Audiofrog A600.1D Manuel - Page 3

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Turn-On Mode

Signal

Offset Rem

Controls and Functions (A600.1D):

The Turn-On Mode and Level control

for the A600.1D operate exactly like the

controls on the A150.4D. The Power and

Protect LED functions are also the same

as the 150.4D. Because the A600.1D is a

single channel amplifier designed to drive

low frequency speakers or subwoofers, the

crossover controls are somewhat different

and are explained below.

High Pass 5Hz-40Hz: Adjusts the high pass

filter frequency to any frequency between

5Hz and 40Hz. Low frequencies below this

selection will be removed. For subwoofers

in vented boxes, set this control about a

half an octave below the frequency at

which the enclosure is tuned to prevent

too much excursion from damaging the

speaker. This is also useful for infinite baffle

subwoofers. If your system doesn't require

a high pass filter for the subwoofer, set this

control to its minimum setting (5Hz).

Low Pass 50Hz-500Hz: Adjusts the low pass

filter frequency to any frequency between

50Hz and 500Hz. High frequencies above

this selection will be removed.

Phase 0°-180°: Adjusts the phase of the

output at the crossover frequency be-

tween 0 degrees and 180 degrees. Use

this control to match the phase of the

subwoofer with that of the front speakers

to help blend the sound of the subwoofer

into the sound of the front speakers.

45Hz 0dB-15dB: Adjusts the amount of

45Hz in the output between 0dB and

15dB. Adjust this as you wish but be careful

because too much bass boost can cause

distortion at high output when the am-

plifier runs out of available power at high

volume. Each 3dB of boost requires double

the power of the unboosted frequencies.

3dB requires twice the power. 6dB requires

four times the power. 9dB requires eight

times the power. 12dB requires sixteen

times the power and 15dB requires 32

times the power sent to the unboosted

frequencies.

Remote Level Control (optional): This

control, if installed, allows the level of the

output of this amplifier to be controlled

from the front of the car. The RLC will vary

the output level of the amplifier between

off (fully counter-clockwise) and the level

control setting selected with the level con-

trol on the amplifier (above).

Using These Amplifiers With a DSP: When

using these amplifiers with a DSP, you

can (and should) defeat the A150.4D's

on-board crossovers by selecting "None"

with the Filter Type switch if the filter will be

implemented in the DSP. When using the

A600.1D with a DSP, adjust the Low Pass

filter to its highest frequency (500Hz) and

the High Pass filter to its lowest frequency

(5Hz) if you will implement the high pass

filter in the DSP. You can also use the high

pass filter in the amplifier to protect your

subwoofer from over excursion if your DSP

doesn't include a high pass filter for the

subwoofer.

When Driving Tweeters Separately in an

Active System: Set the high pass filter

frequency about an octave above the

tweeter's free air resonance (Fs). An oc-

tave is a doubling or halving of frequency.

So, if your tweeter's Fs is 1.5kHz, set the

crossover at 3kHz.

Use a protection device to save your

tweeters in case of a mishap. A capacitor

and a resistor work well. Choose the value

of the capacitor to provide a -3dB point

about an octave below your crossover.

The values below are suitable for all Au-

diofrog tweeters.

50uF

Tweeter +