Atlas Sound C12BT60 User Manual
• Factory-installed, 60W line-matching transformer to
match 70.7V or 100V lines (transformer may also
be easily bypassed for 8 ohm applications)
• Heavy duty cast basket for added strength in high
power applications
• Newly designed post mounted 1" tweeter section
with unique mounting plate that maximizes the
tweeters frequency response by reducing phase
cancellation
• Accurate midrange reproduction and overall voicing
is very pleasing for voice or music reproduction
• 90 degree dispersion at 2kHz
VALUE PRICED C12BT60
12" COAXIAL LOUDSPEAKER SYSTEM
Superior Sound Reproduction and
Power Handling Capacity With
Atlas Sound’s Model C12BT60
Complimenting the 2002 releases of the 8CXT60, 12CX
and 12CXT60 compression driver coaxial speakers Atlas
Sound is proud to introduce the C12BT60, a value
priced 12" coax which completes Atlas Sound's new family of products for high ceiling applications.
Atlas Sound Model C12BT60 is a professional quality
coaxial loudspeaker for use where full range music and
voice reproduction are desired. The C12BT60 is perfect
for high ceiling applications where tighter pattern control
and higher SPL is required.
Model C12BT60 combines a 12" diameter low frequency
reproducer and a 1" diameter high frequency, postmounted reproducer. The unit features a unique tweeter
mounting plate that maximizes the tweeters frequency
response by reducing phase cancellation from the
woofer cone. Ahighly efficient built-in passive crossover
network is included for determining proper frequency
selection between the two reproducers. Both the low frequency reproducer and the tweeter feature permanently
aligned voice coils (1.5" & 1" diameter, respectively) to
assure distortion free performance. Afactory installed 60
watt variable tap line transformer is included with the
package, however, the transformer can be easily
bypassed for 8 ohm applications.
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C12BT60
Rear View
C12BT60
Front View
1601 Jack McKay Blvd.
Ennis,TX 75119
www.AtlasSound.com
Tech Support 1.800.876.3333
Printed in the USA
Specifications are subject to change without notice.
©2003 Atlas Sound LP. Atlas Sound is a trademark of Atlas Sound LP. All rights reserved.
ATS001517 RevA 2/03
000203484063
SPECIFICATIONS
FULL RANGE COAXIAL LOUDSPEAKER
MODEL C12BT60
FREQUENCY RESPONSE (±10dB) 40Hz to 20kHz
FREQUENCY RESPONSE (±3dB) 68Hz to 15kHz
POWER HANDLING 100 Watts
SENSITIVITY 95dB
MAX. SPL @ 1METER 113dB
(Transformer Limited @ 60W)
NOMINAL IMPEDANCE 8 ohm
CROSSOVER FREQUENCY 2750 Hz
DISPERSION ANGLE 90 Degrees
LF TRANSDUCER
BASKET MATERIAL Cast Aluminum
CONE MATERIAL Treated Paper
SURROUND MATERIAL & DAMPENING Treated Accordian Cloth Edge
VOICE COIL DIAMETER 1.5" (38mm)
MAGNET WEIGHT 30 oz. (.85g)
HF TRANSDUCER
DIAPHRAGM MATERIAL Treated Laminated Silk
VOICE COIL DIAMETER 1" (25mm)
VOICE COIL FORMER MATERIAL Aluminum
VOICE COIL MATERIAL Copper
MAGNET WEIGHT 10 oz. (283g)
TOP PLATE THICKNESS 0.125 (3mm)
TRANSFORMER Frequency Response: 33Hz to 21kHz (±2dB)
Primary Taps @ 70.7V: 60,30,15,7.5
Maximum Insertion Loss 1dB
DIAMETER & DEPTH 12.875" (327mm) Dia. & 4.1875" (106mm) Deep
MOUNTING DIMENSIONS 11.625" (295mm) Bolt Circle
NET WEIGHT (Less Transformer) 10.5 lbs (4.76kg)
Recommended Enclosure For Maximum
Low Frequency Performance**** Atlas Sound Q4412 (2 Ft
3
, .054m3)
Q Series Enclosures
The C12BT60 will work well in even the smallest volume Q series
enclosure (Q4412 2 cubic feet) with a 3dB down point of 68Hz. If
required, bass response can be extended with larger volume enclosures. Atlas Sound’s model 95-12 round enclosure may also be used
with model 61-12W baffle.
Q418
* Rated power based on EIA specification ** Averaged from 500 Hz to 2.5 kHz
*** Dispersion angle = 6dB down point at 2 kHz
**** When used in full space anechoic with the Atlas Sound Q4412 two cu. ft. enclosure the C12BT60 operates within a frequency response range of 68 Hz - 20 kHz (±3dB).
Sensitivity is 95dB (1W/1M).
Dispersion angle is 90° @ 2kHz.
• Five Year Limited Warranty •
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