Pyle PLMRW10 subwoofer Owner's manual

 PYLE
DENTAGO
ОСНО
PYLE
DENTATO
PENTACO
SPECIFICATIONS SPECIFIC,
PYLE HYDRA — Series Woofer for small enclosures PYLE HYDRA — Series
a | ПЕНЗЕ binder OT a ! A
= Ÿ 1) . Power (Watts RMS) 250W Voice 1.5" K5V A D \ Power (Watts RMS) 300W
À | и \ Power (Watts Peak) 500W Magnet 60 oz sq LA \ Power (Watts Peak) 600W
= 2 Ego | Nom. Impedance 4 ohm Cone Polypropylene te rés № | „29 | Nom. Impedance 4 ohm
E Fis mie | Re (ohms) 3.6 Surround | Butyl Rubber if Fiz | Re(ohms) 3.6
N NS / Fs (Hz) 32 Spider Cotton NN NS / Fs (Hz) 28
77 N PX Qms 5.269 Dustcap | Polypropylene A NN - Qms 3.674
PET A4 | Qes 0.504 | Frame Plastic СУ | | Фе 0.463
| 1 Qts 0.46 Terminals Screw in | Qts 0.411
“Ben X-Max (mm) 4 | Fo X-Max (mm) >
— Vas (cu. ft) 3.012 “en Vas (cu ft) 4.474
Se PYLE HVDRA continually strives to improve de performance and value of its products — all specifications are subject to change. Bide PLE HYDRA continually strives to improve the performance and
Suggested enclosure parameters
Sealed va Vented №
Small Large Small Large
PLMR W10 | Enclosure volume, cu. ft. Sealed or vented 0.6 1 0.8 1.25
Vent length, inches 6 6.4
Vent diameter, inches 3 3
Suggested enclosure parameters
PLMR W12
Enclosure volume, cu. ft.
Small
y
Sealed
L
Sealed or vented
0.8
N
Vent length, inches
Vent diameter, inches
choose this type of encknuer for: + Increased bass response chocse this type of eacksure for» Control of both low vez response and high end cutoll
ed efficiency = Increa r and lower distortion
VENTED ENCLOSURES * Tuneable enclosure BandPASS ENCLOSURES « Can eliminate need for crossovers or electronics in signal path
Vented enclosures, also known as "bass reflex” or "ported enclosures,” utilize a tuned vent, called at "duct" or “port.” This Bandpass enclosures can be constructed in many different configurations. Often referred to as 4 th, Sth, 6th, 7th, or 8th
vent ra Ade add die ota oe too order enclosures, these enclosures are named based on the sum of their hi and lowpass orders. The common
the € can be altered by changing either the size or the ‘the vent. This means that the user can modify characteristics between all bandpass enclosures is that one can control low end response and the high end cutoff.
the bass output without changing the enclosure. Because the port supplies à portion of the bass to the listener, the port This capability allows the user tremendous flexibility when tailoring a sound system to a particular vehicle.
and the speaker must both vent into the vehicle's interior Here are some general guidelines for utilizing vents on your
enclosure: Another benefit of the bandpass enclosure can be increased efficiency. Typical passband efficiency gains are in the 3db
; : I В range, but gains over twice that amount can be achieved in some co ons, Lower distortion 1s also attainable
e Vents can be of any shape. Use a material that is easy to work with when constructing the ducts. Cardboard maili because bandpass systems cani e their own acoustic low pass filter, making it possible to eliminate low end passive
tubes or PVC pipe work well as port tubes. Remember to keep the port opening, inside and outside of the enclosure, free inductors or electronic crossovers from the signal path.
of obstructions for a distance equal to or greater than the port diameter.
; x. - Yet another benefit in bandpass enclosures is ease of installation. With a bandpass enclosure, all of the sound is delivered
o Typically, the larger the vent, the less duct noise created from the air being moved in and out. As the vent gets through a vent (s). This can be a big help in dealing with space limitations by only requiring enough area to vent the
in er, the same tuning frequency can only be maintained by extending the length of the duct. The duct may enclosure into the vehicle, not the entire woofer opening.
extend beyond the outside of the enclosure or bend internally in order to achieve the desired length. Ultimately, the
limitations of the size and length of the duct will be determined by the physical dimensions of the enclosure and installation Critics of bandpass enclosures feel that because all of the sound is delivered a vent, sound quality do hm
area. (when compared to other direct firing enclosures). A consideration when cont ing using a bandpass enclosure is
E ; the complexity of the enclosure. The box is more difficult to build and accessibility to the woofer for servicing is limited.
When installing vents in the enclosure, try to leep the vent at least one vent diameter from any wall and y
at least two vent diameters from the woofer. There are ure differences that exist surrounding the woofer and in In a 4th order bandpass enclosure (12db slope for highpass and lowpass), the woofer low frequency tuning is determined
proximity to the enclosure wall that can keep the vent performing as designed. by the volume of the rear sealed enclosure. The vent determines the frequency for the acoustic low pass filter, while the
. . . volume of the front compartment determünes the response curve in the passband. The greater the volume of the front
e Because of lack of space in the enclosure, reducing the size of the vent or allowing the duct to protrude ~~ compartment the greater is the nse in the md d. Conversely, the smaller the front compartment the greater is
out of the enclosure are options that the occasional installation mar. Another method to get a duct to fit in the dip. By adding a series inductor to a 4th bandpass enclosure it becomes a 5th order enclosure with a 18db
an enclosure would be to use PVC pipe for the duct and a PVC elbow to create a bend in the duct. The length of the duct lowpass rollofi.
should be measured at its center to determine the length.
A 6th order bandpass (or "dual vented") bandpass enclosure will have a rear chamber vent. This enclosure works similarly
to a 4th order enclosure, with the efficiency and low frequency control of a vented system added. Similarly to other
vented enclosures, the enclosure provides little control for the woofer below the tuned frequency of the vent. With both
6th order bandpass or vented enclosures a sub sonic or low frequency filter can aid in reducing inaudible and often
excessive cone excursions, thereby minimizing premature driver failure.
All rules applying to building sealed or vented enclosures apply to constructing bandpass enclosures. The enclosures
must be sealed, vents must be unobstructed and kept away enclosure walls,
FIG 3: Example of a FIG 4: Example of a
FIG 2: Example of a vented enclosure sealed bandpass vented bandpass
enclosure enclosure
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