JBL D38 User Manual
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D e c a d e tm
D 3 8 , D 3 1 5
S i m p l e S e t u p G u i d e
thank you for choosing JBL. For more than 50 years, JBL has been involved in every aspect of music and film recording and reproduction, from live performances to monitoring the recordings you play in your home, car or office.
We’re confident that the JBL loudspeakers you have chosen will provide every note of enjoyment that you expected – and that when you think about purchasing additional audio equipment for your home, car or office, you will once again choose JBL.
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JBL Consumer Products
one. Speaker Placement
D38
D315
two. Speaker Connections
Connection Tips
Speakers and electronics terminals have corresponding (+) and
(–) terminals. It is important to connect both speakers identically: (+) on the speaker to (+) on the amplifier and (–) on the speaker to (–) on the amplifier. Wiring “out of phase” results in thin sound, weak bass and a poor stereo image.
|
RIGHT |
|
LEFT |
– |
+ |
– |
+ |
– + |
– + |
Speaker Outputs
Troubleshooting
If there is no sound from any of the speakers, check the following:
•Receiver/amplifier is on and a source is playing.
•Review proper operation of your receiver/amplifier.
If there is no sound coming from one speaker, check the following:
•Check the “Balance” control on your receiver/amplifier.
•Check all wires and connections between receiver/ amplifier and speakers.
•Make sure all wires are connected. Make sure none of the speaker wires are frayed, cut or punctured.
If the system plays at low volumes but shuts off as volume is increased, check the following:
•Check all wires and connections between receiver/ amplifier and speakers.
•Make sure all wires are connected. Make sure none of the speaker wires are frayed, cut or punctured.
•If more than one pair of main speakers is being used, check the minimum impedance requirements of your receiver/amplifier.
If there is low bass output, check the following:
• Make sure the polarities (+ and –) of the left and right “Speaker Inputs” are connected properly.
Specifications
|
D38 |
D315 |
Frequency Response (–6dB): |
50Hz – 20kHz |
40Hz – 20kHz |
Recommended Maximum |
|
|
Amplifier Power*: |
175 watts |
250 watts |
Sensitivity @ 1 watt/1 meter: |
92dB |
96dB |
Nominal Impedance: |
8 ohms |
8 ohms |
Woofer: |
8" |
15" |
Midrange: |
4" |
4" |
Tweeter: |
2" |
2" |
Dimensions (H x W x D): |
16-3/4 x 10-3/4 x 12 inches |
30-7/8 x 16-1/4 x 11-1/2 inches |
|
(425 x 273 x 305mm) |
(784 x 413 x 292mm) |
Weight (each): |
17 lbs/7.7 kg |
35 lbs/15.9 kg |
*The maximum recommended amplifier power rating will ensure proper system headroom to allow for occasional peaks. We do not recommend sustained operation at these maximum power levels.
Occasional refinements may be made to existing products without notice, but will always meet or exceed original specifications unless otherwise stated.
JBL Consumer Products
250 Crossways Park Drive, Woodbury, NY 11797
8500 Balboa Boulevard, Northridge, CA 91329 1-800-336-4JBL (4525) (USA only) www.jbl.com
© 1998 JBL, Incorporated. JBL is a registered trademark of JBL, Incorporated.
9/98 
Part No.: D38,D315OM
A Harman International Company
Declaration of Conformity
We, JBL Europe A/S
Kongevejen 194B
DK-3460 Birkerød
DENMARK
declare in own responsibility, that the products described
in this owner’s manual are in compliance with technical
standards:
EN 50081-1:1992
EN 50082-1:1992
Steen Michaelsen
JBL Europe A/S
Birkerød. DENMARK. 9/98