputs are used to connect to a stereo device such as computer sound card, MP3, or hard disk recorder. The signals at the Main Outputs jacks follow the Main Output level controls.

23. MAIN OUTPUTS XLR Jacks - In live performance applications, these male XLR

outputs can be used to connect the SM10 to a power amp and speakers. In recording applications, these outputs can be used to connect to a stereo device such as computer sound card, MP3, or hard disk recorder. The signal at the Main Outputs jacks follow the Main Output level control.

24. Power Switch – Use this switch to turn the

SM10 on and off. To avoid potential damage to your speakers, turn the SM10 on before you turn on any connected power amps—and turn it off after the power amps are turned off. The switch should be in the off position when connecting the SM10 to the mains.

25. AC Inlet – Connect the supplied IEC cable here.

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SM10 11

SM10 Quick Start

The following section explains the basic operation of the SM10.

CONNECTING MICROPHONES AND INSTRUMENTS

1. Remove all packing materials (save them in case of need for future service)

and decide where the unit is to be physically placed—it can be mounted in any standard 19” rack (requiring one rack space), or used on a tabletop.

2. Before connecting mics or instruments, make sure that the power to all your

systems components, including the SM10, are turned off. Also, make sure that the Main Output control knob is turned all the way down.

3. Connect the cable(s) to your microphone(s) and instrument(s), and insert the

other end of the cable(s) ﬁrmly into the appropriate input(s) on the SM10.

NOTE: SETTING THE INPUT GAIN – When connecting a microphone to channels 1 and 2, it’s a good idea to start with the Volume control turned all the way down. Slowly raise the Volume control until you see the CLIP LED turn on. Now, back the Volume control down so that the MUTE/CLIP LED only lights for a short time during the loudest input the channel will experience.

4. Switch on the power of any peripheral devices, and then power up the SM10.

NOTE: It is important to remember the Golden Rule of audio … “LAST ON, FIRST OFF”. Translated, this means that when turning on your system, you should always turn your power ampliﬁers or powered monitors on LAST, and when turning your system off, turn your power amps off FIRST. This helps avoid any loud pops caused by rush current at power up, which can sometimes damage loudspeakers.

5. Turn on your power amp or powered monitors and raise the level control to the

manufacturers’ recommended operating level.

6. Set the Main Output control of the SM10 master section to the 12 o’clock

(unity) position.

7. While speaking into the mic (or playing the instrument), adjust the channel

Volume control so that the “0” LED of the MAIN section peak level meter lights only occasionally.

SM10 Quick Start

SENDING AN INDEPENDENT MIX TO THE MONITOR SPEAKERS

The SM10’s MON auxiliary send can be

used to feed a separate set of ampliﬁers and loudspeakers for stage monitors. This lets you build one stereo mix for the main mix, or ampliﬁers and speakers facing the audience, and another stereo mix for the ampliﬁers and monitor speakers facing the musicians.

1. Raise the MON controls for the channels that you wish to hear from the

monitor speakers.

NOTE: MON controls are “pre-fader sends,” which means they are not affected by the Volume control level settings of each channel. This allows you to create a mix for the monitors that is independent of the main left and right mix.

2. Raise the MON SEND control to

adjust the level of the mixed signal from the channel MON controls until the desired level is reached at the rear panel MON Output jack.

3. For added monitoring ﬂexibility, the

front panel MON Output (mono) can be connected to a powered monitor speaker. Slowly raise the MON Level control until the desired level is reached.

4. The MON mix can be monitored via headphones, by setting the PHONES

SOURCE switch to MON.

NOTE: Listening to high volume levels through headphones for even a short time may damage your hearing and/or your headphones. Always turn the HEADPHONE LEVEL control all the way counterclockwise before connecting your headphones. Slowly raise the HEADPHONE LEVEL until a comfortable listening level is reached. Noise over 85 dB can cause gradual hearing loss. Learn to establish a safe listening level.

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SM10 Quick Start

USING AN EXTERNAL EFFECT

If you prefer to use an external device for

effects processing, you can easily connect the unit using the SM10 EFX bus. Follow the simple steps below to interface your processor:

1. Connect the EFX OUTPUT to the input of the external effect processor.

2. Connect the outputs of the effects processor to channel 9 stereo line input.

3. Set the EFX SEND control to the 12 o’clock position.

4. Raise the EFX knobs for the channels to which you want the external effect to

be applied.

5. Set the input level of the external

effect so that the sound is not distorted and so that the effect’s input meter does not indicate a clipped signal.

6. Use the channel 9 Volume control

to adjust the level of the effects processed by the external effects device.

7. The EFX bus can be monitored via headphones, by setting the PHONES

SOURCE switch to EFX.

SM10 System Setup

SIGNAL FLOW

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SIGNAL FLOW

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Speciﬁcations

Inputs

Microphone XLR balanced (2) Line 1/4” TRS balanced (Ch 1-8),

1/4” stereo (Ch 9-10) Input Impedance Mic 1.5K Ohms Line 23K Ohms (+4 dBu, Ch 1-8) 40K Ohms (-10 dBV, Ch 1-8) 20K Ohms (Ch 9-10) Maximum Gain Mic 65 dB Line 39 dB Line Operating Level +4 dBu / -10 dBV selectable Maximum Input Level (1 kHz, ±3 dB) Mic Input -4 dBu Line Input +28 dBu Equivalent Input Noise - 123 dBu unweighted

Outputs

Main Outputs Type 1/4” TRS balanced (2), XLR (2) Output Impedance 200 Ohms Main Out Gain Range -∞ to +15 dB Max output level +22 dBu MON (Pre Fade Out) 1/4” impedance balanced mono output

(front panel), Stereo MON (rear panel) EFX (Post Fade Out) 1/4” unbalanced Output Impedance 100 Ohms Headphone 1/4” TRS Stereo Output (600 Ohm load) 100 mW

System

Frequency Response 10 Hz – 23 kHz ±1 dB Signal-to-noise ratio > 90 dB typical THD <0.01% typical Crosstalk (1 kHz) -70 dB between input channels

-70 dB between input/output channels Phantom Power 48 Volts DC Power Requirements 100-120/120-240 VAC ~ 50-60Hz 50W Dimensions 19” L x 8.25” W x 1.75” H

484mm L x 210mm W x 44.5mm H Weight 6 lbs / 2.8 kg

Consignes de sécurité importantes

ATTENTION

RISQUE D’ÉLECTROCUTION —

NE PAS OUVRIR

ATTENTION : POUR RÉDUIRE LES RISQUES D’ÉLECTROCUTION, VEILLEZ À NE PAS OUVRIR LE BOÎTIER. CONFIEZ LES RÉPARATIONS UNIQUEMENT À UN TECHNICIEN QUALIFIÉ.

Le symbole de l’éclair prévient l’utilisateur de la présence de tensions “dangereuses” et non isolées dans l’appareil, d’une amplitude sufﬁsante pour présenter un risque d’électrocution.

Le symbole du point d’exclamation prévient l’utilisateur de la présence d’instructions importantes sur le fonctionnement et la maintenance de ce produit dans le mode d’emploi fourni.

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Pour mettre ce produit au rebut, ne le mélangez pas aux ordures ménagères. Il existe un système de collecte séparée pour les produits électroniques usagés, conformément à la législation qui prévoit le traitement, la récupération et le recyclage corrects.

Les ménages dans les 28 états membres de l'UE, en Suisse et en Norvège peuvent mettre au rebut leurs produits électroniques usagés gratuitement auprès d'installations de collecte agréées ou auprès d'un détaillant (si vous achetez un produit neuf similaire).

Pour les pays non mentionnés ci-dessus, veuillez contacter les autorités locales pour connaitre la méthode de traitement appropriée.

Ce faisant, vous vous assurerez que votre produit subit le traitement, la récupération et le recyclage nécessaires et prévenez ainsi les effets négatifs potentiels sur l'environnement et la santé humaine.

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Informations Importantes sur votre sécurité

1. Veuillez lire toutes les instructions.

2. Conservez ces instructions.

3. Respectez les mises en garde.

4. Suivez les instructions.

5. L’appareil ne doit pas être exposé

aux projections liquides. Ne placez aucun objet contenant un liquide sur l’appareil (vase, verre, etc.).

6. Nettoyez avec un tissu sec.

7. Veillez à ne pas obstruer les fentes de

ventilation. Installez l’appareil selon les instructions du fabricant.

8. N’installez pas près d’une source de

chaleur (radiateurs, etc.), ou de tout équipement générant de la chaleur (ampliﬁcateurs de puissance).

9. Utilisez uniquement les ﬁxations et

accessoires spéciﬁés par le fabricant.

10. Déconnectez l’appareil du secteur en

présence d’orage ou lors de périodes d’inutilisation prolongées.

11. Ne retirez pas la terre du cordon

secteur ou de la prise murale. Les ﬁches canadiennes avec polarisation (avec une lame plus large) ne doivent pas être modiﬁées. Si votre prise murale ne correspond pas au modèle fourni, consultez votre électricien.

12. Protégez le cordon secteur contre tous

les dommages possibles (pincement, tension, torsion, etc.). Veillez à ce que le cordon secteur soit libre, en particulier à sa sortie du boîtier.

13. Utilisez uniquement le support, le pied,

ou la table spéciﬁés par le fabricant, ou vendus avec l’appareil. Lorsque vous utilisez un chariot, procédez avec vigilance lorsque vous vous déplacez pour éviter toute blessure aux personnes et tout dommage aux équipements.

14. Consultez un service de réparation

qualiﬁé pour tout dysfonctionnement (dommage sur le cordon secteur, baisse de performances, exposition à la pluie, projection liquide dans l’appareil, introduction d’un objet dans le boîtier, etc.).

15. INTERRUPTEUR MARCHE/ARRÊT :

les produits équipés d’un interrupteur marche/arrêt ne garantissent pas une isolation totale entre l’appareil et le secteur.

16. ISOLATION DU SECTEUR : La ﬁche

secteur doit rester accessible à tout moment. Dans le cas d’une installation en Rack ou d’une installation ne permettant pas l’accès à la ﬁche secteur, un interrupteur multipolaire avec ouverture/fermeture par contacts (espacés d’au moins 3 mm) sur chaque élément de l’alimentation secteur (toutes les phases, neutre et terre) doit être incorporé au câblage du Rack ou du bâtiment.

17. APPAREILS ÉQUIPÉS D’UN FUSIBLE

ACCESSIBLE PAR L’EXTÉRIEUR : Remplacez le fusible uniquement par un autre exactement identique.

18. ÉQUIPEMENTS MULTI-TENSION:

Selon le pays d’utilisation, cet appareil nécessite un cordon secteur avec des ﬁches adaptées au format local et aux normes locales. Connectez cet appareil uniquement à une source secteur correspondant à la description située en face arrière. Pour réduire les risques d’incendie et d’électrocution, conﬁez toutes les réparations à un personnel qualiﬁé.

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