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Great manual, great price. Has a few of the basic operating instructions that most service manuals leave out. Complete instructions for disassembling board by board, safety precautions, schematics, complete parts list.
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I am very pleased with the service manual for my RT-909. This was an easy purchase and great procuct, and much cheaper than other venues i had looked at. This web site is now listed in my favorites list. KEEP UP THE GOOD WORK. THANKS. J. BROWN
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A very well written and easy to understand manual.
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There was no problem at all.After paying i had to wait only a few hours,than i could
download the manual in best pdf-quality.
Thank You !
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I found this service manual to be complete in every detail except for troubleshooting charts. It would be helpful if it had a set of troubleshooting charts; however it is a very good manual otherwise and for the price it is very well worth it.
Beta FifteenXdvc 15" Woofer � Technical Data
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 6.60" (167.64 mm)
IMPEDANCE CURVE
15" (381.0 MM) 97 dB 350 WRMS 18 ~ 350 HZ 4 OHMS (PER COIL) 3.18" (80.8 MM)
100.0 Ohms
30.0
10.0
3.0
1.0 20 Frequency 50 100 Hz 200 500 1k 2k
cutout diameter 13.75" (349.25 mm) outer diameter 15.65" (397.51 mm)
INFINITE BAFFLE FREQUENCY RESPONSE @ 2.83 V
105 dB In-Car 12 dB LP @ 70 Hz 100
THIELE-SMALL PARAMETERS*
VOICE COIL DC RESISTANCE: REVC (OHMS) . . . . . . 2.20 VOICE COIL INDUCTANCE @ 1 KHZ: LEVC (MH) . . . . . . . 2.68 DRIVER RADIATING AREA: SD (IN 2) . . . . . . . 127.93 MOTOR FORCE FACTOR: COMPLIANCE VOLUME: SUSPENSION COMPLIANCE: MOVING MASS, AIR LOAD: MOVING MASS, DIAPHRAGM: FREE-AIR RESONANCE: MECHANICAL Q: ELECTRICAL Q: TOTAL Q: MAGNETIC-GAP HEIGHT: VOICE-COIL HEIGHT: MAXIMUM EXCURSION: SD (CM2). . . . . . . 829.00 BL (TM) . . . . . . . . 13.97 VAS (FT3) . . . . . . . . 8.20 VAS (LITERS) . . . . 193.49 CMS (µM/N) . . . . 198.27 MMS (GRAMS). . . . 173.96 MMD (GRAMS) . . . 160.24 FS (HZ) . . . . . . . . 27.10 QMS. . . . . . . . . . . 10.10 QES . . . . . . . . . . . . 0.33 QTS . . . . . . . . . . . . 0.32 HAG (IN) . . . . . . . . . 0.35 HAG (MM) . . . . . . . . 9.00 HVC (IN) . . . . . . . . . 0.76 HVC (MM) . . . . . . . 19.40 XMAX (IN) . . . . . . . . 0.20 XMAX (MM) . . . . . . . 5.20
95 90 85
Out-Of-Car
80
75
70
65 20 Frequency 50 100 Hz 200 500 1k
C
2k
INFINITE BAFFLE EXCURSION/GROUP DELAY @ 150 W
20.0 Xd mM T mSec 10.0 17.5 7.5
15.0
5.0
12.5
Group Delay
2.5
10.0 7.5 5.0
0.0 -2.5 -5.0
2.5 Transducer Excursion 0.0
-7.5
*VOICE COILS CONNECTED IN PARALLEL
20
Frequency
50
100 Hz
200
500
1k
-10.0 2k
C
Ininfity Technical Data . . 8�53
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