Topp Music Gear TMA250-4, TMA500-4 User Manual

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Page 1

SEIKAKU TECHNICAL GROUP LIMITED

MAR.21.2011

A3 A4 A5

-RS

TMA250-4/500-4 TOPP PRO_V1.0

TMA250-4/500-4

0.032KG/1

NH00149 1:1

NPD-TO-1011005

TOPP PRO

PHFOA102-20091100017

NF03552

Page 2

TMA250-4

TMA250-4/500-4

FOUR CHANNELS POWER AMPLIFIER

CLIP

LIMIT

OP.

(dB)

CH1

POWER

OFF

PWRON

(dB)

CH2

(dB)

CH3

(dB)

CH4

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

CLIP

LIMIT

OP.

BRDG

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

BRDG

TMA 250-4

250W 4 Professional Amplifier

TMA500-4

TMA250-4 TMA500-4

CLIP

LIMIT

OP.

(dB)

CH1

POWER

OFF

PWRON

(dB)

CH2

(dB)

CH3

(dB)

CH4

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

CLIP

LIMIT

OP.

BRDG

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

BRDG

TMA 500-4

500W 4 Professional Amplifier

NF03552-1.0

Page 3

TMA250-4 TMA500-4

TMA250-4

TMA500-4

Page 4

TMA250-4

10. ...................................................................................................................GUARANTEE

9.TECHNICAL SPECIFICATIONS...........................................................................................

8.BLOCK DIAGRAM...........................................................................................................

7.CAUTION FOR APPLICATION............................................................................................

6.APPLICATION...................................................................................................................

5.INSTALLATION................................................................................................................

4.CONTROLELEMENTS ........................................................................................................................ .....

2.FEATURES...................................................................................................................... ................

1.INTRODUCTION ..........................................................................................................................................

3.USEFULL DATA...............................................................................................................

TMA500-4

TMA250-4

TMA500-4

11.NOTES........................................................................................................................... 14

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TMA 250-4

The TMA 250-4/500-4 Four Channels Power Amplifier is designed for professional use and provides unparalleled

quality. It Includes soft start, signal limit, two variable-speed-low-noise fans and a LED meter display. Each channel is

equipped with independent protective circuitry against open circuit, short circuit, mismatched loads and overheat.

It includes four independent channels with separate power supply. Furthermore, every channel has also a main

LED that becomes green for power-on indicator and green for muting or protection, another red LED that shows

true amplifier clipping and a yellow one for the limit stage. The high-quality components and the carefully designed

circuits ensure excellent audio performance and an extremely linear frequency response, giving crystal-clear sound

in the high range and an up-front, full-bodied bottom end. This amplifier guarantees total reliability and a trouble-

free use even in the most demanding conditions. We believe the TMA20-4/500-4 not only look great, but provide

a perfect performance, what you get is unprecedented performance at an incredibly attractive price.

Innovative design and high stability power amplifier

Fan-cooled AB class high power amplifier in 19", 2U size

4 independent channels with separate protection system

DC, infrasonic, overheat & short circuit protection

Smart-designed protection system for auto re-operation after fault

Parallel-input: channel 1 to channel 2, channel 3 to channel 4

Allow selection of Stereo, Bridge or parallel operation

Ultra low-noise and hum High-pass filter , allow selection of flat, 35 Hz or 75Hz, protect speakers and prevent speaker transformer

saturation with minimal effect on program material.

DIP switch control for clip limit, high-pass filter, bridge-mono selections

AUTO variable- speed-low-noise fans ensure high reliability even under demanding conditions.

Detachable Euroblock: " Barrier strip" input connectors.

Rugged amplifier in a strong, compact chassis

TMA500-4

TMA250-4

TMA500-4

Page 6

CONTROL ELEMENTS

TMA250-4

1- Power Switch

It switches on / off TMA 250-4 or TMA-500-4 main power.

2- Power LED

This LED lights up when the amplifier is powered on

3- Input Level Indicator Display

There are three high accurate LED indicators, which shows the level of the input signal. When the respective channel's output signal distortion exceeds 0.5%, the red LED (clip) indicator lights up. it will warn you that the level of the input signal is too high and may cause distortion, please attenuate the level of the input signal.

4- Protection LED

This green LED indicator lights up when the amplifier is powered ON, indicating that the soft-start protection system is working. No sound is output during soft-start up. if one of the protection systems is activated during normal use, this indicator lights up and no sound is output. The speakers system is actually disconnected from the amplifier outputs when this indicator lights up. The protection systems are activated when overheating occurs or a DC voltage is corrected, the protection systems deactivate automatically, this indicator goes out, and normal amplifier operation is resumed.

5- Output Limiter LED

Set the clip limit switch at "ON" position, the yellow LED lights up when the unit is limiting the output signal.

6- Level Control

This pot provides smooth level changes control.

7- Fan

The unit is equipped with two fans, which can accelerate the flow of air to lower the temperature inside unit. The inside temperature determines the fan speed, which controls the inside air flowing speed.

8- Bridge Mode LED Indicator

When you operate the unit in bridge mode, the LED indicator lights up .

9- Parallel Mode LED Indicator

When you operate the unit power amplifier in parallel mode, the LED indicator lights up

34 52

4.1

The Front Panel

TMA500-4

CLIP

LIMIT

OP.

(dB)

CH1

POWER

OFF

PWRON

(dB)

CH2

(dB)

CH3

(dB)

CH4

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

CLIP

LIMIT

OP.

BRDG

CLIP

-10dB

-20dB

-10dB

-20dB

LEVEL PAR LEVEL

BRDG

TMA 250-4

250W 4 Professional Amplifier

TECHNICAL SPECIFICATION

TMA250-4

Output Power 20Hz 20kHz @0.1%THD , stereo Mode 8 ohms per channel

4 ohms per channel

Bridge Mono Mode 8 ohms, 1kHz, 0.1% THD

Distortion (SMPTE-IM) Frequency Response Damping Factor, 1kHz, 0.1%THD(EIAJ) Signal to Noise, 20Hz-20kHz Voltage Gain Input sensitivity @ 4 ohms Input clipping Input impedance Controls

Indicators

TMA 250-4

Model

<0.05%

20Hz- 20kHz 1dB, -3dB point: 10Hz- 60kHz

>300@8 ohms

90dB 40 ( 32dB) 1Vrms 10 Vrms (+22dB) 10Kohms unbalanced, 20 Kohms balanced Front: AC Switch, Ch1 - Ch4 Gain Knobs Rear: MODE SWITCHS

Power - On: Blue LED

Protection: Green LED LIMITER : Yellow LED Clip: Red LED

Parallel-input: Yellow LED Bridge: Yellow LED Level: Green LED (-20 and -10dB)

Connectors, each channel

Input: Terminal Block Output: Screw-terminal Barrier Block

Power supply

cooling Load protection

Dimensions

Net weight

Continuously variable- speed fan, front - to - rear air flow

On / Off muting, overheat & short circuit protection

220-240 ( 110-120) Vac 50-60 Hz

19" ( 48.3 cm) rack mounting, 3.5" ( 8.9 cm) tall ( 2 rack spaces),

15.9" ( 40.3 cm) deep ( rack mounting to rear support ears) 17Kg

250W 4(EIAJ)

220W 4(RMS)

500W 2(EIAJ)

420W 2(RMS)

145W 4(RMS) 180W 4(EIAJ)

TMA500-4

TMA 500-4

500W 4(EIAJ)

400W 4(RMS)

1000W 2(EIAJ)

780W 2(RMS)

260W 4(RMS) 300W 4(EIAJ)

19Kg

100dB

Page 7

CONTROL ELEMENTS

TMA250-4

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4.2 The Rear Panel

10- INPUT Terminal

This unit is provided with balanced terminals, which are used to connect the input signal. Channel 1

and channel 3

are used in bridge and parallel mode.

11- Mode Selector

You can choose the right function and output you need via the mode selector switch. In order to make you acquire

these settings, now let me introduce the dip switch.

This switch is made up of 10 small dip switches, these small dip switches from1 to 5 control one channel, these rest ones (6-10 ) control the other channel, ok, you can choose the right mode setting you need via these small

dip switches. Take the dip switch of channel 1 and channel 2 for example. Channel 3 and channel 4 are the same as channel 1 and channel 2

STEREO MODE

12345678910

- Output Mode Selector

This unit provides three output modes: stereo, bridge and parallel. Here are some details:

turn these small dip switches of 4, 5, 6, 7 up to the top, then channel 1 and channel 2 are in stereoStereo mode:

mode;

Parallel mode: turn these small dip switches of 4, 5, 6, to the top, and turn the small dip switch of 7 down, then channel 1 and channel 2 are in parallel mode.

Bridge mode: turn these small dip switch of 7 up to the top, then channel 1 and channel 2 are in bridge mode.

PARALLEL MODE

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BRIDGE MODE

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8910

Please refer to chapter 5 for the connection of loads in detain.

12345678910

BREAKER

CH1

CH2

CH3

CH4

INPUTS

CH1MODESWITCHES CH2

CH3MODESWITCHES CH4

OUTPUTS

MODESWITCH SETTINGS

FILTERS

35HzFILTER

FILTEROFF

35HzFILTER

FILTERON

75HzFILTER

FILTERON

67 10

CLIPLIMIT

STEREOMODE

OFFONOFF

6789

678910

SWITCHSETTINGS

TOBRIDGECHANNEL PAIRS SET INPUT SWITCHES AS SHOWN.USETHE LOWER NUMBERED CHANNEL'S INPUT ANDGAINCONTROL. CONNECT SPEAKER AS SHOWN.

CH1ANDCH2 CH3ANDCH4

BRIDGEABLE CHANNELPAIRS:

1234567

8910

BRIDGEMONO

CH3

CH4

BRIDGE MONO

BRIDGE

MONO

CH1

CH2

OUTPUTS

678910

PARALLELMODE

MADEIN CHINA

110-120V50/60Hz 220-240V50/60Hz

TMA 250-4

110-120V~11A

220-240V~6A

RATEDPOWER

CONSUMPTION2200W

ACINPUT

S/N

TMA500-4

BLOCK DIAGRAM

TMA250-4

TMA500-4

Page 8

CONTROL ELEMENTS

TMA250-4

12- Output Terminal

You can output the powered signal by the specific output connectors according to the actual application circumstance.

Caution: turn off the unit before connecting the output connectors so as to avoid any electric shock!

13- Breaker

This switch works as fuse for protecting the unit from damage. When the unit is overloaded or the temperature inside the unit is too high, this push-button will spring up and break the power supply. The power supply will be restored with pushing this switch again.

14- AC-Inlet

This standard IEC receptacle is supplied to allow to connect your TMA 250-4/500-4 to mains via the supplied power cord.

- function selector

Clip limit : set these small dip switches of 1(ON) and 10(ON) at "ON" position , then the clip limit of channel 1

and channel 2 has been working; once the output level is reach or exceed the level that is predetermined by the

threshold setting selected, it may result in the undesirable distortion .in order to avoid the distortion, the clip begins; if the dip switch are set at "OFF", the clip limit doesn't work.

CLIP LIMIT

OFF

23456789

Filter: this unit are equipped with two low cut filter eliminating unwanted low- frequency signals like rumble noise: 75Hz and 35Hz. You will activate 35Hz low cut filter by Turning these two small dip switches of 2 and 9 up to the top, and turn these two small dip switches down, you will choose 75Hz low cut filter.

35Hz FILTER

FILTER OFF

35Hz FILTER

FILTER ON

75Hz FILTER

FILTER ON

67 10

TMA500-4

CAUTION FOR APPLICATION

TMA250-4

As to the speaker cable, if you use a long one, use as thick a cable as possible to prevent deterioration of the damping factor or power loss inside the cable.

Use the following formula to determine the fuse capacity according to the speaker's input capacity.

Po=I R I= Po/R

Po[W] : Speaker's continuous input capacity (noise or RMS) R[ ] : Speaker's nominal impedance I[A] : Required fuse capacity

7.1 General Application instruction

the following instructions describe the common ways to install your TMA 250-4/500-4 power amplifier into a sound application system:

First, turn off power switch before connection.

Refer to chapter 5 for speaker connection

TMA 250-4/500-4 power amplifier may be operated in one of the three modes, please slide the mode selector for the Specific operating mode

7.2 caution for speak connection

The output capacity of TMA 250-4/500-4 power amplifier is very high, be sure to use a speaker system that has sufficient input capacity. If the input capacity of your speaker system is lower than the rated output of the TMA 250-4/ 500-4 power amplifier, you can protect your speakers by connecting a fuse serially between the speaker and the amplifier as shown below.

Output

Fuse

(+)

(-)

Speaker System

TMA500-4

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BREAKER

CH1

CH2

CH3

CH4

INPUTS

CH1MODESWITCHES CH2

CH3MODESWITCHES CH4

OUTPUTS

MODESWITCH SETTINGS

FILTERS

35HzFILTER

FILTEROFF

35HzFILTER

FILTERON

75HzFILTER

FILTERON

67 10

CLIPLIMIT

STEREOMODE

OFFONOFF

6789

678910

SWITCHSETTINGS

TOBRIDGECHANNEL PAIRS SET INPUT SWITCHES AS SHOWN.USETHE LOWER NUMBERED CHANNEL'S INPUT ANDGAINCONTROL. CONNECT SPEAKER AS SHOWN.

CH1ANDCH2 CH3ANDCH4

BRIDGEABLE CHANNELPAIRS:

1234567

8910

BRIDGEMONO

CH3

CH4

BRIDGE MONO

BRIDGE

MONO

CH1

CH2

OUTPUTS

678910

PARALLELMODE

MADEIN CHINA

110-120V50/60Hz 220-240V50/60Hz

TMA 250-4

110-120V~11A

220-240V~6A

RATEDPOWER

CONSUMPTION2200W

ACINPUT

S/N

Page 9

TMA250-4

5.2 Rack Mounting

the most secure mounting is on a universal rack shelf available from vario us rack manufactures or your music dealer. The TMA 250-4/500-4 professional power amplifier fits into one standard 19" rack unit of space. Be sure that there is

air space around the unit for sufficient ventilation. If heat release is inadequate, this unit will retain heat inside,

may cause the protection, or even a fire.

enough which

Application

The TMA 250-4/500-4 provides three operating modes with each unit: stereo mode, parallel mode and bridged mode, you can decide each specific operating mode according to your actual application circumstance. Following examples will show you the typical connections, you can refer to install your TMA 250-4/500-4 into a sound system:

7.1 Operate TMA 250-4/500-4 Power Amplifier In Stereo Mode

In this mode, channel 1 and channel 2 operate in dependently ( as a conventional stereo amp).The channel 1 input signal will be output from the channel 1 output jacks, and the channel 2 input signal will be output form the channel 2 output jacks.(take channel 1 and channel 2 for example)

Channel 1

Channel 2

STEREO MODE

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Channel 2

Channel 1

Installation

5.1 Mains connection

Do not insert the power cord into this unit until voltage has been correctly set. Do not plug the power cord into the mains until the voltage has been correctly set. Please ensure that the TMA 205-4/500-4 professional power amplifi

supplied with the correct voltage before turning on this unit. If you can't power up this unit while turning on the

switch (1), check the Breaker (14) on the rear panel fist, maybe it is pressed to reset. Otherwise, contact

technician or qualified personnel for any service.

ris mains the

Caution: To reduce the risk of electric shock, do not perform any servicing other than contained in this manual unless you are qualified to do so. Please turn off this unit before anyinstallation and connection, esp. when you connect your unit into the sound system. This is important to prevent damage to the unit itself as well as other consequent speaker system. This is important to prevent damage to the unit itself as well as other consequent speaker system The mains connection of the TMA 250-4/500-4 professional power amplifier is made by using the enclosed power cord a standard IEC receptacle, and it meets all of the international safety certification requirement.

and

TMA500-4

12345678910

BREAKER

CH1

CH2

CH3

CH4

INPUTS

CH1MODESWITCHES CH2

CH3MODESWITCHES CH4

OUTPUTS

MODESWITCH SETTINGS

FILTERS

35HzFILTER

FILTEROFF

35HzFILTER

FILTERON

75HzFILTER

FILTERON

67 10

CLIPLIMIT

STEREOMODE

OFFONOFF

6789

678910

SWITCHSETTINGS

TOBRIDGECHANNEL PAIRS SET INPUT SWITCHES AS SHOWN.USETHE LOWER NUMBERED CHANNEL'S INPUT ANDGAINCONTROL. CONNECT SPEAKER AS SHOWN.

CH1ANDCH2 CH3ANDCH4

BRIDGEABLE CHANNELPAIRS:

1234567

8910

BRIDGEMONO

CH3

CH4

BRIDGE MONO

BRIDGE

MONO

CH1

CH2

OUTPUTS

678910

PARALLELMODE

MADEIN CHINA

110-120V50/60Hz 220-240V50/60Hz

TMA 250-4

110-120V~11A 220-240V~6A

RATEDPOWER

CONSUMPTION2200W

ACINPUT

S/N

TMA250-4

APPLICATION

6.2 Operate TMA 250-4/500-4 Power Amplifier In Parallel Mode

In this mode, the channel 1 input signal will be output from the output connectors of both channel 1 and channel

2. The channel 2 input jack is not used. The channel 1 and channel 2 volumes can be adjusted independently.

6.3 Operate TMA 250-4/500-4 In Bridge Mode

In this mode, the channel 1 input signal will be output from the bridge output connectors. In this case, use the channel 1 volume control to adjust the volume. keep the volume control of channel 2 turned completely down (counterclockwise). Then, you can control the volume of the whole system by adjusting the channel 1 volume control.

Channel 1

Channel 2

PARALLEL MODE

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Channel 1

BRIDGE MODE

1234567

8910

Channel 1

TMA500-4

12345678910

BREAKER

CH1

CH2

CH3

CH4

INPUTS

CH1MODESWITCHES CH2

CH3MODESWITCHESCH4

OUTPUTS

MODESWITCH SETTINGS

FILTERS

35HzFILTER

FILTEROFF

35HzFILTER

FILTERON

75HzFILTER

FILTERON

67 10

CLIPLIMIT

STEREOMODE

OFFONOFF

6789

678910

SWITCHSETTINGS

TOBRIDGECHANNEL PAIRS SET INPUT SWITCHES AS SHOWN.USETHE LOWER NUMBERED CHANNEL'S INPUT ANDGAINCONTROL. CONNECT SPEAKER AS SHOWN.

CH1ANDCH2 CH3ANDCH4

BRIDGEABLE CHANNELPAIRS:

1234567

8910

BRIDGEMONO

CH3

CH4

BRIDGE MONO

BRIDGE

MONO

CH1

CH2

OUTPUTS

678910

PARALLELMODE

MADEIN CHINA

110-120V50/60Hz 220-240V50/60Hz

TMA 250-4

110-120V~11A

220-240V~6A

RATEDPOWER

CONSUMPTION2200W

ACINPUT

S/N

12345678910

BREAKER

CH1

CH2

CH3

CH4

INPUTS

CH1MODESWITCHES CH2

CH3MODESWITCHESCH4

OUTPUTS

MODESWITCH SETTINGS

FILTERS

35HzFILTER

FILTEROFF

35HzFILTER

FILTERON

75HzFILTER

FILTERON

67 10

CLIPLIMIT

STEREOMODE

OFFONOFF

6789

678910

SWITCHSETTINGS

TOBRIDGECHANNEL PAIRS SET INPUT SWITCHES AS SHOWN.USETHE LOWER NUMBERED CHANNEL'S INPUT ANDGAINCONTROL. CONNECT SPEAKER AS SHOWN.

CH1ANDCH2 CH3ANDCH4

BRIDGEABLE CHANNELPAIRS:

1234567

8910

BRIDGEMONO

CH3

CH4

BRIDGE MONO

BRIDGE

MONO

CH1

CH2

OUTPUTS

678910

PARALLELMODE

MADEIN CHINA

110-120V50/60Hz 220-240V50/60Hz

TMA 250-4

110-120V~11A

220-240V~6A

RATEDPOWER

CONSUMPTION2200W

ACINPUT

S/N

Topp Music Gear TMA250-4, TMA500-4 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual