Infinity RS-2-B Service manual

SPECIFICATIONS

REV A 9/98

INFINITY SYSTEMS, INC. 250 Crossways Park Dr., Woodbury, New York 11797

REFERENCE STANDARD2A/2B

Technical Manual

REFERENCE
STANDARD 2A/2B

ACOUSTIC & ELECTRICAL SPECIFICATIONS:

• Drivers: For each channel:
Two 10-inch polypropylene woofers.
Three EMIT tweeters, one facing
rearward, and three EMIM midrange
drivers

• Frequency Response: 29 to 32,000 Hz ±2 dB
Suggested for use with amplifiers or
receivers of: 60 through 250 watts
per channel RMS

• Crossover Frequencies: 150Hz, 800 Hz, 4,000 Hz, and
8,000 Hz

• Nominal Impedance: 4 ohms

• Finish: Hand rubbed oak veneers and
solids

• Dimensions: 48 inches x 22 3/4 wide x 18 deep
(160.6 cm x 66.25 wide x 36.25)

• Shipping Weight: 200 lbs per system

PRODUCTION HISTORY:

• Introduced in 1984

• Discontinued in 1987

• Original Retail Price: 2,700.00 System

PHYSICAL SPECIFICATIONS:

COSMETIC PARTS:
Grille Assy. .025...1986B

CROSSOVER PARTS:
Pot 5 Ohm 5W .145...0103
Pot 5 Ohm 15W .145...0110
Fuse Holder .550...0363
Fuse 1.25A AGC .870...0010
Fuse 2.5A AGC .870...0024
AC Adaptor 110-14V NLA
Active Crossover NLA

DRIVERS (TRANSDUCERS)
EMIM Mid Rev. B/C .902...0012B
10” WFR Poly Clear .902...2279A (Substitute only)
EMIT Twt Sq/Blk .902...5086
Diaph Assy. Kit Tweeter .751...3722
EMIT Diaph. Assy. Midrange .751...3806

TECHNICAL SPECIFICATIONS

7

•

•

.001µF

•

10K

.018µF

8

1

U1b

•

4

3

+
–

2

•

•

•

••

••

87.2K

INPUT

2.2K

••

100K
UNEAR

100K

•

.029µF

LF LEVEL

5

LF 353

–

U1a

+

6

•

40.7K

•

5.1K

•

•

1N914

•

910pF

1 MEG

•

Mid-Bass

CONTOUR

100K

•

0.39µF

0.39µF

•

2X

47K

360K

•

••

•

••

1N414B

15K

–15V

-2.5V

TO COMMON

•

•

2.2K

••

TO

470K

0.1µF

POWER
ON

22

••

51

•

0.5-0.6V

•

VN 40AF

100µF 10V

•

3µF PP

•

.033µF PS

VN 40AF

+

•

•

•

•

100K

TO MOSFETS OF
OTHER CHANNEL

220

+18 VDC

OUTPUT

COMMON

-18 VDC

TECHNICAL SPECIFICATIONS

REV A 7/98

INFINITY SYSTEMS, INC. 250 Crossways Park Dr., Woodbury, New York 11797

REFERENCE STANDARD 2A/2B

Technical Manual

REFERENCE
STANDARD 2A/2B

+

HIGH INPUT

_

1.25 AGC 5µF PP

.15mH AC

1.25 AGC 3µF PP

.1mH AC

1.25 AGC 2µF PP .4mH AC 18Ω 5W 5Ω 5W

2.5 AGC

70µF MM

23µF MM

3.5mH LFC

.6mH AC

.3mH AC

9.5mH SIC

1mH LFC

25µF NPE 1Ω 10W

1µF MM

4.5µF MM

1,5Ω 5W

5Ω 5W

5Ω 15W

.7mH LFC

_

#39

REAR TWEETER

+

#40

#36

+

UHF TWEETER

_

#35

_

#37

LF TWEETER

+

#38

+

HIGH MIDRANGE

_

+

LOW MINRANGE

_

+

LOW INPUT

_

4.3mH MIC
+

_

+

#48
#47

–

+

#50
#49

–

WOOFERS

.7Ω 50

200µF NPE

TOP WOOFER

BOOTOM WOOFER