Atlas Sound XLTE owner manual No bass

No bass.	Low frequency driver is not	Disconnect the 2 wires from the amplifier, switch the loudspeaker to
(Note: Model 47 has 2 LF drivers wired	functioning.	BIAMP mode, and, using an ohmmeter, measure the resistance
in parallel.)		between the wires. If the meter reads an open circuit, the LF driver
		may not be working. For the model 47 both drivers may not be
		working. Replace as needed.
Bass is weak on model 47.	One LF driver is not	Disconnect the 2 wires from the amplifier, switch the loudspeaker to
(Note: Model 47 has 2 LF drivers wired	functioning.	BIAMP mode, and, using an ohmmeter, measure the resistance
in parallel.)		between the wires. If the meter reads 6 Ohms, one LF driver may not
		be working. 3 Ohms is the normal reading. Replace as needed.
Low or no volume for the midrange.	Mid frequency driver or	Listen at low level to the mid-range driver located in the middle of the
(Model 46 only)	crossover is malfunctioning.	enclosure. If some sound is heard from the driver and it is not
		distorted, it is probably a crossover problem. If distorted sound or no
		sound is heard, either the crossover or the driver may not be working
		properly. Repair or replace as needed.
High frequencies are too weak or too	High Frequency Level switch	The High Frequency Level switch on the input panel has 2 positions.
bright.	needs adjustment	The +4 dB position provides more highs and the Flat less highs.
No high frequencies.	PASSIVE / BIAMP switch in the	Move the switch on the input panel to the PASSIVE (up) position.
	wrong position.
No midrange and highs on model 46.	PASSIVE / BIAMP switch in the	Move the switch on the input panel to the PASSIVE (up) position.
	wrong position.
No high frequencies.	High frequency driver or	Listen at low levels, to the high frequency driver. If some sound is
	crossover is malfunctioning.	heard from this area and it is not distorted, it is probably a crossover
		problem. If distorted sound or no sound is heard, the driver or
		crossover may not be working properly. Replace as needed.
SYMPTOMS - BIAMP MODE	PROBABLE CAUSE	WHAT TO DO
Bass is distorted and highs are muffled.	1/4 in. jacks instead of Neutrik	For BIAMP mode a Neutrik input jack must be used. One of the 1/4 in.
	jack is being used.	jacks can function as the LF input but if both the HF and LF amplifiers
		are plugged into the 1/4 in. jacks, this will short the amplifiers together
		and no signal will be fed to the HF. This can also damage your
		amplifiers.
Using an electronic crossover, bass is	The wiring for LF and HF	Check wiring to the loudspeaker and make sure the LF is going to pins
weak and highs are muffled.	sections is reversed.	1+ / 1- and the HF is going to pins 2+ / 2- on the Neutrik connector.
Using an electronic crossover, bass is	The wiring for LF and HF	Check wiring from crossover to amplifiers and amplifiers to
weak and highs are muffled.	sections is reversed.	loudspeaker. Make sure the LF signal connects to the loudspeaker’s LF
		input and the HF signal connects to the loudspeaker’s HF input.
Poor sound quality.	Incorrect polarity connections.	Check the connections to the LF and HF sections. Verify the polarity is
		correct.: + and - amplifier outputs connect to corresponding + and -
		on loudspeaker’s LF and HF inputs on the Neutrik connector.
Sound OK but HF amplifier level	PASSIVE / BIAMP switch in the	Move the switch to the BIAMP (down) position.
cannot be adjusted.	wrong position.
Bass is weak.	LF and HF amplifiers are not	Either turn up the LF amplifier or turn down the HF amplifier to get
	properly adjusted.	more lows.
Bass is weak on model 47.	LF driver is not functioning.	Disconnect the 2 wires from the LF amplifier and, using an ohmmeter,
		measure the resistance between the wires. If the meter reads 6 Ohms
		one LF driver may not be working. 3 Ohms is the normal reading.
		Replace as needed.
No sound or no bass or no highs using	Neutrik connector not seated	Make sure Neutrik connector is fully seated by twisting it clockwise
Neutrik connector		about 1/4 turn after plugging it in. Then engage the locking ring.
No bass.	Wrong connection.	Make sure LF amplifier is either wired to pins 1+ /1- on the Neutrik
		connector or is connected to one of the 1/4 in. jacks.
No bass.	LF driver is not functioning.	Disconnect the 2 wires from the LF amplifier and, using an ohmmeter,
		measure the resistance between the wires. If it reads an open circuit,
		the LF driver may not be working. Replace as needed.
No bass.	LF amplifier is not on or	Check that the LF amplifier is turned on and that the loudspeaker is
	loudspeaker disconnected.	properly connected to the amplifier.
No bass.	LF section of electronic	Check that the electronic crossover has LF output and that it is
	crossover is not working.	properly connected to the amplifier.
Midrange and highs are weak.	HF and LF amplifiers are not	Either turn up the HF amplifier or turn down the LF amplifier to get
	properly adjusted.	more highs.
No midrange or highs.	HF amplifier is not on or	Check that the HF amplifier is turned on and that it is properly
	loudspeaker disconnected.	connected to the loudspeaker pins 1+ / 1- on the Neutrik connector.
No high frequencies.	HF amplifier is not on or	Check that the HF amplifier is turned on and that loudspeaker is
	loudspeaker disconnected.	properly connected to the amplifier.

PAGE 39 Community XLT / XLTE Series Owner’s Manual