Yorkville Sound LS700P owner manual Input Ground Switch, Input Level Switch

the 9 o’clock position except when operating at low levels. For most applications the control should be set between 0dB and +20dB.

A setting of 0dB on the SUBWOOFER LEVEL control is the correct starting point when setting up a sound system. From there the sound can be adjusted for best sound. The 0 dB mark refers to the setting that will give full power when the line input is used and the input signal is at a level of +4 dBV. This also is the setting to give a sensitivity of

2.83Vrms (1 watt 8-Ohms) for 100 dB spl when set for speaker level input. With a typical full range companion speaker this will give flat response. In either line or speaker operation it will usually be desirable to set the control at +3 to +6 to give some bass boost at low power levels. At levels approaching full power the built-in limiter will automatically reduce the gain to prevent over powering the subwoofer. Operation with settings significantly above +12 may clip the circuitry in the subwoofer reducing the dynamics of the music. Setting the subwoofer gain above +12 is only appropriate at low operating level.

3. Input Ground Switch

The LS700P expects the source feeding it to be grounded. A system comprised entirely of ungrounded equipment may cause the LS700P to hum or buzz. If you have a buzz or hum problem, try setting the switch to the "GROUNDED" position. The switch should otherwise be left in the "UNGROUNDED" position. Do not use the grounded position with an amplifier operating in bridged mode or when the sleeve of the input signal is live.

4. Input Level Switch

A switch is provided to switch input levels between speaker level and line level. The switch should be set to speaker level when the LS700P is fed from the output of an amplifier or powered mixer. The line level position is for when the LS700P is fed a signal from a processor, electronic crossover or the output of an unpowered mixer. When using the line level mode the use of balanced (Tip, Ring, Sleeve) cables will reduce the sensitivity to hum and buzz.

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		POWER				2
Yorkville
		HIGH		125 Hz
		FREQUENCY
LS700P		CUT OFF
		100 Hz			150 Hz	3
DESIGNED & MANUFACTURED BY YORKVILLE SOUND • TORONTO, CANADA
		SUBWOOFER
USER NOTE:		LEVEL	+3	+10	+20
This Subwoofer may be driven from Speaker Level		0
or Line Level signals. If an élite processor is used,
this Subwoofer should be plugged into the SUB
output of the processor. The High–Frequency					+30
Cutoff should be set to 150-Hzand the Input Level						4
should be set to LINE. For Line			-3	dB
Level operation a balanced (Tip
Ring Sleeve) cable should be
used. If the system is being	INPUT GROUND
operated without a processor,	UNGROUNDED
this Subwoofer can be	GROUNDED
connected to the output of the
	INPUT LEVEL
power amplifier as shown in the
diagrams and the Input Level	SPEAKER
should be set to SPEAKER. If	LINE
none of the equipment has a U-
ground, the INPUT GROUND
should be set to GROUNDED.
Otherwise the INPUT GROUND
should be set to the position that	LEFT INPUT
best minimizes the hum.
Refer to the Owner's	(mono)
Manual for other modes						5
of operation
	PARALLEL
	THRU
	RIGHT INPUT
	PARALLEL
	THRU

5.Stereo Input and Parallel Thru Jacks

For normal operation, connect the LS700P just like an ordinary speaker, along with the Full-Range speakers and set the Input Level switch to SPEAKER. If the audio source does not have a ground pin on the AC cord, the Input Ground switch must be set to GROUND (GND). The LS700P may be plugged in before or after the Full-Range speakers. Use the Left and Right Inputs when using a single LS700P in a stereo system. Use either the Left or the Right inputs when using separate LS700P's for each side (or when used in a Mono system). The LS700P does not alter the signal to the Full-Range speakers, and will not draw any power from the host amplifier driving them. Please note that an external crossover is not necessary.

As well as accommodating the full range speakers, the PARALLEL THRU jacks allow many LS700Ps to be connected in a string (or otherwise in parallel). There is no practical limit to the number of LS700Ps that may be connected together.

AT HIGH POWER LEVELS WHEN THE LIMITER IS OPERATING INCREASING THE SUBWOOFER LEVEL CONTROL WILL NOT INCREASE THE OUTPUT. DO NOT INCREASE SETTING WHILE OPERATING AT HIGH LEVELS.

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