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P75 mk4 Power Supply Requirements

AC to DC power adaptor 12VDC +/­15% 350mA (min)

Two pin connector centre 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 P75 mk4 is a stand­alone phono to line level amplifier. It can operate with almost
any cartridge as follows:

Cartridge type

Input sensitivity Gain

Loading Ω (ohms)

Low Output Moving Coil

0.2mV (200µV)

60 & 63dB 30, 60, 100, 220, 470*

Suggested minimum

0.15mV (150µV)

Shunt Capacitance (pF)

660, 760, 860*

Medium Output MC/MM

1.0mV

56dB

470 Ω

High Output Moving Coil

2.0mV

40 & 46dB 47k (47,000) Ω

or Moving Magnet,
or Moving Iron
Shunt Capacitance (pF)

100, 200, 300*

* Some other R and C loading values available including:

User/Custom Loading:

User can fit any custom R or C loading value.

Low Output MC Phono Enhancer

Specs vary according to cartridge make and model. Output level determined mainly by
the cartridge internal DC coil resistance. Three resistance/gain adjustments available.
PE Mode only works with low output MC cartridges. It may not suit all brands or
models. Results obtained depend on the quality of the cartridge's magnetic circuit.
Unsure? Try it out, it can do no harm.

Warning:

Under no circumstances should a signal generator be used with the phono

enhancer circuit, as excessive current from the generator may damage the P75.
Always turn off power to the audio system (including power to the P75) when altering
jumpers or settings inside the P75.

Summary of Contents for P75 mk4

Page 1: ...phono preamplifier and phono enhancer instructions and specifications Dynavector P75 mk4 ...

Page 2: ... voltage current lightning or other acts of God normal wear and tear commercial use or purchases 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 Dynavector distributor This warranty is non transferable P75 mk4 Pow...

Page 3: ...g Magnet or Moving Iron Shunt Capacitance pF 100 200 300 Some other R and C loading values available including User Custom Loading User can fit any custom R or C loading value Low Output MC Phono Enhancer Specs vary according to cartridge make and model Output level determined mainly by the cartridge internal DC coil resistance Three resistance gain adjustments available PE Mode only works with lo...

Page 4: ...anging the position of jumpers on the Jumper Blocks The layout of the jumpers is shown below Standard Default Settings When delivered from the factory the P75 is set to the following standard setting Low output moving coil 100 ohm 63dB gain Shown below This setting is perfect for about 95 of low output moving coil cartridges Tip place unused spare jumpers half on just connected to one pin This pre...

Page 5: ...63dB gain As per the jumper position shown below Left channel shown Right channel is identical Medium output 1mV MC Use Low output MC standard phono mode above Set gain to 56dB by fitting all three jumpers to JB3 JB4 Set loading to 470 Ω via JB1 JB2 See above for jumper locations Additional input capacitance can be added via JB10 and JB11 For MC cartridges this is not required and will have little...

Page 6: ...e R 6 Ω ohms Recommended load resistance 30 Ω Ignore this in PE Mode The DC coil resistance for the DV XX2 mkII is 6 ohms therefore in PE mode set JB3 4 for a low resistance coil the 4 10 Ω range See www dynavector com for complete Dynavector cartridge specifications Low output MC Phono Enhancer Mode PE Mode The diagram below shows the available settings for using the P75 in the special Phono Enha...

Page 7: ...and and beyond This allows all cartridge types to perform at their best It also has far superior rejection of common mode noise than other phono amplifiers making it less susceptible to interference and noise Analog playback systems can produce amazing lifelike sound quality They do need a little more care and attention and small changes can make a big difference It may seem strange in this online...

Page 8: ...express our great appreciation to the late Mr John Bevan Ford of New Zealand Aotearoa contemporary Maori artist and music devotee for his generous assistance with the appearance and functional design of our Dynavector products While his insight will be sorely missed we shall continue to follow his clear guiding principles Haere ra John Dynavector Systems Australia Pty Ltd 2017 P75 mk4 manual rev 1...

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