J 112 SUB - Subwoofer JAMO - Free user manual and instructions

Product Type	Active Subwoofer
Brand	Jamo
Model	J 112 SUB
Dimensions (W x H x D)	380 x 420 x 420 mm
Weight	14.5 kg
Power Supply	230 V ~ 50/60 Hz
Power Consumption	300 W max
Amplification Type	Class D
Output Power	250 W RMS
Speaker	1 x 12" (30 cm) long excursion
Frequency Response	28 Hz – 140 Hz
Inputs	Line RCA, high level (speakers)
Outputs	Line RCA, high level (speakers)
Controls	Volume, crossover, phase, standby mode
Main Functions	Deep bass for home theater and music
Maintenance and Cleaning	Wipe with a soft, dry cloth. Do not use abrasive products.
Safety	Unplug before cleaning. Do not expose to water
Spare Parts and Repairability	Amplifier and speaker replaceable by a professional
Included Accessories	Power cable, RCA cable, user manual

Frequently Asked Questions - J 112 SUB JAMO

How do I connect the J 112 SUB subwoofer to my home theater amplifier?

Use an RCA cable to connect the subwoofer output of the amplifier to the LFE input of the subwoofer. You can also use the high-level inputs by connecting the amplifier's speaker terminals to the subwoofer.

What is the ideal crossover setting?

Set the crossover between 80 and 120 Hz depending on your main speakers. For home theater, 80 Hz is generally recommended.

How do I adjust the subwoofer phase?

Position yourself at the listening position and adjust the phase (0° or 180°) to achieve the strongest and most accurate bass level. You can also use a phase test.

What should I do if the subwoofer does not turn on?

Check the power cable and outlet. Make sure the standby mode is disabled or that a signal is present. If the problem persists, contact a technician.

The subwoofer is humming, what should I do?

A hum may come from a ground loop. Try plugging the subwoofer into a different outlet or use a power filter. Also check the RCA connections.

Can I use this subwoofer with a stereo hi-fi system?

Yes, connect the preamp output or the speaker terminals of your amplifier to the high-level inputs of the subwoofer. Adjust the crossover to integrate the subwoofer with your speakers.

How do I clean the J 112 SUB subwoofer?

Use a soft, dry cloth to dust the cabinet. Never use liquid or abrasive products. Avoid touching the speaker.

What is the recommended amplifier power for this subwoofer?

The subwoofer has its own built-in amplifier of 250 W RMS. It does not need an external amplifier. Simply ensure your receiver has a subwoofer output.

The standby mode does not turn off, what should I do?

Increase the volume of the source or the subwoofer. Some models have a trigger threshold. If necessary, disable standby mode via a switch (if present).

Where can I find spare parts for the J 112 SUB?

Contact an authorized Jamo dealer or customer service. Parts like the amplifier or speaker can be ordered.

USER MANUAL J 112 SUB JAMO

J 110 SUB | J 112 SUB

Technical line drawing of a square speaker with concentric circles and mounting holes (no text or symbols)

Technical diagram of a square frame with concentric circles and mounting holes, labeled 'Jamo' on the top-left corner (no other text or symbols)

INSPECTION

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 subwoofers 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.

graph TD
    A["S"] -->|6'-15'| B["TV"]
    B --> C["C"]
    C --> D["L"]
    C --> E["R"]
    D --> F["X"]
    E --> G["Y"]
    F --> H["+ Optional Sub"]
    G --> I["Z"]
    H --> J["+ Optional Sub"]
    I --> K["+ Optional Sub"]
    style A fill:#99ccff,stroke:#333
    style B fill:#99ccff,stroke:#333
    style C fill:#99ccff,stroke:#333
    style D fill:#99ccff,stroke:#333
    style E fill:#99ccff,stroke:#333
    style F fill:#ccc,stroke:#333
    style G fill:#ccc,stroke:#333
    style H fill:#ccc,stroke:#333
    style I fill:#ccc,stroke:#333
    style J fill:#ccc,stroke:#333
    style K fill:#ccc,stroke:#333

Figure 1
Speaker Placement in Listening Area

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.

WA-2 Port Connection - For wireless connectivity of your new Jamo J 110 SUB or J 112 SUB, the optional WA-2 is available. The WA-2 will only operate with select Klipsch, Energy, Mirage and Jamo brand subwoofers that have a "WA Port" input. The WA-2 is a 2.4 GHz product designed to wirelessly transmit a signal up to a 50 foot radius. See klipsch.com for more details.

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/STANDBY" 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/STANDBY" 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

graph TD
    A["PRE • OUT LFE OUTPUT"] --> B["R"]
    A --> C["L"]
    B --> D["Line IN"]
    C --> D
    D --> E["RL/LFE"]

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

LFE Output on Processor/Pre-Amp/Receiver connected to LFE input on subwoofer amplifier
Figure 2
Line Level Connections

INSPECTION

graph TD
    A["PRE - OUT LFE"] --> B["R"]
    A --> C["L"]
    B --> D["Surround A/V (Audio y video Surround)"]
    C --> D
    D --> E["LINE IN"]
    E --> F["RL/LFE"]
    F --> G["O BIEN"]
    G --> H["Surround A/V (Audio y video Surround)"]
    H --> I["LINE IN"]
    I --> J["RL/LFE"]

Figura 2
Cableado De Los Subwoofers J 110, J 112

INSPEÇÃO

graph TD
    subgraph "OU"
        A["PRE - OUT LFE"] --> B["R"]
        A --> C["L"]
        B --> D["Receiver A/V Surround"]
        C --> D
        D --> E["LINE IN"]
        E --> F["RL/LFE"]
    end
    subgraph "OU"
        G["OU"] --> H["Receiver A/V Surround"]
        H --> I["LINE IN"]
        I --> J["RL/LFE"]
    end

Figura 2
Conexão Do Subwoofer J 110, J 112

ISPEZIONE

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