Jasmine LP 2.5DU MM Phono Stage User manual

Jasmine LP-2.5DU
MM/MC Phono Pre-Amplifier
Owner’s Manual
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Safety Precautions _______________
To achieve the best performance from your Jasmine LP
2.5DU MM/MC Phono Stage, and for your own safety,
please read and follow these important safety
instructions:
Never place the Jasmine LP 2.5DU near heat sources
such as radiators, fireplaces, stoves, or other appliances
that produce heat. Avoid placing the Jasmine LP 2.5DU
where it will be subject to direct sunlight or low
temperatures.
zAC extension cords are not recommended for use with
this product. If an extension cord must be used, be sure
it is an approved type and has sufficient current
carrying capacity for this product.
zBefore cleaning the Jasmine LP 2.5DU, always
disconnect the power supply cord. Use a soft cloth and
if necessary, dampen with clean water or mild cleaning
agent. Never apply water, or any other cleaner, directly
to the chassis.
zIf you smell smoke or an abnormal smell, immediately
unplug the Jasmine LP 2.5DU from the power supply
and contact your Jasmine dealer.
zNever attempt to do service on the Jasmine LP 2.5DU
beyond what is described in this Owner’s Manual.
Qualified service personnel should perform all repairs.
zUnplug unit if it becomes wet.
zDo not open unit when attached to AC outlet;
dangerous voltages may be encountered.
zReplace fuse only with the exact type originally
included.

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Contents _______________________
A brief of Jasmine
The design philosophy of Jasmine
Unpacking
The accessory kit
Choosing a location for the Jasmine phono pre-amplifier
Connecting to AC power
Connecting to the turntable
Connecting to the amplifiers
Choosing MM or MC mode
Choosing a correct impedance parameter
Power on & off sequence
Safet
y
Precautions 2
Introduction 4
Installation 5
Connections 6
O
p
eration 8
Warrant
y
9
S
p
ecifications
10

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Introduction _______________________
All of us at Jasmine would like to offer thanks and
congratulations to you for purchasing the Jasmine LP 2.5DU.
We sincerely believe that your Jasmine LP 2.5DU is an
intelligent purchase decision that will bring you many years of
musical pleasure and satisfaction. While every new owner is
anxious to begin listening, we encourage you to take a few
minutes to read this manual and familiarize yourself with the
full capabilities of the Jasmine LP 2.5DU.
To reduce the risk of injury or damage to your Jasmine LP 2.5DU,
please read the safety instructions on the first page of this
manual. In addition, please pay particular attention to the
sections of this manual where the symbol at left is shown.
Jasmine Audio was established by a group of professional
audiophile with the pure passion for the perfection of sound in
2001. The result of this passion is products with marvelous and
smooth dynamic sound combined with innovative design. No
detail on a Jasmine product is left unattended, and all
components are handpicked by experienced and qualified
engineers. Owning a Jasmine product should be seen as being
part of a very special “club”, created by enthusiasts for
enthusiasts.
Pure, Simple, Natural !
A Brief Histor
y
of Jasmine
The Desi
g
n Philoso
p
h
y
of Jasmine

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Installation _______________________
This section includes information on how to unpack and
position your Jasmine LP 2.5DU Phono Pre-Amplifier.
After carefully unpacking your Jasmine LP 2.5DU, inspect for
any shipping damage and call your dealer immediately if any is
found. Do not plug your Jasmine LP 2.5DU into any outlet if
you find shipping damage.
Please save all packing materials so the unit can be easily and
safely shipped if the need arises.
Included in the carton, you will find an accessory kit that
contains the following:
zAC power cord
zDC interconnect cord
For best performance, place the Jasmine LP 2.5DU on a solid,
non-resonant shelf.
Notice: Placing the two boxes in side-by-side way
Instead of stack will make the noise least.
Un
p
ackin
g
The Accessor
y
Kit
Choosin
g
a Location for the
Jasmine Phono Pre-Am
p
lifier

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Connections _______________________
This section provides instructions to connect the Jasmine LP
2.5DU to the rest of your music system. Below is an illustration
of the Jasmine LP 2.5DU rear panel, showing all inputs and
outputs.
Output Input MC/MM Mode Ground
Selector
DC Inlet InputChannel Impedance Selector
Selector
PowerModelSelector
DCOutlet Fuse ACInlet PowerSwitch
Avoid allowing static shocks to be applied to the inputs or
outputs. To prevent static shocks, touch any grounded surface,
such as the chassis of a component that is plugged into an AC
socket, before connecting or removing a cable.
Inputs and outputs can be safely connected to the Jasmine LP
2.5DU when the AC power is switched off.
Check to make sure your Jasmine LP 2.5DU has been
manufactured for operation at your AC line voltage.
Attempting to use your Jasmine LP 2.5DU at any voltage
other than that specified on the rear of the unit may cause
Connectin
g
to AC Power

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damage that is not covered by Jasmine’s warranty.
Jasmine AC Power Mode:
The 230V mode is suitable for using in 220 ~ 240V voltage
environment.
The 115V mode is suitable for using in 110 ~ 120V voltage
environment.
Break-in and warm-up
Careful listeners will notice that the sound of the Jasmine LP
2.5DU improves steadily after the unit is powered-up. A new
unit will undergo more dramatic changes when power is
applied for the first time. Depending on the resolution of the
system and the attentiveness of the listener, you may find that
the sound continues to improve over the first several weeks of
operation. If the power is disconnected for a period of an hour
or more, the unit will undergo similar but less dramatic
break-in.
When you connect the signal output cable of your turntable to
the input connector of Jasmine LP 2.5DU, Please be sure that the
ground spade of the signal cable also be connected on the
ground terminal of Jasmine LP 2.5DU at same time. Otherwise,
maybe cause continuous noise coming with music.
The output of Jasmine LP 2.5DU can be directly connected to
other pre-amplifier and integrated amplifier. But it can’t be
directly connected to any power amplifier.
Connectin
g
to Turntable
Connectin
g
to Am
p
lifiers

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Operation _______________________
This section describes how to operate the Jasmine LP 2.5DU
Phono Pre-Amplifier.
Please set the correct operation mode according to the phono
cartridge which you are using by the mode selecting switch on
the rear panel.
Notice: Before setting the mode, the power must be switch off
Please refer to your cartridge parameters description and
choose suitable impedance set by impedance selector on the
rear panel. Unsuitable impedance set will distinctly cut down
the performance of the amplifier.
The correct power-on and power-off sequence will lengthen the
life of your HI-FI system.
Power On Sequence
zTurntable --> Phono Pre-Amplifier --> Pre-Amplifier -->
Power Amplifier.
zTurntable--> Phono Pre-Amplifier --> Integrated Amplifier.
Power Off Sequence
zPower Amplifier --> Pre-Amplifier--> Phono
Pre-Amplifier--> Turntable
zIntegrated Amplifier--> Phono Pre-Amplifier--> Turntable
Choosin
g
MM or MC Mode
Choosin
g
a Correct Im
p
edance Parameter
Powerin
g
On & Off Se
q
uence

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Warranty _______________________
Jasmine warrant that Jasmine products shall be free from
defects in materials and workmanship for
One years for parts and labor
The warranty period begins at the date of retail sale by an
authorized Jasmine dealer and is subject to the following
requirements and understandings:
1. This is a non-transferable warranty applicable to the
original purchaser exclusively.
2. The product must not have been modified in any manner
whatsoever, or the warranty is immediately voided.
3. The product must not have been stored in humid
environment; nor subjected to weather, water, or salt spray.
4. During the warranty period Jasmine will repair the product
to working order, or, at Jasmine’s option, replace the
defective equipment with a similar available product, at no
cost to the owner for the labor, materials.
5. Jasmine shall not, under any circumstances, be liable for
any incidental or consequential damages arising from the
loss of property or other damage or losses due to the failure
of a Jasmine product. Jasmine will not pay for loss of use or
inconvenience caused by the failure of a Jasmine product.
Jasmine will not pay for damage caused to other audio
components because of the failure of a Jasmine product
within the limits allowed by State Law.
6. All repairs performed after the warranty period has
expired will be billed to the owner and will carry a 90 day
warranty on parts and labor.
7. The customer is responsible for shipping the unit to
Jasmine.
8. Jasmine product is only warranted in the country of
original sale.

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Specifications _______________________
Input Channel: 2 (Switchable)
Output Channel: 1
Gain @1KHz: MM = 55dB
MC = 70dB
RIAA EQ Distortion: - 0.03 ~ +0.15dB ( 20Hz to 20KHz )
THD: < 0.01 ( 20Hz to 20KHz )
Output Level : 10V (Max)
S/N: MM > 90dB , MC > 85dB
Input Impedance: MM = 47KΩ,
MC = 50/100/250/1KΩselectable
Output Impedance: 15 Ω
Input Capacity: MM/MC = 100PF
Power Consumption: 6 Watt ( MAX)
Size: 185(W) x 205(D) x 65(H) mm / single box
Copyright@ 2010 Jasmine audio
Suite 2502, Duoli Industrial Park,
Meihua Rd.,
Shenzhen, GD,
China 518049
http://www.jasmineaudio.net
Subject to change without notice.