JL Audio e2150 5

PRE-OUTS

The e2150’s “Pre-Outs” connectors output unprocessed (pass-through) left and right channel preamp level signals, permitting connection of additional amplifiers in a system.

When using either the line level inputs (RCA input connections) or the “High Level Inputs” (four-pin connector), the output signals are identical to the input signals. If the “High Level Inputs” are used, the signal present at the “Pre-Outs” can still be sent to another JL Audio amplifier. In either case, the “Pre-Outs” signals are not affected by any settings in the “Amplifier Controls” or “Bass Boost Controls” sections.

SPEAKER OUTPUTS

The e2150’s speaker outputs are designed to accept 8 AWG - 16 AWG wire.

The e2150 is designed to deliver power into speaker loads equal to or greater than 2Ω when using a “stereo” configuration and speaker loads equal to or greater than 4Ω when using a “bridged” configuration.

To connect the speaker wires to the amplifier, first back out the set screws on the top of the terminal block, using the supplied 2.5 mm hex wrench. Strip 1/2 inch (12 mm) of insulation from the end of each wire and insert the bare wire into the terminal block, seating it firmly so that no bare wire is exposed. While holding the wire in place, tighten the set screw firmly, taking care not to strip the head of the screw.

! IMPORTANT

Speaker loads below 2Ω nominal per channel are not recommended and may cause the amplifier to initiate a protection mode and shut itself off.

BRIDGING CONSIDERATIONS

Bridging is the practice of combining the output of two amplifier channels to drive a single load. When bridged, each channel produces signals of equal magnitude, but opposite polarity.The combined output of the two channels provides twice the output voltage available from a single channel.The e2150 has been designed for bridging of its two channels without the need for input inversion adaptors.

To bridge the e2150’s two channels, use the “Ch1 +” and “Ch2 –” speaker connectors only (the “Ch1 –” and “Ch2 +” remain unused).When bridged, the e2150 will deliver optimum power into a 4Ω load.

! IMPORTANT

When bridged, the e2150 will deliver 150W x 1 into a 4Ω load or 90W x 1 into an 8Ω load. Operating a bridged e2150 into a load lower than 4Ω is not recommended.

Because a bridged pair of channels requires that both channels receive input, you need to connect both left and right inputs to the source unit. Connection of only one input will result in reduced power output, increased distortion and can cause the amplifier to overheat. Do not do this!

When the e2150 is operating in bridged mode, the output will be in mono (only one channel).This mono channel can contain right channel only information, left channel only information or the sum of the information from both the right and left

channels. In order to achieve one of these options, configure the inputs in one of these two ways:

1)Left Channel Only or Right Channel Only Information: If you wish to send a Left-only or Right-only signal to the e2150, use a “Y-Adaptor” to split the single channel signal into both left and right RCA inputs (or parallel-connect both positive and both negative high-level input connections to a single channel source signal).This option is useful when using one e2150 to drive the left channel speakers only and another e2150 to drive right channel speakers only.

! IMPORTANT

When parallel-connecting both positive and both negative high-level input connections as described above, make sure to connect negative (–) wires to negative (–) wires and positive (+) wires to possitive (+) wires.

2)Left + Right Channel Information: When bridged and fed by a stereo input, the e2150 will automatically combine the left and right channels into a summed mono (left + right) channel.This option is useful when using the e2150 to drive a subwoofer system or a summed mono

center channel.

AMPLIFIER STATUS INDICATOR LIGHTS /

PROTECTION CIRCUITRY

There are two status indicator lights on the

input / control end of the amplifier:

1)“Power” (Green): lights to indicate that the amplifier is turned on and operating normally.

2)“Protect” (Red): lights or flashes to indicate that the amplifier protection circuitry has been activated to prevent product failure.

a)If the red “Protect” indicator lights steadily (without flashing), the amplifier has exceeded its safe operating temperature.This causes the amplifier to shut off in order to protect its circuitry. When the amplifier’s temperature drops to a safe level, the red

“Protect” indicator will shut off and the amplifier will return to normal operation.

b)If the red “Protect” indicator flashes intermittently, the protection circuitry has detected a short-circuit or a dangerously low impedance connected to the amplifier output(s). Connecting

the speaker outputs to an impedance lower than

2Ω stereo (4Ω bridged) will cause this protection mode to activate.The amplifier’s output may cycle on and off when this protection mode is activated. When the problem is eliminated, the amplifier will return to normal operation.

SERVICINGYOUR JL AUDIO AMPLIFIER

If your amplifier fails or malfunctions, please return it to your authorized JL Audio dealer so that it may be sent in to JL Audio for service.

There are no user serviceable parts or fuses inside the amplifier.The unique nature of the circuitry in the JL Audio amplifiers requires specifically trained service personnel. Do not attempt to service the amplifier yourself or through unauthorized repair facilities.This will not only void the warranty, but may result in the creation of more problems within the amplifier.

If you have any questions about the installation or

setup of the amplifier not covered in

this manual, please contact your dealer or the JL AUDIO Technical Department for assistance: (954) 443-1100

9:00 AM – 5:30 PM Eastern Time,

Monday – Friday

JL AUDIO e2150