Phoenix Gold SLD44 Owner'S Manual Download Page 2

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Power Connector:

Make connections using

the supplied detachable plug. Connect the (+)

terminal to battery positive, the (-) terminal to

chassis ground, and the (R) remote terminal

to a switched 12v source or remote wire. An

internal fuse protects against reverse polarity.

Power LED:

Lights when the unit is

operational.

Signal LED:

Lights when the SLD44 is

receiving a signal input.

RCA Inputs:

If the SLD44 is to be used as a

line driver for RCA (low level) inputs connect

your head unit’s outputs to the inputs. If you

run the front into input 1 and the rear into

input 2 you will maintain the ability to use your

fader control. If your headunit does not have

a front and rear output plug the single output

into input 1 of the SLD44 and you will be able

to conﬁgure both outputs to use this single

input. There is no need for a Y splitter to

connect to both inputs.

High Level Inputs:

These connections are

used when your headunit does not have RCA

(low level) outputs. Make connections to your

headunit’s speaker output terminals using the

supplied detachable plug. Be sure to observe

polarity!

RCA Outputs:

Connect to the ampliﬁer or

signal processor’s RCA inputs.

Install the SLD44 as close as possible to the

headunit. It is not necessary to ensure it is not

touching the vehicle body
1. First determine if you have RCA (low level)

outputs from your headunit. If you have an

aftermarket system you will probably have

these. If you are installing with a stock head

unit you probably will not have these.

2. Select a position for output conﬁg 1 switch

a. If you DO NOT have RCA (low level) outputs

and you wish to control the system using the
high (speaker level) inputs press output conﬁg
switch 1 to the out position.

b. If you do have RCA level outputs and want to

use half of the unit for high level and the other
half for your RCA level outputs push output
conﬁg 1 switch to the out position.

c. If you are using the SLD44 as a line driver and

are only using RCA level inputs push the output
conﬁg 1 switch to the in position.

3. Select a position for output conﬁg 2 switch

a. If you are using only one output use output 1

and leave output 2 unconnected. In this event
push output conﬁg 2 switch in.

b. If you are using high level inputs and want both

outputs to be driven by your high level inputs
push output conﬁg 2 switch to the out position.

c. If you’re using RCA level inputs and only have

one pair of RCA’s but want both outputs to be
driven from input 1 push the output conﬁg 2
switch to the out position.

d. If using two sets of RCA’s push the output

conﬁg switch to the in position.

4. Set all ampliﬁer and signal processor input

gains and output level controls to minimum

including the SLD44 itself.

5. Disconnect all channels connected to the

SLD44 except for the one channel you wish to

adjust. Only adjust one channel at a time. This

makes it obvious when a speciﬁc channel has

reached unwanted distortion levels.

6. Play a dynamic track and set your headunit to

of full volume.

Note: The next few steps depend on what

type of system you have.

If you are connecting straight from the SLD44 to

an ampliﬁer go to steps 7-10 labeled as

“To ampliﬁers only.”

If connecting from your SLD44 to a signal

processor please continue to steps 11-15

labeled as

“To signal processors and

then to ampliﬁer(s).”

To ampliﬁers only:

7. Slowly turn up the SLD44’s output gain control

until the speakers begin to distort slightly.

8. If the speakers have not reached maximum

undistorted output (which is very unlikely),

then and only then turn up the ampliﬁer’s gain

control until the speakers are driven to slight

distortion.

9. Reduce the SLD44’s output level or the

ampliﬁer’s gain control just enough to remove

the distortion. Repeat for additional channels.

If you had to turn up the gain control on the

ampliﬁer make sure that you reduce this level

ﬁrst before reducing that of the SLD44. The

lower the gain setting on your ampliﬁer, the

cleaner and more noise free your system will

be. If you’re driving the input of your ampliﬁer

properly, having your gains set low DOES NOT

decrease the amount of power wattage your

ampliﬁer will provide to the speakers! Your

ampliﬁer’s gain control is a level matching

control only and NOT a volume control!

10. Make sure that the complimentary left and

right channel gains are set to the same

position.

To signal processors and then to ampliﬁer(s):

11. Slowly turn the SLD44’s output gain control

until the maximum allowable input voltage

of the next processor in the signal path is

reached. You may ﬁnd this using an audible

test or you may need to use a sine wave

test CD and a true RMS Volt meter to set

this correctly. Listening for slight distortion is

usually quite accurate.

12. Adjust the input gains and output levels of

each signal processor between the SLD44

and the ampliﬁer to maintain equal input and

output levels (unity gain). Start with the ﬁrst

processor after the SLD44 and work your

way down the signal path to the ampliﬁers.

13. If the speakers have not reached maximum

undistorted output (which is very unlikely),

then and only then turn up the ampliﬁer’s

gain control until the speakers are driven to
slight distortion.

14. Reduce the last processor’s output level or

the ampliﬁer’s gain control just enough to

remove the distortion. Repeat for additional

channels. If you had to turn up the gain

control on the ampliﬁer make sure that you

reduce this level ﬁrst before reducing that of

the last processor. The lower the gain setting

on your ampliﬁer, the cleaner and more noise

free your system will be. If you’re driving

the input of your ampliﬁer properly, having

your gains set low DOES NOT decrease the

amount of power your ampliﬁer will provide

to the speakers! Your ampliﬁer’s gain control

is a level matching control only and NOT a

volume control!

15. Make sure that the complimentary left and

right channel gains are set to the same

position.

Frequency Response

(Hi and RCA Inputs)

10Hz to 40kHz (+/-0.5dB)

Hi Level Input THD+N

< 0.02% @ 1kHz 8V RMS output

Hi Level Input S/N Ratio (A Weighted)

106dB

RCA Input THD+N

< 0.002% @ 1kHz 8V RMS output

RCA Input S/N Ratio

(A Weighted)

110dB

High Level Input Impedance

100 Ohm

RCA Input Impedance

10k Ohm

Output Impedance

100 Ohm

Output Voltage

Up to 11V RMS

Dimensions

6.5” L x 3.9” W x 1.3” H

CONTROLS

INST

ALLA

TION AND TUNING

SPECIFICA

TIONS

+34

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Output Gain Control:

Adjusts signal gain from

0 to +34dB. Left and

right channels have

separate controls.

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Summary of Contents for SLD44

Page 1: ...is extended to two 2 years if installation is performed or approved by an authorized Phoenix Gold dealer proof of installation or approval required on purchase receipt This warranty is not transferabl...

Page 2: ...er go to steps 7 10 labeled as To ampli ers only If connecting from your SLD44 to a signal processor please continue to steps 11 15 labeled as To signal processors and then to ampli er s To ampli ers...

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Phoenix Gold SLD44, Owner'S Manual

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