User Manual

MAINS CONNECTIONS

Your preamplifier has been factory set to the correct mains voltage for your country. The

voltage setting is marked on the serial badge, located on the rear or side panel. Check that this

complies with your local mains supply.

Export units for certain markets have a molded 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 NEUTRALterminal

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/SWITCH ON THE MAINS SUPPLY UNTIL ALL OTHER

CONNECTIONS HAVE BEEN MADE.

A LITTLE NOTE FOR LIVE ENGINEERS

The biggest concern for most engineers considering using tube gear live is its reliability. This is mostly quite

unjustified. You can visit just about any studio and see 30 and 40 year old tube gear working like new in the

racks. It is unlikely you will find any early solid state gear in use. Manley uses construction methods that

combine the most reliable parts of tube and solid state techniques like high quality circuit boards, strong over-

engineered chassis, transformer inputs and outputs, heavy 1/2 watt metal film resistors, and no electrolytic caps

in the signal path. This product should stand up to decades of heavy use. Unlike guitar amps that require re-

tubing every 3 or 6 months - this unit has no "power tubes", "rectifier tubes" and in power amps where we do use

such "Glow Fets" we run them cool and they tend to average about 5 years. On a positive note about tube guitar

amps - who avoids them because they might not handle the road? For 50 years they have proven road-worthy,

more reliable than solid state or speakers and easy to repair and find parts. On the other hand, we know other

tube gear that is not built to our standards and that may be difficult to repair - look inside before you buy.

The only two concerns are: Tubes tend to become microphonic when subjected to lots of vibration. Typical

outboard racks have some reasonable impact protection and this will help. The best answer to your concern is:

Carry a few spare tubes! You can almost always fix a problem in a few minutes this way. Unlike solid state, most

tubes tend to die gradually (like a battery) so 90% of the time you have plenty of warning.