Specifications
LT Series Power Amplifiers
stereo power 8
Ω
4
Ω
2
Ω
bridged mono power 8
Ω
4
Ω
maximum output voltage
frequency response 1W @ 8
Ω
power bw rated power @ 4
Ω
, 1% THD+N
THD + N
smpte imd
damping factor
input CMRR
input sensitivity @ 8
Ω
input impedance
hum and noise
crosstalk
class
power supply
circuit breaker rating (120V/230V)
current draw (120VAC) 1/8 power4
Ω
1/3 power, 4
Ω
at idle
thermal emissions 1/3 Power, 4
Ω
btu / hr
cooling
input connectors
output connectors
controls
LED indicators
construction
dimensions
weight
LT1000 LT1500
LT2000
280W 400W 560W
500W 750W 1000W
650W 900W 1200W
1000W 1500W 2000W
1300W 1800W 2400W
53V rms
64V rms
72V rms
1kHz, 0.1% THD+N Power figures are watts per channel, both channels driven.
20Hz–20kHz, +0 / -1dB
20Hz–20kHz, +0 / -1dB
<0.1% rated power @ 4
Ω
, 1kHz
<0.03% rated power @ 8
Ω
400:1 @ 8
Ω
>60dB @ 1kHz
.775 V for full rated output power
>20k
Ω
balanced, >10k
Ω
unbalanced
-100dB, A-weighted
> -60dB below max rated power (1kHz)
D
Linear with toroid transformer
10A / 6A
15A / 10A
20A / 12A
1.8A 2.4A 3.0A
4.0A 5.5A 7.0A
0.6A 0.6A 0.6A
1220 1430 2100
Back to front via variable speed DC fan
balanced female XLR, 1/4"TRS, and three pin Phoenix™
Speakon™ connectors and five-way binding posts
front panel: twin recessed stepped attenuators, power switch
rear panel: signal ground-lift, mode select, circuit breaker
signal level, protect, active, ACL / IGM
16-gauge steel chassis, 14-gauge steel front-panel (double thickness in rack ear areas)
3.5" x 19" (front panel) 17" (chassis) x 14” (15.25" to rack ears) h x w x d
30 lbs
32.5 lbs
35 lbs
Crest Audio Inc.
16-00 Pollitt Dr. Fair Lawn NJ 07410 USA
TEL: 201.909.8700 FAX: 201.909.8744
www.crestaudio.com
*A4400078*
Crest Audio reserves the right to make improvements in manufacturing or design which may affect specifications.
3.21.02
v.1.6
Architects’ & Engineers’ Specifications:
The power amplifier shall consist of 2 chan-
nels. Each channel will deliver a minimum of
(280 / 400 / 560) watts at 8 ohms, (500 / 750 /
1000) watts at 4 ohms (650 / 900 / 1200) watts
at 2 ohms, 20Hz - 20kHz. In Bridged mono
mode, it will deliver a minimum of (1000 / 1500
/ 2000) watts at 8 ohms and (1300 / 1800 /
2400) watts at 4 ohms, 20 HZ - 20 kHz. It shall
weigh (30 / 32.5 / 35) lbs. The amplifier shall
incorporate protection circuitry against output
short circuits, DC voltage on outputs, thermal
overload and load protection due to any form
of amp failure. It will include impedance sens-
ing circuitry, and RMS clip limiter and Auto-
Ramp signal control. The amplifier shall have
a sensitivity of .775V at the input, which will
deliver full rated output power in any output
configuration.
Sensitivity can be changed
internally to 1.2V for full rated output power.
The hum and noise level shall be greater then
100dB below rated output, "A" weighted. The
amplifier shall have a class D output stage with
a modulated power supply.
The frequency
response shall be greater than 20 Hz - 20 kHz,
0 / -1 dB, at full rated output power @ 4 ohms,
.5%THD. The amplifier will operate at either
120 VAC, 60hz (safe operating range 100-
132VAC) or at 230 VAC, 50Hz (safe operating
range 200-264), voltage selection determined
at factory.
Maximum current draw at 120V
shall be no greater then 15 A, both channels
driver continuously into 4 ohm load.
Front
panel indicators shall include LED indicators
for Protect, ACL (automatic clip limit), Signal
level, and Active status. Front panel attenua-
tors will be recessed and detented. Input con-
nectors shall be XLR, 1/4" TRS and 3-pin
Phoenix, per channel. Output connectors shall
be 5-way binding posts and Speakon, per
channel.
A switch shall enable the signal
ground to be lifted from the chassis. The pack-
aging of the amplifier shall allow for standard
rack mounting without requiring space
between similar units as long as rack is prop-
erly ventilated. Dimensions main chassis shall
be 17" wide (front panel is 19" wide), 14" deep
(15.25" including rear rack ears), 3.5" high.
The amplifier shall be designated the Crest
Audio Model (LT1000 / LT1500 / LT 2000).
