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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+++++++++++++++++++++++++
Reference 2000.1
Technical Manual
Reference
� � � � � Nominal Impedance Max Amp Power Frequency Response Sensitivity Crossover Frequency
2000.1
SYSTEM COMPONENTS: (cont.)
DC Resistance � Crossover Network 5.8 ohms ±10% 331596-002
ACOUSTIC & ELECTRICAL SPECIFICATIONS
8 ohms 100 watts 55Hz � 20kHz 88 dB SPL, 1 watt @ 1 meter 3300Hz
AURAL SWEEP TEST SPECIFICATIONS:
� System Aural Sweep Test 6.0V Input 20 Hz to 20 kHz � L.F. Aural Sweep Test 6.0V Input 20 Hz to 4 kHz � H.F. Aural Sweep Test 2.0V Input 2 kHz to 20 kHz
SYSTEM COMPONENTS:
� Cabinet (Black Ash) (Cherry) � Grille � Low Frequency Transducer DC Resistance � High Frequency Transducer
Top Foam 331277-001
331230-001 (Not for sale) 331230-002 (Not for sale) 333205-001 5 1/4� (125mm) Co-injected woofer, shielded 330588-001 5.1 ohms ±10% 1/2� (12mm) Polycarbonate Tweeter 331062-001
PHYSICAL SPECIFICATIONS
� Enclosure dimensions: 10 1/2� x 6 1/2� x 8� (H x W x D) (266 x 165 x 203mm)
SHIPPING WEIGHT:
� 8.7 lbs. (3.9 kg) Sold in Pairs
WARRANTY:
� Refer to Warranty Statement packed with each product.
PACKAGING
Bottom Foam 331277-001
Outer Carton 331278-001
yy ;; yyy ;;; yy ;; yyy ;;; yy ;; yyy ;;; yy ;; yyy ;;;
OWNER'S MANUAL
WIRING DIAGRAM
Driver Low Frequency 330588-001 Driver High Frequency 331062-001
;;; ;;; ; ;;;
Blue Black Red Red/Black
331596-002 Network
Owner's Manual 331066-001 Survey Card 330033-001
2000.1 SCHEMATIC
L1 0.75 mH +IN C1 20.0 mfd 50V 13" RED 250 +LF
INPUT
L2 .80 mH
C2 20.0 mfd 100V R1 2.70 ohm 5W
�IN R2 4.70 ohm, 5W
13" RED/BLACK
C3 2.2 mfd 50V
205
�LF
BLUE 110 +HF
L3 0.25 mH BLACK
110
�HF
Infinity Systems, Inc. 250 Crossways Park Dr., Woodbury, New York 11797
9-98
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