Jamo MPA-101 Owner's Manual

MPA-101

WARNING: Improper installation could result in damage to the amplifier and/or speakers. Read

all instructions before installation.

The lightning flash with arrowhead, within
an equilateral triangle, is intended to alert the
user to the presence of uninsulated
"dangerous voltage" within the product's
enclosure that may be of sufficient
magnutide to constitute a risk of electric
shock to persons.

Warning:
To prevent electric shock, never open this
product.
No user-serviceable parts inside.
Leave all service to qualified service
personnel.

Safety Precautions

The exclamation point within an equilateral
triangle is intended to alert the user to the
presence of important operating and
maintenance (servicing) instructions in the
literature accompanying the appliance

1. Heed warnings : All warnings on the product and in the User’s
Guide must be adhered to.

2. Read all instructions before using this product, and keep the
instructions safe for later reference.

3. WARNING: To reduce the risk of fire or eletric shock, do not
expose this product to rain or moisture - Never use the product
immediately after moving it from a cold environment, which
may cause condensation.

4. The product must be positioned in such a way that there is
sufficient ventilation at all times.

5. Do not place the product near heat sources, such as radiators,
heaters or any other heat-emitting appliances.

6. Avoid placing in direct sunlight.

7. The product may only be attached to a mains supply that
corresponds to the marking on the product.
Do not defeat the safety purpose of a polarized or grounding
type plug. A polarized plug has two blades with one wider than
the other. A grounding type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided
for safety reasons. If the provided mains plug does not fit into
your outlet, consult an electrician for replacement of the obso­lete outlet.

8. If the product is not used for a longer period of time, or for
added protection during a lightning storm, disconnect the
mains lead from the wall outlet.

9. Pull on the mains plug - never the mains lead itself - when
disconnecting the plug from the wall outlet.
Ensure that the mains lead does not become stretched or
trapped/clamped, especially around the mains plug and the
point at which the lead is connected to the product.

10. Always follow the user instructions when making connections
to other appliances.

11. Take care not to drop objects or spill liquid through the
openings in the product.

12. The product should be serviced by qualified personnel if:

• The mains lead or plug is damaged.

• Objects are dropped or liquid is spilled into the product.

• The product has been exposed to rain.

• The product is not operating normally.

•The product has been dropped and/or the cabinet is
damaged.

13. Please note that this product - either alone or combined with
an amplifier, loudspeakers or headphones - can cause dam­age to hearing.
Never play at high volume for longer periods and never play
so loud that it feels uncomfortable.
Warning! It can be particularly difficult to estimate sound pres­sure in the deep bass area, which is why extra attention must
be paid in order to avoid harmful sound pressures.
Always contact your doctor if you experience loss of hearing
and/or ringing in the ears.

14. Warning : Power-supply cords should be routed so that they
are not likely to be walked on or pinched by items placed upon
or against them, paying particular attention to cords at plugs,
and the point at which they exit from the product.

Contents:

Introduction Page 4

Features: Page 4

Jamo MPA-101 front panel Page 5

Jamo MPA-101 rear panel Page 6

Connection Page 7

Connecting examples Page 8

Passive subwoofer Page 8
Fullrange stereo Page 9
2 x 100W bridged Page 10
Daisy chain Page 11

Specifications Page 12

Warranty Page 13

Introduction

Congratulations on your purchase of your new Jamo Multi-Purpose Amplifier (MPA-101). It is
backed by state-of-the-art engineering and manufacturing techniques to bring you the best
quality craftsmanship and reliable performance.

The MPA-101 is specifically designed for home theatre applications. Because of its ample power
and two-channel capacity (stereo), it can fit into virtually any surround application. Narrow width
chassis is designed for convenient shelf or system rack mounting in the space of the one stereo
component.

It allows you to use one amplifier as left and right stereo front speakers, second amplifier use as
left and right rear (surround) speakers and third amplifier use for centre channel.

Bridge mode capability allows the use of the two channels connected together to form one
high power amplifier channel, providing 100 watts into 8 Ohm.

The MPA-101 is also a subwoofer amplifier with adjustable electronic crossover. With switch in
OFF position it becomes full range amplifier.

The power rating for the Jamo MPA-101 power amplifier are obtained using fixed value test
load impedances and high intensity sine wave test tones. However, the actual impedance of the
loudspeaker will vary with frequency, deviating somewhat from the loudspeaker manufacturer’s
nominal impedance rating.

This Jamo amplifier has been specially designed to drive any modern loudspeaker system with
a rated impedance of 4 Ohms or higher.

Features

1. Power output, rated at 2x50 Watts (stereo) into 4 Ohm

2. High power output (bridged mode), rated at 100 Watts into 8 Ohm

3. Subwoofer amplifier, adjustable crossover frequency 50 Hz – 150 Hz

4. Full range amplifier

5. Extensive heat sinks for reliable operation and long life of the amplifier

6. High current discrete power transistors in the output stage for the best possible performance

7. Automatic power turn “ON”

8. Level control

9. Gold plated RCA input and output jacks

10. Heavy duty push button binding posts

11. Overload protection

4

Jamo MPA-101 front panel

c Power LED

Flashing blue - Standby mode
Blue - Amplifier On
Flashing red - Thermal protection
Red - Overload protection

d Level adjustment

5

Jamo MPA-101 rear panel

c Power switch
d Socket for mains cable
e Speaker output: Speakers terminals
f Low pass adjustment: Output frequency

is adjustable between 50 - 150 Hz. Only
adjustable when „low pass“ is selected g

g Low pass: f

Flat: Fullrange

6

h Stereo/mono: Stereo mode - 2 x 50 watt

stereo output (4✡)
Mono mode - 100 watt
mono output (8✡)

i On - Amplifier ON

AUTO - auto turn on mode

j Line in: Line level input from source
k Line out: Line level output

Connection

The Jamo MPA-101 is equipped with gold-plated push button binding posts which will accept
very heavy stripped wire.
Ask your local Jamo dealer for advice on the choice of cable.

Connect the loudspeakers to your Jamo MPA-101 as follows:

1. Turn of the MPA-101

2. Carefully remove approx. 3/8“ (10 mm) of the insulating material - beware not to damage
the conductors!

3. Twist the conductor ends

4. Push the binding posts so the conductors can easily fit into the holes

Note: Make sure that the stripped + and - wires
do not touch each other, as a short-circuit could
damage the Jamo MPA-101’s output section.

Always make sure that:

Your loudspeakers are in correct phase;
The loudspeaker’s + terminal is connected to the Jamo MPA-101’s + terminal.
The loudspeaker’s - terminal is connected to the Jamo MPA-101’s - terminal.
Usually, the loudspeaker cable is marked on one wire which is normally used to connect the +
terminals to ensure correct phase.

7

Passive subwoofer

Connecting examples

When „Low pass“ is selected, you can adjust the low pass frequency between 50 - 150 Hz. This
makes it possible to make the subwoofer match your front speakers.

8

Fullrange stereo

9

2 x 100W bridged

10

Daisy chain

When using this feature you can connect all the MPA-101 in parallel you need.

11

Specifications

Rated Power Output

Total Harmonic Distortion (THD)

Signal-to-Noise Ratio

Crossover Freq. Responce (-3dB):

Auto Turn On Sensitivity

Delay „OFF“ Time

Input Sensitivity Line In

Line Out Freq. Response (-3dB)

Input Impedance Line In

Max. noise+hum Vol Max

Clearance for ventilation - Back

50 Watts (Stereo) into 4✡ Load

100 Watts (BTL) into 8✡ Load

<0.1%

@ Min position 28-45Hz 40Hz/0dB ref
@ Max position 32-60Hz 40Hz/odB ref

11.0V +/-3 Full Range 1KHz

7.0V +/-2 Sub Input 50 Hz

15 - 20 minutes

Output 1 W/4✡ with:
Full Range 44mV +/-10 1KHz
Sub In 7mV +/-2 50Hz

20Hz +/-5K - 20 KHz +/-5K 1KHz/0dB ref

47K✡ +/-5

<3.0mV, Input Shorted

Minimum 2" (50mm)

12

Power Requirement

Weight

Shipping Weight

Dimentions:

Width
Height
Depth

Clearance for ventilation

Top
Back

115V 60Hz

7.8lbs (3.6 kgs)

8.6lbs (3.9kgs)

6.000“ (152.00mm)

3.125“ (79.00mm)

11.4375“ (290.00mm)

Minimum 3/8“ (10 mm)
Minimum 2“ (50 mm)

The scope of the warranty

The warranty period will come into force as from the purchase date stated on the invoice. The
warranty will apply for the following period of time:

• 2 years for electronics (power supply, amplifier, etc.)

• 7 years for other parts (cabinet, speaker units, etc.)

In case of warranty inquiries, please contact your dealer.

In case of request for service under warranty, please enclose your original receipt.

Defects covered by the warranty:
Except for the defects stated below, the warranty covers any production and material defects of
the product.

Defects not covered by the warranty:

• Defects arising from accidents, misuse, normal wear and tear, mis-maintenance, voltage varia­tion, overloading, stroke of lightning, and other force majeure events

• Defects arising from incorrect installation or operation

• Defects arising from modification/repair/attempt of repair by a non-authorised service centre

• Defects arising from the use of non-original spare parts

• Defects on products with altered or lacking series number

• Other defects due to conditions or circumstances beyond the supplier’s control

Transportation costs for servicing are not covered by the warranty.

The supplier is liable only to repair or replace defective parts or products. A replacement cannot
exceed the value of the product under warranty.

13

MPA-101 / 44.2000