Pyramid Car Audio PB844, PB744, PB1644 User Manual

congratulations...

On your purchase of a Pyramid Signature Series amplifier. This amplifier extends the pyramid tradition into a totally new series of amps, designed from the ground up to deliver the power, performance and flexibility the modern car audio enthusiast demands.

When you check the list of features offered by the PB744,PB844 and PB1644, you’ll know you made the right choice with a Pyramid Power amplifier.

precautions

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.

. 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, do so only with a fuse identical to that supplied with the amplifier. Using a fuse of a different type or rating may result in damage that isn’t covered in the manufacturer’s warranty.

notes

protection circuitry

The built-in protection circuitry in the Pyramid Signature amplifiers will disable the ampl ifier i f it senses an input overload, a speaker short circuit, or extreme temperature conditions.

When the protection circuit is activated by any of these conditions, the Protection LED will be illuminated.

If thi s occurs ,carefully inspect the system to determine the source of the problem.

If the s hutdown was a result of a thermal overload condition, allow the amplifier to cool down be fore attempting to restart it.

If the s hutdown was a result of an input overload, or speaker short circuit, be sure to corr the condition before restarting.

The amplifier can be restarted by turning the remote power OFF and then ON again.

troubleshooting

No out pu t.

Conf ir m th at all terminal s tr ip c onnections ar e se cu re and tight. Chec k bo th i n-line and buil t- in f uses. Both the +1 2V a nd the Remote ter mi na ls

must h av e +1 2V referenced t o ch as sis ground. Conf ir m th at the audio sign al s ou rce(car radio , eq ualizer, etc.) I s co nn ected

and is s up pl ying output sig na l. To ch ec k if t he amp is supplyi ng s ig nal, unplug the ca bl es f rom the signal so ur ce (but leave them p lu gged into the amp ). Brie fl y ta p the center pin of e ac h of t he disconnect ed R CA pl ugs with your f in ge r. This s ho ul d produce a noise )f ee dback) in you r sp ea kers.

Only o ne c ha nnel works.

Conf ir m th at all terminal s tr ip c onnections ar e se cu re and tight.

Conf ir m th at all terminal s tr ip c onnections ar e se cu re and tight. Chec k th e Ba lance control o n th e he ad unit(or othe r so urce) to verify t ha t it is set t o it s mi dpoint.

If you a re u si ng the Low Level RC A inp ut , r everse the inpu t pl ugs at the ampl if ie r(i.e.,swit ch t he L with the R) . If t he c hannels which i s si le nt switches to the o th er s ide, the proble m is e it her in the head uni t/ ot her source or t he conn ec ti ng cables.

Weak output.

Read ju st t he Input Level Co nt ro l(s) to better su it t he i nput signal .

Nois e in t he a udio.

If the n oi se i s a “whine” whose p it ch f ollows the engi ne s peed, confirm t ha t the am pl if ier and any other s ig na l sources(hes d un it, etc.) Are prop er ly g round. If the n oi se i s a “clicking” or “ po pp ing” noise whos e ra te follows the en gi ne spee d, t hi s usually means t ha t th e vehicle is equi pp ed with resisto r sp ar k plug s an d wi res, or that the ig ni ti on is in need of serv ic e.

Chec k th e ro uting of the spea ke r an d input wires to ma ke s ur e they are not adja ce nt t o wire which inte rc on nect lights and o th er accessorie s.

If the a bo ve s teps fail to impr ov e or c lear noise inte rf er ence, the sys te m shou ld b e ch ecked by a profes si on al mobile aud io i ns taller.

table of contents

general features

features and speifications

2ch amp PB744

4ch amp PB844

4ch amp PB1644

electrical connections

2ch amp PB744 4ch amp PB844

4ch amp PB1644

stereo input connections

2CH amp PB744

mono input connections

2CH amp PB744

2/4 channel input connections

4CH amp PB844 PB1644

3- 4

5- 6 7- 8

9 10

mono input connections

4CH amp PB844 PB1644

speaker connections

2ch amp PB744

4CH amp PB844

mounting and installation

protection circuitry and troubleshooting

precautions

17-18

19-20

general features

PB744

High Performance 1000Watt 2 channel Bridgeable MOSFET Amplifier

．

500 Wa tts×2 Outpu t

．

100 0 Watts×1 Bridged O utput

．

Variabl e Hi/Lo Elec troni c Cross over Ne twork

．

Variabl e Bass Boost (0-+1 8dB@6 0Hz)

．

Variabl e Input Leve l(Gai n)Con trol

．

Rem ote Turn o n/Off

．

RCA In puts

．

Pow er ON LED I ndica tor

．

LED P rotec tion In dicat or

．

S/N R atio: > 95dB

．

THD : <0.04 %

．

The rmal Pr otect ion

．

Ove rload P rotec tion

．

Sho rt Circ uit Pro tecti on

．

Ant i-Thu mp Turn- On

PB844

High Performance 1600Watt 4 channel Bridgeable MOSFET Amplifier

．

400 Wa tts×4 Output

．

800 Wa tts× 2 Bridged Ou tput (4 00W×2+800W×1) 200 0 Watts× 2 Bridged O utput ( 100W×2+20 00 W×1)

．

Variabl e Hi/Lo Elec troni c Cross over Ne twork

．

Variabl e Bass Boost (0-+1 8dB@6 0Hz)

．

Variabl e Input Leve l(Gai n)Con trol

．

Rem ote Turn o n/Off

．

RCA In puts

．．

Mul tiFun tion VF DMul tiFun tion VF D Mul tiFun tion VF D

．

Pow er ON LED I ndica tor

．

LED P rotec tion In dicat or

．

S/N R atio: > 95dB

．

THD : <0.04 %

．

The rmal Pr otect ion

．

Ove rload P rotec tion

．

Sho rt Circ uit Pro tecti on

．

Ant i-Thu mp Turn- On

PB1644

High Performance 4000Watt 4 channel Bridgeable MOSFET Amplifier

．

100 0 Watts×4 Outp ut

．

．．

．

Variabl e Hi/Lo Elec troni c Cross over Ne twork

．

Variabl e Bass Boost (0-+1 8dB@6 0Hz)

．

Variabl e Input Leve l(Gai n)Con trol

．

Rem ote Turn o n/Off

．

RCA In puts

．

Pow er ON LED I ndica tor

．

LED P rotec tion In dicat or

．

S/N R atio: > 95dB

．

THD : <0.04 %

．

The rmal Pr otect ion

．

Ove rload P rotec tion

．

Sho rt Circ uit Pro tecti on

．

Ant i-Thu mp Turn- On

mounting and installation

Your new Pyramid Signature Series amplifier comes complete with required mounting hardware. When determining a suitable location in your vehicle for the amp, please remember that it is a highpower electronic device capable of generating high heat.

For this reason,

ventilation, a minimum of dust, and no moisture.

always choose a location in your vehicle which has low vibration,

Be sure to mount the amp

to allow reasonable airflow over the cooling fins.

Mark the location for the mounting screw holes by positioning the amp where you

it and use a scribe (or one of the mounting screws) inserted in each of the mounting holes to mark

by positioning the amp where you

the mounting surface for the mounting surface. If the mounting surface is carpeted, measure the hole centers and mark with a felt tip pen.

Before attempting to drill the mounting holes, take note of any wires, lines or otherdevices in your vehicle which may be located behind the mounting surface!

mounting surface for the mounting screws and insert them. Tighten the screws securely.

When making electrical connections to your amplifier, please observe the following:

Use at least 8 gauge wire for power and ground connections.

Wire the amplifier directly to the car battery. For the ground connection, use the shortest possible wire to a good chassis ground point. Wire the Remote connection to the auto start lead of your head unit, equalizer or power antenna.

About power fuses:

Pyramid Signature Series amplifiers feature built-in fuse systems. These fuses protect both the amplifier and the electrical system in your vehicle from fault conditions. If you ever need to replace the fuse in your Pyramid Signature Series amp, use a fuse of exactly the same type and rating. A different type or rating of fuse may result in damage or fire.

in such a manner as

wish to install

drill pilot holes in the

Then

adequate

PB1644

speaker connections

4ch amp PB1644

2CH Bridged Output Mode With Subwoofer Output

MINIMUN SPEAKER IMPEDANCE 4OHMS!

SUBWOOFER

SPEAKERS

PB744

PB1217

protection LED

low level inputs power LED high pass frequency control low pass frequency control

speaker connections

SPEAKER OUTPUT

features and controls

2ch amp PB744

output level

remote bass boost

input level control

bass boost level

crossover mode selector

power fuse

power terminals

+ 8 hidden pages