Niles Audio HPS-4/HPS-6 User's Manual
Contents
1. Tube Amplifier low profile vm design Ei i F Simple Connect up to four pairs Protection switch safeguards your push button of speakers receiver or amplifier even with operation all pairs of speakers playing Niles HPS 4 APRILES nau hati open naani a UR tudetutl biuiugude ebatututl Ghudubobl biutueuil ce 7 bel Constant Two piece Impedance removable Protection connectors Switch HIGH POWER SPEAKER Receiver SELECTION SYSTEM TUNER 94 9 L s h alllin sa REFEREE oes Niles HPS 4 Figure 2 Wiring Diagram O oO e O e OJO AN MN AN AN AN AN OJO IONO O Speaker Speaker Speaker Speaker Pair 4 Pair 3 Pair 2 Pair 1 HiGH POWER SPEAKER SELECTION Operation There are two ways to use the HPS 4 HPS 6 You may play one pair of speakers at a time or play multiple pairs simultaneously If you intend to play more than one pair of speakers at the same time you will need to become familiar with the opera tion of the PROTECTION button Playing One Pair of Speakers At a Time 1 Make sure the amplifier or receiver power is OFF and set the volume to minimum 2 Locate the on off button on the HPS 4 HPS 6 which corre2. NILES Niles Audio Corporation www nilesaudio com 12331 S W 130 Street Miami Florida 33186 Tel 305 238 4373 Fax 305 238 0185 2004 Niles Audio Corporation All rights reserved Niles the Niles logo and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation Because we strive to improve our products Niles reserves the right to change product specifications without notice The technical and other information contained herein is not intended to set forth all technical and other specifications of Niles products Additional information can be obtained on line at www nilesaudio com or by calling Niles at 1 800 289 4434 Printed in China 1 04 DSOO358ACN INSTALLATION amp OPERATION GUIDE HPS 4 HPS 6 HIGH POWER SPEAKER SELECTION SYSTEM NILES BLENDING HIGH FIDELITY AND ARCHITECTURES CMSMMON WW ER SPEAKER SELECTION SYSTEM HPS 4 HPS 6 High Power Speaker Selector System TABLE OF CONTENTS Introduction Features and Benefits Installation Considerations 3 Installation 5 Operation 6 Specifications 14 Introduction The HPS series allows you to connect multiple pairs of speak ers to your stereo receiver or amplifier and play any one pair any combination of pairs or all pairs at once You don t have to worry about overloading your amplifier The HPS 4 and HPS 6 have a protection circuit that keeps your amplifier run ning safely even if you
3. age caused by the use of a higher power receiv er or amplifier will void the warranty Consult your Niles deal er or receiver amplifier manufacturer if you are uncertain about the power rating of your receiver or amplifier Amplifier Impedance Load As more pairs of speakers are parallel connected to a receiver or amplifier the overall system impedance becomes lower For example if two pairs of 8 ohm speakers are connected in parallel the impedance will be 4 ohms two pairs of 4 ohm speakers in parallel become 2 ohms and so on Most receivers or amplifiers are not rated for use below a 4 ohm load Most manufacturers do not recommend con necting more than two pairs of speakers without using some form of impedance correction The HPS series includes impedance correction circuitry which protects your receiver or amplifier from low impedance loads The circuitry assures that your receiver or amplifier will see a safe operating load even when all four speaker pairs are playing at the same time The actual impedance load the speaker selector presents to your receiver or amplifier will vary depending on how many speaker pairs are playing and the impedance rating of each speaker If you have four pairs of 8 ohm speakers playing the HPS 4 HPS 6 series will present a 4 5 ohm impedance load to HiGH POWER SPEAKER SELECTION 3 Locate the on off buttons on the HPS 4 HPS 6 which cor respond to the speaker pairs you wish to play Set them t
4. have all pairs of speakers playing at the same time HiGH POWER SPEAKER SELECTION Balancing Speaker Volume The volume control on your receiver or amplifier serves as the master volume for all speaker pairs connected The volume level of the speakers may vary from room to room This is caused by several factors Two lesser factors are the size of the speaker and its efficiency The largest factor is the physical size of the room The best way to balance speaker volume is to equip each of the speaker pairs in your system with a Niles volume control The controls allow you to adjust the volume of each speaker pair individually If all the speaker pairs in your system are equipped with Niles volume controls you can leave the amplifier or receiver volume set at one position and use the Niles controls exclusively SYSTEM SPECIFICATIONS Audio Power Handling 250 watts channel continuous music power Frequency Response 0 dB 0 dB flat from 20 Hz to 20 kHz Mounting Table Top component Wiring Requirements Individual runs of 2 conductor speaker wire Connectors accommodate wire sizes 14 22 gauge 16 gauge recommended Overall Dimensions 17 wide x 2 high x 8 3 4 deep Weight 4 1 2 lb HIGH POWER SPEAKER SELECTION SYSTEM Installation Considerations Power Handling The HPS series is designed for use with a receiver or amplifier having a maximum power output of 250 watts per channel at 8 ohms Dam
5. o the ON position Engaged 4 Turn on the amplifier or receiver and select a source such as the tuner or CD player 5 Slowly turn up the amplifier or receiver volume and set it to a comfortable not maximum listening level Be careful not to overdrive or clip your amplifier If the sound becomes muddy or distorted you have reached the limit of your amplifier s volume capability and should quickly reduce the volume to avoid damaging your speakers When playing the following speakers 1 or 2 pairs of 8 ohm speakers SYSTEM TECH TIP You will need to activate the HPS 4 HPS 6 s protection button whenever the overall system impedance might fall below 4 ohms The Protection button should be Any combination of 4 and 8 ohm speakers Set the PROTECTION button to the correct position using the chart shown above HiGgH POWER SPEAKER SELECTION SYSTEM Tech Tip Wire size is expressed by it s AWG American Wire Gauge number The lower the AWG num ber the larger the wire i e 12 AWG wire is physically larger than 14 AWG Using the HPS Series with Tube Type Amplifiers Virtually all tube amplifiers must have a load connected at all times If the amplifier to be connected to the HPS 4 HPS 6 is a tube amplifier be sure to always have at least one pair of speak ers switched on at all times An alternative is to permanently connect a 150 ohm 5 watt resistor across the tube am
6. oad you will need to activate the Protection button whenever the overall system imped ance might fall below 4 ohms Use the following chart as a guide for setting the Protection button HiGcH POWER SPEAKER SELECTION your receiver amplifier With six pairs of 4 ohm speakers playing the load drops to slightly under 4 ohms If you intend to use the HPS series with more than two pairs of 4 ohm speakers it is recommended that you verify that the receiver or amplifier is capable of driving a 4 ohm load Consult your Niles dealer or receiver amplifier manufacturer if you are uncertain about the capabilities of the receiver amplifier Type of Speaker Wire For most applications we recommend you use 16 or 18 gauge stranded copper speaker wire for the HPS 4 HPS 6 connections For wiring runs longer than 80 feet 14 gauge wire is recommended Using speaker wire larger than 14 gauge for the HPS 4 HPS 6 connections is not recom mended the wire may not fit into the connectors Never use solid core aluminum or Romex type wire with the HPS 4 HPS 6 When running speaker wires inside walls most states and municipalities in the U S specify that you must use a special type of speaker wire Usually the requirement is that the wire has a specific CL fire rating such as CL 2 or CL 3 Consult your Niles dealer building contractor or local building and inspection department if unsure about which type of wire is best for you
7. plifier s output in parallel with the HPS 4 HPS 6 See Figure 1 Installation 1 Select a convenient mounting location 2 Run all the necessary Label the wires for future reference See Figure 2 3 Make the connections to the speaker selector The amplifi er speaker connectors on the HPS are removable If you wish you may remove the HPS s connectors to facilitate installation see Figure 3 Strip 3 8 of insulation from the end of each wire Tightly twist the end of each wire until there are no frayed ends Insert each wire into the appro priate hole on the connector terminals Be certain that proper phasing is observed connect the positive termi nals on the HPS to the positive terminals on the amplifier and speakers and the negative terminals on the HPS to the negative terminals on the amplifier and speakers Re install the connectors if they were removed See Figure 4 Insert the connector plug into the socket and lock in place by tightening captive screws on each side of connector 4 Affix the appropriate label to the recessed area over each on off selector button SPEAKER SELECTION SYSTEM Figure 3 Removing the Connectors Figure 4 Installing the Connectors HiGH POWER SPEAKER SELECTION SYSTEM HiGH POWER SPEAKER SELECTION SYSTEM Tube Amplifier Recessed areas for custom room labels Figure 1 EEL RENT ETON Using a Attractive I
8. r application Avoiding Interference Speaker wires can act as an antenna for electrical noise Locating speaker wires too close to a light dimmer or switch may cause a buzzing or popping sound to be heard through the speakers If you must locate the HPS 4 HPS 6 wiring near electrical devices route the speaker wires several feet away from the electrical wiring SYSTEM Tools Required e 1 8 Standard Slotted Screwdriver e Wire Stripper HIGH POWER SPEAKER SELECTION SYSTEM 6 To turn off one or more speaker pairs simply press the corresponding on off button s on the speaker selector Refer to the protection chart for the correct setting of the Protection button Constant Protection Switch The HPS 4 HPS 6 is equipped with a manual override for the protection circuit that enables you to defeat the front panel protection switch and maintain constant impedance protec tion This will safeguard your amplifier from being overdriven due to accidental or improper use by anyone unfamiliar with the equipment To engage this override move the rear panel Constant Protection switch to the On position Constant imped ance protection will be maintained until the switch is turned to Off HiGH POWER SPEAKER SELECTION Features and Benefits The HPS 4 and HPS 6 offer a number of improvements over other speaker selectors e Power handling 250 watts per channel RMS e Protection circuit safegua
9. rds receiver amplifier e Separate left and right ground paths for compatibility with all amplifiers e Rear panel switch for constant or selectable impedance protection e Removable connectors accommodate up to 12 gauge wire e Rugged all metal chassis construction e Non skid feet won t scratch furniture and ensure unit stability during operation e 72 adhesive backed room identification labels e Requires an amplifier that is compatible with a 4 ohm load e Warranty Ten year limited e Dimensions 17 wide x 2 high x 8 5 8 deep e Shipping weight approximately 7 Ibs SYSTEM TECH SUPPORT HOTLINE If you have questions regarding the opera tion of the Niles HPS series contact your local Niles dealer or Niles Technical Support at 1 800 289 4434
10. sponds to the speaker pair you wish to play Set it to the ON position Engaged 3 Turn on the amplifier or receiver and select a source such as the tuner or CD player 4 Slowly turn up the amplifier or receiver volume and set it to a comfortable not maximum listening level Be careful not to overdrive or clip your amplifier If the sound becomes muddy or distorted you have reached the limit of your amplifier s volume capability and should quickly reduce the volume to avoid damaging your speakers 5 To turn off the speaker pair simply press the corresponding on off button on the HPS 4 HPS 6 SYSTEM HiGH POWER SPEAKER SELECTION SYSTEM TECH TIP If your amplifier or receiver has A and B speaker pair outputs connect the speaker selector to the A outputs Do not con nect anything to B This will prevent the amplifier or receiver from driving an unusually low impedance load Playing Two or More Speaker Pairs Simultaneously 1 Make sure the amplifier or receiver power is OFF and set the volume to minimum 2 On the right side of the HPS 4 HPS 6 s front panel is a but ton labeled PROTECTION This button activates the HPS 4 HPS 6 s impedance correction circuitry The circuit ry assures that your receiver or amplifier will see a safe operating load when playing multiple speaker pairs simul taneously Since most receivers and amplifiers are not rated for use below a 4 ohm l
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