SE Munro Egg 150 Bedienungsanleitung

The Medium EGG 150 System Operation Manual

The Medium EGG 150 System

Contents

The Medium EGG 150 System

Dual Input Amplier (Control Panel) Front Pg 1

Dual Input Amplier (Control Panel) Back Pg 2

Setting up your System

Setup and Operation Pg 3

Positioning Pg 3

Equalisation Pg 4

Midrange Balance Pg 4

Control Unit Pg 4

Protection Pg 4

Running In Pg 5

Technical Information Pg 6

Safety Notice Pg 7

The Egg 150 System Operation Manual

The Medium EGG 150 System

SOURCE

MAIN AUX

SOFT O HARD

MIN MAX MIN MAX

MAIN AUX

MID EQ

Dual Input Amplier (Control Unit)

Front Panel

Main Switch

An illuminated switch for the entire system allows safe power up and shut down without having to access the rear of each

individual Egg monitor.

Main Volume

A precision potentiometer allows continuous listening level control of the main input channel without need to access the

speakers.

Aux Volume

Independent control of the Aux Input volume gives a useful record/playback comparator (or any other

alternate source input).

Source

Source select allows the comparison of two independent inputs. Input sensitivity of the main input can be selected on the rear

panel.

Mid Eq

This three way switch allows instant comparison of the ‘at’ reference response with a slightly harder mid range or a softer ‘HiFi’

setting. See page 4 for more information.

Headphone socket

An independent headphone amplier is used to listen to whichever input is selected. Inserting the head phone jack mutes the

power ampliers.

Headroom Indicator

An LED indicator designed to help protect your Egg system from overload. See Page 3 for more information.

12 345

Thank you for purchasing this sE Munro Egg 150 System, which was hand built in one of the most advanced microphone

manufacturing facilities in China. Conceived, designed and engineered in the UK and USA by Andy Munro, Siwei Zou

and James Ishmaev-Young and veried by extensive listening tests. Your system was constructed using the nest quality

electronic components and extensively tested to provide you with years of trouble-free operation.

Your Egg 150 System contains: 1 x Dual Input Amplier / Control Unit

1 x Left Speaker

1 x Right Speaker

2 x 3m Speaker Cable

2 x Amp Rack Ears

The Egg 150 System Operation Manual

IMPORTANT NOTICE

Ensure the mains voltage selector switch is in the correct position before connecting

to the mains power supply.

Dual Input Amplier (Control Unit)

Rear Panel

Main Inputs

Industry standard balanced XLR connectors with switchable +4/-10dB sensitivity. Pin 2 is +ve

Aux Inputs

Unbalanced RCA Phono connectors for consumer level (-10dBu) equipment.

HF Trim

The HF trim pots are designed to give absolute precision alignment of each channel and adjustment for personal taste. When

set to maximum (fully clockwise) the tweeters are at maximum sensitivity. The graduation is approximately -1dB at 10 kHz for

each 45 degrees of anticlockwise rotation.

LF Trim

The LF trim allows adjustment for speaker location and room acoustic eects. The reference (at) setting is fully clockwise

and up to 10dB of roll-o at 63Hz is available on each channel. See diagrams on page 5 for frequency range.

Outputs

The speaker connectors are industry standard 4 way Speakons with unique (foolproof) polarity alignment. The cables supplied

with each Egg system are very high quality, impedance matched multicore and under no circumstance should these be

changed or extended without advice from sE Munro. See diagram for pin connections.

LED

The focal point aiming LEDs on the speakers can be switched o once the system is aligned and no further adjustment is

likely. See page 3 for more information.

Voltage Selector

The voltage must be set to the appropriate value and the fuse is designed to protect the Egg system from excessive current

ow. Fuses should only ever be replaced with one of the correct value.

3 4

The Medium EGG 150 System

The Egg 150 System Operation Manual 2

Setup and Operation

The Egg 150 is designed specically for near-eld, free standing operation. This means that adjacent equipment

and surfaces will have some aect on the performance of the system and this should be taken into account when

planning and installing the speakers.The openness of the sound balance will be at its best in a room that is acoustically

treated in such a way as to be as neutral as is reasonably possible. Too much foam panelling on the walls and no bass

absorption will create an uneven spectrum and some eort should be made to avoid this. A free guide to acoustics

will be available from sE Munro.

Positioning

The ideal listening position for stereo is at between 1.0

and 1.5 metres from the speakers with the speakers the

same distance apart from each other. It is better to place

them closer rather than further apart if necessary. The

LED aiming device is intended to assist both the vertical

and horizontal alignment. It is particularly important to

place the speakers at the correct height and angle to

see both LEDs at their brightest. This will ensure that

the time alignment of the drivers will be optimum. It

is acceptable to use the integral stands to angle the

speakers in order to achieve this alignment (Figures 1

and 2) although as a general rule a horizontal axis will

work best. A downward angle can increase the reected

sound from consoles or tables and that can result in a

degradation of the mid frequency imaging.

When everything is optimised the centre image will

appear very solid and slightly forward of the main

stereo balance. A mono mix should be absolutely solid

with no impression of smearing to one side or the other.

It should be noted that there are many factors that can aect stereo balance so the Egg will often show up phase and

polarity issues with the rest of the system. That is what monitors are for!

Setting up your System

The Egg 150 System Operation Manual

1m – 1.5m

Figure 1 Figure 2

Equalisation

The Egg 150 is naturally neutral in its frequency response. This is mainly a result of the acoustically optimal enclosure

and the choice of small drivers with almost perfectly controlled directivity. However, not all rooms are neutral and

also the positioning of the speakers will aect the response. Placing a speaker very near a wall will increase bass and a

corner will have even more eect. This is because energy is reected from any surface and that energy will be in phase

with the direct sound at low frequencies. This might sound like a good thing but without some degree of acoustic

treatment the results can be unpredictable as at some frequencies the reverse will occur and the reections will

tend to cancel the direct energy. The Egg has precision trim potentiometers to equalise the bass and high frequency

response for a given location. The HF trim can be used to compensate for acoustic imbalances or (more likely) personal

preference. We all hear high frequencies in slightly dierent ways and also some allowance may be required for the

intended reproduction of the recording although almost all media have a‘at’response these days. As a general guide

a quarter turn (90o) will give 2dB of attenuation of the highest octave (see Fig 3) and that is the preferred setting for

most studio monitoring applications.

Midrange Balance

The Egg 150 has a unique feature and that is the midrange equalisation switch. Most studio engineers are familiar

with the raised mid frequency response of some systems and this can be a useful ‘magnifying glass’ for vocals and

other ‘critical’ aspects of the stereo mix. The Egg oers a subtle (+/- 1.5 dB) hard and soft response modier. Of course

we recommend the at (neutral) position for most applications.

Control Unit

The Egg is unique in that all the electronics are housed in a separate unit that can be placed within reach of the

operator and within the listening area. This has several important advantages.

• Allbalancingandadjustmentcanbedonewithouthavingtomovebackandforthbehindthespeakers.

• Thepowerampliersdonotcompromisetheacousticintegrityoftheegg‘shell’.

• Theunitactsasasourceselectandvolumecontrollerinitsownright.

• The3mspeakercablesallowtheunittobeplacedinarackorfreestanding.

• Powercanbeswitchedwithouthavingtoclamberbehindthespeakers.

Protection

The Egg 150 is well protected against electronic malfunction. An LED indicates when the system is approaching audio

or thermal overload and this (when illuminated continuously or for more than a few seconds) should be regarded

as a warning to either reduce monitoring level or allow the system some cooling time. The high currents used in

professional loudspeakers are capable of generating very high voice coil temperatures and prolonged loud listening

can cause driver failure.

Loud transients will pass through the system unhindered and the intermittent triggering of the overload LED is quite

acceptable. Some manufacturers prevent this by limiting and signal processing but this can give a false impression of

true dynamic range and can also impair sound quality.

The HF driver is tted with a self resetting thermal fuse, if the HF driver stops working reduce the level and allow a few

minutes for the fuse to reset. Then resume working but at a lower level to avoid a repeat.

Setting up your System

The Egg 150 System Operation Manual 4

Setting up your System

Running In

High quality drivers are used in the Egg systems.When new, they will reach their optimum working performance after approximately

24 hours of operation and after that should still be allowed to warm up before serious mixing is carried out.

System Adjustment Range

In Room Equalisation (oset for clarity)

Mid Frequency (Presence) Switch Settings

Reference Data

Frequency Response 45Hz to 20KHz (-3dB points)

Low Frequency Room Calibration +0/-10dB at 63 Hz continuously variable

High Frequency Calibration +1/-5dB at 10kHz continuously variable

Mid Frequency Adjustment +/- 1.5dB at 2kHz Centre Frequency

The Egg 150 System Operation Manual

Main I/P

Aux I/P

Gain

Main I/P

Aux I/P

Gain

Main

Level

Aux

Level

Main

Level

Aux

Level

Left Channel

LF HF MF

Equalisation

LF HF MF

Equalisation

Right Channel

HPF

LPF

Headphone Amp

HPF

LPF

HF Amp

LF Amp

HF Amp

LF Amp

LED

Headphone

Technical Specication

• SystemStereoTwowayactivecontrolunitwithfour50WRMSpoweramplierswithduallinear

power supplies

• HighHeadroomcapacitorsandvoltagerails

• Bassreexspeakerswith50HzQB4frontportalignment

• Speakereectiveinternalvolume14Litres

• 2wayasymmetricalelectroniccrossoverwithnominal2kHzalignment

• 25mmHFunitsensitivity95dBSPLfor1Wat1m

• 165mmLFsensitivity89dBfor1Wat1m

• 118dBPeakSPLat1KHzbothchannelsdriven

• Thermaltweeterprotectionwithautomaticcutoutandreset

• InputsensitivityMain+4/-10dBu,Aux-10dBu

• Continuouslyvariabledualmonitorlevelcontrolswithswitchableinputs

Technical Information

The Egg 150 System Operation Manual 6

Egg 150 System schematic

BEFORE USING YOUR EGG 150 SYSTEM PLEASE READ THESE NOTES CAREFULLY

Important safety Information

This unit contains high voltages and hot components and must not be opened in any circumstances.

The Egg 150 is a complete stereo system and the control unit, speakers and interconnecting cables are unique.

No substitutions of any sort should be used and no other speaker or amplier can be used with the cables.

The IEC (or US Equivalent) three core mains cable must be used with appropriate regard for earthing and supply voltage.

Do not use any other type of cable.

There are no user serviceable components inside the control unit and it is hazardous to open or operate the system with the unit open.

Internal fuses exist to protect the Egg components and in the event of system failure or inoperation please report the fault to

sE Munro or their representative for further advice.

The control unit requires adequate ventilation and the top panel must not be covered or placed near a source of heat or moisture.

Do not disconnect the speaker cables when the system is switched on.

Set Volume controls to minimum before connecting/disconnecting inputs

WARNING

Always follow the basic precautions listed below to avoid the possibility of serious injury or even death from electrical shock, short

circuiting, damages, re or other hazards. These precautions include the following:

! The power supply (if included with this system) contains no user-serviceable parts. Do not attempt to disassemble or

modify the internal components of the power supply in any way.

! Do not expose the system to rain, use it near water or in damp or wet conditions.

! If the power cord or plug becomes frayed, damaged, there is a sudden loss of sound during the use of the system or any

unusual smells or smoke should appear to be caused by it, turn the power switch o immediately, disconnect the mains

plug from the wall and have your system inspected by a qualied technician.

! Only use the voltage as specied as correct for the system supply.

! Always attach the three-pin attachment plug for the power supply to a properly grounded power source.

! Check the mains plug periodically and remove any dirt or dust that may have accumulated on it.

! Do not place the power cord near heat sources such as heaters or radiators and do not excessively bend or otherwise

damage the power cord, place heavy objects on it or place it in a position where anyone could walk or trip over, or roll any

thing over.

! When removing the power cable from either the power supply or the wall outlet, please do not jerk or pull on the power

cord. Always remove the cord by holding the plug itself.

! Always connect the power supply to a direct outlet and not an extension cord. Doing so may result in an inadequate power

supply for the unit to operate at specied levels.

! Always remove the plug from the outlet when the power supply is not in use for extended periods of time (longer than two

weeks). Also remove the plug from the outlet during any electrical storm.

! Do not expose the system or power supply to any excessive dust or vibrations or extreme cold or heat.

This includes but is not limited to: a car on a hot day, direct sunlight for long periods of time or near a heater or a radiator.

! Our power supplies are made for international use, so they all come with a voltage switch. This switch can be located on

the back of the unit next to the on/o switch. You will have a selection between115v or 230v. Please make absolutely sure

that you have the correct voltage selected for your outlet as a mistake in selection could cause serious damage to the power

supply and/or the system that is connected.

! sE Munro cannot be held responsible for any damage caused by improper use or modications of the system or power supply.

SAFETY NOTICE

The Egg 150 System Operation Manual

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