J 12 SUB - Subwoofer JAMO - Free user manual and instructions

Brand	Jamo
Model	J 12 SUB
Product Type	Active subwoofer
Speaker	12 inches (30 cm)
Dimensions (approx.)	Approx. 45 x 45 x 50 cm
Weight (approx.)	Approx. 20 kg
Power Supply	Mains 230 V / 50 Hz
Finish	Resistant vinyl
Inputs	Line In (L/LFE and R)
Controls	Gain, Lowpass filter, Phase (0/180°)
Built-in Power	ON / AUTO / OFF switch, green LED indicator
Auto Standby	After 15-20 minutes without signal
Maintenance	Dust or dry cloth, avoid abrasive products
Safety Instructions	Unplug before any connection
General Information	Manual available in several languages on notice-facile.com

Frequently Asked Questions - J 12 SUB JAMO

Where to place the Jamo J 12 SUB subwoofer?

For best results, place the subwoofer in a corner of the room, on the same wall as the front speakers. The corner position increases bass output. Try different positions to find the one that suits your room.

How to adjust the volume (gain) of the subwoofer?

If connected to a receiver's Subwoofer output, set the subwoofer volume to the midpoint or 0 dB on the receiver first, then adjust the subwoofer gain to match the main speakers. If connected to L/R preamp outputs, adjust the subwoofer gain directly.

How to set the Lowpass filter?

Turn the Lowpass knob to maximum (160 Hz) if using the receiver's setting. For floorstanding speakers, set between 50 and 90 Hz; for bookshelf or satellite speakers, between 90 and 150 Hz. The smaller the speaker, the higher the setting.

How to connect the subwoofer to a receiver without a Subwoofer output?

Use the receiver's left/right preamp outputs (if available) to the Left/LFE and Right inputs of the subwoofer. You can also use a high-level connection via speaker terminals, but that requires an adapter.

What does AUTO mode on the power switch mean?

In AUTO position, the subwoofer powers on automatically when it detects an audio signal. It goes into standby after 15 to 20 minutes without signal. In ON position, it stays on permanently. In OFF, it is off.

How to clean the subwoofer?

Use a dry cloth to dust. Avoid abrasive or solvent-based cleaning products. A vacuum cleaner with a soft brush can also be used.

What to do if the subwoofer was damaged during transport?

Inspect the unit upon receipt. If damaged, notify the carrier and your dealer, request an inspection, and keep the original packaging.

How to set the phase (0/180°)?

Select the position (0° or 180°) that produces the most bass at your listening position. This adjusts the acoustic alignment between the subwoofer and main speakers.

What does the green LED on the front mean?

The green LED indicates the amplifier is powered and receiving a signal. If off, the amplifier is off (standby or OFF mode).

Can I connect multiple subwoofers?

Yes, if your receiver supports multiple Subwoofer outputs, you can connect a second subwoofer. Follow the receiver's instructions for bass management.

USER MANUAL J 12 SUB JAMO

We want your new speaker system to look as good as it did leaving the factory! Please check promptly for any transit damage. Carefully unpack your new speaker system and verify the components against the packing list. In extreme circumstances, items may have become damaged in transit. If any damage is discovered, notify the delivery service and dealer where the system was purchased. Make a request for inspection, and follow their instructions for evaluation. Be sure to keep the product's original shipping carton.

CARE AND CLEANING

Your subwoofer has a durable vinyl finish that should only require dry dusting or cleaning with a dry cloth. Avoid the use of abrasive or solvent-based cleaners and harsh detergents. The brush attachment of your vacuum should remove any dust from your subwoofer enclosure.

PLACEMENT

Jamo* powered subwoofer are designed to reproduce deep bass and deliver the impact that makes your movies and music come alive. For optimum performance, place your subwoofer in a corner of the room on the same wall as your front channel speakers. (refer to Figure 1). Please note that room placement can have a dramatic effect on the performance of your powered subwoofer. Corner placement, as suggested above, will increase the amount of bass output, while placing the subwoofer along the middle of a wall, or out in the room

will decrease the amount of bass output. Experiment with a number of different placement options and control settings to find the one that best suits your particular room and taste. When choosing your subwoofer's location, keep in mind that you will need to connect the subwoofer's built-in amplifier to an AC power outlet.

Figure 1
Speaker Placement in Listening Area

ENGLISH

CONNECTIONS AND CONTROLS

CAUTION: Ensure that the subwoofer is unplugged from the AC wall outlet before making any connections.

"LINE IN" Connection - Most of today's surround receivers (and pre-amplifiers) have a line level subwoofer output labeled Subwoofer Pre Out, Sub Out, SW Out, etc. If you have this output, connect one end of a subwoofer cable to it and connect the other end of the cable into the subwoofer line input labeled LEFT/LFE. This connection allows the subwoofer to operate with both music and surround sound movies (refer to your receiver manual). In absence of a subwoofer output on your receiver, as an alternative hookup, you can connect Left and Right channel Pre-Amp Outputs from your receiver (if provided) to the Left/LFE and Right input on the subwoofer.

Level - If your subwoofer is connected to a Subwoofer Output of a surround receiver, first set the subwoofer volume level control in the receiver to the "half way" or "0 dB" position. Then increase the volume (or gain) of the subwoofer up until the subwoofer's volume level matches the output of your main speakers. After this setup is completed, the volume control on your system's main amplifier or pre-amplifier will be the volume control for both your subwoofer and speakers together. If your subwoofer is connected to the L/R Pre-Amp Outputs of a receiver there will be no subwoofer volume in that receiver to set before setting the subwoofer's gain control.

"LOWPASS" Control - The crossover point chosen determines where low bass frequencies are "handed off" from the speakers to the subwoofer. If setting the crossover point in the receiver, turn the Lowpass Filter knob on the subwoofer to the farthest point right (160Hz). Set the crossover point based on the size of the main left/right speakers you are using in the system. As a general rule, for larger, floorstanding speakers, set the crossover point

between 50Hz - 90Hz . If using small bookshelf or "satellite" speakers for the mains, set the crossover point between 90Hz - 150Hz . The smaller the speaker, the higher the setting until the bass frequencies blend well between the speakers and your subwoofer once your system is completely hooked up. If your receiver does not have a crossover point setting, set the Lowpass Filter on the subwoofer instead within the same recommended settings (see receiver manual for additional speaker setup info).

"PHASE" 0/180 - This control is used to acoustically match the subwoofer's output to your main speakers. Select the position, either 0^ or 180^ , in which your subwoofer has more output at the listening position.

"POWER" AUTO/ON/OFF - When this switch is in the "ON/AUTO" position, the subwoofer will automatically turn "on" when it senses a signal. It will automatically go into "standby mode" after 15-20 minutes with no signal. When this switch is in the "OFF" position, the subwoofer will remain "off" until the switch is manually turned back to the "ON/AUTO" position.

Power LED indicator - Located on the front baffle, this LED indicates the operating status of the built-in amplifier. The LED will light green when the amplifier is on and receiving a signal. If the LED is dark and not lit, the amplifier is off. For more information on the controls mentioned in this manual and on bass management, see your dealer or visit www.jamo.com

Left and Right pre-outs on Processor/Pre-Amp/Receiver connected to Left and Right line inputs on subwoofer amplifier

OR

Figure 2

LFE Output on Processor/Pre-Amp/Receiver connected to LFE input on subwoofer amplifier

Line Level Connections

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