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The AKAI 1720 model reel to reel tape recorder described in this Manual is quite an old unit - circa late 1960's. As a consequence, the description of the mechanical details - and adjustments thereof - is quite critical. The manual does this quite well. The schematics are also well presented and have detailed PCB overlays. Probably the only negative is that some half-tone detail has been lost from the original manual as it has been scanned in simple B&W.
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Perfect source for service manuals: fast and professional transaction; high quality, perfect readable and largely scaleable PDF; complete schemes, diagrams and spare part list. Tnx a lot, cu again!!!!
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I got your link from a friend and I must say that I am really satisfied with your service. Specially this B&O manual I didn't find anywhere on the web... but you could deliver it :-) . You deliver very fast and the copy is of good quality. So your webpage is bookmarked. Thanks
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This was the Sony CCU-500A Service manual I was looking for.
The price was reasonable.
The permission to download was quck.
I will use Owner-Manual.com for all my manual needs.
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Excellent printing quality.
A complete and very usefull service manual with all details.
GREAT SERVICE AT VERY LOW PRICE!
A+++++++++++++++++++++++++
Kappa Perfect10.1d 10" Woofer �Technical Data
CAR AUDIO
SPECIFICATIONS
DIAMETER: SENSITIVITY (2.83 V @ 1 M): POWER HANDLING: FREQUENCY RESPONSE: NOMINAL IMPEDANCE: VOICE-COIL DIAMETER: DIMENSIONS:
mounting depth 6.00" (152.40 mm)
10" (254.0 MM) 94 dB (IN-CAR @ 40 HZ) 350 WRMS (1,400 WPEAK) 18 ~ 150 HZ 4 OHMS (PER COIL) 2.0" (50.8 MM)
SEALED BOX VOLUME (INCLUDES DRIVER DISPLACEMENT)
Kappa Perfect10.1d
(side view)
VBOX = 0.60 ft3 (16.99 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
cutout diameter 9.10" (231.14 mm) outer diameter 10.31" (261.94 mm)
SEALED FREQUENCY RESPONSE @ 2.83 V
95 dB In-Car 12 dB LP @ 90 Hz 90
THIELE-SMALL PARAMETERS*
VOICE COIL DC RESISTANCE: DRIVER RADIATING AREA: 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: R
EVC
85 80
Out-Of-Car
(OHMS) . . . . . . 2.10
VOICE COIL INDUCTANCE @ 1 KHZ: L EVC (MH) . . . . . . . 2.12 S D (IN 2) . . . . . . . . 53.63 S D (CM2) . . . . . . 346.00 BL (TM) . . . . . . . . 13.01 VAS (FT3) . . . . . . . 1.095 VAS (LITERS) . . . . . 31.00 C MS (µM/N) . . . . 182.35 MMS (GRAMS). . . . 184.80 MMD (GRAMS) . . . 181.10 FS (HZ) . . . . . . . 27.417 Q MS . . . . . . . . . . . 8.20 Q ES . . . . . . . . . . . . 0.40 Q TS . . . . . . . . . . . . 0.38 H (IN) . . . . . . . . . 0.39
AG
75 70 65 60
55
C
20 Frequency
50
100 Hz
200
500
1k
2k
SEALED TRANSDUCER EXCURSION @ 400 W
20.0 17.5 Xd mM
15.0
12.5 10.0 7.5 5.0 2.5
HAG (MM) . . . . . . . . 9.80 HVC (IN) . . . . . . . . . 1.50 HVC (MM) . . . . . . . 38.10 X MAX (IN) . . . . . . . .0.56 X MAX (MM) . . . . . . 14.15
*VOICE COILS CONNECTED IN PARALLEL
0.0
C
20
Frequency
50
100 Hz
200
500
1k
2k
Infinity Systems, Inc. � 250 Crossways Park Drive � Woodbury, NY 11797 � VOICE: 516-496-3400 � FAX: 516-496-4868 � www.infinitysystems.com
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