User Manual

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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 &

1-3 short

2-4 short

JB5 &

1-2 short

2-3 open

Low Output MC

Standard phono

JB3 & 4 JB5 &

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 &

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 &

(current amplifier) 1-2 short

3-4 open

5-6 short

7-8 short

JB5 &

1-2 open

2-3 short

JB3 &

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

Summary of content (2 pages)

PAGE 1
P-75 Jumper Diagram 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 P-75 Jumper Settings High Output MC or MM Output RCA plugs Note: Power supply is not included. Please purchase a suitable supply at your local dealer. The P-75 is a stand-alone phono to line level amplifier.
PAGE 2
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.