CHT-8R CHT-10R CHT-12R and CHT-15R TM TM TM TM User's Manual DSP-Controlled Home Theater Subwoofer CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN Caution Toreducetheriskofelectricshock,donotremovecover(orback).Nouser-serviceablepartsinside.Refer servicingtoqualifiedservicepersonnel. The lighting flash with arrowhead symbol is intended to alert the user to the presence of uninsulated "dangerousvoltage"withintheproduct'senclosurethatmaybeofsufficientmagnitudetoconstitutearisk ofelectricshocktopersons. The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance(servicing)instructionsintheliteratureaccompanyingthesubwoofer. 1. 2. 3. 4. 5. 6. 7. 8. Read Instructions -- All safety and operating instructions should be read before the subwoofer is operated. Retain Instructions -- The safety and operating instructions should be retained for future reference. Heed Warnings -- All warnings on the subwoofer and in the operating instructions should be adhered to. Follow Instructions -- All operating and use instructions should be followed. Water and Moisture -- The subwoofer should not be used near water -- for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool or the like. Carts and Stands -- The subwoofer should be used only with a cart or stand recommended by the manufacturer. Wall or Ceiling Mounting -- The subwoofer should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation -- The subwoofer should be situated so that its location or position does not interfere with its proper ventilation. For example, the subwoofer 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. Heat -- The subwoofer should be situated away from heat sources such as radiators, heat registers, stoves, or other subwoofers that produce heat. Power Sources -- The subwoofer should be connected to a power supply only of the type described in the operating instructions or as marked on the subwoofer. 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 at which they exit from the subwoofer. "Caution: To prevent electrical shock, match wide blade of plug to wide slot, fully inserted." "Attention: Pour eviter les chocs electriques, introduire lame la plus large de la fiche dans la borne correspondante de la prise et pousser jusqu' au fond". Cleaning -- The subwoofer should be cleaned only as recommended by the manufacturer. Nonuse Periods -- The power cord of the subwoofer should be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry -- Care should be taken so that objects do not fall and liquids are not spilled onto the enclosure. Damage Requiring Service -- The subwoofer should be serviced by qualified service personnel when: a. The power-supply cord or plug has been damaged. b. Objects have fallen or liquid has been spilled into the subwoofer. c. The subwoofer has been exposed to rain. d. The subwoofer does not appear to operate normally or exhibits a marked change in performance. e. The subwoofer has been dropped or damaged. Servicing -- The user should not attempt to service the subwoofer beyond what is described in the operating instructions. The apparatus shall not be exposed to dripping or splashing water and that no objects filled with liquids, such as vases be placed on the apparatus. The disconnect device (the appliance inlet) shall remain readily operable (easily assessible). All other servicing should be referred to qualified service personnel. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 1 Congratulations! Congratulations on your purchase of a Velodyne Classic Home Theater (CHT-R) subwoofer. This system represents the state-of-the-art in low frequency reproduction. Read and follow the instructions below to insure safe and proper system operation. Warning! To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all warnings on the equipment itself. There are no user serviceable parts inside. Please refer all service questions to your authorized Velodyne dealer. Prior to Installation Please unpack the system carefully. Remove all staples used to seal the carton as they can scratch the cabinet. Please save the carton and all packaging materials for future use. Record the serial number in the space provided on the warranty card for future reference. Product Features and Controls · · · · · · · · · · · · · · · · DSP-controlled 4 selectable presets for customized listening mode Night-mode setting Mute control Built-in 160 watt (RMS) power amplifier (CHT-8R) Built-in 175 watt (RMS) power amplifier (CHT-10R) Built-in 200 watt (RMS) power amplifier (CHT-12R) Built-in 600 watt (RMS) power amplifier (CHT-15R) Adjustable (40 to 120 Hz) low-pass crossover with Subwoofer Direct setting Speaker-level inputs and outputs 85 Hz high-pass crossover Line-level inputs Signal sensing auto turn on/off with bypass option Variable volume control Selectable phase control (0, 90, 180, or 270 degrees) Dual staggered low-pass crossover; 12 dB/octave initial, 24 dB/octave ultimate continued. . . 2 · · · Anti-clipping circuit Over excursion protection Slot loaded design Installation Your new subwoofer system provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system. Remember to perform all installation procedures with system power turned off. 80 Hz LOW-PASS CROSSOVER DIRECT 40 Hz 1 UP 2 VOLUME DOWN CHT-R Series ACTIVE AUTO ON/OFF 3 R INACTIVE SERIAL # L VELODYNE ACOUSTICS, INC. WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK. DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. 4 OUTPUT CAUTION INPUT LFE IN 100 Hz RISK OF ELECTRIC SHOCK DO NOT OPEN 5 6 AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR DOUBLE INSULATION - WHEN SERVICING USE ONLY IDENTICAL REPLACEMENT PARTS HIGH-PASS CROSSOVER 80 Hz SPEAKER LEVEL INPUT POWER ON 7 RIGHT LEFT 8 SPEAKER LEVEL OUTPUT 230V~ 50Hz F 1A L OFF Figure 1. CHT-R Rear Panel Connections 3 Rear Panel Connections Figure 1 shows the connections on the rear panel of the CHT-R. Following are brief descriptions of the connections described in Figure 1. More detail on these connections can be found on the next page. (1) LOW-PASS CROSSOVER Use this knob to select the high-frequency range at which you wish to cut off the signal to the subwoofer. When the knob is turned all the way to the left, the Subwoofer Direct feature is invoked and the subwoofer plays all frequencies up to 200 Hz. (2) VOLUME Control This control allows you to balance the output from the subwoofer to the main speakers in your system. This control should be set to achieve similar volume level from between both the main speakers and subwoofer. When pressing volume up or down, the speed at which the power light blinks indicates subwoofer volume - the faster the blinking, the louder the unit plays. Note: Volume is also controllable by using the supplied remote. (3) AUTO ON/OFF Switch Use this switch to select between auto-on (active) and constant on (inactive) operation. (4) LINE OUTPUT Connect these jacks to the LINE IN preamp input to use the CHT-R's internal high pass crossover. See below for a more detailed explanation of this crossover. (5) LINE INPUT/LFE Input Connect these jacks to the LINE OUT preamp output, LFE output, or subwoofer output jacks of your receiver/processor. If using the LFE output from your receiver or processor, plug the single cable into the "L" ­ LFE input or, for more signal, use a "Y" connector and feed the signal into both "R" and "L" inputs. continued. . . 4 (6) HIGH PASS CROSSOVER Switch This switch selects the frequency for the high pass crossover. This crossover is functional on both line and speaker-level outputs. Smaller speakers with limited low frequency output may perform better using the higher 100 Hz setting that will reduce the low frequencies sent to them. Larger speakers with greater low frequency output may be able to handle the 80 Hz setting without strain. (7) SPEAKER LEVEL INPUT Terminals Connect these input terminals to the speaker output terminals of your amplifier or receiver. If you use this method of connection, when you go to the receiver speaker set up menu, make sure you select the large speaker option. (8) SPEAKER LEVEL OUTPUT Terminals Sends a crossed-over speaker-level signal to the front speakers. See below for a more detailed explanation of this crossover. Rear Panel Connections ­ Detailed Explanation Your new subwoofer is equipped with both speaker-level and linelevel inputs. Use the RCA/Phono type "INPUT" jacks when connecting your subwoofer to a pre-amp, signal processor, or line-level crossover. The "SPEAKER LEVEL INPUT" jacks connect directly to the speaker outputs of an integrated amplifier or receiver. Your amplifier section will notice no additional loading effects when you use these inputs because of their high impedance. Note: Do not use both the RCA/Phono "INPUT" connections and "SPEAKER LEVEL INPUT" connections simultaneously. Low-Pass Crossover Both sets of inputs sum the left and right channels together and the resulting signal is passed through an adjustable low-pass crossover before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer's frequency response from 40 to 120 Hz. The subwoofer's response will begin rolling off above the frequency you set this control to. 5 You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100-120 Hz) than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set lower, such as 80 Hz. Subwoofer Direct Subwoofer Direct is a setting on the low-pass crossover knob and will allow frequencies up to 200 Hz into the subwoofer. See below for a more detailed explanation of this feature. Speaker Level Output/Line Level Output When connected in this fashion, your satellite speakers will be crossed over at 80 Hz. This removes the lower bass from your satellites, enabling them to do a better job reproducing high frequencies and giving your receiver's amp more headroom (up to 50% more power). You may also connect your satellites directly to your receiver or amplifier along with the subwoofer if you wish to bypass this crossover. Caution!!! To avoid damage to your main amplifier, be sure to maintain correct polarity when making all connections. Red (positive) to red, and black (negative) to black. Be sure that all connections are tight, and that there are no loose strands or frayed wires. Power Switch The master power switch is located on the lower right half of the unit. This rocker style switch is the main on/off for the unit. This switch should be set to position 1 for on (up), 0 for off (down). A Word About Your Receiver's Crossover and the CHT-R Crossover Your Velodyne CHT-R subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover (controlled by the dial on the back panel). Many home theater processors/receivers (Dolby Digital®, DTS®, THX®) have a "subwoofer out" jack that performs continued. . . 6 this same function and are designed to be used with a powered subwoofer. In these installations, you may want to bypass the crossover in either the processor or the Velodyne subwoofer. In some cases, you may want to use BOTH crossovers. To do this, you can use both your processor's crossover and the one internal to the Velodyne sub. You should stagger the frequencies (i.e., 120 Hz subwoofer, 80 Hz processor) for best results. To bypass the subwoofer's internal crossover when the unit is being fed a low pass signal from another crossover, simply locate the knob marked "LOW-PASS CROSSOVER" on the rear panel of the subwoofer and turn it counterclockwise to the "DIRECT" position. This will eliminate the internal crossover from the signal path. Note: If not using an external crossover, you should use the built-in crossover for optimal performance. When using a single RCA sub out from the processor, it does not matter which line level input (L/R) is used. Interconnect Cables When installing your new Velodyne subwoof ...