A8 250.4D, A8 1750.1D, A8 2000.5
4 CHANNEL FULL RANGE CLASS D AMPLIFIER
Due to continuous improvement of the product the Specifications are subject to change without notice.
A8 250.4D
The “A8 Series” amplifiers include built-in variable crossovers. The crossover features
a variable frequency selection for precise 24dB per octave low pass filtering for all mono
amplifiers. The A8 250.4D offers an independent 12dB per octave High Pass and Low
Pass X-Over on channels 1&2 and a Selectable 12dB or 24dB per octave X-over on
channels 3&4. The A8 2000.5 offer a 12dB per octave slope for Channels 1-4 and a
24dB per octave slope for subwoofer channel.
Bass Boost
For added low frequency performance the amplifiers are equipped with a variable 0dB-18dB
bass boost @ 45Hz
Low Impedance Stability
A8 250.4D - 2 Ohm Stereo (4 Channel)
A8 1750.1D - 1 Ohm Mono
A8 2000.5 - 2 Ohm Stereo ( 5 Channel)
4 CHANNEL FULL RANGE CLASS D AMPLIFIER
A8 250.4D
4 CHANNEL
A8 250.4D
A8 250.4D / A8 2000.5
A8 250.4D
A8 2000.5
A8 Series
1 Ohm Subwoofer
A8 250.4D A8 2000.5
The A8 250.4D ampli er is equipped with a variable crossover network that allows you to select the
crossover mode (Highpass—Full Range) and desired crossover point for channels 1 and 2. Channels 3
and 4 allow you to select between a Highpass 12db slope, a 12db Stereo Lowpass / Bandpass slope and a
mono 24db Lowpass / Bandpass slope.
For example if you wish to drive a pair of subwoofers on channe
select the LP/BP mono switch setting on the ampli
er to lter out the high frequencies with a 24db
slope. You will then need to adjust the Lowpass control to the desired frequency setting (make sure to
have the Highpass control set to 15Hz so that the Bandpass
low frequencies to your subwoofers. If you wish to use the Bandpass crossover
over switch to LP/BP stereo. Once the LP/BP stereo switch setting is selected you will use both the
Lowpass and Highpass controls to
desired Bandpass
Highpass
lter. (The Bandpass crossover is available on only channels 3 and 4) To use the
lter select the x-over switch to the HP setting, this will
lter out the unwanted low and high frequencies to create the
frequencies with a 12db slope.
Channel 1 & 2
Highpass Control
Channel 3 & 4
Lowpass Control
Channel 3 & 4
Highpass Control
ls 3 and 4 in the bridged mode, you can
lter does not engage)This will only send
lter you must set the x-
lter out any unwanted low
The A8 2000.5 ampli er is equipped with a built-in variable crossover networks allowing you to select
the crossover mode and desired crossover point for each the front, rear and subwoofer channels.
Channels 1and 2 allow you to select either the Highpass crossover which
frequencies from reaching your speakers or Selecting the full setting turns o
function for channels 1 and 2.
Channels 3 and 4 allow you to select either the Highpass crossover which
frequencies from reaching your speakers or Selecting the full setting turns o
lters out any unwanted low
any crossover lte
r
lters out any unwanted low
any crossover lter
function for channels 3 and 4.
Channel 5 has a variable Lowpass
lter that lters out any unwanted high frequencies from reaching
your subwoofers. The bass boost feature allows you do boost the low end at 45Hz.
Channel 5 Lowpass Control
Channel 3 & 4
24db/Oct Lowpass/Bandpass
Mono output
Channel 3 & 4
12db/Oct Lowpass/Bandpass
Stereo output
Channel 3 & 4 Bandpass Control
when function is activated
A8 1750.1
The A8 1750.1D is equipped with a state of the art 24db per octave Lowpass crossover network. A
be required.
Bass EQ
Sub Sonic Filter
Lowpass Filter
Channel 1 & 2
Highpass Control
Channel 3 & 4
Highpass Control
Peak @ 14.4V :
2 ohms
4 ohms
Rated @
Frequency Resp.
N Ra
o (A-weight)
S/
THD with 80k filter
Low Input Level
Ch 1 & 2 High Pass Filter
Ch 3 & 4 High Pass Filter
A8 250.4D
4 x 250 W
4 x 150 W
4 x 125 W
20Hz - 28KHz
>95dB
<0.5%
285mV - 6V
50Hz - 3KHz
10Hz - 500Hz
Low Pass Filter 50Hz - 3KHz
Bass EQ
Bass Remote Capability
Input Voltage
0dB -
18dB @ 45Hz
Yes (Remote Included)
11.2V - 14.4V
A8 2000.5D
4 x 250 W
4 x 125 W / 1 x 600 W @ 2 Ohm
4 x 110 W / 1 x 485 W @ 2 Ohm
20Hz - 28KHz
>95dB
<0.5%
285mV - 6V
10Hz - 150Hz
10Hz - 150Hz
50Hz - 3KHz
0dB -
18dB @ 45Hz
Yes (Oponal)
11.2V - 14.4V
Peak @ 14.4V :
1ohm
2ohm
Rated @
Frequency Resp.
o (A-weight)
S/N Ra
THD with 80k filter
Low Input Level
Crossover Freq.
Bass EQ
Bass Remote Capability
Input Voltage
Dimensions
A8 250.4D
A8 1750.1D
A8 2000.5
A8 1750.1D
1 x 750W
1 x 400 W
1 x 600 W @ 1 Ohm
20Hz - 220Hz
>95dB
<0.5%
285mV - 6V
40Hz - 150Hz
0dB - 18dB @ 45Hz
Yes (Remote Included)
11.2V - 14.4V
Length
7.32in/186mm
7.32in/186mm
10.55in/268mm
Height
1.88in/47mm
1.88in/47mm
1.88in/47mm
Width
6.22in/158mm
6.22in/158mm
6.22in/158mm
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