ACE 1250 Manuals



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Key Features
s Advanced Composilite™ Carbon Fiber
Enclosure — reduces passive enclosure losses
ACE 1250
(resulting in greater sonic accuracy), offers
reduced weight, and is highly weather resistant. 
s 12-inch, 2-Way System —in a lightweight, multi-
purpose enclosure; fully equipped with certified
rigging hardware for improved safety margins
plus reduced shipping and handling costs.
s Spherical Waveguide —mated with 1.5" exit
neodymium compression driver, delivers true
constant-directivity performance, 75° nominal
coverage pattern, and reduced throat distortion.
s Versatile Shape —works as a floor wedge,
side fill, or in small front-of-house clusters.
s High Power Handling — a 4-inch LF voice coil
and 4-inch HF voice coil handle 600W continuous
AES power. With 96 dB efficiency, peak SPL
can reach 130 dB. 
s QSC DSP Downloads — for QSC-powered
systems using the DSP-3 programmable
processor, a growing selection of custom
tailored downloads offer virtually perfect
“dialed-in” performance right out of the box.
The QSC-ACE 1250 Composite Loudspeaker is a
full range speaker system that delivers exceptional
sound quality and high SPL in a lightweight, all-
weather carbon fiber enclosure. It makes an
excellent choice for front of house arrays, delay 
or downfill clusters, high-level dance systems,
Specifications
1250 WR
1250 AWR
and low profile stage monitoring systems.
Configuration
Two way, ported enclosure
Two way, ported enclosure
The two-way, ported enclosure comprises a
High Frequency Transducer
1.5" exit Neodymium compression
1.5" exit Neodymium compression
1.5" exit neodymium compression driver coupled
driver on conical waveguide
driver on conical waveguide
with a high frequency spherical waveguide that
Low Frequency Transducer
12" (309 mm)
12" (309 mm)
has true constant directivity performance. This
Crossover Configuration
Passive or Bi-amplified (switchable)
Bi-amplified
spherical waveguide minimizes throat loading and
Crossover Frequency
1100 Hz
1100 Hz
distortion issues commonly associated with
Frequency Response (Hz)
conventional high frequency horns. A powerful 12"
± 3  dB
60 Hz–18 kHz
60 Hz–18 kHz
LF transducer handles 600 watts of continuous
-10 dB
40 Hz–22 kHz
40 Hz–22 kHz
power and provides smooth response through the
Sensitivity (2.83V @ 1 meter)
crossover point. With a 75° nominal coverage
Full Range (20 Hz–20 kHz)
96 dB

Biamped LF

96 dB
pattern, multiple units can be splayed together to
Biamped HF

112 dB
meet expanded coverage and SPL requirements.
Nominal Impedance
The QSC-ACE 1250 WR employs a passive
Full Range
8 ohms

crossover that can be bypassed for bi-amplified
Biamped LF

8 ohms
use. The QSC-ACE 1250 AWR is designed for bi-
Biamped HF

8 ohms
amplification only and requires an external crossover.
Power Handling (EIA RS-426A)
Full Range 
600W

QSC-ACE enclosures incorporate Composilite™,
Biamped LF 
600W
600W
a patented core composite technology that yields
Biamped HF 
75W
75W
superior acoustic properties, lighter weight, and
Calculated Maximum Output
130 dB
130/137 dB
outstanding weather resistance compared to
(dB SPL @ 1m)
conventional enclosure materials. Multiple skins
Nominal Coverage (-6 dB)
75°
75°
of carbon fiber are layered over a phenolic honeycomb
core to form a rigid, seamless enclosure. The
Enclosure
extreme stiffness of composite construction prevents
Cabinet Shape
Irregular Pentagon
Irregular Pentagon
flexing of the enclosure walls, significantly
Enclosure Materials
Composilite™ Composite Core 
Composilite™ Composite Core 
reducing transmission loss due to wall vibration. The
with Carbon Fiber
with Carbon Fiber
result is reduced cabinet resonance, increased
Finish
Epoxy Resin
Epoxy Resin
low-frequency output, and greater sonic accuracy.
Weather Resistance
Yes
Yes
Furthermore, the enclosure’s light weight
Grill
Wood frame w/grill cloth
Wood frame w/grill cloth
translates to safer rigging and reduced handling
Connectors
4 x Neutrik NL4 Speakons
4 x Neutrik NL4 Speakons
costs. Installation accessories and array kits are
readily available.
Suspension Hardware
1200 Series Accessories, Aeroquip, 
1200 Series Accessories, Aeroquip, 
or Forged Closed Loop Eyebolts
or Forged Closed Loop Eyebolts
Dimensions and Weight
Height
29.5" (74.9 cm)
29.5" (74.9 cm)
Width (Front)
19.5" (49.5 cm)
19.5" (49.5 cm)
Depth
12.6" (32.0 cm)
12.6" (32.0 cm)
Trapezoid Angle
45 deg. Prism
45 deg. Prism
Net Weight
49 lb. (22.2 kg)
47 lb. (21.3 kg)
Hear the Power of Technology.
Shipping Weight
61 lb. (27.5 kg)
59 lb. (26.6 kg)


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