Crunch DRA850.2 Specifications download pdf (Page 4)

AMPLIFIER FEATURE DESCRIPTIONS

V DRIVE AMPLIFIERS:

Each model is capable of 4 & 2-Ohms stereo per channel, or 4-Ohms mono bridged operation except All Crunch amplifiers feature a comprehensive diagnostic system, with speaker lead short circuit, and

amplifier DC faults indicated by the red “PROTECT” LED.

the mono amps which are capable of 4, 2 and 1-Ohm loads.

CAUTION: DO NOT OPERATE ANY AMPLIFIER BELOW THE INTENDED IMPEDANCE. YOU

The input sensitivities for rated output powers are variable from 0.2 volts to 6 volts.

WILL CAUSE DAMAGE TO THE AMPLIFIER THAT WILL NOT BE COVERED UNDER THE

All crossovers are fully variable in their respective ranges.

Crossover filters are 12dB/Octave.

WARRANTY PRINTED IN THE BACK OF THE MANUAL. 2 & 4 Channel amps are capable of 4

A POWER LED indicates the powered up and turned on condition

and 2-Ohms wired stereo and 4-Ohms wired mono bridged. The mono amps are capable of 4, 2

and 1-Ohm.

The 4 channel amps have the same features as the 2 channel models except that there are 2 sets of

controls.

1 set for channels 1 & 2 and 1 set for channels 3 & 4.

In addition, the 4 channel models have a MODE switch which allows for RCA signal routing and

selection.

The X-OVER slide switch selects the internal crossover functions:

-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting

simplifying daisy chaining of amplifiers.

-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.

-FULL: Bypasses all crossovers for full frequency range operation.

-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.

MODE: The mode switch allows you to choose routing of signal within the amp.

-2CH Mode: In this mode, only inputs 1&2 are used. Input 1 (left)is internally routed to speaker

terminals 1&3, while input 2 (right)is internally routed to speaker terminals 2&4.

This is useful when only a stereo source is available. CH1&2 can be set to high pass for highs, and

CH3&4 to low pass for lows, for instance, or set to full range, depending on the application.

-3CH mode: In this mode, input 1&2 signals are internally mono mixed, and routed as a mono signal

to 1&2 speaker terminals. These outputs can be mono bridged into one speaker. Set CH1&2 to low

pass. Input 3 is internally routed to speaker terminal 3, and input 4 is internally routed to speaker

terminal 4. Set CH3&4 to high pass.

-4CH Mode: In this mode, each input is internally routed to the corresponding speaker terminals,

with input 1 to speaker terminal 1 etc.

HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the

HIGH level (wire) inputs.

LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.

LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy

chain multiple amplifiers from one signal.

Note that the LOW PASS signal is MONO.

-In the LPF position, the HIGH PASS filter acts as a subsonic

filter.

-When the LPF mode is selected a 0 to +12dB, at 45Hz,

BASS EQ is also switched in.

DRA1050.4 / DRA1450.4 / DRA2450.4 / DRA4050.4

4-CHANNEL AMPLIFIERS

FLASH

NO FLASH

MODE

X-OVER X-OVER

2CH 3CH 4CH

FULL

HPF

LPF

CH3

CH4

CH1

CH2

INPUT

OUTPUT

INPUT

HPF

LPF

FULL

GND

CH1

GND

CH2 CH3 CH4

HIGH INPUT

BASS EQ

0dB

12dB

6V 0.2V

30Hz

250Hz

LPF

60Hz

1.2kHz

HPF LEVEL

CHANNEL 1/2

LEVEL

BASS EQ

0dB

12dB

HPF LPF

CHANNEL 3/4

60Hz

1.2kHz

30Hz

250Hz

The X-OVER slide switch selects the internal crossover functions:

-The input signal is routed directly to the LINE OUT RCA jacks, regardless of the X-OVER setting

simplifying daisy chaining of amplifiers.

-HPF: Selects the built in HIGH PASS filter, variable from 60 Hz to 1.2kHz.

-FULL: Bypasses all crossovers for full frequency range operation.

-LPF: Selects the built in LOW PASS , variable from 30 Hz to 250Hz.

MODE: The mode switch allows you to choose Stereo for full range 2 channel operation or MONO

for bridging operation

HIGH INPUT: If your radio/CD player does not have unbalanced (RCA) outputs, you can use the

HIGH level (wire) inputs.

LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.

LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy

chain multiple amplifiers from one signal.

Note that the LOW PASS signal is MONO.

-In the LPF position, the HIGH PASS filter acts as a subsonic

filter.

-When the LPF mode is selected, a 0 to +12dB, at 45Hz, BASS

-EQ is also switched in.

DRA850.2 / DRA1150.2 / DRA4050.2

2-CHANNEL AMPLIFIERS

FULL

LPF

MODEX-OVER

BASS EQ

0dB

12dB

HPF LPF

HPF

60Hz

1.2kHz

30Hz

250Hz

STEREO

MONO

LINE OUT

LINE INPUT

FLASH

NO FLASH

GND

HI INPUT

LEVEL

6V 0.2V

-SUBSONIC: Allows you to adjust the crossover filter from 15Hz to 35Hz.

-LPF: Allows yo to adjust the LOW PASS crossover filter from 30Hz to 250Hz.

LEVEL: Adjusts the input sensitivity from 0.2 volts to 6 volts.

BASS EQ: The Bass EQ is adjustable from 0db to 10dB.

REMOTE: This is the input jack for the remote Level control.

LINE INPUT: The line input accepts unbalanced (RCA) inputs from 0.2V to 6V.

LINE OUTPUT: The line output passes through signal from the line inputs which allows you to daisy

chain multiple amplifiers from one signal.

The mono amps are capable of 4, 2 & 1-Ohm loads.

Operating the amp below 1-Ohm can cause damage to the

amp not covered in the warranty.

DRA1850.1D / DRA2550.1D / DRA3250.1D

1-CHANNEL D CLASS MONO BLOCK AMPLIFIERS

FLASH

NO FLASH

30Hz 250Hz

LOW

PASS

OUTPUT

INPUT

LEVEL

BASS

0dB6V 0.2V

10dB

CONTROL

REMOTE

15Hz

35Hz

SUB

SONIC

1 2 3 4 5 6 7 8 9 ... 14 15

Comments to this Manuals

No comments

Crunch DRA850.2 Specifications Page 4

Comments to this Manuals

Related products and manuals for Audio amplifiers Crunch DRA850.2