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JL AUDIO 250/1
monoblock subwoofer amplifier
o w n e r ' s m a n u a l
Thank you for purchasing a JL Audio amplifier for
your automotive sound system.
Your amplifier has been designed and manufactured to exacting
standards in order to ensure years of musical enjoyment in your
vehicle. For maximum performance and extended warranty
coverage, we highly recommend that you have your new amplifier
installed by an authorized JL Audio dealer. Your authorized
dealer has the training, expertise and installation equipment to
ensure optimum performance from this product. Should you
decide to install the amplifier yourself, please take the time
to read this manual thoroughly so as to familiarize yourself
with its installation requirements and setup procedures.
If you have any questions regarding the instructions in this
manual or any aspect of your amplifier's operation, please contact
your authorized JL Audio dealer for assistance. If you need further
assistance, please call the JL Audio Technical Support Department at
(954) 443-1100 during business hours (Eastern Time Zone).
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Summary of Contents for JL Audio Slash 250/1
- Page 1 If you have any questions regarding the instructions in this manual or any aspect of your amplifier’s operation, please contact your authorized JL Audio dealer for assistance. If you need further assistance, please call the JL Audio Technical Support Department at...
- Page 2 Cooling Efficiency Considerations: Your JL Audio amplifier employs an advanced type of heat management, called RealSink™.This feature takes advantage of convection and radiation effects to remove heat from the amplifier circuitry.
- Page 3 PRODUCT DESCRIPTION The JL Audio 250/1 is a monoblock subwoofer 7) Securely mount the amplifier using the amplifier utilizing proprietary and patented Class D supplied screws. technology. Its frequency response is limited to the 8) Connect the positive and negative power range below 500 Hz.
- Page 4 “Amplifier Input Section” of the amplifier. The “Low” position on the “Input Voltage” switch selects an input sensitivity range between JL AUDIO 250/1 JL AUDIO 250/1 200mV and 2V. This means that the “Input Sens.” rotary control will operate within that voltage window.
- Page 5 “Signal From” switch). See Appendix B (page 13) for details on “Input Voltage” settings. All “slave” amplifiers should get this switch set to “Low”. See Appendix C (page 14) for details. JL AUDIO 250/1 JL AUDIO 250/1 BASS CONTROL SECTION The 250/1 includes a basic bass processing...
- Page 6 Do not chassis ground any speakers connected This sophisticated power supply allows the amplifier to this or any other JL Audio amplifier. Doing so will to produce its optimum power (250 watts x 1) cause the amplifier to go into protection and mute over a wide range of speaker impedances.
- Page 7 11 - 14.5V. This design is beneficial for many reasons. One of these reasons is ease of setup. Because each JL Audio amplifier will always deliver the same amount of power within its operational range of impedances and supply voltages, the maximum, unclipped output is very predictable.
- Page 8 Slave A 250/1 Input SLAVE (A): Connect Slave A 250/1 Preamp Output to Slave B 250/1 Input SLAVE (B): JL AUDIO 250/1 JL AUDIO 250/1 first “Slave” amplifier, set the second “Slave” amplifier’s “Amp LP Filter” to the “Off” position.
- Page 9 Check the nominal load impedance to verify that the amplifier is driving a load between 1.5 - 4Ω. JL Audio monoblock amplifiers have two “+” positive connections and two “–”...
- Page 10 Frequency Response: 5 - 300 Hz (+0, -1 dB) / 5 - 500 Hz (+0, -3 dB) Damping Factor: >500 @ 4Ω/50 Hz, >250 @ 2Ω/50 Hz JL AUDIO 250/1 JL AUDIO 250/1 CROSSOVER SECTION: Amplifier Low-Pass Filter: State-variable, 12 dB/octave...
- Page 11 LIMITED WARRANTY - AMPLIFIERS (USA) JL AUDIO warrants this product to be free of defects in materials and workmanship for a period of ninety (90) days from the original date of purchase. The warranty term is extended to two (2) years if installation is performed or approved by an authorized JL AUDIO dealer (proof of installation or approval required on purchase receipt).