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Je suis audiophile belge, électronicien et créateur d'enceintes acoustiques.
J'ai apprécié la qualité des documents fournis. Ils sont très lisibles, ils peuvent être agrandis sans problème et ils sont complets. Pour moi, c'est parfait. Pour cette qualité, je suis d'accord de payer. Et le système de paiement et d'envoi est simple. Merci, continuez comme cela.
Frédéric
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The cover page was a little scary, very dark but readable. The remainder of the document was better copy and easily readable. Why would I give 5 Stars? (1) PRICE, (2) AUTHENTICITY, It was the real deal, filled with service information, including the specific information I required. (3) PRIVACY, I didn't start to get slammed with spam. (4) EASY TRANSACTION. Painless. (5) COMPLETE, I have found several manuals here, that I could find nowhere else. (6) I will be a repeat customer!
;
Well done!!! I found what I need to have, indeed!
Furthermore, due to my hobby is repairing vintage equipments, I added this web site in my desk toolbar because I have in mind to search further service manuals. Thanks a lot www.owner-manuals.com !
Regards, Maurizio
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Again very good service manual, this time very fast download. AAAAA+
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Ckear manual, well reproduced with plenty of overlap on critical pages.
Beta TwelveX 12" Woofer � Technical Data
SEALED BOX VOLUME VENTED BOX VOLUME
length = 9.54"
Port
fo = 33 Hz
Beta TwelveX
(side view)
Beta TwelveX
(side view)
VBOX = 1.20 ft3 (33.98 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
VBOX = 2.00 ft3 (56.64 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
diameter = 4"
SEALED FREQUENCY RESPONSE @ 2.83 V
100 dB In-Car 12 dB LP @ 70 Hz 105 95 100
VENTED FREQUENCY RESPONSE @ 2.83 V
dB In-Car 12 dB LP @ 70 Hz
90 Out-Of-Car 85
95 Out-Of-Car 90
80
85
75
80
70
75
65
70
60 20 Frequency 50 100 Hz 200 500 1k
C
65 20 Frequency 50 100 Hz 200 500 1k
C
2k
2k
SEALED EXCURSION/GROUP DELAY @ 300 W
20.0 Xd mM T mSec 10.0 40 17.5 7.5 35
VENTED EXCURSION/GROUP DELAY @ 375 W
Xd mM T mSec 40 30
15.0 Group Delay 12.5
5.0
30
20
2.5
25 Group Delay
10
10.0
0.0
20
0
7.5
-2.5
15
-10
5.0 Transducer Excursion 2.5
-5.0
10
-20
-7.5
5
Transducer Excursion
C
-30
0.0 20 Frequency 50 100 Hz 200 500 1k
-10.0 2k
C
0 20 Frequency 50 100 Hz 200 500 1k
-40
2k
Ininfity Technical Data . . 8�45
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