Polk Audio db1240DVC db1240 Owner's Manual - Page 2
Polk Audio Customer Service is available
![]() |
View all Polk Audio db1240DVC manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 2 highlights
ENGLISH SAFE LIMITS OF OPERATION Polk Audio specifies the recommended amplification range for each of its passive (non-amplified) loudspeakers. Typically that specification will be expressed as a range of power such as 20-200 W (per channel). It is important to understand what those numbers mean when choosing a receiver or amplifier for your Polk loudspeakers. The lower number indicates the lowest continuous rated power that will yield acceptable performance in a typical listening environment. The higher number indicates the highest per channel power that should be used with your Polk speakers. That number should not be confused with a "Power Handling" specification and it does not imply that the speaker will safely handle that full amount of power on a long-term basis. We specify a wide range of power ratings because not all electronics manufacturers use the same method for rating power. In fact, high quality lower-rated amplifiers sound better and play louder than low quality units with a higher power rating. Automobile horsepower is a good analogy. Your car probably has far more horsepower than it needs for your daily commute and is likely capable of going well over 120mph (190km/hr). Having that extra power is good for on-ramp acceleration and danger avoidance (like getting away from brain-eating zombies) but that doesn't mean that it is advisable to operate your car on North American highways at full power and maximum speed for an extended period of time. Just ask your local state trooper if you are in doubt. Similarly, we recommend using amplifiers and receivers with rated power above the Power Handling limits of our speakers because having extra power available for short term peaks is conducive to better sound quality, maximum dynamic range and effortless high volume output. But we strongly urge you not to use the full power of your amplifier or receiver for daily listening. Loudspeakers can be damaged when an amplifier, regardless of its wattage, is made to play at higher listening levels than its power can clearly produce. Operation at this level can result in very high levels of audible distortion originating in the amplifier, which can add a harsh, gritty sound to your listening material. If you hear distortion-turn the volume down or risk damaging your speakers. You can damage just about any speaker, regardless of power rating, if you drive an amplifier to or beyond the point of distortion. BRING ON THE NOIZE! Please inspect each loudspeaker carefully. Notify your Polk Audio dealer if you notice any damage or missing items. Keep the carton and packing material. They will do the best job of protecting your speakers if they need to be transported. BUILDING A HOME FOR YOUR SUBWOOFER- db SUB ENCLOSURE 101 To get the best performance from your db Subwoofers, you must use a Subwoofer Enclosure. Don't bother using them in "free air," with no sub box, just popped into the back deck of your car. You will not get very good performance from your subwoofers if you do this. They are not designed to be installed infinite baffle or "free air." This will void the warranty. You can build your own box, buy a pre-built box or a box kit, or have your Polk Audio dealer design and build a custom sub enclosure for you. Your db Subwoofers were designed to work well in a wide variety of enclosure sizes and configurations. If you choose to build your own enclosure, be sure to build it well. Make certain it's properly sealed and airtight for maximum bass performance. Polk Audio Customer Service is available from 9am-6pm, EST, Monday through Friday, at 800-377-7655 (US & Can only, outside the US please call 410-358-3600) or email us at [email protected] Please do not hesitate to call us if you have questions about your speaker system. We love this stuff. RECOMMENDED SEALED ENCLOSURES db840 & 840DVC 0.35 cu ft (9.9L) db1040 & 1040DVC 0.66 cu ft (18.7L) db1240 & 1240DVC 0.88 cu ft (24.9L) For more information about enclosures and configurations, log on to www.polkaudio.com/car/toolbox/subboxplans/. Or call Polk Audio's Customer Service Department for a FAXback Sub Enclosure info sheet. More Info @ www.polkaudio.com/car 3
![](/manual_guide/products/polk-audio-db1240-db1240-owners-manual-dedacce/2.png)