background image

NF-1 & NF-1A

NF-1 & NF-1A

4

17

1. SPECIFICATIONS

Enclosure system

2-way bass-reflex system

Drivers

160 mm HP woofer x 1 (low-leakage type)

20 mm Soft-Dome tweeter x 1 (low-leakage type)

Impedance

Frequency Response

50 Hz ~ 40 kHz

Crossover Frequency

10 kHz

Sound Pressure Level

89 dB/W (1 m)

Input (Program)

120 W

Enclosure volume

11 liters

Weight

Approx. 9.1 kg

    NF-1

Specifications and physical appearance are subject to change without notice for product improvement.

40000

20000

10000

5000

2000

1000

500

200

100

50

20

80

90

70

60

50

40

30

20

100

10

Hz

dB

10

Second Distortion
Third Distortion

<NF-1 Distortion Characteristic>

30º

60º

40000

20000

10000

5000

2000

1000

500

200

100

50

20

90

100

80

70

60

50

40

30

110

10

Hz

dB

8

16

32

 

4

<NF-1 Frequency / Impedance Characteristic>

274 mm

267 mm

340 mm

240 mm

• NF-1 Dimensions

4. CIRCUIT & BLOCK DIAGRAMS

    Power Amp & SW PCB

1

2

4

5

6

7

8

9

10

11

1

1

1

3

2

8

4

1

5

7

6

3

1

2

1

1

F1

FUSE

C506   47p CER

R507  10K

U502

LM3886TF

IN+

OUT3

+V

IN-

+38V

+V

NC

GND

MUTE

-V

R506

150

C505

1/50

C509

0.1 PES

R509

10

NC

NC

R505

1K

C508

220p CER

-38V

R508

20K

TO LF

SPEAKER

J502

TO HF

SPEAKER

1

2

3

4

R515

10K

C513

47p CER

1

2

4

5

6

7

8

9

10

11

U510

LM3886TF

IN+

OUT3

+V

IN-

+38V

+V

NC

GND

MUTE

-V

NC

NC

-38V

C517

0.1 PES

R516

20K

C516

220p CER

U501B

BA4560N

C511

0.0022 PES

R512

1K

C512

100/16

R510

10K

R511

10K

C510

0.0039 PES

R504

20K

R503

10K

C503

0.01 CER

U501A

BA4560N

C504

0.01 CER

C502

0.0022 PES

+15V

-15V

C501

0.0022 PES

+15V

-15V

1

2

3

4

5

W501

TO INPUT

R517

10

R513

130

+15V

-38V

C008

100/16

R004

270  1/2W RF

+38V

U001

DTC114ES

R003

470K

Q001

2SD1200F

C002

4700/63

D002

MTZJ15

C006

10/16

C004

1/50

R001

4.7K

C007

10/16

D003

MTZJ15

Q002

2SB889F

-15V

R002

4.7K

C005

1/50

C003

4700/63

-38V

R005

270  1/2W RF

C013

NON

D001

GBU6D

CONN-M-03

C014

NON

J501

1

2

3

1

2

3

T1

TRANSFORMER POWER

W6

100V: GRY

120V: BRN

230V: VIO  

S1

SW POWER

W3

W5

W4

C011

0.0047

C012

NON

L1

BEAD 6H

L2

BEAD 6H

J001

AC IN

230V: 1A

100/12V: 3.15A

W1

BRN

BRN

WHT

GND

Summary of Contents for NF-1

Page 1: ...al Model NEAR FIELD STUDIO MONITOR SPEAKER SYSTEM FOSTEX CORPORATION 3 2 35 Musashino Akishima Tokyo Japan 196 0021 FOSTEX CORPORATION OF AMERICA 15431 Blackburn Ave Norwalk CA 90650 U S A PRINTED IN JAPAN FEB 2000 8288790000 ...

Page 2: ...e point where they exit from the appliance Cleaning The appliance should be cleaned only as rec ommended by the manufacturer Nonuse Periods The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time Object and Liquid Entry Care should be taken so that objects do not fall and liquids are not spilled into the en closure through openings Damage requ...

Page 3: ...20 4 7K 15V 1 2 J103 TO POWER LED J104 TO POWER AMP 1 2 3 4 5 15V R117 2K C119 NON C132 1 50 15V U103A BA4560N R141 10KB C115 10 16 C133 1 50 R116 47K 15V R118 3K C114 1 50 R119 1 6K TWEETER LEV HI MID ATT OFF ON HI FREQ 3dB 0dB 3dB LO FREQ 3dB 0dB 3dB C136 10 16 S130D R137 20K C135 NON S110A TABLE OF CONTENTS NF 1 owner s manual 8288457000 for export domestic model NF 1A owner s manual 8288459000...

Page 4: ...8 9 10 11 1 1 1 3 2 8 4 1 5 7 6 3 1 2 1 1 F1 FUSE C506 47p CER R507 10K U502 LM3886TF IN OUT3 V IN 38V V NC GND MUTE V R506 150 C505 1 50 C509 0 1 PES R509 10 NC NC R505 1K C508 220p CER 38V R508 20K TO LF SPEAKER J502 TO HF SPEAKER 1 2 3 4 R515 10K C513 47p CER 1 2 4 5 6 7 8 9 10 11 U510 LM3886TF IN OUT3 V IN 38V V NC GND MUTE V NC NC 38V C517 0 1 PES R516 20K C516 220p CER U501B BA4560N C511 0 0...

Page 5: ... ALU 16V 10µF 20 SME VB C132 133 8232 1461 05 VT ALU 50V 1µF 20 SME VB C134 8232 9012 22 VT PES 50V 0 0022µF 5 AMZF C135 N A C136 8232 1431 06 VT ALU 16V 10µF 20 SME VB MISCELLANEOUS Ref No Part No Description E001 Wire jumper F5 E002 Wire jumper F10 J101 8245 3390 09 Connector PI jack phone YKB21 5006 J102 8245 2680 03 Connector PI jack XLR NC3FAH2 0 J103 8245 0530 02 Connector PI jack 8283 2P WH...

Page 6: ...Ω 5 R515 8230 1381 03 HT Carbon 1 4W 10kΩ 5 R516 8230 1382 03 HT Carbon 1 4W 20kΩ 5 R517 8230 1381 00 HT Carbon 1 4W 10Ω 5 CAPACITORs ALU Electrolytic type CER Ceramic type PES Mylar type Ref No Part No Description C002 003 8232 2054 78 VT ALU 63V 4700µF 20 SMH VNSN C004 005 8232 1461 05 VT ALU 50V 1µF 20 SME VB C006 007 8232 1431 06 VT ALU 16V 10µF 20 SME VB C008 8232 1431 07 VT ALU 16V 100µF 20 ...

Page 7: ...7280 00 Damping material 490 x 190 x 10 6 8214 3940 00 Bolt M3 torx button L20 T included in the enclosure assy 7 8214 3930 00 Bolt M4 torx button L20 T included in the enclosure assy 8 8216 7240 00 HP reflector NF 1 not included in the enclosure assy 9 8245 3580 00 Terminal CL S48 1 10 8276 9200 00 Cord red L 350 11 8276 9200 01 Cord blk L 350 NF 1 OVERALL EXPLODED VIEW PARTS LIST Ref No Part No ...

Page 8: ...F 1A 12 8216 7340 02 Sheet connector NF 1A 13 8221 3290 00 Bracket connector NF 1A 14 8207 0002 25 Bushing SR 6N3 4 15 8216 7350 00 Sheet chassis NF 1A 16 8218 7950 00 Plate name NF 1A NF 1A OVERALL EXPLODED VIEW Speaker Enclosure Section 1 2 4 5 8 3 6 7 PO WE R 8 9 10 11 12 13 14 BTP3 x 16BZn 15 16 Foil side of Input PCB assy INPUT NF 1A R139 R116 R119 R118 R128 R125 R127 R132 R136 C134 R133 R134...

Page 9: ... PCB assy SW NF 1A 24 8204 0580 04 Spacer 6 M3 x 6 25 8242 2680 00 Transformer power 120V USA CND NF 1A 8242 2690 00 Transformer power 230V EUR UK NF 1A 8242 2700 00 Transformer power 100V JPN NF 1A 26 8253 4230 00 SW WI rocker power SDDLA1 27 8216 7340 01 Sheet transformer NF 1A 28 8245 3400 00 Nut phone jack 29 8221 3360 00 Bracket PCB input NF 1A 30 8239 1003 19 Fuse 20 TLAG 3 15A 125V USA CND ...

Page 10: ...06 R507 R505 R516 R001 Q001 R002 Q002 U501 U001 W501 1 1 3 1 5 11 1 11 1 NF 1A PCB Pattern Drawing Parts side of Power Amp PCB assy D001 J501 P TRANS C013 C003 R517 U510 1 1 3 B B E E 11 U502 1 11 LF HOT HF HOT C517 R513 D003 C503 C504 R503 C510 R510 R511 C511 C504 C502 D002 C516 R512 J502 SPEAKER 1 4 R515 R003 R508 R505 R506 C508 C509 R507 C506 R509 R516 C512 C008 R002 R001 R005 R004 POWER AMP 82...

Reviews: