polk audio RM6750 Compact 5.1 Audio System User Manual

RM6750
COMPACT 5.1 AUDIO SYSTEM

RM6750 Compact 5.1 Audio System

For more detailed hookup info, visit www.polkaudio.com.

CAUTION **
RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
** The lightning flash with the 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 product.
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.
CAUTION** TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

CAUTION
TO PREVENT ELECTRIC SHOCK, MATCH WIDE BLADE OF PLUG TO WIDE SLOT, FULLY INSERT.

**** Product Disposal—Certain international, national, and/or local laws and/or regulations may apply regarding the disposal of this product. For further detailed information, please contact the retailer where you purchased this product or the Polk Audio Importer/Distributor in your country. A listing of Polk Audio Importer/Distributors can be found on the Polk Audio website www.polkaudio.com or by contacting Polk Audio at: 5601 Metro Drive, Baltimore, Maryland 21215, USA—Phone: +1 410 358-3600.

IMPORTANT SAFETY INSTRUCTIONS

READ BEFORE OPERATING EQUIPMENT

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 only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong is provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for the replacement of the obsolete 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 apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as the power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. WARNING: To reduce the risk of fire or electric shock, this apparatus should not be exposed to rain or moisture and objects filled with liquids, such as vases, should not be placed on this apparatus.
16. To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the receptacle.
17. The main plug of the power supply cord shall remain readily operable.

WARNING: Listen Carefully
Polk Audio loudspeakers and subwoofers are capable of playing at extremely high volume levels, which could cause serious or permanent hearing damage. Polk Audio, Inc. accepts no liability for hearing loss, bodily injury, or property damage resulting from the misuse of its products.
Keep these guidelines in mind and always use your own good judgment when controlling volume:
You should limit prolonged exposure to volumes that exceed 85 decibels(dB).
For more about safe volume levels, go to www.polkaudio.com/education/article/SPL/, or refer to the Occupational Health and Safety Administration (OSHA) guidelines at www.osha.gov/dts/osta/otm/noise/standards_more.html.

Suggested speaker placement with options for rear speaker placement.
The Subwoofer driver should be placed more than six inches from the wall.
Place the subwoofer upright on the feet. Do not place the amplifier side down.

Employ Keyhole Slot for simple wall mounting.
(Threaded Insert for use with articulating brackets, sold separately.)

Mounting In Hollow Drywall
Use wall anchor with appropriate screw (a or b).

Using Spring Clips.
Lift the clip, insert the bare wire, and close the clip.

CONNECTING THE SUBWOOFER TO THE SYSTEM— HOOKUP OPTIONS
Important Note: Use only one of these options.
Never combine hookup options.

Hookup Option 1

OPTION #1—
Receivers that include a “Sub Out” feature—the most common hookup method with Dolby ® Digital receivers.

NOTE : Use either the L or R Line input (another hookup option is to use a Y-split cable and connect both L and R Line inputs). After you make this Sub Out connection, turn
the “Low Pass” filter fully clockwise.

• Connect all speakers directly to the receiver. When using method #1, adjust your receiver’s speaker configurations as follows: Set Front, Center, and Surround speakers to “small.”
• Receiver Settings:
• Front, Center, and Surrounds = “SMALL”
• Subwoofer = “ON,” or “YES,” or “PRESENT”
• Set the crossover frequency on the receiver to 120Hz.
  Consult your receiver’s owner’s manual for speaker configuration.

Hookup Option 2

OPTION #2—
Two-channel or Dolby ® Pro Logic receiver with no “Sub Out.”
If you elect to use the speaker level inputs, use two-conductor 16 gauge or thicker speaker wires. See your Polk dealer for wire recommendations.
Note that one of the speaker input terminals on the rear of the speaker is marked red (+) and the other black (-). Make certain that you connect the wire from the red (+) terminal of your receiver to the red (+) terminal on your speaker, and the wire from the black (-) terminal of the receiver to the black (-) terminal on your speaker. Speaker wire has some indication (such as color coding, ribbing, or writing) on one of the two conductors to help maintain consistency. If your subwoofer doesn’t seem to produce much bass, it is most likely that one of the speaker wires is connected backward. Double-check all connections for correct polarity.
Strip 1/2″ (12mm) of insulation from each of the two conductors on both ends to expose the bare wire. Twist the exposed wire of each conductor to form two un-frayed strands.

• Connect the left and right front speaker outputs of your receiver to the speaker-level inputs of the powered subwoofer using the speaker wire.
• Then, connect the left and right front speakers using speaker wire from the speaker-level outputs from the powered subwoofer.
• Connect the Center Channel Speaker directly to the center channel output from your receiver.
• Connect the Rear Surround Satellites directly to the rear or surround channel outputs from your receiver.
• Receiver Settings:
  • Front speakers = LARGE
  • Subwoofer = “OFF” or “NO”
  • Center and Surrounds= SMALL
  • Crossover Frequency= 120 Hz

Hookup Option 3

OPTION #3—
Receivers with full-range (unfiltered) Left and Right “Pre Out” jacks (this is the least commonly used hookup).

• Connect the left and the right preamp output from your receiver to the left and right LINE input of the subwoofer. Do not use speaker wires.
• When using method #3, it is necessary to adjust the settings on your receiver as follows:
• Receiver Settings:
• Front speakers = LARGE
• Subwoofer = “OFF” or “NO”
• Center and Surrounds= SMALL

ADJUSTING YOUR SYSTEM

SUBWOOFER ADJUSTMENTS
Your Powered Subwoofer offers a range of setting options. We recommend the following settings as starting points, but the settings that are best for you depend upon your speaker placement, electronics, and personal taste. After you’ve become familiar with what the settings do, experiment with alternate options to find the method that works best for your system setup. You’ll find an informative article on “Subwoofer Positioning and Adjustment” in the setup section at: www.polkaudio.com/education/article.php?id=19.
Note : When you set up your subwoofer for the first time, you will probably have to make adjustments several times before you hear what you personally like. Start with the volume at 50%.

AC POWER CONNECTION AND AUTO ON/OFF
Your subwoofer features auto on/off circuitry, marked “auto” on the power switch, which automatically turns your subwoofer on when it senses a program signal.
We recommend the “auto” setting if your subwoofer is always receiving power (ie, if it’s plugged into a wall outlet).
When no signal is present, the circuit turns the subwoofer off after 15 minutes. If you are concerned about the brief delay between when the music starts and when the subwoofer turns on, simply leave your subwoofer in the “On” position. You may want to leave your system unplugged during extended periods of nonuse, such as during a vacation.

FINE-TUNING YOUR SUBWOOFER

• Volume —Adjust by ear using a wide variety of CDs and video sources.
  Adjust for deep, powerful bass without “boominess.”

• Low Pass —NOTE: This control should be turned all the way up when the subwoofer is connected with Method #1 (LINE IN). This control adjusts the frequency range over which the subwoofer operates. If male vocals sound “thin,” turn this control up until the voice sounds rich but not “boomy.” If male vocals sound too “thick” or “chesty,” turn this control down until the voice sounds natural.

• Phase Switch —Sit in your favorite listening position. Play music (not a movie) with a walking bass line. We recommend playing jazz or country music. Now listen carefully
  for the point at which the subwoofer transitions to your main speakers. This is the crossover point, and this point should be below the frequency of a male human voice. Whichever phase setting sounds louder or fuller at the subwoofer’s crossover  (transition) point is the optimum setting. Sometimes no difference will be heard.

TROUBLESHOOTING

No sound coming from the subwoofer| If hookup is “Sub Out” to LINE IN, is your receiver set to “Subwoofer—yes” If hookup is via speaker wire, check that the polarity of the wires is correct?
---|---
The subwoofer doesn’t sound right| If hookup is “Sub Out” to LINE IN, is your receiver set to “Subwoofer—yes” If hookup is via speaker wire, check that
the polarity of the wires is correct.
The subwoofer has no power| Check outlet; check fuse after unplugging the subwoofer and calling
customer service.

TECHNICAL ASSISTANCE AND SERVICE

If, after following these hook-up directions, you experience difficulty, please double-check all wire connections. Should you isolate the problem to the speaker, contact the authorized Polk Audio dealer where you made your purchase, or call Polk Audio’s friendly Customer Service Department at 1-800-377-7655 (calls from US or CAN only), (Outside the US or CAN, 410-358-3600), 9am to 6 pm EST, Monday through Friday.
You may also contact us via email: polkcs@polkaudio.com. For more detailed hook-up information and manual updates, visit www.polkaudio.com.
For recommended accessories (including speaker stands, brackets, accessories, and exclusive Polk Audio logo wear), visit our Webstore: http://shop.polkaudio.com.

Rear Amp Panel
Power Switch Settings:
ON = GREEN LED
OFF = RED LED (no signal)
AUTO
No signal = RED LED
Signal = GREEN LED

To get the best performance and for more details about Bass Management and Subwoofer Hookup, visit The Library at www.polkaudio.com.

POLK AUDIO HISTORY—

A PASSION FOR SOUND Polk Audio was founded in Baltimore in 1972 by Johns Hopkins University graduates Matthew Polk and George Klopfer. Today, Polk Audio is a leading international manufacturer of high-quality home and automotive loudspeakers. Polk products emphasize superior sound and build quality, and feature many patented and award-winning innovations. Polk Audio has built a reputation as “The Speaker Specialist.” Polk products are sold throughout the USA, Canada, and in over 50 countries around the world. Polk Audio’s mission has always been to build high-quality, great-sounding speakers at affordable prices. For the people of Polk Audio, building speakers is not just a job; it’s a passion.

TECHNICAL ASSISTANCE

If after following the hook-up directions, you experience difficulty, please double-check all wire connections. Should you isolate the problem to the speaker, contact the authorized Polk Audio dealer where you made your purchase or call Polk Audio’s Customer Service Department at 1-800-377-7655 (calls from US or Canada only) from 9am to 6 pm, Eastern Time, Monday through Friday. You may also contact us via email at polkcs@polkaudio.com.

Shipping Weight (5.1 System): 52lbs (23kg)
FRONT AND REAR SPEAKERS
Overall Frequency Response: 100Hz-24kHz
-3dB Limits: 135Hz-20kHz
Recommended Amplification: 20-100 Watts
Sensitivity: 89dB SPL @1m (2.83 Vrms drive level)
Impedance: compatible with 8-ohm outputs
Bass-Mid Drive Unit: 1 – 3 1/2″ (89mm)
Dynamic Balance driver magnetically shielded Tweeter:
1 – 1/2″ (12mm) dome
Crossover: 4.0 kHz
Enclosure Type: Vented, Powerport
Dimensions: 4 1/6″ W x 6 1/2″ H x 5″ D (10.3 cm W x 16.5 cm H x 12.7cmD)| Overall Frequency Response: 100Hz-24kHz
-3dB Limits: 135Hz-20kHz
Recommended Amplification: 20-100 Watts
Sensitivity: 89dB SPL (2.83 Vrms drive level)
Impedance: compatible with 8-ohm outputs
Bass-Mid Drive Unit: 2 – 3 1/2″ (89mm)
Dynamic Balance drivers, magnetically shielded
Tweeter: 1 – 1/2″ (12mm) dome
Crossover: 4.0kHz
Enclosure Type: Vented, Powerport
Dimensions: 11 3/16″ W x 4 5/16″ H x 5 3/16″ D
(28.4 cm W x 10.9 cm H x 13.1 cm D)| Driver Complement: 1 – 8″ (200mm)
Overall Frequency Response: 40Hz-200Hz
-3dB Limits: 45Hz-180Hz
Size: 11″ W x 15 1/2″ H x 13 1/2″ D (27.9 cm W x 39.4 cm H x 34.3 cm D)
Amplifier:* 50 Watts continuous average power into 4Ω with less than 1% THD, 20-200Hz
Dynamic Power: 100 Watts
Specifications are subject to change without notice.

*This specification conforms to Federal regulations regarding amplifier power ratings. For purposes of comparison, be certain that all power ratings conform to these stringent FTC regulations.

LIMITED WARRANTY

Polk Audio, Inc., warrants to the original retail purchaser only. This warranty will terminate automatically prior to its stated expiration if the original retail purchaser sells or transfers the Product to any other party.
Polk Audio, Inc., warrants, to the original retail purchaser only, that the LOUDSPEAKER(S), PASSIVE CROSSOVER COMPONENT(S), and ENCLOSURE on this Polk Audio Loudspeaker Product will be free from defects in material and workmanship for a period of five (5) years from the date of original retail purchase from a Polk Audio Authorized Dealer.
Furthermore, Polk Audio, Inc., warrants, to the original retail purchaser only, that any AMPLIFIER OR OTHER ELECTRONIC COMPONENT that may be included in this Polk Audio Loudspeaker Product will be free from defects in material and workmanship for a period of three (3) years from the date of original retail purchase from a Polk Audio Authorized Dealer.
To allow Polk Audio to offer the best possible warranty service, please register your new product online at: www.polkaudio.com/registration or call Polk customer service at 800-377-7655 in the USA and Canada (outside the USA: 410-358-3600) within ten (10) days of the date of original purchase. Be sure to keep your original purchase receipt.
Defective Products must be shipped, together with proof of purchase, prepaid insured to the Polk Audio Authorized Dealer from whom you purchased the Product, or to the Factory at 2550 Britannia Boulevard, Suite A, San Diego, California 92154. Products must be shipped in the original shipping container or its equivalent; in any case, the risk of loss or damage in transit is to be borne by you. If upon examination at the Factory or Polk Audio Authorized Dealer it is determined that the unit was defective in materials or
workmanship at any time during this Warranty period, Polk Audio or the Polk Audio Authorized Dealer will, at its option, repair or replace this Product at no additional charge, except as set forth below. All replaced parts and Products become the property of Polk Audio. Products replaced or repaired under this warranty will be returned to you, within a reasonable time, freight prepaid.
This warranty does not include service or parts to repair damage caused by accident, disaster, misuse, abuse, negligence, inadequate packing or shipping procedures, commercial use, voltage inputs in excess of the rated maximum of the unit, the cosmetic appearance of cabinetry not directly attributable to defect in materials or workmanship, or service, repair, or modification of the Product which has not been authorized or approved by Polk Audio. This warranty shall terminate if the Serial number on the Product has been removed, tampered with, or defaced. This warranty is in lieu of all other expressed Warranties. If this Product is defective in materials or workmanship as warranted above, your sole remedy shall be repair or replacement as provided above. In no event will Polk Audio, Inc. be liable to you for any incidental or consequential damages arising out of the use or inability to use the Product, even if Polk Audio, Inc. or a Polk Audio Authorized Dealer has been advised of the possibility of such damages, or for any claim by any other party. Some states do not allow the exclusion or limitation of consequential damages, so the above limitation and exclusion may not apply to you. All implied warranties on this Product are limited to the duration of this expressed Warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you. This Warranty gives you specific legal rights, and you also may have other rights which vary from state to state. This Warranty applies only to Products purchased in Canada, the United States of America, its possessions, and U.S. and NATO armed forces exchanges and audio clubs. The Warranty terms and conditions applicable to Products purchased in other countries are available from the Polk Audio Authorized Distributors in such countries.
“Polk Audio,” “The Speaker Specialists,” “Dynamic Balance” and “Acoustic Resonance Control” are registered trademarks of Polk Investment Corporation used under license by Polk Audio Incorporated.

Polk Audio, 5601 Metro Drive,
Baltimore, Maryland 21215,
USA800-377-7655,
Fax:410-764-4817,
www.polkaudio.com

Documents / Resources

| polk audio RM6750 Compact 5.1 Audio System [pdf] User Manual
RM6750 Compact 5.1 Audio System, RM6750, Compact 5.1 Audio System, 5.1 Audio System, Audio System
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References

• Polk Audio® | Great Sound for All
• OSHA Technical Manual (OTM) | Occupational Safety and Health Administration
• Polk Audio® | Great Sound for All
• Polk Audio® | Great Sound for All
• Polk Audio® | Great Sound for All
• Polk Audio® | Great Sound for All
• polkaudio.com/registration

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