Infinity BETA 40 User Manual
LF
INPUT
L.F.
C1
75.5uf
100V
L1
2.6mH
L2
0.8mH
+
—
RED
BLK
+
—
CROSSOVER
NETWORK
352141-001
HIGH-FREQUENCY
TRANSDUCER
351572-001
.250
.205
17" GRN
.250
17" GRN
.205
17" GRN/BLK
17" GRN/BLK
RED
BLK
+
—
GRN/BLK
GRN
—
+
GRN/BLK
GRN
—
+
—
—
+
WHT/BLK
WHT
YEL/BLK
YEL
+
LOW-FREQUENCY
TRANSDUCERS
351506-001
MF/HF
INPUT
L5
0.1mH
L4
0.92mH
H.F.
M.F.
C3
18.5uf
100V
L3
1mH
.110
.205
+
—
.205
.250
17" WHT/BLK
17" WHT
26" YEL/BLK
26" YEL
C4
5uf
100V
C2
27uf
100V
MID-FREQUENCY
TRANSDUCER
338568-001
Technical Manual
Beta 40
ACOUSTIC & ELECTRICAL SPECIFICATIONS:
• Nominal Impedance 8Ω
• Max Amp Power 200 watts*
• Frequency Response 45Hz – 20kHz (±3dB)
40Hz – 40kHz (–6dB)
• Sensitivity 91dB (2.83V @ 1 meter)
• Crossover Frequencies 600Hz, 3.2kHz; 18dB/Octave
woofer; 12dB/octave mid/twt
SYSTEM COMPONENTS:
• Cabinet Beta 40 (Not for Sale)
• Grille Black (for BLK) 352001-003
Grille Gray (for BE & CH) 352001-004
• Low-Frequency Transducer Dual 6-1/2" (165mm) CMMD,
magnetically shielded
351506-001
DC Resistance 7.9 ohms ±10%
• Mid-Frequency Transducer 5" (130mm) CMMD,
™
magnetically shielded
338568-001
DC Resistance 4.4 ohms ±10%
• High-Frequency Transducer 1" (25mm) CMMD,
™
magnetically shielded
351572-001
DC Resistance 3.5 ohms ±10%
• Crossover Network 352141-001
PACKAGING
23 25
24
22
AURAL SWEEP TEST SPECIFICATIONS:
• System Aural Sweep Test 6.0V Input 40Hz to 20kHz
• L.F. Aural Sweep Test 5.0V Input 40Hz to 1kHz
• M.F. Aural Sweep Test 4.0V Input 500Hz to 4kHz
• H.F. Aural Sweep Test 2.83V Input 3kHz to 20kHz
PHYSICAL SPECIFICATIONS:
• Dimensions 37" x 9-13/16" x 13-1/8"
(H x W x D) (950mm x 250mm x 333mm)
• Weight 50.2 lb (22.8kg) Each
WARRANTY:
• Refer to Warranty Statement packed with each product.
™
* The maximum recommended amplifier power rating will ensure
proper system headroom to allow for occasional peaks. We do not
recommend sustained operation at these maximum power levels.
Beta 40 WIRING DIAGRAM
6
21
Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797
Legend on Page 2
22
Beta 40 SCHEMATIC
Beta 40
Rev 1 8/04
Technical Manual
Beta 40
EXPLODED VIEW
11
5
12
96 20
8163
2
14
17113
Beta 40 Cabinet – Not for Sale
18
4 14
7
26
1510
19
ITEM
NO. DESCRIPTION QTY. PART NO.
1. Woofer, BT165JWS 2 351506-001
2. Midrange, BT130HMS 1 338568-001
3. Tweeter 1 351572-001
4. Crossover Network 1 352141-001
5. Faceplate, Black (for BK) 1 351824-001
Faceplate, Gray (for BE & CH) 1 351824-002
6. Assy, Grille, Black (for BK)
Assy, Grille, Gray (for BE & CH) 1 352001-004
7. Assy, Port Tube 1 351801-001
Gasket, Faceplate 1 351920-001
8.
9. Trim Ring, Woofer 2 351652-001
10. Terminal Cup w/Binding Posts 1 351317-001
11. Cup, Grille (Black for BK) 8 333249-001
Cup, Grille (Gray for BE & CH) 8 333249-003
12. Screw (faceplate 2 top screws only) 2 907502-012
PB, FPH, #6 x .75"
13. Screw (twt faceplate btm, wfr 12 903802-016
trim rings) PB, HXS, #8 x 1" BE, CH;
same as above for BK model 12
TO SERVICE THE BETA 40
Remove the grille.
1. Tweeter/Midrange: Remove the (2) rubber grille retainers on the mid/twt faceplate; this can be accomplished by carefully pulling them out of
their cavities with long-nosed pliers or similar tool.
2. Remove the (2) Phillips screws that are now exposed.
3. Remove the (4) remaining Hex screws on the front faceplate.
4. Carefully separate the front faceplate, with tweeter attached, from the cabinet.
5. Woofer: Remove (4) trim ring screws; remove trim ring. Remove (8) remaining woofer screws.
1 352001-003
72216
ITEM
NO. DESCRIPTION QTY. PART NO.
14. Screw (network, midrange) 8 63563
PB, OVHDPH, #6 x .75"
15. Screw (terminal cup) 4 61867
PB, PPH, #8 x .75" BLK
16. Screw (tweeter mounting) 2 905401-006
MS, PPH, H/L, 6-19 x .375"
17. Screw (woofer screws) 16
PB, PPH, #8 x .75" BLK
18. Midrange Flower Pot, Plastic 1 334072-001
19. Rubber Foot, Blk, Assy
20. Logo, Gold/Silver Infinity 1 351617-001
21. Carton-Beta40BK 1 352135-001
Carton-Beta40BE 1 352135-002
Carton-Beta40CH 1 352135-003
22. End Pad, Top & Bottom 2 352136-001
23. Spike Foot Set 1
24. Owner’s Manual 1 352036-001
25. 5-Year W
26. Shorting Straps
arranty Card, Infinity 1 335841-003
1 Set CS06-6
900101-012
4 338037-002
338076-001
Beta 40
Infinity Systems, 250 Crossways Park Drive, Woodbury, New York 11797
Rev 1 8/04
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