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MAINS  CONNECTIONS

Your Manley Stereo Variable Mu

®

 Limiter Compressor has been factory set to the correct mains voltage for your

country.  (Well, that is what we intended to do when we knew where it would be initially shipped.) The mains
voltage that we set this unit for is marked on the serial badge, located on the rear of the chassis.  There is also a
brightly coloured sticker indicating the mains voltage setting next to the IEC mains entry socket. Check that this
complies with what comes out of your wall. If it is not...

...there is a voltage changeover switch inside the unit! The power transformer's primaries can be switched between
parallel for 120v operation or in series for 230v or 240v countries so be sure to check the sticker and the serial
number voltage indication for proper mains voltage. Failure to properly comply with mains voltage requirements
can cause extensive damage to the unit, which of course would not be covered by the warranty. If you relocate
from, say, a 120v country to a 240v country, you will need to change the voltage changeover switch. This is
achieved by first disconnecting the IEC mains cord from the rear of the unit (!) Remove the top cover by unscrew-
ing the two silver 4-40 phillips head screws on the top cover and sliding the cover out towards the rear of the unit.
Locate the round black voltage changeover switch on the power transformer board. Use a small flat screwdriver to
swiftly rotate the inner section of the voltage changeover switch to the desired position, labelled 110v or 220v. It
is a good idea to put some brightly coloured stickers on the unit like we did to remind yourself that you have
changed the voltage.

If you change your mains voltage, you will also need to change the MAINS FUSE. The MAINS FUSE may be
checked by first disconnecting the IEC mains cord from the power supply’s power inlet plug. Then gently push
and rotate counter-clockwise the black fuseholder cap located next to the IEC power socket. The fuse and cap
should spring outward toward your fingers. The fuse is a glass or white ceramic thing with silver end-caps. Inspect
the mains fuse for the proper rating; change if necessary. Refer to the fuse rating chart in the specifications
section of this manual. If you do not know what a blown fuse looks like, you may measure for continuity across
the fuse ends. If your meter reads “OL” when you measure across the fuse, that means “Open Leads” and that
would mean the fuse is blown. A blown fuse usually indicates A Very Bad Thing occurred. If this has happened to
you, try to figure out why it may have happened. (Using a Fast Blow fuse when we have specified a SLO-BLO
fuse is one reason.) If you have no idea why a fuse might have just blown on its own, you might want to consult
with Manley Labs or your dealer for further advice as Something Very Bad might have occured, like the power
transformer might have decided to retire early.

One way this could happen is by running the wrong mains voltage into the unit. Be sure not to do that.

If you live in a strange place...

Export units for certain markets have a moulded mains plug fitted to comply with local requirements.  If your unit does not
have a plug fitted the coloured wires should be connected to the appropriate plug terminals in accordance with the following
code.

GREEN/YELLOW

EARTH terminal

BLUE

NEUTRAL terminal

BROWN

LIVE terminal

As the colours of the wires in the mains lead may not correspond with the coloured marking identifying the terminals in your
plug proceed as follows;

The wire which is coloured GREEN/YELLOW must be connected to the terminal in the plug which is marked by the letter E
or by the safety earth symbol or coloured GREEN or GREEN and YELLOW.

The wire which is coloured BLUE must be connected to the terminal in the plug which is marked by the letter N or coloured
BLACK.

The wire which is coloured BROWN must be connected to the terminal in the plug which is marked by the letter L or coloured
RED.

DO NOT CONNECT OR SWITCH ON THE MAINS SUPPLY UNTIL ALL OTHER
CONNECTIONS HAVE BEEN MADE. (...or else...)

4

Содержание Stereo Variable MU

Страница 1: ...MU LIMITER COMPRESSOR OWNER S MANUAL brought to you by the clever folks at MANLEY LABORATORIES INC 13880 MAGNOLIA AVE CHINO CA 91710 USA TEL 909 627 4256 FAX 909 628 2482 email emanley manleylabs com...

Страница 2: ...AR PANEL 7 EXAMPLE SETTINGS 8 FRONT PANEL ADJUSTMENTS 9 OPERATIONAL NOTES 10 TECHNICAL NOTES 11 MASTERING AND M S MODELS 12 GAIN REDUCTION CURVES 13 SPECIFICATIONS 14 SERVICE ADJUSTMENTS 15 WARRANTY 1...

Страница 3: ...make sure that all supplied accessories are present Carefully examine all items for any possibility of shipping damage All of the tubes are already installed and should have survived the journey from...

Страница 4: ...located next to the IEC power socket The fuse and cap should spring outward toward your fingers The fuse is a glass or white ceramic thing with silver end caps Inspect the mains fuse for the proper r...

Страница 5: ...Check that the power is switched off on the unit 7 Connect the IEC mains cable to a 50 60 Hz AC source of the proper selected voltage 8 Power up the unit and allow it enough time to stabilize before u...

Страница 6: ...st setting will prevent most percussive signals from causing limiting or compression G DUAL INPUT Continuously variable attenuation of input signal entering the amplifier limiting circuitry Full atten...

Страница 7: ...terminals to help with hum problems Normally the two terminals are connected together D OUTPUT XLR 3 Pin XLR BALANCED Pin 1 Ground Pin 2 Positive going phase Pin 3 Negative going phase E INPUT XLR 3 P...

Страница 8: ...this page for example settings...

Страница 9: ...drums are sitting pretty then slow the attack Fast ATTACK RECOVERY settings tend to reduce transients Slower ATTACK preserves the mix and drums should not trigger compression overall level will Only...

Страница 10: ...cts with any reasonable looking setting This limiter may give some magic at unexpected settings It may help to use the bypass switch to compare the original input with the processed output to verify t...

Страница 11: ...ndividual triodes amplify equally See Adjustments Section The benefits of utilizing a variable mu vacuum tube as the heart of the limiting or compression function is that a widely varying range of inp...

Страница 12: ...0mS slow CCW The Recovery has always been a 5 position switch The times are 200mS 400mS 600mS 4S 8 Seconds NOTES ON M S MODIFICATIONS The M S modification allows various approaches to Mid Side recordi...

Страница 13: ...this page is for G R Curves...

Страница 14: ...D Input attenuator is before input transformer GR Thresholds Onset of LIMIT 20 dBM to 10 dBM input at 9 00 Onset of COMPRESS 10 dBM to 10 dBM Maximum Output 30 dB 26 V RMS 26 dB headroom Output attenu...

Страница 15: ...changing 5670 tubes 1 Adjusting this control adjusts the current draw of the 5670 cathodes 2 Set a multimeter to read DC volts 3 Connect a good DC voltmeter to the two test points below the GR meter 4...

Страница 16: ...ll not pay for express or overnight freight service nor will Manley Laboratories pay for shipments to locations outside the USA Charges for unauthorized service and transportation costs are not reimbu...

Страница 17: ...arranty and registration Thank you again for choosing Manley gear and reading all the way through The Owner s Manual We really mean that sincerely the bit about thanking you for choosing our gear THAN...

Страница 18: ...this page for templates...

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