Owner’s Manual MOON Series 310 LP Phono Preamplifier
MOON 310LP Phono Preamplifier Important Safety Instructions 1. Read these instructions. 2. Keep these instructions. 3. Heed all warnings. 4. Follow all instructions. 5. Do not use this apparatus near water. 6. Clean only with a dry cloth. 7. Do not block ventilation openings. Install in accordance with the manufacturer’s instructions. 8. Do not install near any heat sources such as radiators, heat registers, stoves or another apparatus that produces heat. 9.
MOON 310LP Phono Preamplifier Important Safety Instructions (cont’d) The lightning flash with the arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
MOON 310LP Phono Preamplifier Table of Contents Congratulations ............................................... 5 Unpacking and Warnings ................................... 5 Introduction .................................................... 6 Installation & Placement ................................... 6 Circuit Board Layout ......................................... 7 Internal Settings .............................................. 8 Using the 310LP with an External Power Supply ...
MOON 310LP Phono Preamplifier Congratulations! Thank you for selecting the MOON 310LP Phono Preamplifier as a part of your music/cinema system. This component has been designed to offer state-of-the-art high-end performance in an elegant package, while retaining all the sonic hallmarks on which Simaudio has made its reputation. We have spared no effort to ensure that it is amongst the finest phono preamplifiers available.
MOON 310LP Phono Preamplifier Introduction Your MOON 310LP Phono Preamplifier incorporates many significant design features to achieve its “world class” level of performance. This is an abbreviated list of the more important features: Isolated power supply on a separate circuit board using a toroidal transformer with 2 stages of voltage regulation. An extremely short signal path for a faster transient response.
MOON 310LP Phono Preamplifier Circuit Board Layout A B A B C C D D Figure 1: MOON 310LP Circuit Board layout Available Settings: A – Resistance loading jumper bank B – Capacitance loading jumper bank C – Equalization curve jumper bank D – Gain level jumper bank ____________________________________________________________________________________ Circuit Board Layout 7
MOON 310LP Phono Preamplifier Internal Settings There are four (4) types of input settings available on the MOON 310LP Phono Preamplifier; Capacitance loading, Resistance loading, Equalization curve and Gain level. Each setting is adjustable through the use of jumpers. For each type of setting, there are 2 banks of jumpers – one each for the left and right channels. This is the result of the 310LP’s genuine mirrorimage circuit design which yields exceptional stereo separation.
MOON 310LP Phono Preamplifier Internal Settings (cont’d) Capacitance Loading: There are three (3) different settings available for setting the capacitive load; 0pF, 100pF and 470pF which are represented by jumper sockets J6, J7 and J8 respectively for the left channel and jumper sockets J24, J25 and J26 for the right channel (refer figure 4 below). The factory default setting is 100pF, therefore jumpers will be found in sockets J7 & J25.
MOON 310LP Phono Preamplifier Internal Settings (cont’d) Gain Setting: There are four (4) gain settings available on the MOON 310LP. They are 40dB for MM cartridges and 54dB, 60dB and 66dB for MC cartridges. However, keep in mind that when using the balanced XLR outputs, each of these gain levels increase by a factor of 6dB to 46dB, 60dB, 66dB and 72dB respectively (note: to keep the circuit board labelling simple, only the singleended RCA gain levels are indicated).
MOON 310LP Phono Preamplifier Using the 310LP with an External Power Supply The MOON 310LP Phono Preamplifier can be operated with the optional MOON 320S Power Supply (purchased separately). Referring to figure 10 below, you will see an array of four (4) jumper sockets labeled STR1, STR2, STR3 and STR4. The factory default position for the 2 jumpers is in sockets STR2 and STR4 (positions B in figure 10).
MOON 310LP Phono Preamplifier Rear Panel Connections Figure 11: MOON 310LP Rear panel The rear panel will look similar to Figure 11 (above). There is one pair of single-ended inputs on RCA connectors located in the center with a ground post directly below. Connect the cables from your turntable to these inputs and the ground lead wire to the ground post. The MOON 310LP Phono Preamplifier has two pairs of outputs; One single-ended pair on RCA connectors and one balanced pair on XLR connectors.
MOON 310LP Phono Preamplifier Operating the 310LP We recommend that you leave your MOON 310LP Phono Preamplifier powered up at all times to maintain optimal performance. In the event that you plan to be away from your home for a few days, powering off the Phono Preamplifier may not be a bad idea. Once fully “broken-in”, please keep in mind that your 310LP will require several hours of playing time before it reaches its peak performance after you’ve powered it up again.
MOON 310LP Phono Preamplifier Specifications Circuit Layout ......................................................... Power Supply Transformer ....................................... Power Supply Capacitance ...................................... Single-ended inputs ................................................. Input Impedance - Adjustable ................................. Input Capacitance - Adjustable ............................... Single-ended output ...............................................
