Topp Music Gear TXO-234 MK II User Manual

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Topp Music Gear TXO-234 MK II User Manual | Manualzz

USER's MANUAL

TXO-234 MK II

2-way/3-way stereo /4-way mono

ACTIVE CROSSOVER

SAFETY RELATED SYMBOLS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

This symbol, wherever used, alerts you to the presence of un-insulated and dangerous voltages within the product enclosure. These are voltages that may be sufficient to constitute the risk of electric shock or death.

This symbol, wherever used, alerts you to important operating and maintenance instructions. Please read.

Protective Ground Terminal

AC mains (Alternating Current)

Hazardous Live Terminal

ON: Denotes the product is turned on.

OFF: Denotes the product is turned off.

WARNING

Describes precautions that should be observed to prevent the possibility of death or injury to the user.

CAUTION

Describes precautions that should be observed to prevent damage to the product.

Disposing of this product should not be placed in municipal waste and should be separate collection.

WARNING

Power Supply

Ensure that the mains source voltage (AC outlet) matches the voltage rating of the product. Failure to do so could result in damage to the product and possibly the user.

Unplug the product before electrical storms occur and when unused for long periods of time to reduce the risk of electric shock or fire.

External Connection

Always use proper ready-made insulated mains cabling (power cord). Failure to do so could result in shock/death or fire. If in doubt, seek advice, from a registered electrician.

Do not Remove any Covers

Within the product are areas where high voltages may present. To reduce the risk of electric shock do not remove any covers unless the AC mains power cord is removed.

Covers should be removed by qualified service personnel only.

No user serviceable parts inside.

Fuse

To prevent fire and damage to the product, use only the recommended fuse type as indicated in this manual.

Do not short-circuit the fuse holder.

Before replacing the fuse, make sure that the product is OFF and disconnected from the AC outlet.

Protective Ground

Before turning the product ON, make sure that it is connected to Ground. This is to prevent the risk of electric shock.

Never cut internal or external Ground wires.

Likewise, never remove Ground wiring from the Protective Ground Terminal.

Operating Conditions

Always install in accordance with the manufacturer's instructions.

High to High-Mid:

High-Mid to Low-Mid:

Low-Mid to Low:

CROSSOVER

Filter Type

95 dB

95 dB

92 dB

Linkwitz-Riley, 24 dB/Octave, state-variable

Stereo Mode Frequencies

Low/High

Low/Mid

Mid/High

Mono Mode Frequencies

1

44 to 930 Hz

44 to 930 Hz

440 Hz to 9.3 kHz

10

440 Hz to 9.3 kHz Low/Low-Mid

Low-Mid/High-Mid

High-Mid/High

1

44 to 930 Hz

440 Hz to 9.3 kHz

440 Hz to 9.3 kHz

10

440 Hz to 9.3 kHz

440 Hz to 9.3 kHz

FUNCTION SWITCHES

Front Panel

Low Cut

Mute

Phase Invert

CD Horn

Activates 25 Hz Butterworth, 12 dB/Octave high-pass filter

Mutes the individual output

Inverts the phase at the individual output

Corrects CD horn frequency response above

3.5 kHz

Activates the limiter function for all outputs Limiter

Rear Panel

Xover Frequency Multiplies crossover frequency range by 10

Mode

LF Sum

Selects stereo/mono and 2/3/4-way operation

Selects normal stereo or mono-summed low

frequency operation

ON=Channel 1 6dB louder / Channel 2: the same as before

CONTROLS

Input

Xover Frequency

Delay

Gain

Threshold

POWER SUPPLY

Mains Voltages

Controls the input gain (-

Controls the output gain (-

to +12 dB)

Controls the crossover frequency

Controls the delay at the low output (0 to 2 msec.)

to 6 dB)

Controls the threshold of the limiter ( 6 dB to OFF)

Power Consumption

Fuse

USA/Canada

U.K./Australia

Europe

120 V~, 60 Hz

240 V~, 50 Hz

230 V~, 50 Hz

General Export Model

95-120 V~, 210-240 V~, 50-60 Hz

17W

210-240V: T250mAL 250VAC

95-120V: 500mA 250VAC

Standard IEC receptacle Mains Connection

PHYSICAL

Dimensions

Net Weight

483 194.5 44mm/19(W)" 7.7(D)" 1.7(H)"

3 kg(6.61 lb)

LINK 3 to 1

3

1

XLR-M-JACK unbalanced link

GROUND

SIGNAL

SLEEVE

TIP

2

3

LINK 3 to 1

2

XLR-F-JACK unbalanced link

SIGNAL

GROUND

TIP

1

SLEEVE

SPECIFICATIONS

INPUT

Connectors

Type

XLR

Electronically servo-balanced, RF filtered

Impedance

Max. Input level

Balanced 50k Ohms, unbalanced 25k Ohms

22 dBu typical, balanced or unbalanced

CMRR

OUTPUT

40 dB, typically 55 dB at 1 kHz

Connectors

Type

XLR

Electronically servo-balanced, RF filtered

Impedance Balanced 60 Ohms, unbalanced 30 Ohms

Max. Output Level +20 dBm balanced/unbalanced

PERFORMANCE

Bandwidth 20 Hz to 20 kHz, 0/ 0.5 dB

Frequency Response +5 Hz to -90 kHz, 0/ 3 dB

Ref.: 4 dBu, 20 Hz to 20 kHz, unweighted

Stereo Mode:

Low Output 93 dB

Mono Mode:

93 dB

Low-Mid Output 94 dB

Mid Output 95 dB

High-Mid Output 94 dB

High Output 90 dB

Dynamic Range 106 dB, unweighted

88 dB

THD & Noise Limiter Off

0.04%

Interchannel Crosstalk High to Low:

High to Mid:

Mid to Low:

Limiter On

0.5

93 dB

94 dB

95 dB

Non-use Periods:

The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.

Object and Liquid Entry:

Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

Damage Requiring Service:

The appliance should be serviced by qualified service personnel when:

-The power supply cord or the plug has been damaged; or

-Objects have fallen,or liquid has been spilled into the appliance; or

-The appliance has been exposed to rain; or

-The appliance dose not appear to operate normally or exhibits a marked change in performance; or

-The appliance has been dropped, or the enclosure damaged.

Servicing:

The user should not attempt to service the appliance beyond that is describedin the

Operating Instructions.All other servicing should be referred to qualifield service personnel.

TABLE OF CONTENTS

FEATURES ......................................................................................................................1

CONTROL ELEMENTS....................................................................................................2

stereo 2-way operation ......................................................................................................2

stereo 3-way operation .....................................................................................................4

mono 4-way operation .......................................................................................................6

CONNECTION CABLES ..................................................................................................9

SPECIFICATIONS..........................................................................................................10

13 XOVER FREQ. button

This button serves the knob of LOW/LOW-MID XOVER FREQ on the front-panel.

Press the button, and the knob ranges the frequency from 440 Hz to 9.3 kHz.

Release the button, and the knob ranges the frequency from44 to 930Hz.

Always switch off the entire system before you press this button, as it produces

heavy interference noise that could damage your speakers and/or other equipment.

14 INPUT connector

This balanced XLR Connecter is used to input the signal.

CONNECTION CABLES

In this chapter you'll find the wiring diagrams for the connectors to be used with your

crossover.

Take care of the connector cables, always holding them by the connectors and avoiding

knots and twists when coiling them: this gives the advantage of increasing their life and

reliability, which is always to your advantage.

Periodically check that your cables are in good condition, that they are correctly wired

and that all their contacts are perfectly efficients: a great number of problems (faulty

contacts, ground hum. discharges, etc.) are caused entirely by using unsuitable or faulty

cables.

Balanced XLR-M

1

3

GROUND

2 HOT (+)

Balanced XLR-F

COLD (-)

2

HOT (+)

3

1

SLEEVE

Balanced JACK

COLD (-)

GROUND

GROUND

TIP

RING

COLD (-)

HOT (+)

19 HIGH-MID/HIGH XOVER FREQ. control

This knob governs the crossover frequency between the High-Mid and High bands.

24 HIGH-MID OUTPUT control

This knob ranges the output level of the High-Mid band from to +6dB.

25 HIGH-MID PHASE INVERT button

This button reverses the phase of the High-Mid output.

26 HIGH-MID MUTE button

This button can be used to mute the High-Mid band.

27 HIGH OUTPUT control

This knob ranges the output level of the High band from to +6dB.

28 HIGH PHASE INVERT button

Via this button, you can reverse the phase of the High output.

29 HIGH MUTE button

This button can be used to mute the High band.

30 THRESHOLD control

This knob determines the limiter threshold.

31 LIMITER button

This button activates all limiters. Whenever the signal surpasses the limiter threshold,

the LIM-LEDs above the Gain control light up, signaling that the TXO-234 MK II cuts

Back the output level.

MONO 4-WAY

AC INPUT

95-120V /210-240V 60-50Hz

Rated Power Consumption 17W

FUSE:

210-240V: T250mAL 250VAC

95-120V: 500mA 250VAC

REPLACE FUSE WITH CORRECT

TYPE ONLY

STEREO 3-WAY

STEREO 2-WAY

HIGH

HIGH

HIGH

HIGH-MID

MID

NOT USED

NOT USED NOT USED

XOVER FREQ.

1

10

NOT USED

LOW

LOW

LOW/MID

LOW/HIGH

INPUT

INPUT

MODE

MONO

4-WAY

NOT

VALID

STEREO

3-WAY

STEREO

2-WAY

LF SUM

MONO

4-WAY

NORMAL

SUMMED

LOW SUM

LOW SUM

NOT USED

HIGH

HIGH

LOW-MID

MID

NOT USED

LOW LOW/LOW-MID

XOVER FREQ.

1

10

INPUT

LOW/LF SUM

LOW/LF SUM

LOW/MID

LOW/HIGH

INPUT

INPUT

3 4 8 11

Fig. 9 Active control elements on the rear panel

12 13 14

3 HIGH OUTPUT connector

This connector outputs the High band signal.

4 HIGH-MID OUTPUT connector

This connector outputs the High-Mid band signal.

8 MODE button

In mono 4-way mode, the right button must be pressed. Please observe the labels on

the the rear panel of the unit.

Always switch off the entire system before you press this button, as it produces

heavy interference noise that could damage your speakers and/or other equipment.

11 LOW-MID OUTPUT connector

This connector outputs the Low-Mid band signal.

12 LOW OUTPUT connector

This connector outputs the Low band signal.

FEATURES

R

8

4

INPUT

INPUT

0 dB

CHANNEL 1

4

120

1k2

8 OFF

60

600

12

LOW CUT

LOW CUT

MONO

LOW/LOW-MID

LOW/MID HIGH

LOW-MID/HIGH-MID

MID/HIGH

ON 44

440

200

2k 350

3k5 1k2

700

7k

600

930

9k3

440

Hz

2k

Hz

3k5

9k3

7k

25Hz

XOVER FREQ.

XOVER FREQ.

LOW DELAY

LOW DELAY

LOW OUTPUT

LOW OUTPUT

LIM

LOW-MID OUTPUT

MID OUTPUT

LIM

HIGH OUTPUT

LIM

0.7

0

1

1.3

2

4

2 mSec.

0 dB

DELAY

2

4

INV

4

2

6

0 dB

2

4

INV

4

2

0

6 dB

2

6

4

INV

MONO 4-WAY

OFF 8

ON

4

INPUT

0 dB

LOW CUT

8 OFF

LOW/MID HIGH

STEREO

CHANNEL 2

4

120

1k2

60

600

200

2k

12 ON 44

440

Hz

HIGH-MID/HIGH

MID/HIGH

350

3k5 1k2

700

7k

600

930

9k3

440

2k

Hz

3k5

7k

9k3

25Hz

XOVER FREQ.

XOVER FREQ.

0.7

LOW DELAY LOW OUTPUT

LIM

1

0 mSec.

DELAY

1.3

2

4

2

0 dB

HIGH -MID OUTPUT

MID OUTPUT

2

4

INV

4

2

0

6 dB

LIM

2

6

4

INV

4

HIGH OUTPUT

HIGH OUTPUT

LIM

2

0 dB

MONO 4-WAY

2

6

4

INV

MULTIBAND LIMITER

9

6 12

0

6

18

OFF

OFF

ON dB

POWER

ON

OFF

TXO-234

MK

2-WAY/3-WAY STEREO

4-WAY MONO

ACTIVE CROSSOVER

HIGH-PRECISION STEREO 2-WAY / 3-WAY / MONO 4-WAY CROSSOVER WITH LIMITERS

Professional high-precision stereo 2-way / 3-way / mono 4-way crossover

World-class performance 24 dB per octave Linkwitz-Riley filters

Absolutely flat summed amplitude response, zero phase difference

Individual output level controls for all bands

Individual limiter on each output for optimal loudspeaker protection

Individual output mutes for easy band adjustment

Individual phase reverse switches for instant phase correction

Switchable 25 Hz subsonic filter on each input for low-frequency driver protection

"Low Sum" function provides low-level mono output for subwoofer operation

Adjustable time delay for phase alignment between drivers

CD horn equalization for constant directivity horn compensation

Servo-balanced, gold-plated XLR connectors for all inputs and outputs

Ultra high-precision Alps potentiometers for ultimate accuracy and repeatability

High-quality components and exceptionally rugged construction for long life and relia-bility

Shielded toroidal mains transformer for minimal noise interference

CONTROL ELEMENTS

Stereo 2-way operation

Firstly, the activate stereo 2-way mode by means of the two MODE buttons on the rear

panel. The STEREO-LED on the front panel, above the second LOW CUT button, lights up.

Fig. 1 Proper selection of the two MODE buttons for stereo 2-way operation

Subsequently, the LEDs above the active controls on the front panel light up, signalling which controls are active in the operating mode you just selected. The functions of these controls can be seen from the second strip label. In stereo mode, both channels perform the same

functions.

7 13

R

8

4

INPUT

INPUT

0 dB

LOW CUT

LOW CUT

MONO

LOW/LOW-MID LOW-MID/HIGH-MID

LOW/MID HIGH MID/HIGH

CHANNEL 1

4

120

1k2

8

OFF

60

600

12

ON

44

440

200

2k 350

3k5

700

930

9k3

1k2

7k

600

440

2k

3k5

9k3

7k

Hz Hz

25Hz

XOVER FREQ.

XOVER FREQ.

0.7

LOW DELAY

LOW DELAY

1

1.3

LOW OUTPUT

LOW OUTPUT

LIM

2

4

0

2

4

INV

LOW-MID OUTPUT

MID OUTPUT

LIM

4

2

0

2

4

INV

4

2

HIGH OUTPUT

LIM

0

2

4

INV

0 mSec.

2 dB

6 dB

6 dB

6

DELAY

MONO 4-WAY

OFF

ON

8

4

INPUT

0 dB

HIGH-MID/HIGH

MID/HIGH LOW CUT

8

OFF

LOW/MID HIGH

STEREO

CHANNEL 2

4

120

1k2

60

600

200

2k 350

3k5

700

7k

1k2

600

2k

3k5

7k

12

ON

44

440

930

9k3

440 9k3

Hz Hz

25Hz

XOVER FREQ.

XOVER FREQ.

0.7

LOW DELAY LOW OUTPUT

LIM

1

1.3

2

4

0 mSec.

2

0 dB

2

4

INV

6

HIGH -MID OUTPUT

MID OUTPUT

LIM

0

4

2 dB

HIGH OUTPUT

HIGH OUTPUT

2

4

INV

4

2

6

0 dB

LIM

2

4

INV

6

DELAY

MONO 4-WAY

STEREO 3-WAY 2-WAY

MULTIBAND LIMITER

9

6 12

0

6

18

OFF

OFF

ON dB

POWER

ON

OFF

TXO-234

MK

2-WAY/3-WAY STEREO

4-WAY MONO

ACTIVE CROSSOVER

1 2 3 5 6 8 12 14 15

Fig. 2 Active control elements on the front panel

30 31

1 INPUT control

This control adjusts the input gain by a range of to +12dB (see control 16).

2 LOW CUT button

This button activates the 25Hz high-pass filter protecting the woofers against low

- frequency signals.

3 LOW/HIGH XOVER FREQ control

This contorl governs the crossover frequency between the Low and High bands. When

the XOVER FREQUENCY button on the rear of the unit is pressed, the frequency range

is multiplied by the factor 10.

5 DELAY control

This control delays the Low signal as much as 2 ms, which is useful to align the speaker systems in phase.

6 LOW OUTPUT control

This knob controls the output level of the Low band from to +6 dB.

7 LOW PHASE INVERT button

Via this button, you can reverse the phase of the Low output.

Subsequently, the LEDs above the active controls on the front panel light up, signaling

which controls are active in the operating mode you just selected. The functions of these

controls can be seen from the first strip label.

7 10 25 28

R

8

4

INPUT

INPUT

0 dB

LOW CUT

LOW CUT

MONO

LOW/LOW-MID

LOW/MID HIGH

LOW-MID/HIGH-MID

MID/HIGH

CHANNEL 1

4

120

1k2

8 OFF

60

600

12 ON 44

440

200

2k

Hz

350

3k5

700

7k

1k2

600

930

9k3

440

2k

Hz

3k5

9k3

7k

25Hz

XOVER FREQ.

XOVER FREQ.

LOW DELAY

LOW DELAY

LOW OUTPUT

LOW OUTPUT

LIM

LOW-MID OUTPUT

MID OUTPUT

LIM

HIGH OUTPUT

LIM

0.7

1

1.3

2

4

0

0 2 mSec.

DELAY dB

2

4

INV

4

2

0

6 dB

2

6

4

INV

4

2

0 dB

2

6

4

INV

MONO 4-WAY

OFF 8

ON

4

INPUT

0 dB

HIGH-MID/HIGH

LOW CUT LOW/MID

STEREO

HIGH

CHANNEL 2

4

120

1k2

8 OFF

60

600

200

2k

12 ON 44

440

350

3k5

1k2

700

7k

600

930

9k3

440

MID/HIGH

2k

3k5

7k

9k3

Hz Hz

25Hz

XOVER FREQ.

XOVER FREQ.

0.7

1

0

LOW DELAY mSec.

1.3

2

LOW OUTPUT

LIM

2

4

0 dB

2

6

4

INV

4

HIGH -MID OUTPUT

MID OUTPUT

LIM

2

0 dB

2

4

INV

6

4

2

HIGH OUTPUT

HIGH OUTPUT

LIM

0 dB

MONO 4-WAY

STEREO 3-WAY 2-WAY

2

4

INV

0

MULTIBAND LIMITER

9

6 12

6 6

18 OFF

OFF ON dB

DELAY POWER

ON

TXO-234

MK

2-WAY/3-WAY STEREO

4-WAY MONO

ACTIVE CROSSOVER

OFF

1 2 3 4 5 6 8 9 11 15 19 24 26 27 29 30 31

Fig. 8 Active control elements on the front panel of the TXO-234 MK II

1 INPUT control

This contorl adjusts the input gain by a range of to +12dB.

2 LOW CUT button

This button activates the 25Hz high-pass filter protecting the woofers against low- frequency

signals.

3 LOW/LOW-MID XOVER FREQ. control

This control governs the crossover frequency between the Low and Low-Mid bands.

When the XOVER FREQUENCY button on the rear of the unit is pressed, the frequency

range is multiplied by the factor 10.

4 LOW-MID/HIGH-MID XOVER FREQ. control

This control governs the crossover frequency between the Low-Mid and High-Mid bands.

5 DELAY control

This knob is used to delay the Low signal as much as 2 ms, which is useful to align the

speaker systems in phase.

6 LOW OUTPUT control

This knob ranges the output level of the Low band from to +6dB.

7 LOW PHASE INVERT button

Via this button, you can reverse the phase of the Low output.

8 LOW MUTE button

This button is used to mute the Low band.

9 LOW-MID OUTPUT control

This knob ranges the output level of the Low-Mid band from to dB.

10 LOW-MID PHASE INVERT button

Via this button, you can reverse the phase of the Low-Mid output.

11 LOW-MID MUTE button

This button is used to mute the Low-Mid band.

15 CD HORN button

This button provides a special form of frequency correction in the High band for

constant-directivity horns.

MONO 4-WAY

AC INPUT

95-120V /210-240V 60-50Hz

Rated Power Consumption 17W

FUSE:

210-240V: T250mAL 250VAC

95-120V: 500mA 250VAC

REPLACE FUSE WITH CORRECT

TYPE ONLY

STEREO 3-WAY

STEREO 2-WAY

HIGH

HIGH

HIGH

HIGH-MID

MID

NOT USED

NOT USED NOT USED

XOVER FREQ.

1

10

NOT USED

LOW

LOW

LOW/MID

LOW/HIGH

INPUT

INPUT

MODE

MONO

4-WAY

NOT

VALID

STEREO

3-WAY

STEREO

2-WAY

LF SUM

MONO

4-WAY

NORMAL

SUMMED

LOW SUM

LOW SUM

NOT USED

HIGH

HIGH

LOW-MID

MID

NOT USED

LOW LOW/LOW-MID

XOVER FREQ.

1

10

INPUT

LOW/LF SUM

LOW/LF SUM

LOW/MID

LOW/HIGH

INPUT

INPUT

3 4 8 9 10 11 12 13 14

Fig. 6 Active control elements on the rear panel

4 & 11 MID OUTPUT connector

These connectors output the Mid band signal.

3 & 10 HIGH OUTPUT connector

These connectors output the High band signal.

8 MODE button

In stereo 3-way mode, both buttons must be released . Please observe the labels on

the rear panel of the unit.

Always switch off the entire system before you press this button, as it produces

heavy interference noise that could damage your speakers and/or other equipment.

9 LOW SUM button

In stereo mode, the two Low paths can be summed by the LOW SUM button and

routed to the Low output of channel 1, which is particularly useful in systems using

additional subwoofers.

12 LOW (LF SUM) OUTPUT connector

This connector outputs the Low band signal.

13 XOVER FREQ. button

This button serves the knob the of LOW/MID XOVER FREQ on the front-panel.

Press the button, and the knob ranges the frequency from 430 Hz to 9.3 kHz.

Release the button, and the knob ranges the frequency from 43 to 930Hz.

Always switch off the entire system before you press this button, as it produces

heavy interference noise that could damage your speakers and/or other equipment.

14 INPUT connector

This balanced XLR Connector is used to input the signal.

Mono 4-way operation

Firstly, activate mono 4-way mode by means of the two MODE buttons on the rear panel.

The MONO-LED on the front panel, above the first LOW CUT button, lights up.

Fig. 7 Proper selection of the two MODE switches for mono 4-way operation

8 LOW MUTE button

This button can be used to mute the Low band.

12 HIGH OUTPUT control

This knob controls the output level of the High band from to +6dB.

13 HIGH PHASE INVERT button

Via this button, you can reverse the phase of the High output.

14 HIGH MUTE button

This button can be used to mute the High band.

15 CD HORN button

This button provides a special form of frequency correction in the High band for constant

-directivity horns.

30 THRESHOLD control

This knob determines the limiter threshold.

31 LIMITER button

This button activates all limiters. Whenever the signal surpasses the limiter threshold,

the LIM-LEDs above the Gain control light up, signaling that the TXO-234 MK II cuts

back the output level.

MONO 4-WAY

AC INPUT

95-120V /210-240V 60-50Hz

Rated Power Consumption 17W

FUSE:

210-240V: T250mAL 250VAC

95-120V: 500mA 250VAC

REPLACE FUSE WITH CORRECT

TYPE ONLY

STEREO 3-WAY

HIGH

HIGH

HIGH

HIGH-MID

MID

NOT USED

NOT USED NOT USED

XOVER FREQ.

1

10

NOT USED

LOW

LOW

LOW/MID

LOW/HIGH

INPUT

INPUT

MODE

MONO

4-WAY

NOT

VALID

STEREO

3-WAY

STEREO

2-WAY

LF SUM

MONO

4-WAY

NORMAL

SUMMED

LOW SUM

LOW SUM

NOT USED

HIGH

HIGH

LOW-MID

MID

NOT USED

LOW LOW/LOW-MID

XOVER FREQ.

1

10

INPUT

LOW/LF SUM

LOW/LF SUM

LOW/MID

LOW/HIGH

INPUT

INPUT

1 2 3 5 6 8 9 10

Fig. 3 Active control elements on the rear panel

12 13 14

1 AC inlet

This jack is used to connect the unit to the mains with the enclosed power cord.

2 FUSE HOLDER / VOLTAGE SELECTOR

Your unit may have the AC Voltage Selector (~115V/60Hz or~230V/50Hz) built into the

Fuse Holder. With a small screw driver pull/pop out the Fuse Holder and rotate it so

that the arrow showing the proper voltage in your area points toward the other arrow

in the upper left comer of plug assembly, and re-insert.

3 & 10 HIGH OUTPUT connector

These connectors output the High band signal.

5 & 12 LOW (LF SUM) OUTPUT connector

These connectors output the Low band signal.

6 & 13 XOVER FREQ. button

This button serves the knob of LOW/HIGH OVER FREQ on the front-panel.

Press the button, and the knob ranges the frequency from 440Hz to 9.3kHz.

Release the button, and the knob ranges the frequency from 44 to 930Hz.

Always switch off the entire system before you press this button, as it produces

Heavy interference noise that could damage your speakers and/or other equipment.

8 MODE button

In stereo 2-way mode, do press the first button and release the second one. Please

observe the labels on the rear panel of the unit.

Always switch off the entire system before you press this button, as it produces heavy

interference noise that could damage your speakers and/or other equipment.

9 LOW SUM button

In stereo mode, the two Low paths can be summed by the LOW SUM button and routed

To the Low output of channel 1, which is particularly useful in systems using additional

subwoofers.

14 INPUT connector

This balanced XLR Connecter is used to input the signal.

Stereo 3-way operation

Firstly, activate stereo 3-way mode by means of the two MODE buttons on the rear panel.

The STEREO-LED on the front panel, above the second LOW CUT button, lights up.

Fig. 4 Proper selection of the two MODE switches for stereo 3-way operation

Subsequently, the LED s above the active controls on the front panel l ight up, signalling

these controls can be seen from the second s trip label. In stereo mode, both channel s

per form the same functions.

7 10 13

R

8

4

INPUT

INPUT

0 dB

LOW CUT

LOW CUT

MONO

LOW/LOW-MID

LOW/MID HIGH

CHANNEL 1

4

120

1k2

8

12

OFF

ON

60

600

44

440

200

2k 350

3k5

700

7k

930

9k3

LOW-MID/HIGH-MID

MID/HIGH

1k2

600

440

2k

3k5

9k3

7k

Hz Hz

25Hz

XOVER FREQ.

XOVER FREQ.

LOW DELAY

LOW DELAY

0.7

1

1.3

2

4

0 mSec.

2

LOW OUTPUT

LOW OUTPUT

LIM

0 dB

2

4

INV

LOW-MID OUTPUT

MID OUTPUT

LIM

4

2

0

2

4

INV

4

2

HIGH OUTPUT

LIM

0

2

4

INV

6 dB

6 dB

6

DELAY

MONO 4-WAY

OFF

8

ON

4

INPUT

0 dB

HIGH-MID/HIGH

LOW CUT LOW/MID

STEREO

HIGH

CHANNEL 2

4

120

1k2

8

OFF

12

ON

60

600

44

440

200

2k

350

3k5 1k2

700

7k

600

930

9k3

440

MID/HIGH

2k

3k5

7k

9k3

Hz Hz

25Hz

XOVER FREQ.

XOVER FREQ.

0.7

LOW DELAY LOW OUTPUT

LIM

1

0 mSec.

2

1.3

2

4

0 dB

HIGH -MID OUTPUT

MID OUTPUT

LIM

0

2

4

INV

4

2 2

4

INV

4

2

6 dB

6

HIGH OUTPUT

HIGH OUTPUT

LIM

0 dB

2

4

INV

6

MONO 4-WAY

STEREO 3-WAY 2-WAY

MULTIBAND LIMITER

9

6 12

0

6 dB

18

OFF

OFF

ON

DELAY POWER

ON

TXO-234

MK

2-WAY/3-WAY STEREO

4-WAY MONO

ACTIVE CROSSOVER

OFF

30 31 1 2 3 4 5 6 8 9 11 12 14 15 16

Fig. 5 Active control elements on the front panel

1 & 16 INPUT control

These knobs adjust the input gain by a range of to +12dB.

2 LOW CUT button

This button activates the 25Hz high-pass filter protecting the woofers against low-

frequency signals.

3 LOW/MID XOVER FREQ control

This control governs the crossover frequency between the Low and Mid bands. When

the XOVER FREQUENCY button on the rear of the unit is pressed, the frequency range

is multiplied by the factor 10.

4 MID/HIGH XOVER FREQ control

This knob governs the crossover frequency between the Mid and High bands.

5 DELAY control

This control delays the Low signal as much as 2 ms, which is useful to align the speaker

systems in phase.

6 LOW OUTPUT control

This knob ranges the output level of the Low band from to +6dB.

7 LOW PHASE INVERT button

Via this button, you can reverse the phase of the Low output.

8 LOW MUTE button

This button can be used to mute the Low band.

9 MID OUTPUT control

This button ranges the output level of the Mid band from to +6 dB.

10 MID PHASE INVERT button

Via this button, you can reverse the phase of the Mid output.

11 MID MUTE button

This button can be used to mute the Mid band.

12 HIGH OUTPUT control

This knob ranges the output level of the High band from to +6 dB.

13 HIGH PHASE INVERT button

Via this button, you can reverse the phase of the High output.

14 HIGH MUTE button

This button can be used to mute the High band.

15 CD HORN button

This button provides a special form of frequency correction in the High band for

constant-directivity horns.

30 THRESHOLD control

This knob determines the limiter threshold.

31 LIMITER button

This button activates all limiters. Whenever the signal surpasses the limiter threshold,

the LIM-LEDs above the Gain control light up, signaling that the TXO-234 MK II cuts

back the output level.

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