PENTON
ハイ・インピーダンス アッテネーター

PENTON
ハイ・インピーダンス
2012 年

アッテネーター

2月1日

ハイ・インピーダンス用アッテネーターは数々の製品がありますが､減衰ステップが 6 dB の製品がほとんどで､もっと細かい調整をしたい場合に適切な製品がありませんでした。トータル減衰量も 3 ステップ程度しかなく､多くのハイ・インピーダンス仕様のスピーカーシステムを使って細かく調整をすることができませんでした。
PENTON 社の VCT シリーズ・アッテネーターは､【調整ステップが 3 dB】､【トータル減衰量が 30 dB】という仕様を持った製品で､ハイ・インピーダンスのシステムをより細かく調整したい設備にはうってつけの製品です。100 ボルトラインで 25 ワット(70.7 ボルトでは 12 ワット)の製品である VCT25 と 80 ワット(70.7ボルトラインでは 40 ワット)の製品である VCT80 の二種類の製品があります。アッテネーターを使うことによる挿入損失も VCT25 が 0.4 dB､VCT80 が 0.6 dB と非常に低く､周波数特性も VCT25 が 40-20,000Hz､VCT80 が 20-20,000 Hz とハイ・インピーダンスの設備では驚異的な仕様を備えています。
ともに 100 ボルトと 70.7 ボルトのハイ・インピーダンス設備に対応ができます。
注意:
1.

減衰量を大きくすると低域の周波数特性が変化してクリップを起すことがあります。データーシートに記載された周波数特性に注意してお使いください。

2.

30 dB 減衰の位置にストッパーがありません。直接 0 dB に変化しますので注意してください。

製品名
VCT25
VCT80仕様25 W (100V ライン)､12 W (70.7 ボルトライン)
3 dB ステップ､最大 30 W 減衰､挿入損失 0.4 dB
80W (100V ライン)､40 W (70.7 ボルトライン)
3 dB ステップ､最大 30 W 減衰､挿入損失 0.6dB

VCT25

標準小売価格
消費税なし

消費税込み

¥11,800¥12,300¥11,800¥12,300

VCT80

株式会社エムアンドエヌ 〒160-0015 東京都新宿区大京町 2-4 ｻｳﾝﾄﾞﾋﾞﾙ 3F

TEL 03-5368-8840 FAX 03-5368-8841 URL http://www.mnsv.co.jp

LOUDSPEAKER VOLUMECONTROLf VCT25TECHNICALS P E C I F I C AT I O N S

Rated power 100 volt/70.7 volt line, Watts

25 /12

Transformer output steps@ 100 volt line, Volts

100/70.7/50/35.36/25/17.68/

Transformer output steps@ 70.7 volt line, Volts

70.7/50/35.36/25/17.68/12.50/

Attenuation Per Step, dB

312.50/8.84/6.25/4.42/3.12/OFF
8.84/6.25/4.42/3.12/2.21/OFF
Total Attenuation, dB

30

Attenuation Positions

10 plus OFF

Insertion Loss, dB

0.4

Effective frequency range @1k Hz-1dB, Hz

40–20,000

Dimensions, front & depth, mm

84 x 84 x 54

Net weight, Kgs

Flush: 0.15, Surface: 0.20

Colour/Finish

WhiteMaterial

ABS Moulded

Mounting

Flush and Surface

EASE, CATT, ULYSSES and Architectural specifications are supplied on the disc inserted at the back of this folder
Manufacturer reserves the right to alter specifications without notice – March 2007

39f VCT2539

LOUDSPEAKER VOLUME CONTROL1- 203939

r flush and surface mountside view unit: mmr front viewunit: mm

391536

1- 20
1- 20

39

Printed Circuit Board

1- 20

1084

48
- O /P+

1- Ø 20Z YX5984

47

1- 20

Standard connection
1. Short "Y" and "Z".
2. Connect as shown on the diagram.

+O /P
-X
Y

Amplifier
100v or 70v
OutputZO /P-+Y

Amplifier
100v or 70v
OutputZX

23.5 x 5.5

Tri-wire restoration via remote relay
1. Connect amplifier output to "X", "Z"and "Y" as shown on the diagram.

A: Frequency R es pons e, Magn dB Re 1.00 0V, SS R Fu nd10Source0dB- 3 dB

- 6 dB- 9 dB-10-1 2 d B-1 8 d B-20-2 4 d B-3 0 d B-30-402020 0Hz2kFrequency Response

20 k
BKPenton UK Ltd
Unit 2 Teville Industrials | Dominion Way | Worthing | West Sussex | BN14 8NW
T: +44 (0)1903 215315 | F: +44(0)1903 215415 | E: SALES@PENTONUK.CO.UK

www.penton.org

LOUDSPEAKER VOLUMECONTROLf VCT25R
TECHNICALS P E C I F I C AT I O N S

Rated power 100 volt/70.7 volt line, Watts

25 / 12

Transformer output steps@ 100 volt line, Volts

100/70.7/50/35.36/25/17.68/

Transformer output steps@ 70.7 volt line, Volts

70.7/50/35.36/25/17.68/12.50/

Attenuation Per Step, dB

312.50/8.84/6.25/4.42/3.12/OFF
8.84/6.25/4.42/3.12/2.21/OFF
Total Attenuation, dB

30

Attenuation Positions

10 plus OFF

Insertion Loss, dB

0.4

Effective frequency range @1k Hz-1dB, Hz

40-20,000

Dimensions, front & depth, mm84x84x54

Net weight, Kgs

Flush: 0.17, Surface: 0.22

Colour/FinishWhite

Material

ABS MouldedMounting

Flush and Surface

EASE, CATT, ULYSSES and Architectural specifications are supplied on the disc inserted at the back of this folder
Manufacturer reserves the right to alter specifications without notice – March 2007

f VCT25R

Amplifier
100v or 70v
OutputY

unit: mm- O /P +r surface
mount box
rear viewZr frontview

X

LOUDSPEAKER VOLUME CONTROL

unit: mm84

Tri-wire restoration via remote relay
1. Set function selector to "T".
2. Connect amplifier output to "X","Z" and "Y"
as shown on the diagram.

59- RLY+

Wiring I

unit: mm
15- ALM+ZXr side view

YProgramAmplifierOutput- O /P +

8484

Ø20

23.5 x 5.5

Dual amplifier sound restoration
1. Set function selector to "D" .
2. Connect program amplifier output to"X" and "Y", paging amplifier to " - ALM+",
24 Vdc to " - RLY+" as shown on the diagram.

Printed Circuit Board

36

65

10

- O /P +Y- RLY+

50

Z + O /P- + ALM- + RLY-

123

Amplifier
100v or 70v
OutputTwo wire relay controlled restoration
1. Set function selector to "N", pre-set
restoration sound level (1=0 ,2=-3 ,3=-6dB ).
2. Connect amplifier output to "X" and "Y",24 Vdc to " - RLY+" as shown on the diagram.

12X

9Y

67

Pre-set

ZX

D T N

Flus
A: Frequency R es ponse, Magn dB Re 1.00 0V , SS R Fu nd10Source

0dB- 3 dB- 6 dB- 9 dB-10-1 2 d B-1 8 d B-20-2 4 d B-3 0 d B-30-402020 0Hz

2kFrequency Response

20 kBKPenton UK LtdUnit 2 Teville Industrials | Dominion Way | Worthing | West Sussex | BN14 8NW
T: +44 (0)1903 215315 | F: +44(0)1903 215415 | E: SALES@PENTONUK.CO.UK

www.penton.org

LOUDSPEAKER VOLUMECONTROLf VCT80
TECHNICALS P E C I F I C AT I O N S

Rated power 100 volt/70.7 volt line, Watts

80 /40Transformer output steps@ 100 volt line, Volts

100/70.7/50/35.36/25/17.68/

Transformer output steps@ 70.7 volt line, Volts

70.7/50/35.36/25/17.68/12.50/

Attenuation Per Step, dB

312.50/8.84/6.25/4.42/3.12/OFF
8.84/6.25/4.42/3.12/2.21/OFF
Total Attenuation, dB

30

Attenuation Positions

10 plus OFF

Insertion Loss, dB

0.6

Effective frequency range @1k Hz-1dB, Hz

20–20,000

Dimensions, front & depth, mm

149 x 87 x 61

Net weight, Kgs

Flush: 0.33, Surface: 0.42

Colour/Finish

White

Material

ABS Moulded

Mounting

Flush and Surface

EASE, CATT, ULYSSES and Architectural specifications are supplied on the disc inserted at the back of this folder
Manufacturer reserves the right to alter specifications without notice – March 2007

f VCT80
LOUDSPEAKER VOLUME CONTROLr sideview
unit: mm

unit: mm

Printed Circuit Board

8787
1662

39Z Y

unit: mmr rearview- O /P+r frontview

X

2 - 3 .5 x 5 .5

121149110

152 - Ø3 .5

2- Ø207.5

59+O /P-X
Y

Amplifier
100v or 70v
OutputZO /P-+Y

Amplifier
100v or 70v
Output

ZX

47

Tri-wire restoration via remote relay
1. Connect amplifier output to "X", "Z"and "Y" as shown on the diagram.

Standard connection
1. Short "Y" and "Z".
2. Connect as shown on the diagram.

A: Frequency R espons e, Magn dB Re 1.000V , SS R Fu nd10Source0dB- 3 dB- 6 dB- 9 dB-10-1 2 d B-1 8 d B-20-2 4 d B-3 0 d B-30-402020 0Hz2kFrequency Response

20 k
B

KPenton UK Ltd
Unit 2 Teville Industrials | Dominion Way | Worthing | West Sussex | BN14 8NW
T: +44 (0)1903 215315 | F: +44(0)1903 215415 | E: SALES@PENTONUK.CO.UK

www.penton.org

LOUDSPEAKER VOLUMECONTROL

f VCT80R
TECHNICALS P E C I F I C AT I O N S

Rated power 100 volt/70.7 volt line, Watts

80 / 40

Transformer output steps@ 100 volt line, Volts

100/70.7/50/35.36/25/17.68/

Transformer output steps@ 70.7 volt line, Volts

70.7/50/35.36/25/17.68/12.50/

Attenuation Per Step, dB

312.50/8.84/6.25/4.42/3.12/OFF
8.84/6.25/4.42/3.12/2.21/OFF
Total Attenuation, dB

30

Attenuation Positions

10 plus OFF

Insertion Loss, dB

0.6

Effective frequency range @1k Hz-1dB, Hz

20-20,000

Dimensions, front & depth, mm

149x87x61

Net weight, Kgs

Flush: 0.35, Surface: 0.44

Colour/FinishWhiteMaterial

ABS Moulded

Mounting

Flush and Surface

EASE, CATT, ULYSSES and Architectural specifications are supplied on the disc inserted at the back of this folder
Manufacturer reserves the right to alter specifications without notice – March 2007

f VCT80R
LOUDSPEAKER VOLUME CONTROLr front view r rear view
unit: mmX

8787

ZYAmplifier
100v or 70v
Output- O /P +unit: mm

2 - 3 .5 x 5 .5

Tri-wire restoration via remote relay
1. Set function selector to "T".
2. Connect amplifier output to "X","Z" and "Y"as shown on the diagram.
121

X

2- Ø20- ALM+YZProgramAmplifierOutput

59- RLY+- O /P +149

2 - Ø3 .5

Wi i

3962
X

Y- RLY+- O /P +X
Amplifier
100v or 70v
Output

Z

123

15

D T N

Pre-set110

unit :mm

Z Y

j sideview- RLY+ - ALM+ - O /P+

16

I

Dual amplifier sound restoration
1. Set function selector to "D" .
2. Connect program amplifier output to"X" and "Y", paging amplifier to " - ALM+",
24 Vdc to " - RLY+" as shown on the diagram.

Printed Circuit Board

7.5

Two wire relay controlled restoration
1. Set function selector to "N", pre-set
restoration sound level (1=0 ,2=-3 ,3=-6dB ).
2. Connect amplifier output to "X" and "Y",24 Vdc to " - RLY+" as shown on the diagram.

47

A: Frequ ency Res pons e, Magn dB Re 1.000V, SS R Fund
10Source

0dB- 3 dB- 6 dB- 9 dB-10-1 2 d B-1 8 d B-20-2 4 d B-3 0 d B-30-402020 0HzFrequency Response

2k20 kBKPenton UK Ltd
Unit 2 Teville Industrials | Dominion Way | Worthing | West Sussex | BN14 8NW
T: +44 (0)1903 215315 | F: +44(0)1903 215415 | E: SALES@PENTONUK.CO.UK

www.penton.org

PENTON
ハイ・インピーダンス アッテネーター

株式会社エムアンドエヌ 〒160-0015 東京都新宿区大京町 2-4 ｻｳﾝﾄﾞﾋﾞﾙ 3F

TEL 03-5368-8840 FAX 03-5368-8841 URL http://www.mnsv.co.jp