SHOW SPA-10 Mixer Preamplifier User Manual

MIXERPREAMPLIFIER
User’s Manual SPA-10

IMPORTANT!

Please read this manual carefully before operating this unit for the first time.
All rights reserved to SEIKAKU. AII features and content might be changed without prior notice. Any photocopy, translation, or reproduction of part of this catalogue without written permission is forbidden. Copyright © 2009 SEIKAKU GROUP

SAFETYRELATEDSYMBOLS

CAUTION
RISKOFELECTRICSHOCK  DO NOT OPEN
The symbol is used to indicate that some hazardous live terminals are involved within this apparatus, even under the normal operating conditions.
The symbol is used in the service documentation to indicate that specific component shall be only replaced by the component specified in that Documentation for safety reasons.
Protective grounding terminal.
~ Alternating current /voltage.
Hazardous live terminal .
ON: Denotes the apparatus turns on.
OFF: Denotes the apparatus turns off, bec- ause of using the single pole switch, be sure to unplug the AC power to prevent any electric shock before you proceed your service.
WARNING: Describes precautions that should be observed to prevent the danger of injury or death to the user.
Disposing of this product should not be placed in municipal waste and should be separate collection.
CAUTION: Describes precautions that should be observed to prevent danger of the apparatus.

• Power Supply
  Ensure the source voltage matches the voltage of the power supply before turning ON the apparatus.
  Unplug this apparatus during lightning storms or when unused for long periods of time.

• External Connection
  The external wiring connected to the output hazardous live terminals requires installation by an instructed person, or the use of ready- made leads or cords.

• Do not Remove any Cover
  There are maybe some areas with high voltages inside, to reduce the risk of electric shock, do not remove any cover if the power supply is connected.
  The cover should be removed by the qualified personnel only. No user serviceable parts inside.

• Fuse
  To prevent a fire, make sure to use fuses with specified standard (current, voltage, type). Donot use a different fuse or short circuit the fuse holder. Before replacing the fuse, turn OFF the apparatus and disconnected the power source.

• Protective Grounding
  Make sure to connect the protective grounding to prevent any electric shock before turning ON the apparatus. Never cut off the internal or external pro- tective grounding wire or disconnect the wiring of protective grounding terminal.

• Operating Conditions
  This apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on this apparatus.

To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.
Do not use this apparatus near water. Install in accordance with the manufacture-r’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including am- plifiers) that produce heat. Do not block any ventilation openings. No naked flame sources, such as lighted candles, should be placed on the apparatus.

IMPORTANT SAFETY INSTRUCTIONS

• Read these instructions.

• Follow all instructions.

• Keep these instructions.

• Heed all warnings.

• Only use attachments/accessories spec- ified by the manufacturer.

• Power Cord and Plug Do not defeat the safety purpose of the polarized or grounding type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replace- ment of the obsolete outlet. Protect the power cord from being walk- ed on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.

• Cleaning
  When the apparatus needs a cleaning, you can blow off dust from the apparatus with  a blower or clean with rag etc. Don’t use solvents such as benzol, alcohol, or other fluids with very strong volatility and flammability for cleaning the apparatus body. Clean only with dry cloth.

• Servicing
  Refer all servicing to qualified personnel. To reduce the risk of electric shock, do not perform any servicing other than that contained in the operating instructions unless you are qualified to do so . Servicing is required when the apparatus has been damaged in any way , such as power supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. The mains plug is used as the disconnect device, the disconnect device shall remain readily operable.

INTRODUCTION

Thank you very much for expressing your confidence in our products by purchasing SPA-10 mixer preamplifer. The SPA- 10 mixer preamplifer is a professional signal preamplifier processor dedicated to audio signal amplification, mixing, and adding effects and applications. It is a very powerful device offering simplicity and quality.
The SPA-10 mixer preamplifer is very easy to operate but we advise you to go through each section of this manual carefully. In this way you will get the best out of SPA-10 mixer preamplifer.
Features:
The SPA-10 mixer preamplifer is designed for professional application with following features:

• Applications: AV presenter, music band, bar, restaurant and hotel, etc
• Standard 2U 19″space rack, Simple & useful functional design
  *5 MIC/LINE combined mono input channels
• XLR-1/4″ TRS combo input
• Ultra-low noise balanced input circuitry
• LINE/MIC input signals switchable (LINE IN /MIC IN/ MIC IN with phantom power)
• 60mm high-quality Fader channel volume control for each channel
• Priority function for CHI input
• 2 stereo input channels
  *RCA jack inputs
• AUX2 input channel includes a 3.5mm stereo input jack for connecting portable multi-media devices (MP3,l-pod,|-phone etc)
  *3-BAND EQ
• RECORD output with RCA jacks
  *# 1 1/4″ phones output with volume control
• mono output with balanced XLR socket
   stereo output with balanced XLR socket
  #8-segment LED level meter
• ECHO effect for CH3~CHS5 inputs, with knob adjust variation. (option)
• Supports DC24V input of power supply (option)
• Supports standard USB port to charge for portable music players or devices (MP3,I-pod,I-phone,etc)

CONTROL ELEMENTS

FRONT PANEL

1. CHI ~CH5
   Input level for mic/line to 5.

2. AUX | ~ AUX 2 Input level for AUX | to 2.

3. EQ
   3 bands EQ only for STEREO, MONO and HEADPHONE outputs.
   The center frequencies are 80 Hz (LOW), 2.5 kHz (MID) et 12 kHz (HIGH)

4. VOLUME – PHONES
   Output volume for the headphone

5. MONO – OUT
   Output volume of MONO OUT.
   Must be set to minimum when the power is switched on.

6. DISPLAY L, R
   LED display for STEREO OUT level.
   The red light indicates a clipping status. Adjust the level untill the LED switches off.

7. STEREO – OUT
   Output volume of the STEREO OUT.
   Must be set to minimum when the power is switched on.

8. 0N/OFF INDICATOR
   On/Off switch. The LED lights when power is on.

9. AUX 2
   Mini jack 3.5 mm input for pocket MP3 player
   The front and the rear panel AUX 2 sockets are connected in parallel and cannot be used simultaneously.

10. UsB
    USB socket used to power an iPod player. It delivers 5V – 700mA.
    There is no data transmission from this socket, only power supply.

11. PHONES
    Output jack for headphone.

12. 0N/OFF
    On/Off switch. To operate with output levels at minimum

13. ECHO EFFECT CONTROL
    This is the ECHO effect control over CH3-CHS. Its range goes from o(off)to 10(max.).
    REAR PANEL

14. AC INPUT
    Power cord socket including the power fuse.
    Before connection, check the power supply compatibility Use similar type of fuse for replacement.

15. LINE
    / MIC / Phantom
    3 positions selector :
    – Line In: 1/4″ TRS, balanced.
    – Dynamic microphone: XLR, balanced.
    – Electret microphone with + 15 V phantom power: XLR, balanced.

16. STEREO OUT
    Balanced XLR outputs.

17. MONO OUT
    Balanced XLR output.

18. REC OUT
    Unbalanced RCA stereo output. To be used with external processing devices or power amplifiers. There is no EQ and level adjustment on this output.

19. AUX IN
    Unbalanced RCA stereo input. To be used with sound sources like CD, DVD, MP3, etc. The front and the rear panel AUX 2 sockets are connected in parallel and cannot be used simultaneously.

20. MIC/LINE IN
    Balanced mic/line inputs equipped with combo XLR / 6.35 mm Jack sockets.

21. CHI PRIORITY
    The muting circuitry activates in the presence of signal from Mic |.This potentiometer determines the mixing level of Mic or line input signals with signals of priority channels, adjusting it to minimum shall cut off all other inputs when signal is presence in priority channel (Mic ). Whereas setting it to max shall allow free mix of all signals including priority input.
    Some application shall not require this feature, such as in the hall of prayer, thereby to bypass the circuitry, adjust the level to the maximum.

22. VOLTAGE SELECTOR
    There are two kinds of voltage for selection. When the voltage is selected, the corresponding fuse shall also be changed with accurate rating and type.

23. DC SOCKET
    SPA-10 mixer pre-amplifier can also operate using 24V DC power supply. When both the AC and DC source is connected, is shall operate sing AC main whereas the DC supply shall be only consumed whenever the former failed.

APPLICATIONS

CONFERENCE, PRESENTATION

BAR, HOTEL, RESTAURANT, SHOP

LIVE MUSIC

BLOCK DIAGRAM

Some Final Tips on Wiring Configuration
‘You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.

TECHNICAL SPECIFICATIONS

STEREO/AUX in channels

| RCA input| RCA
---|---|---
Frequency response| +1/-3dB at output +4dB sine 20Hz to 22KHz
Distortion(THD+N)| <0.1% at +4dB,22Hz~22KHz A-Weighted
Sensitivity| -20dBu
SNR| <-95dBr
Max. Input| +20dBu

Impedances

| Microphone Input| 1k Ohms
All Other Input| 10k Ohms or Greater
Rec Out| 1k Ohms
All Other Outputs| 120 Ohms
ECHO| Yes (olny for CH3 ~ CH5), with knob adjust variation
MIC1 priority| Off to -12dB
Main mix section| EQ| High| 15 dB @12 kHz
Mid| 12 dB @2.5 kHz
Low| 15 dB @80 Hz
MAX. Output| +26dBu Balanced; +21dBu un-Balanced
Fader range| Off to +10dB
Headphone level range| Off to +10dB
Hum & Noise| <-70dB @ 20Hz~22KHz,1 channel & MAIN level: max , the other :minimum
channel Crosstalk| <-75dB @0dB 20Hz~22KHz , MAIN level: max ,the other :minimum
USB Port| 5VDC 700mA(max) ( used to charge the MP3 player  I-phone  etc.)
Power supply| main voltage| 100-240V~ 50/60Hz Fuse :T500mA 250V
DC in 24V| 24V 1000mA
rated power consumption| 25W
Others| Dimensions (WHD)| 48388186mm
Net Weight| 2.85KG; 3.4KG with DC24V in

SEIKAKU TECHNICAL GROUP LIMITED
NO.I LANE 17, SEC.2, HAN SHI WEST ROAD, TAICHUNG 40151, TAIWAN
tel: 886-4-22313737
– fax: 886-4-22346757
www.show-pa.com
sekaku@sekaku.com

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