Soundstream Technologies Stereo Amplifier REFERENCE 405 User Manual

REFERENCE  
405  
Power Amplifier  
OWNERS MANUAL  
AND  
INSTALLATION GUIDE  
T
C
N
0
L
0
G
E
 
between the circuit board and the  
to ensure cool, efficient amplifier operation.  
in a design called  
CONGRATULATIONS  
You now own the REFERENCE405 Amplifier, the product of an  
uncompromising design and engineering philosophy. Your Soundstream  
REFERENCE amplifier will outperform any other amplifier in the world.  
Staggered Asymmetrical Electronic Crossover Continuously variable  
crossover with 24 low pass and 12 high pass.  
To maximize the performance of your system, we recommend that you  
thoroughly acquaint yourself with its capabilities and features. Please retain  
this manual and your sales and installation receipts for future reference.  
Power Supply Design All power supply components are  
located near one another, connected by thick, wide PCB traces, which  
ensures rapid high current delivery. The entire power supply section is  
isolated on one side of the circuit board while the audio stage is located on  
the other, guaranteeing minimal noise.  
Soundstream amplifiers are the result of American craftsmanship and the  
highest quality control standards, and when properly installed, should provide  
you with many years of listening pleasure. Should your amplifier ever need  
service or replacement due to theft, please record the following information,  
which will help protect your investment.  
Ultra-Low ESR Capacitance Bank Multiple small input power capacitors  
are used to provide a lower ESR (Equivalent Series Resistance), which  
means the capacitors are able to provide more current, faster.  
Model and Serial  
Dealer’s Name  
Smart Thermal Rollback Power Supply Most amplifiers shut off when  
they get too hot. In the unlikely event the REFERENCE405 reaches  
it will roll back average power output capability (without affecting the  
dynamics) until the amp cools off, when full capability is restored. If  
overheating should continue, a second thermal sensing protection circuit  
Date of Purchase  
Installation Shop  
Installation Date  
will shut off the amplifier if the  
reaches  
Unregulated Power Supply 4 ohm power ratings are measured at 12  
volts, which means substantially greater output in the real world when the  
vehicle is running, where voltages range from 13.2 to 14.4 volts. Dynamic  
capability of the loosely regulated power supply is much greater than that  
of a tightly regulated power supply.  
CAUTION!  
Prolonged listening at high levels may result in hearing loss.  
new Soundstream REFERENCE amplifier sounds better than anything you’ve  
ever heard, exercise caution to prevent hearing damage.  
Even though your  
Fault Monitor LED on the front panel notifies you of blown power supply  
fuses.  
DESIGN FEATURES  
112 Ohm Drive Ability The REFERENCE405 subwoofer channel is  
Uncompromising Design and Construction including mil-spec glass  
epoxy circuit boards and high current custom gold-plated solid brass  
connections that will accept up to 4 gauge power/ground wire.  
designed to drive nearly any load--all the way down to a  
Ohm load!  
Five Dual Discrete Class A Drive Stages Over six times the drive  
current of most amps, which maintains performance into low impedance  
loads.  
High Power/High Current Capability (Subwoofer channel)  
Soundstream’s exclusive circuit which permits customization of your  
amplifier to its particular application--high current, low impedance loads  
(multiple subwoofer, 1 ohm or less) or high power, higher impedance loads  
(greater than ohm).  
Muted Turn-on/off Circuit A unique circuit which  
Drive Delay  
completely eliminates any amplifier-related turn-on/off noises.  
Flexible Input Sensitivity accepts input voltages from 100  
which permits maximum output from amplifier with virtually any source unit.  
to 2.5 V,  
Darlington Power Array Soundstream’s “over-building” of  
the output section incorporates several output transistors instead of a few  
to deliver more power, faster. The transistors are directly sandwiched  
Balanced Input Design for added immunity to noise caused by component  
and vehicle electrical system interaction.  
 
SYSTEM  
2
Channels of input: 4  
Channels: none  
Channels of input: 2  
Bridged Channels: none  
Channel Impedance: 2 ohms  
Channel Impedance: 4 ohms  
Current Setting: High Power  
High  
Current  
High  
High  
C
N
0
0
I
E
8
REFERENCE 405  
Connections  
REFERENCE 405  
I
\
24  
HGH  
HGH  
CH  
HGH  
FUSES  
FUSES  
24  
 
SYSTEM  
3
M
4
Channels of input:  
Channels of input: 2  
Channels: 1  
Channels: none  
Subwofer Channel Impedance: 2 ohms  
High  
4
Subwofer Channel Impedance: 1 ohm  
High Current Setting: High Current  
Current Setting: High  
outboard “dual amp  
to remotely  
adjust  
level.  
c N 0  
L 0  
I
s
0 I s  
Front  
REFERENCE 405  
REFERENCE 405  
TO+  
WELLES  
12  
+
24  
24  
HEAD  
I
Settings  
FUSES  
4
 
5
The mono channel can be set to operate either full range or low pass. To  
use the low pass crossover, select low pass; to operate the channel up to  
400 Hz (for use with an external crossover), select bypass.  
INSTALLATION  
1. PLAN THE INSTALLATION  
Before you go any further with the installation of the amplifier, map out the system  
and the necessary wiring. Your work will be simplified if you have a plan of  
attack. Consider all electrical requirements, as well as physical, such as amplifier  
ventilation and availability of space.  
C. High Power/High Current (mono channel)  
The mono channel can be set to operate in either high power or high current  
mode. Select the mode of operation as follows:  
High Power  
1 Ohm or higher  
High Current  
2. SELECT OPERATING MODES (on underside)  
The configuration switches are accessible by removing the plugs on the  
underside of the amplifier. They allow you to determine the operating  
configuration of the amplifier, including:  
less than 1 Ohm  
The REFERENCE405 subwoofer channel is designed to drive extremely low  
impedances. Be sure that the High Power/High Current switch is in the  
appropriate setting for best performance and maximum reliability.  
5 or 3 channels of input (via bridging)  
normal (High Power) or low impedance (High Current) operation with the  
subwoofer channel  
number of channels of input to drive the amplifier  
D. Inputs (see System Diagrams  
All five channels of the REFERENCE405 can be driven with  
input. If your head unit has one or two pairs of outputs, you can drive all 5  
channels of the amplifier.  
4)  
or 6 channels of  
crossover activation for the subwoofer, front, and rear channels  
A. Stereo/Bridged Mono (see System Diagrams  
4)  
Each pair of the 4 channels rated at 25 watts each (12 volts) can be bridged  
mono. If running either pair of channels in mono, be sure to set the switch for the  
appropriate pair to “mono.”  
Channels of Input  
Switch setting for each set of channels  
# of channels of  
Subwoofer  
CONNECTION DIAGRAMS  
1, 2, 3 or  
1, 2, 3 or  
SUB CH  
4
4
2
4
1
I
6
NOTE: Channels  
2 are not listed. These channels must a/ways receive input  
BRIDGED MONO  
R
+
L
in order for operation of all 5 channels.  
STEREO  
R
+
+
L
3. LOCATION OF THE AMPLIFIER  
When mounting the amplifier, it should be securely mounted to either a panel in  
the vehicle or an amp board or rack that is securely mounted to the vehicle. The  
mounting location should be either in the passenger compartment or in the trunk  
of the vehicle, away from moisture, stray or moving objects, and major electrical  
components (electric motors, fuel pumps, etc.). To provide adequate ventilation,  
mount the amplifier so there are at least 2 inches of freely circulating air above  
and to the sides of it.  
B
Crossover Settings  
Each pair of the 4 channels rated at 25 watts each (12 volts) can be set to  
operate either full range or high pass. To use the built-in high pass  
crossover, select high pass. If you are using the mono channel full range or  
with an external crossover, select bypass.  
4. MOUNTING OF THE AMPLIFIER  
1. Using the amplifier as a template, mark the mounting surface.  
2. Remove the amplifier and drill the holes.  
3. Mount the amplifier to the surface using the provided hardware.  
 
amplifier power LED is on and the source unit is playing, you should have  
sound coming from the speakers.  
5. WIRING  
The only tool needed to make wire terminations at the amplifier will be a flat  
blade-type screwdriver and either wire strippers or a knife. When baring wires for  
connection to the amplifier, remove approximately  
into the terminal block, and tighten the screw. Determine from the chart below  
the minimum gauge power and ground wire for your application.  
of the insulation, insert  
6. LEVEL SETTING  
The input levels are adjusted by means of the input level controls located  
between the RCA inputs and the speaker outputs. When the amplifier is  
operated in the mono/bridged mode, only the right channel input is active.  
up to 5’  
Soundstream Power40  
or Power80  
up to 10’  
Soundstream  
Power40 or Power80  
(4 or 8 ga.)  
greater than  
Soundstream  
Power40  
1.  
Turn the amp’s input level controls to minimum position (fully counter-  
clockwise).  
(4 or 8 ga.)  
2. Set source unit volume to approximately 314 of full volume.  
3. While playing dynamic source material, slowly increase the amplifier’s  
input level(s) until a near maximum undistorted level is heard in the  
system.  
(4  
Wiring Tips  
Use grommets when running cables through any metal or sharp plastic  
to prevent accidental shorting or shearing.  
NOTE: The best Signal to Noise ratio is achieved when the amplifier  
Be certain that the cables don’t interfere with normal operation of the  
vehicle.  
input gains are set between 500  
and 2.5 V.  
Choose the location of the audio cables carefully to prevent interference  
with the vehicle’s high current circuits and vehicle management systems  
(engine computers, relays, etc.).  
7. CROSSOVER ADJUSTMENTS  
The REFERENCE405 incorporates a continuously variable staggered  
asymmetrical electronic crossover. The high and low pass portions of the  
crossover can be adjusted independent of one another. Follow the below  
procedure to adjust the crossover:  
1.  
Carefully run the audio and remote turn-on cables to the amplifier.  
2. Connect the speakers as shown in “Selecting Operating Modes” in section  
2. Use at least a 16 gauge speaker wire, preferably a flexible multi-strand  
cable, such as Soundstream Speaker 160 or Speaker 120.  
Make certain the crossover is activated (see Section  
Operating Modes).  
2. Set crossover frequency adjustments to the 12 o’clock position.  
3. While listening to music, adjust the high pass frequency dial for the high  
pass. Select a frequency high enough to prevent damage to the  
Select  
3. Carefully run the positive power cable from the battery to a fuse or a  
circuit breaker and then to the amplifier. Connect the lead to the battery  
via either a fuse or circuit breaker within 18 inches of the battery. The fuse  
or circuit breaker value should be 40 to 50 amps. Leave the fuse out or the  
speakers, yet low enough that you are able to retain  
speakers.  
in the front  
4. Adjust the subwoofer frequency control in the same way as the high  
pass. This time, listen to bass. You should find a setting that will give  
you a solid sound with minimum “boom” from resonating frequencies.  
Note; Many times, the best results are achieved with the high pass  
frequencies set higher than the low pass. This “staggered” setting  
circuit breaker off until the installation is  
finished. If the circuit  
breaker cannot be shut off manually, do not make the final power connection  
until the installation is finished.  
4. Run a ground cable for the amplifier and securely connect it to a solid  
chassis ground on the vehicle. The ground cable should be the same gauge  
as the power cable.  
compensates for much of the  
resonance inherent in the automobile  
environment.  
You may  
it necessary to readjust the crossover listening to the  
system. The correct settings are a combination of the capabilities of the  
equipment and your listening preferences.  
Double check each and every connection.  
6. Reconnect the fuse or circuit breaker. Power up the system and look at  
the green and red  
depending on the configuration, one should be lit.  
The may be a 2 3 second delay from the time that the source unit is turned  
on to the time that the LED on the amp turns on, which is normal. Once the  
 
10  
8. PROTECTION CIRCUITS  
10. SERVICE  
Your REFERENCE405 amplifier is protected against both overheating and short  
circuits by means of the following circuits:  
Your Soundstream amplifier is protected by a limited warranty. Please read the  
enclosed warranty card.  
Main power supply fuses (2 at 20 amps each)  
Smart Power Supply Thermal Rollback activating at  
A fail-safe thermal protection circuit activating at  
Speaker over-current protection relays (on the 4 x 25 watt channels).  
Your amplifier also incorporates an innovative Fault Diagnosis system that  
identifies a blown power supply fuse.  
11. SPECIFICATIONS  
POWER OUTPUT  
25 watts x 4 plus 100 watts x 1 (4 ohms, 12  
Current)  
50 watts x 1 (4 ohms, 12 V, High  
40 watts x 4 plus 120 watts x 1 (4 ohms, 14.4  
200 watts x 1 (2 ohms)  
If you experience blown main power fuses, DO NOT increase values beyond  
20 amp (each) fuses.  
watts x 1 (1 or  
ohm)  
THD:  
Signal to Noise:  
9. TROUBLESHOOTING  
Frequency Response: 20 Hz to 20  
(dedicated sub channel): 20 Hz to 400 Hz  
Bandwidth: 15 Hz to 50  
0.5  
0.5  
PROBLEM  
No sound and  
CAUSE  
no power or ground at  
are not lit  
(dedicated sub channel): 15 Hz to 1  
Stereo Separation:  
Damping:  
no remote turn-on signal  
blown fuse near battery  
amp power supply fuse is  
blown  
Fault LED is lit  
Input Sensitivity: 100  
2.5 V  
Input Impedance: 12 k ohms  
Repeatedly blown amp fuse,  
frequent activation of Smart  
Power Supply Circuit or  
speaker protection circuit  
breakers  
check speaker  
configuration, amp may be  
in “High Power” mode, put  
amp into “High Current”  
mode if speaker load is  
less than 2 Ohms (see  
Section 2, Selecting  
Operating Modes)  
speaker or leads may be  
shorted  
Crossover Specifications:  
High Pass: 12  
Continuously Variable  
from 60 240 Hz (front rear)  
Low Pass: 24  
from 30 120 Hz  
Continuously Variable  
Dimensions: 16” W x  
D x  
H
verify adequate amplifier  
ventilation  
no sound from subwoofer  
channel with 2 or 4 channels of  
input  
check input settings on  
bottom of amplifier--switch  
should be set at inputs  
2, 3 or 4” unless using  
external inputs  
l
no sound from channels  
check input settings on  
bottom of amplifier--switch  
should be set at inputs “1  
2”  
3
4 with 2 channels of input  
12  
11  
 
SPEAKER WIRING CONFIGURATIONS  
Four 4 Ohm Speakers  
In  
=
Ohm  
SOUNDSTREAM TECHNOLOGIES  
120 Blue Ravine Road  
l
Folsom California 95630 USA  
tel 916.351  
fax 916.351.0414  
 

Sony Headphones MDR DS3000 User Manual
Sony Cell Phone C6902 User Manual
Sony DVD Player DVP NC60P User Manual
Sony GPS Receiver NVX P1 User Manual
Sony Headphones DR CX1W User Manual
Sony Indoor Furnishings SU 36HX1 User Manual
Sony MP3 Player WM EX20 User Manual
StarTechcom Cable Box ST121UTPDVEU User Manual
Sylvania DVD VCR Combo DVC840F User Manual
Tangent Stereo System TNR 50 User Manual