Info on wiring speakers to an amplifier...

STEREO 4 OHM LOAD

We'll start with what is probably the simplest examples of how to wire a stereo configuration. The wiring example for the Series 218 amplifiers will work for the Series TO3 amplifiers, as well.

Figure 1
	Figure 1 shows a basic stereo wiring hook-up. Each speaker will have to handle the amplifier's full rated power (RMS) for it's channel.

Figure 2
	Figure 2 shows a basic stereo wiring hook-up for the 4 channel DPSQ50. Each speaker will have to handle the amplifier's full rated power (RMS) for it's channel.

Let's look at a little bit more complicated stereo 4 ohm set up. This one involves a series-parallel wiring scheme and the use of passive crossovers. A 12dB/octave or better crossover will give you the best result. This example can also be used for the Series TO3 amplifiers.

Figure 3
	In figure 3 we use a 2-way passive crossover to insure that each type of speaker stays within it's specified frequency. Even though this is a parallel wiring scheme, each speaker must be capable of handling the full rated output power (RMS) for it's channel. This is because each speaker per channel operates at different frequencies.

Figure 4
	In Figure 4 a lowpass crossover must be used so that only the subwoofer frequencies will be sent to the subwoofer speakers. Once, again, a 12dB/octave or better crossover will give the best results. Each speaker will have to handle the amplifier's full rated power (RMS) for it's channel.

STEREO 2 OHM LOAD

The following example will work on Series 218 or Series TO3 amplifiers.

Figure 5
	In figure 5 we see a parallel connection. The power to each set of speakers per channel will be equally divided between the speakers on the channel, so that each speaker will need to handle one-half of the full rated power (RMS) of it's channel.

DPSQ50 STEREO 4 OHM LOAD

Now we'll look at some additional DPSQ50 4 channel stereo 4 ohm examples.

Figure 6
	In figure 6 a 2-way passive crossover is used on each channel. The lower midrange frequency cut-off is set by the adjustments of the DPSQ50. Each speaker will have to handle the amplifier's full rated power (RMS) for it's channel.

An additional woofer/subwoofer amplifier could be added to this arrangement by utilizing the DPSQ50's Line Out jacks. With the Line Out crossover set in Lowpass mode, the upper cut-off frequency of the Line Out jacks is set at the lower midrange frequency cut-off of Channel Set A.

Figure 7
	In figure 7 we see the the wiring of Figures 3 and 4 (above) have been combined to provide a complete one amplifier system. See the notes for each Figure for the details of this wiring example.

SPECIAL DPSQ50 STEREO 4 OHM LOAD

This page would not be complete if we don't take a look at the DPSQ50's special ability to be set for two channel operation.

The DPSQ50 comes with an internal set of jumpers which can be set to allow it to be wired like a 2 channel amplifier, instead of it's normal 4 channel operation. The owners manual for this unit will tell you how to do this - it's easy.

When the DPSQ50 is in 2 channel mode, only one input signal pair is need to run all four channels. This allows for some useful wiring schemes. Now we'll look at a couple examples.

Figure 8
	In Figure 8 the DPSQ50 is wired as either a front or fill amplifier. Because of it's built-in phase coherent continuously variable crossovers, there is no need for external crossovers. Each speaker in this configuration must be able to handle a continous 50 watts (RMS).

Figure 9
	In Figure 9 the DPSQ50 is wired as a rear amplifier. Once, again, no external crossover is needed for the subwoofers. Each speaker in this configuration must be able to handle a continous 50 watts (RMS).

If two DPSQ50s are utilized as shown in Figures 8 and 9, you can easily install an excellent system.