Klipsch ka 1000 thx owners manual
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KA-1000-THX AMPLIFIER I M P O R TA N T S A F E T Y IN S T R U C T IO N S 1. READ these instructions. 2. KEEP these instructions. 3. HEED all warnings. 4. FOLLOW all instructions. 5. DO NOT use this apparatus near water . 6. CLEAN ONL Y with dry cloth. 7. DO NOT block an y ventilation openings. Install in accordance with the manufacturer's instructions. 8. DO NOT install near an y heat sources such as radiators, heat reg isters, stoves, or other a pparatus (including amplifiers) that produce heat. 9 . DO NOT defea t the safet y pu rp ose of the p olar ized or gr oun din g type pl ug. A pol ari zed p lu g has tw o b lades w ith one wid er than th e oth e r. A gr ound in g ty p e plu g h as two bl ades an d a th ir d gr ound in g pr ong . The wi der b lad e o r the thir d p ron g are p rovid ed for your saf ety . I f th e provi ded p lug does n o t fit in to your outlet, con sul t an e lectr ic ian for repl acement of th e o b solete outlet. 10. PROTECT the power cord from being walked on or pinched, particularly at plugs, convenience receptacles, and the point where they exit from the a pparatus. 11. ONL Y USE attachments/accessories specified b y the manufacturer . 12. USE only with a cart, stand, tripod, bracket, or ta ble specified by the manufacturer , or sold with the a pparatus. When a cart is used, use caution when moving the cart/a ppa - ratus combination to a void injury from tip-over . 13. UNPLUG this a pparatus during lightning storms or when unused for long periods of time. 14. REFER all ser vicing to qualified ser vice personnel. Ser vicing is required when the apparatus has been dama ged in any wa y , such as power -supply cord or plug is damaged, liquid has been spilled or objects ha ve fallen into the apparatus, the a pparatus has been exposed to rain or moisture, does not opera te normall y , or has been dropped. This symbol indica tes that there are important operating and maintenance instructions in the literature accompan ying this unit. This symbol indicates that dangerous volta ge constituting a risk of electric shock is present within this unit. W ARNING: T o reduce the risk of fire or electrical shock, do not expose this apparatus to rain or moisture. W ARNING: V olta ges in this equipment are hazardous to life. No user -ser viceable parts inside. Refer all servicing to qualified ser vice personnel. CAUTION: Changes or modifications not expressl y a pproved by the manufacturer could void the user s authority to opera te this device. A B O U T YO U R K L IP S C H P U R C H A S E Thank you for your purchase of a Klipsch subwoofer amplifier . After reading this manual and connecting your system, you will hear the results of over 55 years of stringent engineering and class-leading research and development. Please be sure to fill out the warranty card at the back of this manual or online a t www .klipsch.com so we are better a ble to ser ve you. Again, thank you for choosing Klipsch and we hope that your subwoofer amplifier brings life to your music and movies for many years. U N PA C K I N G The easiest way to remove the amplifier from its carton is to turn the open end of the box down so that it is resting on a table or the floor , with the flaps spread out and awa y . Then pull the box straight up and off. Remove an y packing material from the amplifier , place it back in the carton, and store in case you ever need to ship the amplifier . F R O N T PA N E L C O N T R O L S 1. Master Power On/Off The Master Power switch turns the amplifier on and of f. In addition to the Master Power switch, the KA-1000-THX has an Auto Power function that will allow the amplifier to turn itself on and off automa tically when an audio signal is detected. An LED indica tes the current status of the amplifier – RED when the amplifier is in Standb y and GREEN when the amplifier is active. The LED is off when the Master Power switch is set to the Of f position. 2. Auto Power On/Off The Auto Power switch has two settings – On and Of f. In the Of f position, the Master Power switch turns the amplifier on or of f. If you lea ve the Master Power switch in the On position and set the Auto Power switch to the On position, then the amplifier will automa t- icall y turn itself on and of f when an audio signal is detected. There is a 2 second On dela y and a 15 minute Of f delay when using the Auto Power function. 3. Phase Control The Phase control on the KA-1000-THX is continuousl y variable from 0˚ to 180˚. This control allows you to fine tune the performance of your subwoofer system b y o p t i m i z i n g the blend with the main speakers. Basicall y, one of the positions will result in an audible increase in bass output depending upon room placement. 4. Boundary Gain Compensation On/Off The Boundar y Gain Compensa tion switch allows you to fine-tune the low-end extension of your subwoofer system based upon room placement. In some room locations, your subwoofers low-end response may become exa g gerated or boom y due to the increase in output from your room s acoustics. In this case, selecting the On position will restore the system to a flatter , less boomy response. If you are using a THX ® Ultra2 ™ receiver or processor and you have selected Ultra2 for the sub setting, the boundary gain compensa - tion switch should be set to Of f. 5. THX On/Off The THX switch provides a means to bypass the crossover and level controls when using a THX preamplifier or receiver . In the On position, the crossover and level controls do not function. (In this configuration, your preamplifier or receiver will perform those functions.) In the Of f position, the crossover and level controls opera te normall y . Be sure the volume level on your preamplifier or receiver is turned down before changing the setting of this switch. 6. Lowpass Crossover The Lowpass Crossover control allows you to select the proper frequency a t which your subwoofer system blends with your main speakers. It is selecta ble from 40-120Hz. Y ou should set this control to the a pproxima te low-frequency limit of your main left and right speakers. In a THX system, this setting would be 80Hz. If the THX control is set to the On position, this control will not operate. An LED status indicator is provided to tell you whether or not this control is opera tional – GREEN for active and RED for bypassed. 7. Level Control The Level control is the volume setting for the amplifier . It is used in conjunction with the subwoofer output level control on your preamplifier or receiver . It is used to adjust the over - all output level of your subwoofer system. If the THX control is set to the On position, this control will not opera te. An LED sta tus indicator is provided to tell you whether or not this control is opera tional – GREEN for active and RED for bypassed.
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KA-1000-THX AMPLIFIER C O N N E C T IO N A N D A D J U S T M E N T The KA-1000-THX is a high-performance, THX Ultra2-certified Class D digital power ampli - fier with a built-in subwoofer crossover . It is designed specifically to drive one or two KW -120-THX subwoofers to maximum output without audible distortion or risk of damage. Although the amplifier s connections and controls are simple, their use varies somewha t according to the subwoofer system s application. T ypical setup procedures are described in the following sections – one for digital systems and one for analog systems. THX / Digital Surround Receiver or Processor Connection - T oday s Dolby Digital ® and DTS ® digital surround receivers and processors, as well as all THX-certified models, have line-level subwoofer outputs and built-in subwoofer crossovers. If your system is built around one of these, it will almost al ways be best to use the KA-1000-THX with the THX switch in the On position. This will bypass the crossover and level controls. Connect the subwoofer output on the receiver or processor to one or both of the KA-1000-THX s two input jacks (Figure 2). Use a shielded, high quality subwoofer interconnect ca ble of appro - priate length with RCA plugs on each end. Y our dealer can help you select a suitable cable. Be sure to go into your receiver or processor s speaker setup menu and set Subwoofer to On or Y es, or if it is a THX Ultra2 certified model, select Ultra2 in the subwoofer menu. Y our receiver or processor may have additional bass mana gement abilities beyond simpl y activating the subwoofer output. Consult your receiver or processor s owner s manual or your dealer for more informa tion on the proper bass mana gement settings for your system. Crossover Adjustment – With the THX switch in the On position as suggested for this type of setup, the crossover control will not function. Its status LED will be red signifying that this control is b ypassed. Y our receiver or processor will perf orm the crossover functions for the subwoofer in this situation. When using either the KL-650-THX or KL-525-THX as your front speakers, select the 80Hz (THX) crossover frequency . Level Control – With the THX switch in the On position as suggested for this type of setup, the level control will not function. Its status LED will be red signifying that this control is b ypassed. Y our receiver or processor will perf orm the volume level functions for the sub - woofer in this situation. Phase Control – In some installations the setting of the Phase control may not make much difference, whereas in others it ma y be necessary to go back and forth between the Phase and Level controls for a while in order to get the very best blend with the main speakers. Since each control setting (including the one for crossover frequency in the receiver or processor) af fects the optimum settings for the others, it often takes a while to get ever y - thing dialed in just right. Start with the Phase control at 0° and play a recording with a prominent, repeating bass line in your listening position. Repeat this process with the control in the 90° and 180° positions. Use the setting that yields the greatest bass output. R E A R PA N E L IN P U T S A N D O U T P U T S / C O N N E C T IO N S A N D S E T U P Make all connections with the power turned OFF on both the subwoofer amplifier and your receiver or preamplifier! 1. Line Level Input The Line Level input consists of a pair of gold-plated RCA phono jacks. Either one or both may be used. (Use a shielded, high quality subwoofer interconnect cable of a ppropriate length with RCA plugs on each end. Y our dealer can help you select a suitable cable.) This input can function as either a Line Level input or an LFE Input, depending on the position of the THX On/Off switch. When THX is On, the Lowpass Crossover is bypassed and the Line Level input effectively functions as an unfiltered LFE input. 2. Line Level Output The Line Level output consists of a pair of gold-pla ted RCA phono jacks. Either one or both may be used. This output is an unfiltered passthru of the Line Level input signal. It can be used to connect to a second KA-1000-THX amplifier or to connect back to your electronics if needed. 3. Speaker Level Outputs The Speaker Level outputs are two professional style Speakon ® NL2 connections. This is a simple connection that is easy to use, secure and foolproof. Y ou simply align the tab on the connector with the slot on the output jack, full y insert the connector , turn it clockwise and the collar locks into place (Figure 1) . T o remove it, pull back on the collar and while holding it back, turn it counterclockwise and pull it out. This connection is repeated on the back of the subwoofer enclosure. If you are using two KW -120-THX subwoofers, connect the second one in the same fashion to the KA-1000-THX s second output jack. (A single, 20-f oot length, THX Ultra certified subwoofer speaker cable is provided with each KW -120-THX subwoofer enclo - sure. Contact your dealer if you need a longer ca ble.) 4. AC Line Cord The AC Line connection uses a detachable three-prong power cord. Insert the line cord into this jack, set the Master Power switch to Of f, then insert the power cord into an appropria te AC receptacle. Leave the Master Power switch off until all connections are completed. (W e recommend leaving the Master Power and Auto Power switches in the On position for normal operation in most systems.) Figure 1 Figure 2