Cerwin Vega EXL 350.2 Installation Manual

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CERWIN-VEGA! MOBILE AUDIO
POWER AMPLIFIER
Operation and Installation Manual
EXL 200.2 EXL 350.2
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CERWIN-VEGA! EXL 200.2 AND EXL 350.2 POWER SYSTEM AMPLIFIER
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Input Connections and Audio Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
Connections for Power and Speakers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Mounting Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Wiring Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Setting the Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Setting the Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Setting the Bass Boost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Final System Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Product Specs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
To start enjoying your new Cerwin-Vega! two­channel amplifier, please read the instructions listed in this manual. Keep all instructions for future reference. Please fill out and send in the
enclosed warranty card to protect your purchase and aid in warranty service. Also, save your original sales receipt as proof of purchase.
Both the Cerwin-Vega! EXL 200.2 and 350.2 are full-featured two-channel amplifiers incorporating the following features:
• Advanced circuit design that features bridgeable and mixed mode operation for use in various systems, including those with satellite speakers and/or subwoofers
•Variable high-pass/low-pass electronic crossover with a 12dB per octave slope and full adjustable range (from 55Hz to 5.5kHz) to aid in audio system design
•Variable bass boost circuit to reinforce low
frequency signals that may be lost due to subwoofer box design
• Adjustable input level controls with ground loop isolation accepting a wide range of input signals
• Remote turn-on with "soft start" muting to prevent turn-on "thump"
• Pulse-Width Modulated (PWM) MOSFET power supply with low AM RFI and protection circuits for overheating and speaker shorts
• 2-ohm load capability to drive a variety of speaker systems
• Nickel-plated input/output connectors and an external automotive type fuse
Thank you for purchasing a Cerwin-Vega! car audio amplifier. This power amplifier has been designed to provide high quality performance with a minimum of maintenance. However, it’s performance will only be as good as the care and quality of components with which it is installed. We therefore advise that you read these instructions very carefully to familiarize yourself with the product and it’s features.
INTRODUCTION
ABOUT THE MANUAL AND WARRANTY
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OPERATION AND INSTALLATION MANUAL
POWER
INPUT
L & R SUM MONO
STEREO
BRIDGED (R IN)
GAIN
CROSSOVER
L
R
FLAT
LPF
HPF
FREQ
Hz
55
110
550
330
240
BASS
BOOST
0
18
dB
FREQ
RANGE
X 10
X 1
1
2
3
45 6 7
The Cerwin-Vega! EXL 200.2 provides 2x75 watts of power into a 4 ohm load and 2x100 watts of power into a 2 ohm load. The EXL
350.2 provides 2x110 watts of power into a 4 ohm load and 2x175 watts of power into a 2 ohm load. These full-featured models are an excellent choice for a variety of audio sound system configurations.
The units use an unregulated MOSFET power supply for superior control of output wattage. A toroid-coil transformer yields maximum power transfer with minimum heat loss.
Careful attention to circuit design keeps AM RFI at low levels, so you won't hear unwanted noise when the level is cranked up. Protection circuits safeguard the amplifier when overheating and speaker shorts or improper load conditions occur.
All connections and controls of the amplifiers are on the end panels and are easy to understand. We use Nickel-plated RCA and barrier connectors to ensure the best electrical connection for your system. Included is an external automotive type fuse that is easy to replace.
1. RCA Input Jacks
2. Gain Control
3. Bass Boost Control
4. Freq (Hz) Selection Control
5. Crossover Frequency Multiplier Switch
6. X-Over Mode Switch
7. Input Select Switch
Figure 1
DESCRIPTION
The front panel of the unit contains connections for RCA Inputs, Speaker Level Inputs and Audio Controls as shown below.
The RCA Input Connections are nickel-plated RCA Jacks and are labeled as RIGHT and LEFT.
INPUT CONNECTIONS AND AUDIO CONTROLS
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CERWIN-VEGA! EXL 200.2 AND EXL 350.2 POWER SYSTEM AMPLIFIER
Gain Control - This allows you to set the nominal
operating level of the amplifier. The amplifier's range, 250mV to 4V for RCA inputs.
Bass Boost Control - The amplifier also
features a "high-Q" (i.e. narrow frequency band) Bass Boost circuit. It acts much like an equalizer, with adjustable gain (from 0 to +18dB) fixed at
45Hz. Use this feature to tune low-frequency audio response to compensate for a less than ideal subwoofer enclosure design. The added boost produces rich, full bass tones that are normally difficult to reproduce in the car audio environment. NOTE: If Bass Boost is undesirable, set Bass Boost to 0dB.
Frequency (Hz) Selection Control - The
crossover frequency is fully adjustable between 55Hz and 5500Hz (via the Crossover Frequency Multiplier) for a wide range of crossover points. Use this feature, along with your speaker manufacturer's recommended crossover frequencies, to quickly design a more advanced system (see Applications on page 5.) NOTE: If the X-Over Mode Switch is set to OFF, varying the Freq (Hz) Control will produce no effect.
Crossover Frequency Multiplier Switch -
When engaged, this switch increases the crossover frequency by a factor of 10. Example: If the Freq (Hz) dial is set for 240 Hz, pushing in the Multiplier Switch changes the setting to 2400 Hz.
X-Over Mode Switch - This switch is equipped
with a 12dB per octave electronic filter for precise frequency attenuation with minimal phase distortion. The steep crossover slope keeps midrange tones out of the subwoofer and thereby eliminates an unnatural "nasal" tone quality in the audio system. A filter is activated by sliding the X-Over Mode Switch to either LPF or HPF.
Input Mode Switch - This switch allows you to
set the input mode. Stereo input allows full left and right stereo operation. Right (bridged) input allows single channel input for bridged operation. This is especially useful in high-powered systems when using one amplifier for each subwoofer / speaker. L + R (sum mono) allows a stereo input to be summed into a mono output.
HIGH-PASS/LOW-PASS FILTER CONTROLS
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OPERATION AND INSTALLATION MANUAL
1
2
3
45 6
L
R
MIN
2
BRIDGED
MIN
4 2 MIN
AMP MAX
+12VGND
REM
40
CONNECTIONS FOR POWER AND SPEAKERS
The rear panel of the amplifier contains power and
speaker connections as shown below.
1. Left Speaker Output
2. Bridged Speaker Output
3. Ground Input
4. Remote Turn-on Input
5. Battery + 12V Input
6. 25 Amp Fuse
Figure 2
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CERWIN-VEGA! EXL 200.2 AND EXL 350.2 POWER SYSTEM AMPLIFIER
INSTALLATION
This section lists Mounting and Wiring Precautions for installing the amplifier. Combined with the experience of a professional installer, these safeguards provide enough detail to successfully complete an installation. If you do not have the necessary skills, do not install the amplifier yourself. Instead, see your authorized Cerwin-Vega! dealer for installation recommendations.
MOUNTING PRECAUTIONS
Although the amplifier incorporates heat sinks and protection circuits, mounting the amplifier in a tight space without any air movement can still damage internal circuitry over time. Choose a site that provides adequate ventilation and is isolated from the environment. For easy system set-up, mount the amplifier so the front panel controls will be accessible after installation.
In addition, observe the following precautions:
1. For the most efficient cooling, mount the
amplifier so cool air runs along the length of the fins rather than across them. Remember, any moving air will dissipate heat.
2. Mount the amplifier on a rigid surface.Avoid mounting to subwoofer enclosures or areas prone to vibration.
3. Prior to drilling, make sure proposed mounting holes will not cut into the fuel tank, fuel lines, or electrical wiring.
WIRING PRECAUTIONS
Read all wiring precautions. If you are not sure of the connections, contact your authorized Cerwin­Vega! dealer.
1. Before installation, make sure the source unit Power switch is in the OFF position.
2. Disconnect the negative (-) lead of the battery before making any power connections.
3. When making connections, be sure that each connection is clean and secure. Insulate final connections with electrical tape or shrink tubing. Failure to do so may damage your equipment.
4. A secure clean ground connection is critical to the performance of your amplifier. Use the shortest ground wire possible and securely connect to the vehicle battery to minimize resistance and avoid noise problems.
5. Add an external fuse on the amplifier's positive (+) power lead and connect it as close as possible to the vessel's (+) battery terminal. Use a rating that equals the total current consumption at full output of all amplifiers in the system. Adding an external fuse will protect the electrical system from short circuits that can cause a fire.
6. Refer to Figure 6 when making electrical connections. Connect the amplifier's positive (+) lead via a fuse directly to the positive (+) terminal on the battery. Do not connect this wire to the vehicle's fuse panel. Use red-insulated 10-gauge (or larger) wire for the amplifier's positive (+) power lead and the same-gauge black-insulated wire for the ground.
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OPERATION AND INSTALLATION MANUAL
7. When replacing the amplifier 's fuse, always use one having the same current rating. Substituting a higher-rated fuse or a slow-blow type can result in serious damage to the amplifier.
8. Make sure that your vehicle’s electrical system (alternator, battery, etc.) is capable of handling the additional load. If you are planning a multi-amplifier system, you may need to add a second battery and possibly upgrade the alternator with a higher-output rated model. Consult your authorized Cerwin-Vega! dealer for recommendations.
9. To avoid noise problems, run the amplifier's positive (+) power lead along one side of the vehicle to the battery. Run the remote turn-on wire and RCA audio cables down the center, and route the speaker wires along the remaining side. If wires must cross, run them perpendicular to each other.
10. When creating passage holes for the power wire, use grommets to eliminate any sharp
edges created during drilling. This will protect the wire from being nicked and causing a short circuit.
11. Extra cable can cause signal loss and act as an "antenna" for noise. Use only high­quality RCA cables that are no longer than necessary to make a direct connection with the source unit or equalizer.
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CERWIN-VEGA! EXL 200.2 AND EXL 350.2 POWER SYSTEM AMPLIFIER
Figure 6 - Electrical connections for the EXL 200.2 and EXL 350.2
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OPERATION AND INSTALLATION MANUAL
SETTING THE GAIN
After completing the installation, follow these steps to set the Gain Control and then perform the Final System Checks.
1. Turn the Gain Control all the way counter­clockwise.
2. Turn the vehicle’s Ignition Switch to the ON position. Then turn the ON/OFF Switch on the source units to the ON position. Set all Tone or Equalization Controls to "flat" positions and turn Loudness off.
3. Play a CD or Tape and set the Volume Control at 75% of full level. NOTE: If the system uses an equalizer, set its frequency controls to "flat" positions.
4. Slowly increase the Gain Control. Stop when you hear a slight distortion of audio.
SETTING THE CROSSOVER
The amplifier features a fully adjustable crossover. To set the crossover, follow these steps:
1. Using the X-Over Mode Switch, select the desired mode - LP for Low Pass, HP for High Pass and OFF for Full Range.
2. Using the Freq (Hz) Control, select the desired frequency. If the desired frequency exceeds the range of the Freq (Hz) Control, press the Crossover Frequency Multiplier Switch to increase the value by a multiplier of 10 (For example, 55Hz x 10 = 550Hz or 550Hz x 10 = 5.5kHz.).
SETTING THE BASS BOOST
1. Initially set the Bass Boost control to its full
left position (i.e. 0dB).
2. Listen to a variety of music styles (e.g. Rock, Rap, etc.) and slowly increase the Bass Boost control until a noticeable increase in low bass response is perceived.
3. Slowly adjust the Bass Boost control (up or down) to realize the best bass response.
CAUTION: If you hear a "pop" (due to speaker over-excursion), lower the Bass Boost to prevent speaker damage. If the system sounds muddy and distorted (due to amplifier clipping), lower Bass Boost to avoid shutdown from overheating.
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CERWIN-VEGA! EXL 200.2 AND EXL 350.2 POWER SYSTEM AMPLIFIER
Problem: No Audio. Solution:
• Low or no remote turn-on voltage. Check remote connections at amplifier and source unit.
• Blown amplifier fuse. Replace with new fast­blow fuse (same rating).
•Power wires not connected. Check battery and ground wiring at amplifier; also check battery connections.
• Speaker leads shorted. Check speaker continuity to ground, it should not show a common ground.
• Speakers not connected or are blown. Check speaker connections at amplifier, measure coil impedance.
Problem: Audio cycles on and off. Solution: Thermal protection circuits are
shutting amplifier off. Check location for adequate ventilation; consult an authorized Cerwin-Vega! dealer.
Problem: Distorted audio. Solution: Gain is not set properly,or damaged
speaker cones. Review Setting Gain; inspect each speaker cone for signs of damage (i.e. frozen cone, burning smell, etc.)
FINAL SYSTEM CHECKS
TROUBLESHOOTING
1. Start the engine and turn on the source unit.
After a two-second delay, slowly increase the Volume Control and listen to the audio. If you hear any noise, static, distortion or no sound at all, check the connections,and also refer to Troubleshooting. Depending on your system design, the levels may become quite loud even at low Volume Control settings. Until you get an "audio feel" of the system's power, use care when adjusting controls.
2. Turn the Balance Controls to their extreme positions and listen to the results. Audio imaging should match control settings (audio from the left speaker when balance is left).
3. Increase the volume and verify that the amplifier reproduces audio (at full frequencies) without distortion. If you hear distortion, check the connections and verify that the Gain Control is set correctly.Another possibility is damaged speakers or under­powered speakers. Once again refer to Troubleshooting for additional help.
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OPERATION AND INSTALLATION MANUAL
TROUBLESHOOTING (cont.)
EXL200.2 EXL 350.2 Frequency Response 20Hz ~ 20kHz 20Hz ~ 20kHz Signal Noise Ratio >100dB >100dB THD .05% all channels driven .05% all channels driven Input Sensitivity Low Level 250mV ~ 5 V 250mV ~ 5V 4-Ohm Stereo Output 75w x 2 @ .05% THD 110w x 2 @ .05% THD 2-Ohm Stereo Output 100 x 2 @ .05% THD 175w x 2 @ .05%THD 4-Ohm Bridged Power 200 x 1 @ .05% THD 350 x 1 @ .05% THD Dimensions 2-1/2"H x 9-1/2"W x 10" L 2-1/2” H x 9-1/2”W x 13-1/4” L Current Consumption at output
@ max power 28A @ 200 Watts 43A @ 382 Watts
Problem: Audio lacks punch. Solution: Speakers wired incorrectly, which
causes cancellation of bass frequencies. Check polarity of wires from amplifier to each speaker as defined by the system design.
Problem: Amplifier fuse keeps blowing. Solution: Incorrect wiring or short circuit.Review
Installation and check all wiring connections.
Problem: Whining or ticking noise in the audio with engine on. Solution: Amplifier is picking up alternator noise or radiated noise. Turn down input gain; move audio cables away from power wires. Check power and ground connections on amplifier; install an in-line noise filter on source unit's power wire; check alternator and/or voltage regulator; test for weak battery or add water to battery.
PRODUCT SPECS
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9340 De Soto Ave., Chatsworth, CA 91311
Phone: 1-805-584-9332 • Fax: 1-805-583-0865 • Email: info@cerwin-vega.com
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