"...I rank the quality, if not the magnitude, of this small California company's achievement up there with Dolby noise reduction and the Compact Disc."
-David L. Clark Audio, Nov. 1990
on Velodyne's servo-controlled subwoofer systems.
"The servo-feedback subwoofers, in our experience, produce the purest low frequency sounds of all the designs."
-John E. Johnson, Jr., Ph.D.
Secrets of Home Theater and High Fidelity, Jan. 1995 on Velodyne's servo-controlled
subwoofer systems.
"... it's safe to say that when it comes to woofin' done right, Velodyne's bigger models are probably the safest bet there is."
"If you know subwoofers, you know about Velodyne."
-Corey Greenberg
Home Theater Technology, Feb. 1995 Face Off: Comparison of five subwoofers
Velodyne Acoustics, Inc.
1070 Commercial St. Suite #101
San Jose, CA 95112
408.436.7270 voice 408.436.7276 fax
Models DF-12sc & DF-10sc
OWNER'S MANUAL
12" & 10" Distortion Free (DF) Series
Automotive Servo-Controlled Subwoofers
Superior Design For Superior Sound
AUTOMOTIVE 
DISTORTION-FREE
SUBWOOFER
Printed on recycled paper. |
For installation & connections, see the sup- |
Velodyne, DF-12sc & DF-10sc are trademarks of Velodyne Acoustics, Inc. |
plied installation / connections manual. |
|
|
FOR YOUR RECORDS. . .
DATE PURCHASED _____________________________________
MODEL PURCHASED ___________________________________
DEALER ______________________________________________
INSTALLED BY _________________________________________
SERIAL # _____________________________________________
WARNING!
Do not power up system before consulting manual.
Incorrect installation could result in damage to unit that will not be covered under warranty. Please follow these easy steps before using/installing unit.
Please read all instructions first.
Due to the sophisticated nature of this equipment, we highly recommend having an authorized Velodyne dealer perform all installation & setup functions.
Double check all connections to unit before applying power.
Servo control unit must have basic functions set to your installation type before applying power.
Final calibration should be set by installer after initial power up.
Installation manual MUST be followed precisely during installation process to ensure proper performance and prevent damage to speaker or control unit.
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|
SPECIFICATIONS |
|
DF-12sc |
DF-10sc |
THD |
|
<1% |
<1% |
(comparable non- |
|
10-25%+10-25%+ |
|
THD servo subwoofers) |
|
|
|
frequency response |
|
13-105hz |
15-105hz |
sensitivity |
(1w/1m) |
90 dB |
87 dB |
excursion capability |
(linear) |
3/4 in. |
3/4 in. |
|
(max.) |
1-1/4 in. |
1-1/4 in. |
voice coil diameter |
|
2-1/2 in. |
2-1/2 in. |
magnet weight |
|
54 oz. |
54 oz. |
nominal impedance |
|
4 ohms |
4 ohms |
recommended amp power |
|
100 w/min. |
100 w/min. |
|
|
300 w/max. |
300 w/max. |
recommended enclosure size * |
1.7 cu. ft. |
1.0 cu. ft. |
|
(sealed) |
|
|
|
* Recommended enclosures :
This product has been designed to perform in any type of enclosure, or in an infinite baffle setup. Performance of the subwoofer system may be tailored to your listening taste by altering the type of enclosure used. Consult installation manual for further details. Power requirements are typically reduced when used in an infinite baffle configuration.
Specifications are subject to change without notice.
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