Pyramid Technologies PB448X User Manual

Owners  
Manual  
S u p e r B l u e  
PB444X  
PB446X  
PB448X  
PB449X  
2 ch amp PB444X • PB446X• PB449X • 4 ch amp PB448X  
specifications  
PB444X PB446X PB448X PB449X  
2 ch amplifier  
2 ch amplifier  
4 ch amplifier  
2 ch amplifier  
output power  
@14.4 V.D.C 1 Khz  
Maximum Power Output  
200W x 2  
300W x 2  
250W x 4  
500W x 2  
RMS Power Output @ 4 ohms 60W x 2  
70W x 2  
yes  
65W x 4  
no  
125W x 2  
yes  
bass/treble control  
subwoofer crossover  
bridged mode  
yes  
no  
no  
yes  
no  
400W x 1  
600W x 1  
10-30 Khz  
500W x 2  
10-30 Khz  
1000W x 1  
10-30 Khz  
frequency response  
input impedance  
15-30 Khz  
( +_3dB)  
(
3dB)  
+_  
(
3dB)  
+_  
(
3dB)  
+_  
10 K-Ohms  
150 mV  
10 K-Ohms (low) 20 K-Ohms (low) 20 K-Ohms (low)  
100 Ohms (high) 100 Ohms (high) 100 Ohms (high)  
input sensitivity  
250 mV (low)  
2.5 V (high)  
250 mV (low)  
2.5 V (high)  
250 mV (low)  
2.5 V (high)  
power supply voltage  
matching speaker impedance  
maximum current draw  
DC 14.4V  
DC 14.4V  
DC 14.4V  
DC 14.4V  
negative ground negative ground negative ground negative ground  
(10.5-16V)  
(10.5-16V)  
(10.5-16V)  
(10.5-16V)  
4-8 Ohms  
2-8 Ohms  
2-8 Ohms  
2-8 Ohms  
15 A  
20 A  
30 A  
30 A  
dimensions (W x H x D)  
mm  
230 x 59 x 270  
307 x 59 x 270  
389 x 59 x 270  
389 x 59 x 270  
9.05 x 2.32 x 10.63 12.09 x 2.32 x 10.63 15.31 x 2.32 x 10.63 15.31 x 2.32 x 10.63  
inches  
net weight  
kg  
2.25  
4.95  
2.95  
6.49  
3.85  
8.47  
3.85  
8.47  
lbs  
1
2 ch amp PB444X  
features and controls  
low level inputs  
bass control  
speaker connections  
power fuse  
treble control  
input gain control  
protection indicator  
power terminals  
power LED  
owner’s manual  
2
low level inputs this amp features gold-plated RCA input  
jacks for high impedance input. Use these  
with car stereo output which uses RCA-type  
connector cables.  
bass control use this control to adjust the bass output level  
to suit your taste or audio program material.  
treble control use this control to adjust the treble output level  
to suit your taste or audio program material.  
input gain control use this control to match the outputs of  
your head unit to the amplifier. Starting  
with your head unit volume control set at  
about the 2 o’clock position, increase the  
amp gain control until distortion begins to  
occur, and reduce slightly from this point.  
power LED this indicator is illuminated when power  
is applied.  
speaker connections these terminals are 14K gold plated to  
guarantee high conductivity and minimum  
signal loss.  
power fuse the fuse protects the amplifier and your car’s  
electrical system from short circuit conditions.  
protection indicator if the amplifier is incorrectly wired or not  
matched to the speaker system, the protection  
indicator will come on and the amplifier will  
turn off. Disconnect the power wire to reset the  
amplifier.  
power terminals use these connectors to deliver power, ground,  
and remote turn-on control to the amplifier.  
3
features2achnamdp PcBo44n6XtrPBo44l9sX  
high level inputs  
power LED  
low level inputs  
input gain control  
treble control  
bass control  
bridged mode switch  
speaker connections  
power terminals  
protection indicator  
power fuse  
owner’s manual  
4
high level inputs if your car stereo does not have RCA output  
jacks, you can connect the speaker output  
from the stereo system to the amplifier.  
power LED this indicator is illuminated when power  
is applied.  
low level inputs this amp features gold-plated RCA input  
jacks for high impedance input. Use these  
with car stereo output which uses RCA-type  
connector cables.  
input gain control use this control to match the outputs of  
your head unit to the amplifier. Starting  
with your head unit volume control set at  
about the 2 o’clock position, increase the  
amp gain control until distortion begins to  
occur, and reduce slightly from this point.  
treble control use the control to adjust the treble output level  
to suit your taste or audio program material.  
bass control use the control to adjust the bass output level  
to suit your taste or audio program material.  
bridged mode switch the amplifier can be bridged to form a  
high-power one channel unit. Make sure  
that the speaker system on the bridged  
channel is capable of handling the rated  
power and is of the proper impedance.  
speaker connections these terminals are 14K gold plated to  
guarantee high conductivity and minimum  
signal loss.  
power terminals use these connectors to deliver power, ground,  
and remote turn-on control to the amplifier.  
protection indicator if the amplifier is incorrectly wired or not  
matched to the speaker system, the protection  
indicator will come on and the amplifier will  
turn off. Disconnect the power wire to reset the  
amplifier.  
power fuse the fuse protects the amplifier and your car’s  
electrical system from short circuit conditions.  
5
4 ch amp PB448X  
features and controls  
power LED  
high level inputs  
low level inputs  
front input gain control  
front bridged mode switch  
rear input gain control  
rear bridged mode switch  
subwoofer crossover on/off switch  
subwoofer crossover frequency control  
speaker connections  
power terminals  
power fuse  
protection indicator  
owner’s manual  
6
power LED this indicator is illuminated when power  
is applied.  
high level inputs if your car stereo does not have RCA output  
jacks, you can connect the speaker output  
from the stereo system to the amplifier.  
low level inputs this amp features gold-plated RCA input  
jacks for high impedance input. Use these  
with car stereo output which uses RCA-type  
connector cables.  
input gain controls use these controls to match the outputs of  
your head unit to each pair of amplifier  
inputs. Starting with your head unit volume  
control set at about the 2 o’clock position,  
increase the amp gain controls until  
distortion begins to occur, and reduce slightly  
from this point.  
bridged mode switch the amplifier can be bridged to form a  
high-power two channels unit. Make sure  
that the speaker system on the bridged  
channel is capable of handling the rated  
power and is of the proper impedance.  
subwoofer crossover this flexible amplifier can be set up with  
on/off switch left/right (or bridged) rear subwoofer  
system(s). This switch activate the rear  
subwoofer crossover.  
subwoofer crossover when activated, this control sets the upper  
frequency control frequency limit for signals sent to the rear  
channel(s).  
speaker connections these terminals are 14K gold plated to  
guarantee high conductivity and minimum  
signal loss.  
power terminals use these connectors to deliver power, ground,  
and remote turn-on control to the amplifier.  
power fuse the fuse protects the amplifier and your car’s  
electrical system from short circuit conditions.  
protection indicator if the amplifier is incorrectly wired or not  
matched to the speaker system, the protection  
indicator will come on and the amplifier will  
turn off. Disconnect the power wire to reset the  
amplifier.  
7
2 ch amp PB444X • PB446X • PB449X • 4 ch amp PB448X  
mounting and installation  
Please read the Installation Precautions section below before installing  
your Pyramid Super Blue amplifier, and then refer to the diagrams  
provided to connect power, audio input and speaker connections  
according to your own system configuration requirements.  
Installation Precautions  
• Before you drill or cut any holes, investigate your car’s layout  
very carefully. Take care when you work near the gas tank,  
fuel lines, hydraulic line and electrical wiring.  
• Do not operate the amplifier when it is unmounted. Attach  
all audio system components securely within the automobile  
to prevent damage, especially in an accident.  
• Do not mount this amplifier so that the wire connections are  
unprotected or in a pinched condition, or likely to be damaged  
by nearby objects. Be sure to select a location inside your  
vehicle which has adequate ventilation.  
• Before making or breaking power connections in your system,  
disconnect the vehicle battery. Confirm that your head unit or  
other equipment is turned off while connecting the input jacks  
and speaker terminals.  
• If you need to replace the power fuse, only replace it with  
a fuse identical to that supplied with the system. Using a fuse  
of a different type or rating may result in damage to your  
system which isn’t covered by the manufacturer’s warranty.  
screw  
spring washer  
flat washer  
solid mounting  
surface  
owner’s manual  
8
2 ch amp PB444X• PB446X• PB449X  
electrical connections  
PB444X  
to remote  
turn-on  
+12V  
12V battery  
head unit  
PB446X • PB449X  
to remote  
turn-on  
+12V  
12V battery  
head unit  
9
4 ch amp PB448X  
electrical connections  
PB448X  
to remote  
turn-on  
+12V  
12V battery  
head unit  
owner’s manual  
10  
2 ch amp PB444X  
stereo input connections  
head unit  
L/R audio outputs  
2 ch amp PB444X  
mono input connections  
To a second  
amplifier  
head unit  
Y adaptors  
11  
2 ch amp PB446X • PB449X  
stereo input connections  
using low level inputs  
head unit  
L/R audio outputs  
PLEASE NOTE! If using  
using high level inputs  
high level inputs, do not  
use the low level RCA  
inputs at the same time!  
wiring harness  
head unit  
R
R
L
L
from speaker terminals  
owner’s manual  
12  
2 ch amp PB446X •PB449X  
mono input connections  
using low level inputs  
to a second  
amplifier  
head unit  
Y adaptors  
PLEASE NOTE! If using  
using high level inputs  
high level inputs, do not  
use the low level RCA  
inputs at the same time!  
wiring harness  
to a second  
amplifier  
head unit  
wiring  
harness  
L
L
R
R
from speaker terminals  
13  
4 ch amp PB448X  
2/4 channel input connections  
4 CHinput connections  
using low level inputs  
L/R front  
audio outputs  
L/R rear  
audio outputs  
head unit  
2 CHinput connections  
using low level inputs  
PLEASE NOTE! If using  
high level inputs, do not  
use the low level RCA  
inputs at the same time!  
left output  
head unit  
right output  
Y adaptors  
owner’s manual  
14  
4 ch amp PB448X  
hi level input connections  
4 CHfloating ground connection  
wiring harness  
head unit  
orange  
black  
black  
orange  
black  
black  
R
L
R
L
orange  
orange  
REAR  
FRONT  
4 CHharness wiring  
for common ground connection  
head unit  
R
L R  
L
orange  
black  
orange  
black  
black  
black  
orange  
orange  
REAR  
FRONT  
15  
4 ch amp PB448X  
mono input connections  
4 CH mono input connections  
using low level inputs  
rear outputs  
R L  
L
R
head unit  
front outputs  
2 CHmono input connections  
using low level inputs  
PLEASE NOTE! If using  
high level inputs, do not  
use the low level RCA  
inputs at the same time!  
right audio  
outputs  
head unit  
left audio  
outputs  
owner’s manual  
16  
4 ch amp PB448X  
hi level mono input connections  
4 CHfloating ground connection  
wiring harness  
head unit  
from  
orange  
black  
black  
orange  
black  
black  
speaker  
L
R
terminals  
orange  
orange  
4 CHharness wiring  
for common ground connection  
head unit  
from L  
R
speaker terminals  
orange  
black  
orange  
black  
black  
black  
orange  
orange  
17  
2 ch amp PB444X  
speaker connections  
stereo output mode  
LEFT speaker  
RIGHT speaker  
bridged mono output mode  
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS!  
speaker  
owner’s manual  
18  
speaker 2ccoh anmpnPBe44c6XtioPBn44s9X  
stereo output mode  
mode switch in  
STEREO position  
LEFT speaker  
RIGHT speaker  
bridged mono output mode  
mode switch in  
BRIDGED position  
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS!  
speaker  
19  
4 ch amp PB448X  
speaker connections  
4 channel (stereo) output mode  
mode switch in  
STEREO position  
L
R
REAR  
FRONT  
speakers  
speakers  
R
L
bridged mono output mode  
mode switch in  
BRIDGED position  
L
speakers  
R
MINIMUM  
SPEAKER  
IMPEDANCE  
4 OHMS!  
owner’s manual  
20  
2 ch amp PB444X • PB446X • PB449X • 4 ch amp PB442X• PB448X  
troubleshooting  
Before removing your amplifier, refer to the list below and follow the  
suggested procedures. Always test the speakers and their wires first.  
Amplifier will not power up.  
• Check for good ground connection.  
• Check that remote DC terminal has at least +12v DC.  
• Check that there is battery power on the + terminal.  
• Check all fuses.  
• Check that Protection LED is not lit. If it is lit, shut off  
amplifier briefly and then repower it.  
High hiss or engine noise (alternator whine) in speakers.  
• Disconnect all RCA inputs to the amplifier(s) – if hiss/noise  
disappears, then plug in the component driving the amplifier  
and unplug its inputs. If hiss/noise disappears, go on until  
the faulty/noisy component is found.  
• It is best to set the amplifier's input level as insensitive  
as possible. The best subjective S/N ratio is obtainable  
this way. Try to drive as high a signal level from the head  
unit as possible.  
Protection LED comes on when the amplifier is powered up.  
• Check for shorts on speaker leads.  
• Check that the volume control on the head unit is turned  
down low.  
• Remove speaker leads, and reset the amplifier. If the  
Protection LED still comes on, then the amplifier is faulty.  
Amplifier(s) gets very hot.  
• Check that the minimum speaker impedance for that model  
is correct.  
• Check for speaker shorts.  
• Check that there is good airflow around the amplifier. In  
some applications, an external cooling fan may be required.  
Distorted sound  
• Check that the Level control(s) is set to match the signal  
level of the head unit.  
• Check that all crossover frequencies have been properly set.  
• Check for shorts on the speaker leads.  
High squeal noise from speakers.  
• This is almost always caused by a poorly-grounded RCA  
patch cord.  
21  
MANUFACTURER’S LIMITED TWO YEAR WARRANTY  
PYRAMID SOUND CORP. warrants this unit to be free from  
defective material or workmanship and will repair or replace this  
unit or any part thereof if it proves defective in normal use or  
service within two (2) years from the date of original purchase.  
Our obligation under this warranty is limited to repairing or  
replacing, at our discretion, the defective instrument or any part  
thereof when it is returned, transportation prepaid to the Pyramid  
Service Center at the address below. This warranty will be consi-  
dered void if the unit has been tampered with, improperly serviced,  
subjected to abuse or misuse or if installed in a commercial vehicle.  
This warranty does not cover accidental damage. When returning  
this unit for service, please include $10.00 for return postage  
and handling. Send your unit to:  
PYRAMID SERVICE CENTER  
1600 63rd Street  
Brooklyn, New York 11204  
IMPORTANT: Pack carefully in original carton if possible. We are  
not responsible for damage incurred in returning items for repair.  
A letter stating your exact street address, daytime phone number,  
and the problem you are experiencing should be included. You  
must also enclose a copy of the original receipt as proof of date  
of purchase.  
FOR YOUR PROTECTION  
Completely and immediately mail the Product Registration Card  
so that we may contact you directly in the event a safety notification  
is issued in accordance with the 1972 Consumer Product Safety  
Act, or for other reasons Pyramid may deem necessary.  
TECHNICAL SUPPORT HOTLINE  
Our technical department will gladly answer any questions you  
may have about our products. They cannot, however tell you the  
status of a repair, or handle other customer service situations.  
1-800-934-2277  
Monday through Thursday, 9AM to 5PM  
Friday 9AM to 2PM Eastern.  

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