D250LS - Receiver Russound - Free user manual and instructions
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| Product Type | 2-Channel Power Amplifier with Local Source Switching |
| Brand | Russound |
| Model | D250LS |
| Continuous Power Output | 50W per channel at 8 ohms, 75W per channel at 4 ohms, 150W bridged mono at 8 ohms |
| Total Harmonic Distortion (THD+N) | <0.3% from 20Hz to 20kHz at 50W into 8 ohms |
| Signal-to-Noise Ratio | >112 dB A-weighted |
| Frequency Response | 20Hz to 20kHz ±0.4dB |
| Input Sensitivity | 70mV for 1W at 8 ohms, 550mV for 50W at 8 ohms |
| Input Impedance | 47k ohms (Line Input) |
| Voltage Gain | 32dB |
| Delay Time | 5 seconds to 5 minutes (adjustable) |
| Input Trigger | 12VDC, 10k ohms |
| Output Trigger | 12VDC, 100mA max |
| Power Requirements | 100VAC to 240VAC, 50/60Hz (autoswitching), 2.5A |
| Fuse Rating | T3.15AL 250V |
| Standby Power | ≤0.5 Watts |
| Dimensions (W x D x H) | 8.5" x 10.5" x 1.75" (21.59 x 26.67 x 4.45 cm) |
| Weight | 4.65 lbs (2.1 kg) |
| Mounting Options | Tabletop, wall mount, rack mount (single or dual in 1U) |
| Inputs | Line In (sensing), Amplified In (sensing), Video In (sensing), Default In (pass-through) |
| Outputs | Speaker A and B (parallel), 12V Trigger Out |
| Protection | Thermal overload protection, short-circuit protection |
| Warranty | 2 years (parts and labor) |
| Recommended Use | Distributed audio zone amplifier with local source override |
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USER MANUAL D250LS Russound
2-Channel Power Amplifier with Local Source Switching Installation Manual
SAFETY INSTRUCTIONS
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE THE COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
The lightning fl ash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated dangerous voltage within the product's enclosure that may
be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature
accompanying the appliance.
Safety Instructions
- Read Instructions - All the safety and operating instructions should be read before the appliance is operated.
- Retain Instructions - The safety and operating instructions should be retained for future reference.
- Heed Warnings - All warnings on the appliance in the operating instructions should be adhered to.
- Follow Instructions - All operating and user instructions should be followed.
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Water and Moisture - The appliance should not be used near water; for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool. The apparatus shall not be exposed to dripping or splashing liquids and no objects filled with liquids, such as vases, shall be placed on the apparatus. Do not touch the appliance with wet hands. Do not handle the appliance or power cord with wet or damp hands. If water or any other liquid enters the appliance cabinet, take it to qualified service personnel for inspection.
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Cleaning - The appliance should be cleaned only as recommended by the manufacturer. From time to time you should wipe off the front and side panels and the cabinet with a soft cloth. Do not use rough material, thinners, alcohol or other chemical solvents or cloths since this may damage the finish or remove the panel lettering.
- Ventilation - The appliance should be situated so that its location or position does not interfere with its proper ventilation. For example, the appliance should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings, or placed in a built-in installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Place the unit in a well-ventilated location, leaving at least 2 inches (5 cm) of clearance on all sides, top and rear of unit for air flow. If ventilation is blocked, the unit may overheat and malfunction.
- Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) that produce heat.
- Grounding or Polarization - Precaution should be taken so that the grounding or polarization means of an appliance is not defeated.
- 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, receptacles, and the point where they exit from the appliance.
- Power Sources - The appliance should be connected to a power supply only of the type described in the operating instructions or as marked on the appliance.
- Main Power Disconnect - The power switch is a single-pole switch. When the switch is in the "Off" position, the appliance is not completely disconnected from the main power. The main power plug is used as the disconnect device and shall remain readily operable. When installing the product, ensure that the plug is easily accessible.
- Non-Use Periods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time.
- Attachments - Only use attachments/accessories specified by the manufacturer.
- Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer. An
appliance and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the appliance and cart combination to overturn.
- Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by the manufacturer.
- Location of the Amplifier - Do not mount this unit under a kitchen cabinet. Do not expose the amplifi er to direct sun light or heating units as the amplifi er internal components' temperature may rise and shorten the life of the components. Avoid damp and dusty places.
- Object and Liquid Entry - Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through the openings.
- Servicing - The user should not attempt to service the appliance beyond that described in the operating instructions. All other servicing should be referred to qualified service personnel.
- Damage Requiring Service - The appliance should be serviced by qualified service personnel when: A. The power supply cord or the plug has been damaged; B. Objects have fallen, liquid has been spilled into the appliance; C. The appliance has been exposed to rain; or D. The appliance does not appear to operate normally; or E. The appliance has been dropped or the enclosure is damaged.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of or more of the following measures: reorient or relocate the receiving antenna; increase the separation between the equipment and receiver; connect the equipment into an outlet on a circuit different from that to which the receiver is connected, or consult the dealer or an experienced radio/TV technician for help.
The Russound D250LS is a 2-channel power amplifier with automatic local source switching capability. The D250LS allows a local source (e.g., PC or TV in the bedroom) to automatically override the speakers in that particular zone of a distributed audio system. This can be accomplished with a variety of input/ trigger options for versatility in many different applications.
The D250LS is rated at 50 watts per channel into 8 ohms and 75 watts per channel into 4 ohms. With the Stereo/Bridge Mono switch in the Bridge Mono position, both amplifi er channels are combined for a higher powered mono output. In bridged mode the D250LS is rated at 150 watts of power into a single 8-ohm load. Each amplifi er output channel incorporates robust protection circuitry for safety and reliability under extreme circumstances.
Thermal Protection
All Russound amplifiers are designed with special circuitry to safeguard the amplifier under a thermal overload condition. Thermal protection mode can only engage when the unit has been run at high volume for extended periods of time without adequate ventilation and/or when speaker impedances are below the minimum levels for the amplifier. If this fault occurs, turn off the amplifier, and check that the speaker impedance rating is above the minimum rating. Also check for adequate ventilation around the amplifier and make adjustments if necessary.
Once the unit has cooled to safe operating temperatures, the amplifier may be powered back on.
Protection Circuitry
All Russound amplifiers are designed with special circuitry to safeguard the amplifi er under a short-circuit condition. A faulty speaker can also cause a short circuit condition. If this fault condition occurs, turn off the amplifier and check speakers for short circuit conditions when appropriate.
FRONT AND BACK PANEL FEATURES
Power LED
On start-up, the first LED lights red to show power on. When the amplifier goes into standby, the LED will light amber.
Power Switch
Turns the amplifier on/off. This switch does not disconnect the main power feed from the amplifier; this requires that the power cord be unplugged from the outlet.
Line Input
The Line audio input is a sensing input that will activate the amplifier when an audio signal from a source is present. Only the Left input is used for bridged mode operation.
Video Input
The Video Input is a sensing input that activates the D250LS when a video signal is present.
Gain Controls
Left and Right gain controls independently adjust the sound level for each channel. When used in the bridged mode only the Left control is used.
Delay Time
Muting delay can be adjusted from about 5 seconds to 4.5 minutes. When an audio signal is not present, this delay setting will automatically switch the amp to the Default input mode after the preset period of time.
12VDC Trigger In/Out
The 12V Trigger In controls the amplifi er switching from the default input (distributed audio system) to a local source. The Trigger Out provides 100mA 12V max. This can be used to drive other 12V triggered devices. The delay and audio sensing are bypassed when the 12V trigger input is used.
Stereo/Bridge Mono Switch
Sets the pair of amplifier channels for stereo or bridged mono operation.
Default Input
Default Input is a pass-through input for the whole-house system. If no signal is input to the "Line In" or the "Amplified In," the Default input will be connected directly to the A and B speaker output.
Amplifi ed In
The amplifi ed In is a sensing input that is used to amplify a high-level signal from a small amplifi er or TV.
Speaker A/B Outputs
The A and B speaker outputs are in parallel to the amplifier output. The minimum load in stereo mode is 4 ohms. This can be used to drive up to 2 pairs of 8-ohm speakers or 1 pair of 4-ohm speakers. The minimum load impedance for bridged mode operation is 8 ohms, Speaker B only.
Fuse Receptacle
Holds a replaceable fuse for AC power input connection. Fuse rating for North America and for Europe is T3.15AL 250V.
AC Input
The autoswitching AC voltage input for the North American model is 100-125 VAC at 60Hz (European model, 220-240VAC at 50Hz). This receptacle accepts a 3-prong IEC 320 type connector. A detachable 3-terminal power cord is included.
The D250LS amplifi er can be set on a tabletop or wall-mounted with screws or hook and loop tape. Rack-mounting ears are included to install either one D250LS in a 1U space or two units in a 1U space.
Wall Mounting
The amplifi er comes with two wall mounting brackets and attachment screws. There are two attachment locations on each side of the amplifi er for more mounting options. Hook and loop tape can be used as well.
Rack Mounting
The rack mounting ears support either one or two amps in a single rack space.
To install one amplifier in a rack space, use the long ear and one of the wall-mount brackets. The unit can be mounted either to the left or right side of the rack space.
For two units in one rack space, use the fl at plate to support and connect them, and use one wall-mount bracket on each outer side of the units.
When using the two-unit mounting option, the small side ventilation slots on the amps will be next to one another in the middle of the rack space. To avoid overheating situations, make sure the copious top panel ventilation holes are not blocked.
The D250LS can be used as a single-source two-channel zone amplifier, or as a local-source amplifier that automatically switches between a default source (e.g., a whole-house audio distribution system) and a local source (e.g., a television set in the bedroom or a PC in the office).
Connections for local source override of whole-house system
When the amplifier is in bridged mode operation, both the left and right channels are combined for a higher powered mono output.
For bridged amplifier operation, turn off the power to the amplifier and connect an 8-ohm minimum load to the Speaker B output.
Following the Bridge Mode markings in red on the back of the amplifier: Connect the negative lead (-) of the speaker cable to the R+ terminal. Connect the positive lead (+) of the speaker cable to the L+ terminal. Set the Stereo/ Bridge Mono switch to Bridge Mono, connect the Line In feed from a source to the Left Line In connection only and restore power to the amplifier.
Connections for bridged mode operation
DUAL UNIT SETUP
The D250LS can be used in a side-by-side configuration using the optional rack mounting kit. This feature makes it easy to add amplification to two controllers or two zones (e.g., on the MCA-C5 controller).
The example shown features two D250LS amps connected to an MCA-C5, zones 7 and 8. One amp adds power through bridged mode for an outdoor zone. The other amp powers a pair of speakers in a zone for normal operation.
Configuration showing 2 D250LS Amplifiers using optional rack mount kit
D250LS Amplifi er
Continuous Output Power: 50W per channel at 8 ohms
(<0.3% THD+N) @ 1kHz 75W per channel at 4 ohms
150W at 8 ohms, 2 channels bridged
Distortion THD+N: <0.3% from 20Hz to 20kHz for 50W into 8 ohms
<0.05% from 20Hz to 20kHz for 1W into 8 ohms
Signal-to-Noise Ratio: >112dB A-weighted
Channel Separation: >60dB @ 1 kHz
Frequency
Response: 20Hz to 20KHz +/- 0.4dB
Input Sensitivity: 70mV for 1W at 8 ohms
550mV for 50W at 8 ohms
Input Impedance: 47kohms Line Input
Voltage Gain: 32dB
Delay Time: 5 seconds to 5 minutes
Input Trigger: 12VDC 10kohms
Output Trigger: 12VDC 100mA max
Power Requirements: North American and European Models:
(Autoswitching Power Supply) 100VAC to 240VAC 50/60Hz 2.5A
IEC 320 type connector with 3 terminal
detachable power cord
Fuse Rating: T3.15AL/250V
Standby Power: ≤0.5 Watts
Dimensions: 8.5" W x 10.5" D x 1.75" H
(21.59 x 26.67 x 4.45 cm)
Weight: 4.65 lbs. (2.1 kg)
The D250LS Amplifi er meets EU Standby Power Requirements
Warranty
The Russound D250LS Amplifier is fully guaranteed against all defects in materials and workmanship for two (2) years from the date of purchase. During this period, Russound will replace any defective parts and correct any defect in workmanship without charge for either parts or labor.
For this warranty to apply, the unit must be installed and used according to its written instructions. If service is necessary, it must be performed by Russound. The unit must be returned to Russound at the owner's expense and with prior written permission. Accidental damage and shipping damage are not considered defects, nor is damage resulting from abuse or from servicing by an agency or person not specifically authorized in writing by Russound.
This Warranty does not cover:
- Damage caused by abuse, accident, misuse, negligence, or improper installation or operation
• Power surges and lightning strikes
• Normal wear and maintenance
• Products that have been altered or modified - Any product whose identifying number, decal, serial number, etc. has been altered, defaced or removed.
Russound sells products only through authorized Dealers and Distributors to ensure that customers obtain proper support and service. Any Russound product purchased from an unauthorized dealer or other source, including retailers, mail order sellers and online sellers will not be honored or serviced under existing Russound warranty policy. Any sale of products by an unauthorized source or other manner not authorized by Russound shall void the warranty on the applicable product.
Damage to or destruction of components due to application of excessive power voids the warranty on those parts. In these cases, repairs will be made on the basis of the retail value of the parts and labor. To return for repairs, the unit must be shipped to Russound at the owner's expense, along with a note explaining the nature of service required. Be sure to pack the unit in a corrugated container with at least three (3) inches of resilient material to protect the unit from damage in transit.
Before returning a unit for repair, call Russound at (603) 659-5170 for a Return Authorization number. Write this number on the shipping label and ship to: Russound, ATTN: Service, 5 Forbes Road, Newmarket, NH 03857
Due to continual efforts to improve product quality as new technology and techniques become available, Russound/FMP, Inc. reserves the right to revise system specifications without notice.
RRussound®
D250LS
2-Channel Power Amplifier with Local Source Switching Installation Manual
©2010 Russound. All rights reserved.
All trademarks are the property of their respective owners.
Specifications are subject to change without notice.
Russound is not responsible for typographical errors or omissions.
Russound, Inc.
5 Forbes Road, Newmarket, NH 03857
tel 603.659.5170 · fax 603.659.5388
email: tech@russound.com www.russound.com
28-1357
Rev. 2
11/10/10
- SAFETY INSTRUCTIONS
- Thermal Protection
- Protection Circuitry
- FRONT AND BACK PANEL FEATURES
- Power LED
- Power Switch
- Line Input
- Video Input
- Gain Controls
- Delay Time
- 12VDC Trigger In/Out
- Stereo/Bridge Mono Switch
- Default Input
- Amplifi ed In
- Speaker A/B Outputs
- Fuse Receptacle
- AC Input
- Wall Mounting
- Rack Mounting
- DUAL UNIT SETUP
- D250LS Amplifi er
- Warranty
- RRussound®
- D250LS
- 2-Channel Power Amplifier with Local Source Switching Installation Manual
Brand : Russound
Model : D250LS
Category : Receiver