Cerwin-vega Sl-28 Quad Center Channel Speaker Owners Manual

Cerwin-Vega SL-28 Quad Center Channel Speaker

INSTRUCTIONS

• Read instructions – All the safety and operating instructions should be read before the product is operated.
• Retain instructions – The safety and operating instructions should be retained for future reference.
• Heed Warnings – All warnings on the product and in the operating instructions should be adhered to.
• Follow Instructions – All operating and use instructions should be followed.
• Cleaning – Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.
• Attachments – Do not use attachments not recommended by the product manufacturer as they may cause hazards.
• Water and Moisture – Do not use this product near water-for example, near a bath tub, wash bowl, kitchen sink, or laundry tub; in a wet basement; or near a swimming pool; and the like.
• Accessories – Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child or adult and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer’s instructions and should use a mounting accessory recommended by the manufacturer.
• Cart – A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart combination to overturn.
• Ventilation – slots and openings in the cabinet are provided for ventilation to ensure reliable operation of the product and to protect it from overheating. These openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or another similar surface.
• This product should not be placed in a built-in installation such as a bookcase or rack unless proper ventilation is provided or the manufacturer’s instructions have been adhered to.
• Power Sources – This product should be operated only from the type of power source indicated on the marking label and connected to a MAINS socket outlet with a protective earthing connection. If you are not sure of the type of power supply to your home, consult your product dealer or local power company.
• Power-Cord Protection – Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.
• Mains Plug – Where the mains plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable.
• Lightning – For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges.
• Overloading – Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.
• Flame Sources – No naked flame sources, such as lighted candles, should be placed on the product.
• Object and Liquid Entry – Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.
• Loudspeakers – Excessive sound pressure from loudspeakers can cause hearing loss.
• Damage Requiring Service – Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:
  • When the power-supply cord or plug is damaged.
  • If liquid has been spilled, or objects have fallen into the product.
  • If the product has been exposed to rain or water.
  • If the product does not operate normally by following the operating instructions. Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the product to its normal operation.
  • If the product has been dropped or damaged in any way.
  • When the product exhibits a distinct change in performance-this indicates a need for service.
• Replacement Parts – When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.
• Safety Check – Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition.

Introduction

Welcome to the family! First off, you have great taste in loudspeakers. At Cerwin-Vega!, deep bass and great highs are a way of life. Nice to know you share our passion for music. Our company has been in business since 1953. And we consider you to be the newest member of the family.

Placement

Placement (SL-5M bookshelf speakers)
For left and right channels, place the speakers so that the tweeters are at ear level (i.e., normal seated position) and are on either side of the video receiver or monitor. You can place the speakers on bookshelves or use speaker stands. For use as a rear channel surround speaker, avoid corners of the room.

Placement (SL-45C, SL-25C center channel speakers)
The Center Channel Speaker should be in the middle between the front left and right main speakers and face toward the viewing/listening area. The tweeter should be at ear level (i.e., normal seated position).

Placement (SL-8, SL-28, SL-12, SL-15 floor standing speakers)
For left and right front channels, place the speakers so they are equal distance from each other and the ideal listening position (see illustration). The tweeter should be at ear level (i.e., normal seated position).

Installation

Wiring the System: All SL Series passive speakers feature flexible 5-way binding posts to support connections using bare wires (most popular method), split spade lug connectors, pin connectors, banana plugs and dual banana plugs *(SL-12 and SL-15 models are not compatible with standard dual banana plugs).

Connecting the System

• STEP 1: Determine the type of speaker wire connection that will be made. The most common connection is using bare wire. Strip 1/2” to 5/8” (12 to 15mm) of insulation from the ends of the speaker cable to expose the bare wire; then twist the bare wires tightly.
• STEP 2: Unscrew the binding-post cover to expose a hole in the metal post. Insert the bare wire or pin connector into the hole noting that the positive terminal on the speaker connects to the positive terminal on the amplifier. The negative terminal on the speaker connects to the negative terminal on the amplifier. For split spade lug connections, simply place the ‘U’ shape against the metal post. For banana plugs, do not unscrew the binding post cover; remove the plastic cover and simply insert into the top of the posts.
• STEP 3: Screw the binding-post cover so that the connection is securely touching the metal post and will not fall out.

Placement Subwoofer

The placement of the SL-10S subwoofer can greatly affect the sound that is produces. In general, a good bass sound can be obtained by installing the subwoofer in a front corner, or at one-third the width of the wall, as shown. Experiment with different positions to find your listening preference.

Installation SL-10s Subwoofer

Wiring the System: The SL-10S Subwoofer features a wide variety of inputs to support all different types of audio equipment. The most popular types of subwoofer connections are listed below. Determine the connection and obtain the correct signal cable. Choose one option only for hook-up. Do not hook up more than one option.

Subwoofer Features

• LFE IN: Mono “low frequency effects” connection. Use this input if receiver preamp/processor has a dedicated LFE or subwoofer OUT. Refer to the owner’s manual provided by your receiver/preamp/processor manufacturer. (see figure 1, back cover for hook-up)
• LINE IN: Stereo input to subwoofer. Connect to “LINE-OUT”, “MAIN-OUT or PREAMP-OUT”, of your receiver/preamp/processor using a dual RCA patchcord (not supplied). Refer to the owner’s manual provided by your receiver/ preamp/processor manufacturer.
• VOLUME CONTROL: Controls volume level of subwoofer. Used to balance the output of the subwoofer with the main speaker output.
• LOW-PASS FREQ: The crossover control allows you to adjust the upper limit of the subwoofer’s frequency response from 50 to 130 Hz. The subwoofer’s response
  will begin rolling off above the set frequency. Set the LOW-PASS FREQ to the low frequency limit listed in the main speaker manual and consult the A/V receiver manual to determine if there are any recommendations (as some may already feature a built-in crossover).* (NOTE: LOW-PASS FREQ control does not function when the LFE input is used.)
• PHASE: This switch allows you to compensate for having the subwoofer in a different location than the main speakers. This control allows the signal to be phase adjusted 180 degrees so the output of the subwoofer will match the phase of the main speakers. Engage the PHASE switch to “180”. At the listening position, listen to the midbass output. If it sounds weak, set PHASE back to “0”. Listen serveral times in each switched position to ensure the setting.
• STANDBY LED: Indicator of automatic standby state. The LED will be ‘GREEN’ when the audio signal is present and the subwoofer is on. The LED will be ‘RED’ when the subwoofer is in standby condition (no audio signal present after approximately 30 minutes.
• VOLTAGE SELECTION: User-switchable voltage selection for use with 110-120V/220-240V AC. To select a different voltage, use a flat head screwdriver to reposition the switch to the desired voltage and change the fuse to the appropriate rating. WARNING: Severe damage may result from improperly selected voltage. Make sure you know the voltage requirement of the country you are in before attempting to connect this subwoofer to AC power.
• POWER: Two-position power switch. In the “ON” mode, the subwoofer’s amplifier is automatically activated if an audio signal is present and will automatically become inactive when there is no audio signal present after approximately 30 minutes. In the “OFF” mode, power is shut off to the amplifier.
• POWER CORD RECEPTACLE: Connect IEC cord to this receptacle (supplied with the SL subwoofer). If the cord supplied does not fit an available AC outlet, purchase the correct AC cord from your audio dealer or an electrical supply store. REPLACEABLE FUSE: Protects system from overload, replace with fuse rating as indicated on amplifier panel at fuse location. The fuse holder is located at the AC receptacle.

Troubleshooting

NO POWER – The power switch needs to be in the ‘on’ position. The power cord should be firmly placed into the IEC socket on the rear of subwoofer and into the AC outlet. The LED on the rear of the subwoofer will illuminate when the power switch is ‘on’. Verify the subwoofer is set to the correct AC voltage level and check that the fuse has not blown.

NO SOUND – The subwoofer may be in a standby condition. The standby engages after 30 minutes of no activity. To take the subwoofer out of the standby condition, simply play audio to the input of the subwoofer.

LEVELS & SOURCE – Verify media source is playing. For subwoofers, you will need to make sure the media is consists of low frequency sounds such as drums, beats or explosions. Check the levels on the volume and bass EQ are not set to minimum.

BAD SOUND

Verify the audio connection between the A/V receiver and subwoofer is not adjacent to any equipment that can cause interference (air-conditioner, motors, and light dimmers).
Adjust the Low Pass Freq and Volume until the desired sound is heard. It is advised to start at 80Hz on the Low Pass Freq knob and slowly bring the Volume knob up.
Any hum or buzzing when no media is playing may be due to groud loop issues or a dirty power source. Disconnect the audio input cable and try a different power source in another room to confirm it is not the subwoofer. Plugging electronic equipment into different AC circuits increases the chance of a group loop.

FAQS