Dynavector P-75 User Manual

P-75 power supply requirements

AC to DC power adaptor 12V 500mA DC
Two pin adaptor centre negative outer positive
Outer Diameter 5.5mm
Inner Diameter 2.1mm

Note: Power supply is not included.

Please purchase a suitable supply at your local dealer.

Specifications

The P-75 is a stand-alone phono to line level amplifier. It can operate with the following
cartridge types:

Cartridge Type Input Sensitivity Gain Loading

Low Output Moving Coil 0.2mV (200µV) or 60 & 63dB 30, 100, 470 ohms
Standard phono stage 0.15mV (150µV)

Low Output MC Zero ohms
Phono Enhancer*

High Output Moving Coil 2mV 40dB 47k (47,000) ohms
Moving Magnet
Moving Iron

*Input sensitivity and gain is determined mainly by the cartridge internal resistance.
Three resistance/gain adjustments available.

Always turn off power to the audio system (including power to the P-75) when altering
jumpers or settings inside the P-75.

NOTE: Under no circumstances should a signal generator be used with the phono enhancer
circuit, as any excessive current from the generator may damage the P-75.

All the above adjustments are easily made by the user. No soldering or extra components
are required.

Standard Settings

When delivered from the factory, the P-75 has the following Standard Settings:

Low output moving coil

100 ohm 63 db gain

P-75 Jumper Diagram P-75 Jumper Settings

High Output MC JB1 & 2

or MM 1-2 open

3-4 open
5-6 short
7-8 short

JB3 &

4

1-3 short
2-4 short

JB5 &

6

1-2 short
2-3 open

Low Output MC
Standard phono

JB3 & 4 JB5 &

6

60dB gain (normal) 1-3 short 1-2 open

2-4 short 2-3 short

63dB gain (high) 1-3 open

2-4 short

JB1 &

2

Cartridge loading

470 ohm 100 ohm 30 ohm
1-2 open open open
3-4 short short short
5-6 open short short
7-8 open open short

Output

RCA plugs

Input

RCA plugs

Rear Panel

Low Output MC
Phono enhancer JB1 &

2

(current amplifier) 1-2 short

3-4 open
5-6 short
7-8 short

JB5 &

6

1-2 open
2-3 short

JB3 &

4

Low resistance coil 1-3 open

(approx 4 – 10 ohms*)

2-4 short

Med resistance coil 1-3 short

(approx 10 – 20 ohms*)

2-4 short

High resistance coil 1-3 short

(approx 20 – 50 ohms*)

2-4 open

* resistance of cartridge coil obtained from manufacturer's specifications.

Key open = remove jumper short = fit jumper

For more information visit

www.dynavector.com

vector P-75

& phono enhancer

The P-75 has a unique power supply that runs at over 1/4MHz.
It takes the

low grade single voltage DC supply from the ac
adapter and converts it to the dual high voltages required for true
professional quality audio reproduction. The operating frequency
is over 12 times higher than the top of the audio band and it
incorporates super low noise wideband regulators in its output
stage to give ultra low noise supply rails.

The internal P-75 power supply is totally self contained and stores
many times the maximum possible energy requirements for the
phono amplifiers. This means that the quality or size of the external
ac adaptor is irrelevant. Increasing the capacity of the external
supply will

make no difference to the quality of the sound.

The P-75 incorporates the unique current amplifier invented by
Dr

Tominari of Dynavector Systems Ltd., Japan, called a Phono

Enhancer.

Note:

The P-75 supply requires a higher peak current to start up
and so we do not recommend using an adaptor of less than
500mA.

The P-75 does not have any mains frequency or other low
frequency components in the power supply and so hum problems
that plague conventional phono amplifiers are eliminated.

An earth terminal is provided on the rear panel that will allow the
me tal ch ass is to be con nec ted to ea rth if re qui red .

While the P-75 itself does not generate any hum, the tone arm
and interconnect cables may act as antennae and pick-up some
hum. This is normally removed by running an earth wire to the
pre amplifier ground.

In some applications, the P-75 may need to be earthed.

IMPORTANT SAFETY INSTRUCTIONS

Read Instructions

All the safety and operating instructions should be read before using
this product.

Retain Instructions

The safety and operating instructions should be

retained for future

reference

.

Heed warnings

All wa

rnings on the product and in the operating instructions should be

adhered to

.

Follow instructions

Al l o per a tin g a nd us e i nst r u cti o ns sh o uld b e

fo llo wed.

Cleaning

Unplug the product from the wall outlet before cleaning.

Do not use

li qu id or aerosol cl ea ne rs

. Us e a damp c lo th fo r c leaning.

Power sources

This product should be operated only from the type of power source
indicated on the marking label. If you are not sure of the type of powe

r

supply, consult your dealer

.

Servicing

Refer all servicing to qualified service personnel.

Warranty

Dyna

vector manufactures its products to very high standards and we

are confident our products will perform well.

Accordingly, we warrant

the Dyna

vector P-75 against manufacturing defects in material and

workmanship to the original owner,

for a period of one year from the

original date of purchase. This warranty does not

extend to damage

caused by

improper use/installa tion, faulty ancillary equipment,

modifications, unauthorised repair, shipping damage or loss, abuse

,

accidents, use on improper

voltage/current, lightning or other acts of

God, normal

wear and tear, commercial use, or puchases from

unauthorised dealers. Proof of purchase as

evidence the unit was

purchased from an authorised dealer within the

warranty period may
be required for warranty service. Do not return the product without first
contacting your dealer or Dyna

vector. This warranty is non-transferable.

www.dynavector.com

Designed and manufactured by

Dynavector Australia and New Zealand / Aotearoa

4/05