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This service manual for the Kenwood KT-990D was reproduced really well ,is very legible and manual is complete.Combined with the low price paid,in the future,I will be checking Owner-Manuals.com any time I need a manual.
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When I purchased this manual I had my doubts regarding the quality as the price was so reasonable as compared to other outlets.
The manual itself is of high standard the print is very clear as are the diagrams. Obviously with the diagrams one has to zoom in otherwise it is to small to be able to read.
Overall I am very pleased with the company who delivered as they said and with the manual they supplied.
I occasionally require a manual and now having registered with this company I shall order from them in the future.
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I was at first dubious about payiong for downloaded manuals but having done so, I was extremely impressed with quality of the two manual I ordered, well worth the small price I paid.
I would highly recommend these to my friends.
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reasonable price for the schematic - the service is perfect, all as expected and pointed by instructions - good scan of the original plans - thank you!
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Manual was just as described!!! I odered it and in less than a day was able to download it and the text was clear and pages were all complete just as the original manual was. Purcashed this for a friend and they were more than happy. Perfect all around!
GT1500 15" Woofer � Technical Data
SEALED BOX VOLUME VENTED BOX VOLUME
length = 10.86"
(2) Ports
fo = 30 Hz
GT1500
(side view)
GT1500
(side view)
VBOX = 2.50 ft3 (70.80 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
VBOX = 4.00 ft3 (113.28 liters)
(all sides lined with 1-inch fiberglass or fiberfill)
diameter = 4.0"
SEALED FREQUENCY RESPONSE @ 2.83 V
100 dB In-Car 12 dB LP @ 65 Hz 105 95 Out-Of-Car 100
VENTED FREQUENCY RESPONSE @ 2.83 V
dB In-Car 12 dB LP @ 80 Hz
90
95
Out-Of-Car
85
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 @ 200 W
20.0 Xd mM T mSec 20 17.5 15 17.5
VENTED EXCURSION/GROUP DELAY @ 250 W
20.0 Xd mM T mSec 20 15
15.0
10
15.0
10
12.5
Group Delay
5
12.5
Group Delay
5
10.0
0
10.0
0
7.5 Transducer Excursion 5.0
-5 -10
7.5 5.0 Transducer Excursion
-5 -10
2.5
-15
2.5
-15
0 20 Frequency 50 100 Hz 200 500 1k
C
-20
0 20 Frequency 50 100 Hz 200 500 1k
C
-20
2k
2k
JBL Technical Data . . . . . 7�27
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