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Excellent manual, detailed, very useful! Exactly what I needed, I'd recommend it to all who need it. Although images are scanned easily readable and explicit. A valuable tool product at a price more than modest, take it with confidence and you will not regret it!
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Clear and complete service manual. Easy now to restore my old Kenwood KD-1500.
Thanks a lot.
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Thanks for this "hard to find" service manual. This Sony PS212A is a very good turntable that needed to be restored !
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Excellent quality on these manuals. Same as having the original printed manual and incredibly useful when doing a custom install like me. Keep it up on the good work.
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This is an excellent information source. Great quality and tons of info regarding technical service for the Technics SH8065.
Beta TwelveXdvc 12" Woofer � Technical Data
SEALED BANDPASS BOX VOLUME
Port
fo = 60 Hz length = 7.79"
NOTES
Beta TwelveXdvc
(side view) diam. = 4"
VREAR = 1.40 ft3 (39.65 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
VFRONT = 0.70 ft3 (19.82 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
SEALED BANDPASS FREQUENCY RESPONSE @ 2.83 V
105 dB In-Car 12 dB LP @ 80 Hz 100
95
Out-Of-Car
90
85
80
75
70
65 20 Frequency 50 100 Hz 200 500 1k
C
2k
SEALED BANDPASS EXCURSION/GROUP DELAY @ 200 W
20.0 Xd mM T mSec 40 17.5 30
15.0
20
12.5 Group Delay 10.0
10
0
7.5
-10
5.0
-20
2.5
Transducer Excursion
-30
0.0 -40
C
-40
Ininfity Technical Data . . 8�49
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