Alesis AS4, Service Manual

Page: 5 / 29

SPE C I F I C AT I ON
F r o n t and R ear Panel F eatur es
1.Power /C lip L E D : T his L E D will be GR E E N under normal operating
conditions. T he L E D will flash R E D if your ProL inear is CL IPPING.
Clipping can be resolved by decreasing the INPUT L E V E L control knob
on the rear of the unit.
2.Pr ecision T uned B ass Por t : E nhances the bass response of the ProL inear.
3.Silk Dome T weeter
4.K evlar W oofer
5.I nput L evel C ontr ol K nob : Used to adjust the strength of the signal coming
into the speaker. T his allows all types of audio sources to be used, from
stand-alone CD players to professional mixers.
6.X L R /T R S A udio I nput : Female X L R and 1/4“ T R S blanced combination
input connector.
7.Power Switch: T urns the ProL inear ON or OFF.
8.I E C Power C onnector : Provides power from a 100-230V ,50-60Hz A /C
power source.
C onnecting and Star ting the Pr olinear
1.T urn the rear panel Input L evel control to the Minimum position.
2.Connect the power cable to the speaker.
3.Connect the audio source’ s output to the speaker with a T R S or X L R
connector.
4.T urn on the audio source.
5.T urn on the ProL inear.
6.With the audio source material playing, gradually turn up the Input
L evel control until the speaker is playing the audio material at a
comfortable level.
I nputs
Nominal input level: +4dB u (1.23 V rms)
Maximum input level: +20dB u (7.75 V rms)
Input impedance: 10k Ohms
Output
L ow Frequency (L F) power: 80 Watts R MS(130 Watts Peak)
High Frequency (HF) power: 40 Watts R MS(130 Watts Peak)
Pr oL inear 720
Max Peak SPL per pair: ~109 dB SPL (1m/M ax
input below clipping)
Frequency response: 50Hz-20kHz ±1.5dB
B ass level -3dB @ 43hz typical
Pr oL inear 820
Max Peak SPL per pair: ~111 dB SPL (1m/M ax
input below clipping)
Frequency response: 45Hz-20kHz ±1.5dB
B ass level -3dB @ 40hz typical
Power R equir ements
Input voltage: 100V AC-230V AC
Input frequency: 47-63Hz
Power consumption: 20Watts Idle(150Watts Peak)
E nvir onmental R equir ements
T emperature range: 0-40 degrees C
R elative humidity (non-condensing): 30-85%
C abling R equir ements
Source to Speaker: B alanced or unbalanced, shielded;
X L R or 1/4“ TR S connector
M echanical
Pr oL inear 720
Size(HxWxD) 5“ x9“ x12“
(380mm x 230mm x 305mm)
Weight: 25 lbs(11.4kg)
Pr oL inear 820
Size(HxWxD) 17.5“ x11“ x13.5“
(445mm x 280mm x 345mm)
Weight: 33 lbs(15kg)
Prolinear 720
Prolinear 820