Polaroid LF-4215 user manual Connections, Normal Connection

Connections

Normal Connection

The LF-4215 has barrier strip screw termi- nals for connection. The terminals accept up to #10 AWG stranded loudspeaker wir- ing. Use the largest wire size and shortest wire length possible for a given installa- tion. Observe the polarity markings and keep polarity consistent throughout the system for best performance.

Parallel Connection of Second SB-5218

The terminals marker SPK2 may be used to connect another LF-4215 in parallel. Con- nect the wires as shown in the illustration, at right. Note: If the LF-4215’s internal wir- ing has been modified in any way, this may not function. If this is the case, remove the terminal cup and verify the presence of the factory yellow jumper and blue jumper wires; remedy as required or have the loudspeaker serviced.

Normal Connection Example:

Parallel Connection Example:

Amplifier capable of

driving 4 ohm loads

Amplifier capable of

driving 2 ohm loads

Individual Transducer Connection (requires modification)

The transducers are wired in parallel inside the enclosure. If individual trans- ducer connection is required, remove the terminal cup and remove the yellow and the blue jumper wires that are connected between the SPK1 and SPK2 terminals. Replace the terminal cup and mark the enclosure with a note of the modification.

Individual Transducer Connection Example:

CAUTION!

Requires removal of terminal cup

and cutting of both the yellow and the blue jumper wires that con- nect the SPK1 and SPK2 terminals

Amplifier capable of

driving 2 ohm loads