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More Info @ www.polkaudio.com/car
ENGLISH
SAFE LIMITS OF OPERATION
Polk Audio specifies the recommended amplificationrange
for each of i ts passive(non-amplified) loudspeakers. Typically
that specification will b e e xpressed asa range of power such
as 20-200 W ( per c hannel). Itis important to understand
what those numbers meanwhen choosing a receiver or
amplifier for your Polkloudspeakers. The lower number
indicates the lowest continuousrated power that will yield
acceptable performance in atypical listening environment.
The higher number indicatesthe highest per channel power
that should be usedwith your Polk speakers. That n umber
should not be c onfused witha “Power Handling” specification
and it does notimply that the speaker will safelyhandle
that full amount o f poweron a long-term basis. We specify
a wide range o f powerratings because not all electronics
manufacturers use the samemethod for rating power.
In fact, high q uality lower-ratedamplifiers sound better and
play louder than lowquality units with a higher powerrating.
Automobile horsepower is agood analogy. Your car probably
has far more h orsepower thanit needs for your daily commute
and is likely capableof going well over 120mph (190km/hr).
Having that extra poweris good for on-ramp acceleration
and danger avoidance (likegetting away from brain-eating
zombies) but that doesn’tmean that it is advisable tooperate
your car on NorthAmerican highways at full power and
maximum speed for anextended period of time. Just ask
your local state trooperif you are in doubt. Similarly,we
recommend using amplifiers andreceivers with rated power
above the Power H andling limitsof our speakers because
having extra power availablefor short term peaks is conducive
to better sound q uality, maximumdynamic range and effortless
high volume output. B ut westrongly urge you not to usethe
full power of youramplifier or receiver for daily listening.
Loudspeakers can be damagedwhen an amplifier, regardless
of its wattage, i s madeto play at higher listening levelsthan its
power can clearly produce.Operation at this level can resultin
very high levels ofaudible distortion originating in the
amplifier, which can a dd aharsh, gritty sound to your listening
material. If you hear distortion—turnthe volume down
or risk damaging your speakers. Youcan damage just
about any speaker, r egardless ofpower rating, if you drive an
amplifier to or beyondthe point of distortion.
BRING ON THE NOIZE!
Please inspect each l oudspeaker carefully.Notify your
Polk Audio dealer i f y ou noticeany damage or missing items.
Keep the carton andpacking material. They will do thebest
job of protecting y our speakersif they need to be transported.
BUILDING A HOME FOR YOUR SUBWOOFER—
db SUB ENCLOSURE 101
To get the bestperformance from your db Subwoofers,
you must use aSubwoofer Enclosure. Don’t bother
using them in “freeair,” with no sub box, j ust poppedinto
the back deck o f y our c ar. Youwill not get very good
performance from your subwoofersif you do this.
They are not d esigned t o b e installedinfinite baffle or
“free air.” This willvoid the warranty.
You can build y our ownbox, buy a pre-built box ora box kit,
or have your PolkAudio dealer design and build acustom sub
enclosure for you. Yourdb Subwoofers were designed to work
well in a widevariety of enclosure sizes and configurations.
If you choose tobuild your own enclosure, be sureto build
it well. Make c ertain it’sproperly sealed and airtight for
maximum bass performance.
Polk Audio Customer Service is availablefrom
9am–6pm, EST, Monday through Friday, a t 800-377-7655
(US & Can only, outside theUS please call
410-358-3600) or email us at polkcs@polkaudio.com
Please do not hesitate to callus if you have questions
about your speaker system. We lovethis stuff.
RECOMMENDED SEALED ENCLOSURES
db840 & 840
DVC 0.35 cu f t (9.9L)
db1040 & 1040
DVC 0.66 cu f t (18.7L)
db1240 & 1240
DVC 0.88 cu f t (24.9L)
For more information a bout enclosuresand configurations, log
on to www.polkaudio.com/car/toolbox/subboxplans/. O r call
Polk Audio’s Customer ServiceDepartment for a FAXback Sub
Enclosure info sheet.
