Pyle PLMRDW104 PLMRDW104 Manual 1

PYLE®

AQUA

PRO

SPECIE'

ICATIONS

2

Et:

PYLE'

AQUA PRO

•

•

Power

(Watts

RMS)

Power

(Watts

Peak)

Nom.

Impedance

Re

(ohms)

Fs

(Hz)

—

Series

p

O

a1

023

s

a

300W

600W

4

ohm

3.6

37

O

Qms

8.793

Qes

0.854

Qts

0.771

Mounting

Depth

4-7/16*

X-Max(mm)

8.9

Overall

Depth

vas

(Cu.

ft

.)

0.94

6-1/ta

•

Suggested

enclosure

parameters

speaker

model

Woofer

for

small

enclosures

Physical

&

Installation

parameters

Voice

2"

TIL

Magnet

60

oz

Cone

Wh

i

to

P.P.

Surround

Santoprene

Spider

Conex

Dustcap

White

P.P.

Frame

Plastic

Terminals

Glass

Fiber

with

Gold

Plated Pin

I

A

Pyle

continually

strives

to

improve

the

performance

and

value

of

its

products

—

lull

specifications

are

subject

to

change.

PliviRDW104

Enclosure

volume,

cu.

ft

.

Sealed

or

vented

Sealed

Small

Large

Small

Large

0.6

Vented

NA

1

0.8

1.0

Vent

length,

inches

8

8

Vent

diameter

,

inches

3

3

Enclosure

Frequency,

Hz

Fb

Tuning

Frequency

of

the

Vented

Enclosure,Hz

59

-A

39

36

F3

Systems

3dB

Down

Piont

(Sealed),Hz

43

PYLE

AQUA

PRO

SERIES

Woofer

Specifications

AQUA

PRO

SPECIFICATIONS

PYLE

AQUA PRO

0

a

-

Series

Woofer

•

A

for

small

enclosures

Physical

&

Installation

parameters

o

Voice

2

-

au

Power

(Watts

RMS)

500W

Power

(Watts

Peak)

1000W

Magnet

80

oz

O

Nom.

Impedance

4

ohm

Cone

Wh

i

to

P.P.

Re

(ohms)

3.6

Surround

Santoprene

Fs

(Hz)

30

Spider

Conex

Qms

7.406

Dustcap

White

P.P.

o

Qes

0.699

Frame

Plastic

Qts

X-Max(mm)

0.639

8.9

Terminals

Glass

Fiber

with

Gold

Plated

Pin

Mounting

Depth

5-5/8'

Overall

Depth

7-7/18•

Vas

(cu.

ft

.)

2.53

Pyle

continually

strives

to

improve

the

performance

and

value

of

its

prcducts

Suggested

enclosure

parameters

speaker

model

PLMRDW124

Enclosure

volume,

cu.

ft

.

Sealed

or

vented

ant

length,

inches

Sealed

N

Small

Large

1.0

Vent

diameter

,

inches

Enclosure

Frequency,

Hz

56

Fb

Tuning

Frequency

of

the

Vented

Enclosure,Hz

-

lal

4o:dilations

are

subject

to

change.

Vented

Small

Large

NA

1.2

8

4

•

38

1.5

8

4

35

F3

Systems

3dB

Down

Piont

(Sealed),Hz

41

PYLE

AQUA

PRO

SERIES

Woofer

Specifications

VENTED

ENCLOSURES

(how

this

type

(*llama'

for:

•

Increased

bass

response

•

Enhanced

efficiency

•

Tuneable

enclosure

Vented

enclosures,

also

known

as

"bass

reflex"

or

"ported

enclosures,"

utilize

a

tuned

vent,

called

at

"duct"

or

"port."

This

vent

captures

the

energy

of

the

woofer's

backwave

to

increase

bass

response

and

efficiency.

The

tuning

frequency

of

the

enclosure

can

be

altered

by

changing

either

the

size

or

the

length

of

the

vent.

This

means

that

the

user

can

modify

the

bass

output

without

changing

the

enclosure.

Because

the

port

supplies

a

portion

.

of

the

bass

to

the

listener,

the

port

and

the

speaker

must

both

vent

into

the

vehicle's

interior

Here

are

some

general

guidelines

for

utilizing

vents

on

your

enclosure:

•

Vents

can

be

of

any

shape.

Use

a

material

that

is

easy

to

work

with

when

constructing

the

ducts.

Cardboard

mailing

tubes

or

PVC

pipe

work

well

as

port

tubes.

Remember

to

keep

the

port

opening,

inside

and

outside

of

the

enclosure,

free

of

obstructions

for

a

distance

equal

to

or

greater

than

the

port

diameter.

•

Typically,

the

larger

the

vent,

the

less

duct

noise

created

from

the

air

being

moved

in

and

out.

As

the

vent

gets

larger

in

diameter,

the

same

tuning

frequency

can

only

be

maintained

by

extending

the

length

of

the

duct.

The

duct

may

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

area.

•

When

installing

vents

in

the

enclosure,

try

to

leep

the

vent

at

least

one

vent

diameter

from

any

wall

and

at

least

two

vent

diameters

from

the

woofer.

There

are

pressure

differences

that

exist

surrounding

the

woofer

and

in

proximity

to

the

enclosure

wall

that

can

keep

the

vent

from

performing

as

designed.

•

Because

of

lack

of

space

in

the

enclosure,

reducing

the

size

of

the

vent

or

allowing

the

duct

to

protrude

out

of

the

enclosure

are

options

that

the

occasional

installation

may

require.

Another

method

to

get

a

duct

to

fit

in

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

should

be

measured

at

its

center

to

determine

the

length.

usi-4t

FIG

2:

Example

of

a

vented

enclosure

PYLE

Woofer

Manual

BandPASS

ENCLOSURES

dioose

this

Ore

of

entiomire

tot.

•

Control

of

both

low

end

response

and

high

end

cutoff

•

Increased

efficiency

and

lower

distortion

•

Can

eliminate

need

for

crossovers

or

electronics

in

signal

path

Bandpass

enclosures

can

be

constructed

in

many

different

configurations.

Often

referred

to

as

4th,

5th,

6th,

7th,

or

8th

order

enclosures,

these

enclosures

are

named

based

on

the

sum

of

their

highpass

and

lowpass

orders.

The

common

characteristics

between

all

bandpass

enclosures

is

that

one

can

control

both

the

low

end

response

and

the

high

end

cutoff.

This

capability

allows

the

user

tremendous

fl

exibility

when

tailoring

a

sound

system

to

a

particular

vehicle.

Another

benefit

of

the

bandpass

enclosure

can

be

increased

efficiency.

Typical

passband

efficiency

gains

are

in

the

3db

range,

but

gains

over

twice

that

amount

can

be

achieved

in

some

configurations.

Lower

distortion

is

also

attainable

because

bandpass

systems

can

integrate

their

own

acoustic

low

pass

fi

lter,

making

it

possible

to

eliminate

low

end

passive

inductors

or

electronic

crossovers

from

the

signal

path.

Yet

another

benefit

in

bandpass

enclosures

is

ease

of

installation.

With

a

bandpass

enclosure,

all

of

the

sound

is

delivered

through

a

vent

(s).

This

can

be

a

big

help

in

dealing

with

space

limitations

by

only

requiring

enough

area

to

vent

the

enclosure

into

the

vehicle,

not

the

entire

woofer

opening.

Critics

of

bandpass

enclosures

feel

that

because

all

of

the

sound

is

delivered

through

a

vent,

sound

quality

may

suffer

(when

compared

to

other

direct

firing

enclosures).

A

consideration

when

contemplating

using

a

bandpass

enclosure

is

the

complexity

of

the

enclosure.

The

box

is

more

difficult

to

build

and

accessibility

to

the

woofer

for

servicing

is

limited.

In

a

4th

order

bandpass

enclosure

(12db

slope

for

highpass

and

lowpass),

the

woofer

low

frequency

tuning

is

determined

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

determines

the

response

curve

in

the

passband.

The

greater

the

volume

of

the

front

compartment

the

greater

is

the

rise

in

the

mid

passband.

Conversely,

the

smaller

the

front

compartment

the

greater

is

the

dip.

By

adding

a

series

inductor

to

a

4th

order

bandpass

enclosure

it

becomes

a

5th

order

enclosure

with

a

18db

lowpass

rolloff.

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

from

enclosure

walls.

is

y

-

FIG

3:

Example

of

a

sealed

bandpass

enclosure

FIG

4:

Example

of

a

vented

bandpass

enclosure

PYLE

Woofer

Manual

www.pyleaudio.com

Pyle PLMRDW104 PLMRDW104 Manual 1

Pyle PLMRDW104 Manual

Pyle PLMRDW104 manual content summary: