Topp Pro SPA12 User manual

Download

Page 1

SEIKAKU TECHNICAL GROUP

NF03570

PHFAA102-20110400029

-RS

SPA-12 _V1.0

SPA-12

0.04kg/1 NH00149 1:2 / NH00231 1:4

LIMITED

SH-201104005

APR.14.2011

Page 2

User's Manual

MIXER PREAMPLIFIER

Page 3

PROFESSIONAL MIXER PREAMPLIFIER

Whattodo

TROUBLE SHOOTING

Likely Cause

Speaker not connected to

Symptom

Verify that speaker is connected and that the circuit is on

active AC power

No sound

Switch on power and verify that power Led is on

*Re-seat the power cable at both ends;

*Substitute a known-good power cable

*Check fuse & replace with same type "spare fuse in holder"

Power not switched on

Speaker power cable is faulty

or improperly connected.

Blown fuse

come on

AC power but won't

connected to working

No sound, speaker is

*Check if the signal LED indicators are lit on

*Verify that the tape or CD is playing;

*Use headphones to verify that the instrument is actually sending

Signal source (mixer, Amp

instrument) is not sending

No sound

an audio signal

Speaker comes on

The EON does not supply phantom power. Switch to a dynamic

*Disconnect and re-seat signal cables;

*Replace suspected cable with a known-good cable

Faulty cables & connections

microphone, use a battery powered microphone (if possible),

use an external phantom power supply for condenser type

Microphone requires

phantom power

No sound with

to MIC /LINEinput

microphone connected

microphones.

*Reduce the output level of the source;

*Turn down the level controls on the speaker;

*Use additional EON speakers

Excessive input signal, trying

to exceed the capabilities of

the speakers

is lit most of the time

and veryloud,LIMIT light

Signal sounds distorted

for your mixer and adjust controls as needed;

*Make sure that the MIC / LINE switch is in the LINE(disengaged)

*Reduce the level settings at speaker, Review the Owner's Manual

*Input sensitivity(gain);

*Channel faders;

Improper gain structure

mixer controls are

at very low settings.

Lots of hiss in sound,

*Master faders;

equipment to drive your EON speakers.

*"lift" audio ground by using XLR/F to XLR/M adapter on one end

*Re-route audio cables away from AC power and lighting cables.

*Use the balanced outputs(if available)of your mixer or source

Improper A/Cgounding,

ground loops

Excessively long unbalanced

output to a balanced output.

*Use"DI"(direct injection) box to convert unbalanced equipment

cable run

Hum or Buzz

Reduce the INPUT level controls and increase the output level

of your source devices.

Improper system gain

structure

position;

INDEX

SAFETY RELATED SYMBOLS

WARNING

IMPORTANTSAFETY INSTRUCTION

INTRODUCTION

INSTALLATION & CONNECTION

CONTROL ELEMENTS

BLOCK DIAGRAM

TECHNICAL SPECIFICATION

TROUBLE SHOOTING

Page 4

PROFESSIONAL MIXER PREAMPLIFIER

Unplug this apparatus during lightning

storms or when unused for long periods

of time.

CAUTION

The external wiring connected to the output

External Connection

DO NOTOPEN

RISK OFELECTRIC SHOCK

The symbol is used to indicate that

hazardous live terminals requires installation

by an instructed person, or the use of ready-

made leads or cords.

some hazardous live terminals are

involved within this apparatus, even

under the normal operating conditions.

There are maybe some areas with high

Do not Remove any Cover

The symbol is used in the service

documentation to indicate that specific

voltages inside, to reduce the risk of electric

shock, do not remove any cover if the power

component shall be only replaced by

the component specified in that

supply is connected.

The cover should be removed by the qualified

Documentation for safety reasons.

Protective grounding terminal.

No user serviceable parts inside.

personnel only.

Alternating current /voltage.

To prevent a fire, make sure to use fuses

with specified standard (current, voltage,

type). Do not use a different fuse or short

circuit the fuse holder.

Before replacing the fuse, turn OFF the

apparatus and disconnected the power

Fuse

source.

Make sure to connect the protective

grounding to prevent any electric shock

Protective Grounding

before turning ON the apparatus.

Never cut off the internal or external pro-

tective grounding wire or disconnect the

wiring of protective grounding terminal.

This apparatus shall not be exposed to

dripping or splashing and that no objects

Operating Conditions

filled with liquids, such as vases, shall be

placed on this apparatus.

WARNING

Disposing of this product should

not be placed in municipal waste

Hazardous live terminal .

and should be separate collection.

SAFETY RELATED SYMBOLS

-82 dB @ 1KHz (CH level at max, EQ at MID, MAIN

1.4k Ohms

10k Ohms or Greater

120 Ohms

15 dB @12 kHz

12 dB @2.5 kHz

15 dB @80 Hz

-70dB@1kHz(Ch1-6); -68 dB @ 1KHz (CH7-12) level and other at min, SW at line)

0 dBu( 2dBu) Balanced(CH level

&MAIN & EQ at MID, other at min, sw at line)

0 dBu( 2dBu) Unbalanced, 1/4" Jacks(CH level

&MAIN & EQ at MID, other at min, sw at line)

+21 dBu Blanced/Unbalanced, 1/4" Jacks

-83dB @ 20Hz~22KHz (channel & MAIN level & EQ at MID, other at min, sw at line)

1500VAC at Test,Frequency 50/60Hz,Leakage Current:

ON: Denotes the apparatus turns on.

OFF: Denotes the apparatus turns off, bec-

5mA for 1minute

3000VAC at Test,Frequency 50/60Hz,Leakage Current:

ause of using the single pole switch, be sure

5mA for 1minute

to unplug the AC power to prevent any

electric shock before you proceed your

service.

WARNING: Describes precautions that

220~240VAC/110~120VAC ~ 50/60Hz or 24VDC

should be observed to prevent the danger

of injury or death to the user.

483*195*44mm

Net :2.9kg

CAUTION: Describes precautions that

should be observed to prevent danger of the

apparatus.

Ensure the source voltage matches the

Power Supply

voltage of the power supply before turning

ON the apparatus.

Microphone Input

All Other Input

All Other Outputs

Impedance

High

Mid

Low

Equalizer

Adjacent Input

Input to Output

Crosstalk

Line output

MIC output,MONO output

Main Mix Section

Max output

Noise (Bus noise)

Between Live+Negative IN/OUT

Terminal(Positive+Negative)

Between Live+Negative Earth

Dielectric Strength

Between Live+Negative Earth

(A Voltage of 500VDC)

Between Live+Negative IN/OUT

Insulation Resistance

Terminal(Positive+Negative)

(A Voltage of 500VDC)

Main voltage

Dimension (WxDxH)

Physical

Power supply

Weight

Page 5

(Unbalanced)

PROFESSIONAL MIXER PREAMPLIFIER

TECHNICAL SPECIFICATIONS

Electronically Balanced, Discrete Input Configuration

Microphone Input

Mono channels(CH1-CH6)

0.03% At 1kHz

20Hz to 22kHz, +/-2dBu

Frequency Response:

Distortion( THD&N)

-19dBu

-40dBu

Sensitivity

Max. Input

60dB CH MIC INPUT MONO OUT(Unbalanced)

50dB CH MIC INPUT REC OUT(Unbalanced)

60dB CH MIC INPUT MAIN OUT(XLR,balanced)

60dB CH MIC INPUT MIC OUT(Unbalanced)

Maximum Voltage Gain

103dB

SNR( Signal to Noise Rate )

+18V~+21V with switch control

Phantom power(Mic Pin2/Pin3 & Pin1)

Electronically Balanced

20Hz to 22kHz, +/-2dBu

Line Input

Frequency Response:

Input

0.03% At 1kHz 0dBu

Distortion( THD&N)

Sensitivity

Channels

20dB CH MIC INPUT MAIN OUT(XLR,balanced)

+21 dBu

Max. Input

10dB CH MIC INPUT REC OUT(Unbalanced)

Maximum Voltage Gain

20dB CH MIC INPUT MIC OUT(Unbalanced)

20dB CH MIC INPUT MONO OUT

Stereo channels(CH7/8-CH11/12)

Electronically balanced

20Hz to 22kHz, +/-2dBu

Line Input

Frequency Response:

0.03% At 1kHz +10dBu

Distortion( THD&N)

Sensitivity

0dB CH MIC INPUT REC OUT(Unbalanced)

10dB CH MIC INPUT MAIN OUT(XLR,balanced)

+21 dBu

Max. Input

Maximum Voltage Gain

4dB CH MIC INPUT MONO OUT

103dB

SNR( Signal to Noise Rate )

a blower or clean with rag etc.

Don't use solvents such as benzol, alcohol,

To reduce the risk of fire or electric shock,

do not expose this apparatus to rain or

or other fluids with very strong volatility and

flammability for cleaning the apparatus body.

Clean only with dry cloth.

moisture.

Do not use this apparatus near water.

Install in accordance with the manufacture-r's

Servicing

instructions. Do not install near any heat

sources such as radiators, heat registers,

stoves, or other apparatus (including am-

Refer all servicing to qualified personnel. To

reduce the risk of electric shock, do not

plifiers) that produce heat. Do not block

any ventilation openings.

perform any servicing other than that

contained in the operating instructions unless

you are qualified to do so .

No naked flame sources, such as lighted

candles, should be placed on the apparatus.

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

IMPORTANT SAFETY INSTRUCTIONS

Read these instructions.

Keep these instructions.

Follow all instructions.

normally, or has been dropped.

The mains plug is used as the disconnect device,

Only use attachments/accessories spec-

Heed all warnings.

the disconnect device shall remain readily

operable.

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,

where they exit from the apparatus.

convenience receptacles, and the point

Cleaning

When the apparatus needs a cleaning, you

can blow off dust from the apparatus with

Page 6

PROFESSIONAL MIXER PREAMPLIFIER

session

preamplifier

mixer preamplifier

INTRODUCTION

preamplifier

mixer pre amplifier. The is a professional compact preamplifier. You will get

smooth, accurate more natural and open sound from this apparatus, and it is really ideal

for gigs, recording and fixed PA installations.

Thank you very much for expressing your confidence in our products by purchasing this

pre amplifier

This 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 this .

mixer preamplifier

Features:

This is designed for professional application with following

features:

MONO channels:

6 COMBO inputs

MIC, MIC with Phantom power, LINE switch selector.

Low-distortion MIC pre-amp with high dynamic range, Balanced XLR and TRS input jacks.

Phantom power on each MIC input channel.

CH level control, SIGNAL LED to indicate input signal.

MIC 1 PRIORITY MUTE potentiometer

STEREO channels

CH7/8, CH9/10, CH11/12 RCA inputs

Input level control, input signal LED

STEREO LINE OUTPUT, balanced XLR for mixing LEFT/RIGHT output

MONO OUTPUT and level control

MIC OUT for monitoring CH1-CH6 output and MIC/LINE SWITCH control, LEVEL

to change output signal

STEREO REC OUT, RCA for mixing L/R OUT

3-BAND EQ for LOW, MID, HIGH

MASTER level controls the main output level, output signal LED

4-segment signal level meters, using master level to control LINE OUTPUT signal

to the AC socket;

GETTING STARTED

(1) Please check the AC voltage available in your country before connecting your

Also you should make sure that all input and output controls are turned down. This will

(2) Be sure that the main power switch is turned off before connecting to the AC socket.

preamplifier

the mixer BEFORE the power amplifier. Once you have finished your working

avoid damage to your speaker and avoid excessive noise.

(3) Before turn on the you should connect it to a power amplifier and turn on

preamplifier

you shall turn the mixer off AFTER the power amplifier.

(4) Before disconnecting the always turn off the power switch.

(5) Do not use solvents to clean your . A dry and clean cloth will be OK.

BLOCK DIAGRAM

Page 7

PROFESSIONAL MIXER PREAMPLIFIER

To Channel Insert

To Tape or FX Input

To Processor Input

To Channel Insert

Tip=Send Signal

Sleeve=Ground/Screen

To Processor Output

Ring=Return Signal

Ring=Return Signal (Connected together)

Tip=Signal

'Tapped' Connection Direct Output Lead

Tip

while maintaining the channel signal flow)

(Enables the Insert to be used as a Direct Output

Ring

Y-Stereo lead for insert Connection

(To be used when the processor does not employ a

single jack connection for the In/Out Connections)

Sleeve

Sleeve=Ground/Screen

MIXER

SPA-12

PREAMPLIFIER

OFF

SIG

+10

CLIP

L R

HIGHMIDLOWLOW

OUT OUTOUTOUT

+10

-10

+10

-10

+10

-10

OFF

volume knob is activated(at

CONTROL ELEMENTS

FRONT PANEL

MICINMICIN STEREOINSTEREO IN MIC EQ MONOMONO MASTERMASTER

LINE out has no output(this function is used for monitoring the

CH 6CH 6 CH 7/8CH 7/8 CH9/10CH 9/10 CH 11/12CH 11/12

2 3

CH 2CH 2 CH 3CH 3 CH4CH 4 CH 5CH 5

SIG SIG SIG SIG SIG SIG SIG SIG

CH 1

0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 10 0 100 10

SIG

The presence of the input signal is indicated at this LED. The strength of input signal shall determine

MIC channel 1 would have priority over other MIC input channels. This functions can be disabled by

1.MIC INPUT VOLUME KNOBS

adjusting the MIC priority knob at the back of the unit.

Adjustment of high gain may distort the original signal but too low may cause insufficient signal.

Trim each channel individually by fixing the main output to a certain level while turning off other

channels. Repeat this step and mark the level at each knob to avoid constant sound setup.

The rotary knobs for microphone inputs 1 to 6, 7/8, 9/10,11/12 are for adjustment of input signal

levels. In setup, adjust this gain to the optimum level according to the required output level.

Different channel may have different input source(ie:condenser or dynamic MIC, etc)

the brightness of the LED indicators.

2.SIGNAL LED

MIC / LINE SWITCHABLE

The button is used for selecting the MIC out or LINE out. When the

button is pressed, only CH1-CH6 have output from MIC out, MIC

3. MIC CONTROL KNOBMIC/LINE SWITCHABLE BUTTON&

present the MIC1 has no priority). The volume can be adjusted by rotating the knob to increase/

decrease the MIC output level. But

MIC out from CH1-CH6). When the button is released, all out have signal output except MIC out.

The pre amplifier is equipped with 3-band mid sweep EQ: LOW, MID & HIGH.

4. EQUALIZER

-LOW

This is the bass control. It is used to boost male voice, kick-drum or bass guitar. Your system

will sound much bigger than what it is. The gain range goes from -15dB to +15dB with a centre

frequency of 80Hz.

Page 8

PHPH PH PH PH PH

PROFESSIONAL MIXER PREAMPLIFIER

-MID

This is the midrange control. It provides -12dB to +12dB boost or cut with a centre frequency of

2.5kHz. It can affect most fundamental frequencies of all musical instruments and human voice.

This is the treble control. You can use it to get rid of high frequency of human voice. The gain

-HIGH

range goes from -15dB to +15dB with a centre frequency of 12kHz.

The level control knob sets the level of mono output signal, ranging from - to +10 dBu.

5.MONO

The LED meter indicate the level of input signal. Also a clipping indicator is supplied.

6.L/R LED METER

This knob is used for adjusting the LINE output level. To avoid over amplification, it's

recommended that this level be set properly.

It is advisable that the gain be set to minimum when powering the system as well as shutting

7.MASTER

down as this can eliminate sudden signal burst to your system.

8.POWER SWITCH &LED INDICATOR

This switch controls to power on/off the unit. When the unit is switched on, the LED will light up.

11 13

The unit is also provided a 24V DC backup power supply. Then the switch will control its on/off.

9.MOUNTING EAR

The mounting ear is adopted to easily install the unit on the rack.

REAR PANEL

This connector is meant for the connection of the supplied power cord. Please check the Voltage

accepted by the unit and the Voltage available from AC sockets before connecting the unit to the

10.AC INLET with FUSE HOLDER

Mains.

Ring=Right Signal

Ring

Tip

Sleeve

You can connect unbalanced equipment to balanced inputs and outputs. Simply follow these schematics.

Some Final Tips on Wiring Configuration

Tip=Left Signal

Sleeve=Ground/Screen

Strain Clamp

Use for Headphone

1/4" Stereo (TRS) Jack Plug

Tip

Sleeve

Tip=Signal

Sleeve=Ground/Screen

Strain Clamp

Use forMono Line In,Mono 1/4"Jack Plugs

1/4" Mono (TS) Jack Plug

Ring=Return Signal

Tip

Ring

Sleeve

Tip=Send Signal

Sleeve=Ground/Screen

Strain Clamp

Use forInserts Points

1/4" Stereo (TRS) Jack Plug

1=Ground/Screen

3=Cold(-)

2=Hot(+)

1=Ground/Screen

3=Cold(-)

2=Hot(+)

Use forMain output

(For unbalanceduse, leave pin3 unconnected)

Use forBalanced Mic Inputs

(For unbalanceduse, connect pin1 to 3)

(seen fromsoldering side)

3-pin XLR Line Socket

(seen fromsoldering side)

3-pin XLR Male Plug

Page 9

PROFESSIONAL MIXER PREAMPLIFIER

or conference room or hall of prayer.

The above schematic shows a simple setup for sound reinforcement in lecture theatre

Application Example (2)......Lecture Hall/ Conference Room

Note that the priority mute is set to minimum,thus allow free mix of signal from all channels.

This pre-amplifier can also operate using 24V DC power supply. When both the AC and DC

source is connected, is shall operate using AC main whereas the DC supply shall be only

consumed whenever the former failed.

11.DC POWER SUPPLY

12. LINE OUT

These stereo outputs are supplied with the XLR jacks, delivering signal output from all input

sources.

13.MONO OUT

This 1/4" phone jack is unbalanced TRS connector. It can be regarded as a sum output of the

left and right of MAIN MIX.

14.MIC OUT

This 1/4" phone jack is unbalanced TRS connector used for microphone output.

15.REC OUT(PHONE JACK)

These unbalanced RCA jacks are to be connected to recording media such as cassette tape

recorder.

Double-line inputs(RCA connectors for stereo music sources). The left and right channels are

combined, resulting in a single mono signal that can be directed to one or two the audio outputs.

16.LINE INPUTS

This switch is used for selecting the LINE, MIC or phantom power(+18~21V). Push the switch

to left, the input enters into LINE mode; put the switch in the middle position, the +18V phantom

power come into force; and push the switch to right, the input becomes MIC mode.

17.LINE/MIC/PHANTOM POWER SWITCH

These balanced/unbalanced combo connector are used for the MIC/LINE signal input.

18. MIC/LINE INPUTS

The muting circuitry activates in the presence of signal from Mic 1.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 1).

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.

19. MIC 1 PRIORITY POTENTIOMETER

Page 10

PROFESSIONAL MIXER PREAMPLIFIER

your mixer

output

effects

preamplifier and

INSTALLATION AND CONNECTION

. However, we advise you to read carefully the following section to be the real master

Ok, you have got this point and you are now in the position to successfully operate

of you own mixer. Not paying enough attention to the input signal level, to the routing of the

preamplifier

signal and the assignment of the signal will result in unwanted distortion, a corrupted signal or no

sound at all. So you should follow these procedures for every single channel:

including the preamplifier is turned off. Also, make sure all of input& controls of your

preamplifier are turned down. This will avoid damage to your speakers and avoid excessive

1. Be connecting mics or instruments, make sure that the power of all your systems components

noise.

preamplifierSet the output level of your or the connected power amplifier properly

preamplifier

Note: the power amplifier or powered monitors shall be turned on after

2. Properly connect all external devices such as mics, mixers, speakers, processor.

turned off before .

3.Now, turn on the power of any peripheral devices, then power up the mixer.

5. Set HI, MID and LOW EQ controls on middle position.

SPEAKER

MONITOR

SELECTOR

PAGING

ALL

ZONE

MAS

MASTER

1010

TREBLE

BASS

ECHO

this way you will maintain good headroom and ideal dynamic range.

6. While speaking into the mic(or playing the instrument), adjust the channel Level control in

ZONE

PEAK

SD/USB

RPT

REC

-VOL-

+VOL+

AUXAUX

INPUT

7. You can shape the tone of each channel by adjusting the equalizer controls as desired.

I .

LEVEL

MAS

SD/MMC

USB

MP3

P.A.

-E

MPA-

Application Example (1)......Paging System

MONO OUT

The above schematic illustrates a setup for a basic uninterrupted paging system.

Note that the priority mute level potentiometer is adjusted to the maximum to allow the

mute feature to be fully active. This level canbe adjusted mid way or so if it is to allow a paging

to be made with background music audible at lower volume.

Other equipments such as amplifier changeover, back up batteries, etc are not shown, which

may be required according to the building design requirements.

Page 11

MONITOR SPEAKER

POWER AMPLIFIER

PROFESSIONAL MIXER PREAMPLIFIER

CONNECTION

POWER AMPLIFIER

PH PH PH PH PH

RECORDER DAT or TAPE

In unbalanced system, only one conductor carries the useful signal while the other being the

ground. Cables run in a distance may act as an antenna picking up radiations from ac sources,

Significant Difference of Unbalanced / Balanced Connections

or from dimmers as well as other noises. Since there is no out of phase signals in the cabling,

the noise signals shall superimpose with useful audio signal. As the signal level is rather small

which could not diminish the effects of radiations, they would be amplified as a lot of signal,

thereby hum, etc is heard together with audio signal, this could be disastrous if the cable is run

in a longer distance which cross with other cabling like dimmer system, etc.

Noise may appear in balanced system but at a much lower magnitude as compared to unbalanced

system. Microphones which generate amplitude in millivolts requires a better signal carrying.

Method, ie, balanced system. Signal produced are out phase with each other and when reaching

the op-amp, one conductor shall be amplifier positively while the other inverted. Noise which

do not have polarityshall be cancelledat the op-amp output. Thereby the useful signal is amplified

The understanding of how this works can be easily illustrated in the diagram below.

twice while the noise is subdued.

The Proper Cabling - Ground Looping

It is important that the mains power is connected to your equipment with earth and the power

syst m has a proper earthing. When hum exists, it is possibly due to poor grounding connection

of your system. There should be only one ground point in the entire system.

Pin 1 of XLR source equipment should be connected whereas at the destination, this pin is dis-

mantled. This shall eliminate grounding loop due to connections of signal ground and power

ground. A looped cable resembles an antenna picking up hum and other electromagnetic radi-

ations. Although earthed equipment may cause mains hum, disconnecting signal screen is a

preferred choice as it has resistance than earth ground..