Boston Acoustics PowerVent PV1000 Скачать руководство пользователя страница 4

Specifications

PV1000

PV800

PV600

PV400

Frequency Response (

±

3dB)

22–150Hz

26–150Hz

29–150Hz

44–150Hz

Subwoofer Amplifier Power

1000 watts continuous

300 watts  continuous

120 watts  continuous

65 watts  continuous

<.5% THD, 850 watts, 20-150Hz

<.5% THD, 250 watts, 20-150Hz

<.5% THD, 100 watts, 20-150Hz

<.5% THD, 50 watts, 30-150Hz

Subwoofer Crossover

50–150Hz

50–150Hz

75–150Hz

75–150Hz

24dB/octave low-pass

24dB/octave low-pass

24dB/octave low-pass

24dB/octave low-pass

Crossover Bypass

Yes

Yes

Yes

Yes

Bass Unit

10" (250mm) DCD

12" (300mm) DCD

10" (250mm) DCD

7" (180mm) DCD

down-firing

down-firing

down-firing

internal

Passive Radiator

10" (250mm)

rear-firing

Enclosure Type

Passive Radiator

Dual Ported

Dual Ported

Bandpass

Dimensions (H x W x D)

14

3

/

4

  x 11

1

/

2  

x 14

1

/

8

"

18  x 14

1

/

4  

x 19"

16

1

/

2

  x 11

7

/

 x 16

1

/

8

"

19

1

/

2

  x 10 x 11"

(375 x 293 x 359mm)

(458 x 363 x 483mm)

(420 x 302 x 410mm)

(496 x 254 x 280mm)

Weight

40 lbs (18kg)

40 lbs (18kg)

30 lbs (14kg)

25 lbs (12kg)

Finish

Cherry or Black

Black Ash

Black Ash

Black Ash

Wood Veneer

Vinyl Veneer

Vinyl Veneer

Vinyl Veneer

PV1000 Technical Highlight: RadialVent

 Cooling

It's an immovable law of physics: If you want deep bass response from a small
enclosure, you need lots of power. There's no way around it. In the case of the
PV1000, we use a high-efficiency 

1000-watt

 amplifier to get response down to

22Hz from a remarkably small cabinet. But high power is only half of the
equation. We also need a rugged, high-output bass driver that can handle 1000
watts safely.

When a signal is applied to a voice coil, it heats up, and in turn, heats the air and the
speaker basket around it. Under extremely high power input conditions, the heat at the
voice coil builds up faster than the basket can reradiate it, eventually leading to thermal

failure or speaker "burn out."

To meet this challenge, Boston  engineers developed RadialVent, a  patented system
where the driver's action draws in cool air and circulates it though the double wall

of aluminum in the driver's basket (see blue arrows). The aluminum basket

effectively acts as a heat sink with forced-air cooling. The drawn air also provides

convective cooling for the basket which has absorbed heat from the voice coil. The

driver's motion then expels this heated air through the vents (red arrows). The net

result is a speaker that can operate safely at very high power levels, without danger

of thermal overload.

300 Jubilee Drive Peabody, MA 01960 978-538-5000  Fax: 978-538-5199

Specifications subject to change without notice. BassTrac, RadialVent and DCD are trademarks and Boston, Boston Acoustics and PowerVent are

registered trademarks of Boston Acoustics, Inc. © 2000 Boston Acoustics, Inc. All rights reserved.

90Hz, 6dB/octave high-pass

B o s t o n A c o u s t i c s . c o m

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