Marantz PM-15S1 PM-15S1 User Manual - Page 7

ENGLISH BEFORE MAKING CONNECTIONS WIRING SPEAKER CABLE • Be careful not to short circuit in wiring speaker cables. • Peel off the corting of speaker cable as shown below. Approx. 1 cm Here following are explained two types of connections that improve sound quality. The speakers in these explanations have low and mid/high input jacks that support a bi-amp connection. To determine whether or not your speakers support a bi-amp connection, check in the instruction manual that came with your speakers or contact the manufacturer. Cut the corting of cable. Peel off the edge of cable. • Wiring with speaker cable. Twist conductors. Turn counter-clockwise Insert conductor to loosen. of cable. Turn clockwise to tighten. • Wiring with "Y" style terminal Turn counter-clockwise Insert conductor. to loosen. Turn clockwise to tighten. Your speaker system must satisfy the below conditions. If it does not, the PM-15S1's protective circuit will trip, whereby preventing proper playback. In some cases, the amplifier and speakers may be damaged. • If using 1 set of speakers, total speaker impedance must be 4Ω or more. • If using 2 sets of speakers, total speaker impedance must be 8Ω or more. BI-WIRING CONNECTION A bi-wiring connection separately connects the low and mid/ high jacks of the speaker to the amplifier using separate speaker cables. Because separate cables are used for low and mid/high sounds, the return current generated in the low speaker causes little interference with the mid/high speaker. The PM-15S1 and speakers of Connection Example 1 (pg. 5) use a bi-wiring connection, therefore also refer to that page for help. CD player, etc. PM-15S1 Bi-wiring Speaker system connection Mid/high speaker Band pass filter Low speaker COMPLETE BI-AMP CONNECTION Proposed by Marantz, the complete bi-amp connection enhances the bi-wiring connection. With it, the low and mid/high amplifiers are separate and independent of the preamplifier, therefore interference between low and mid/high sounds is reduced to a minimum. As a result, a wide sound environment can be reproduced. Connection Example 3 (pg. 7) connects two PM-15S1s by FCBS in a complete bi-amp connection, therefore also refer to that page for help. Complete bi-amp connection Speaker system CD player, etc. PM-15S1 biamp mode Mid/high speaker Band pass filter Low speaker 3