Golden Age Project PRE-73 Premier Manual

Golden Age Project Modtager PRE-73 Premier

Læs gratis den danske manual til Golden Age Project PRE-73 Premier (2 sider) i kategorien Modtager. Denne vejledning er vurderet som hjælpsom af 10 personer og har en gennemsnitlig bedømmelse på 4.9 stjerner ud af 5.5 anmeldelser. Har du et spørgsmål om Golden Age Project PRE-73 Premier, eller vil du spørge andre brugere om produktet?

Download PDF

Side 1/2

W W W . G O L D E N A G E P R O J E C T . C O M I

PRE-73 PREMIER

INTRODUCTION

Congratulations on choosing the Golden Age Project PRE-73 PREMIER microphone preampliﬁer!

The PRE-73 PREMIER is a one-channel vintage style microphone-, line- and instrument preampliﬁer. The

signal path uses only discrete components like resistors, capacitors and transistors. The in- and output is

transformer balanced, using two different transformers, each one optimized for its purpose. This is the way

audio components were built before integrated circuits became available.

The circuit used in the PRE-73 PREMIER is similar to the preamp section in the classical 1073 module with

a corresponding sound character that is warm, punchy, sweet and musical. These classic characteristics

have been heard on countless recordings through the years and it is a versatile sound that works very well

on most sound sources and in most genres. The essence of this sound is now available at a surprisingly low

cost, making it available to nearly everyone.

FEATURES

- Vintage Style electronics. No integrated circuits in the signal path.

- Maximum gain in mic mode is 80 dB, enough to handle passive ribbon mics with quiet sound sources.

- Gain switch range is 20 - 80 dB. Line mode switch, gain is reduced by 30 dB in line mode.

- Selectable two position high frequency air eq boost mode, 3 or 6 dB @ 30 kHz.

- Selectable 6 dB/octave high pass ﬁlter at around 80 Hz (HP1) or 200 Hz (HP2).

- 14 dB output pad allowing the user to overdrive the output stage and transformer.

- Switchable impedance in mic mode, 1200 or 300 Ohm, will change the tone of most mics. The input impedance in line mode is 10 kOhm.

- Switchable phantom power and absolute phase.

- A high-impedance instrument input for any sound module, electric guitar or bass.

- A simple but effective 4-step LED output level meter.

- The output level control makes it possible to make ﬁne gain adjustments and also to overload the main gain stage(s) for more character.

- Combo XLR/TRS input jack and separate output XLR and TRS jacks for ﬂexible connections.

- Insert jack for inserting EQ´s and other units.

- Selectable 600 Ohm output termination.

- Classic style knobs and buttons.

- Prepared for mounting one or two units in the UNITE PREMIER rack kit. It can also be mounted in one of the other UNITE rack kits and combined

with the red and black Golden Age Project products.

- Connector free internal wiring, all connections except the ones to the gain switch

are soldered for the purest signal and most longterm stable signal path.

- UK made Carnhill input and line output transformers.

- Polystyrene capacitors in the ampliﬁer circuits.

- Tantalum capacitors in the signal path.

- Beefed up power supply.

- Sturdy toggle switches with gold plated contacts.

- External power supply to avoid interaction with the audio circuits and transformers.

- A solid build quality that will last many years of normal use.

W W W . G O L D E N A G E P R O J E C T . C O M II

CIRCUIT DESCRIPTION

The signal ﬁrst enters the input trans-

former. The primary of the transformer

has two windings that are either con-

nected in series or in parallel which

results in an input impedance of either

1200 Ohm or 300 Ohm in MIC mode.

A resistive balanced -30 dB pad is

inserted before the transformer in LINE

mode.

The transformer is followed by two input gain stages. For gains

up to 50 dB, only one of them is being used. For gains above 50

dB, the second gain stage is inserted in the signal path. Both gain

stages uses only three transistors each.

The signal then goes to the insert jack and from there to the

output level potentiometer and then to the output stage. This stage

again only uses three transistors, the last one in the chain is a

hefty 2N3055 power transistor run in class-A mode, driving the

output transformer.

So, all in all, the complete signal chain contains a maximum of

only nine active elements. Compare that to the big number of tran-

sistors that are usually used in one single integrated circuit!

MODERN VERSUS OLD

It is true that there are some great IC´s available today that

achieves very low levels of static and dynamic distortion. The

simple circuits that the PRE-73 PREMIER uses, and even more so

the transformers, cannot match the low distortion speciﬁcations of

modern IC´s.

It is the distortion components that imparts a sound character

to the audio signal and, if the distortion components are of the

right type, this is a good thing since it makes the recorded voice

or instrument sound “better”, more musical, more pleasing to

the ear. This is one reason why vintage style units are so popular

today.

This is not to suggest that modern, transparent sounding audio

circuits is a bad thing, sometimes they are prefered over colored

ones. It´s all about taste and it depends on the genre. For most

modern music styles, color and character is deﬁnitely a good

thing. And doesn´t it feel good to use audio components built

according to the old, minimalistic approach where one can follow

the signal from one discrete component to another?

USING THE PRE-73 PREMIER

Using a preampliﬁer is not rocket science. Find some points below

to help you in getting the maximum out of the PRE-73 PREMIER:

- Connect the cable from the power supply to the 24V AC connec-

tor on the back panel of the PRE-73 PREMIER. Power on the unit

with the POWER switch on the front panel.

- Connect your Mic or Line input source to the input XLR/TRS

combo jack on the back panel.

- Select MIC or LINE mode by the MIC/LINE switch.

- Engage one of the positions of the High Pass ﬁlter if you want

to roll off the lower frequency range. Set the switch in the center

position to remove the high pass ﬁlter from the signal path.

- Engage one of the two positions of the AIR eq boost if you want

to add some level in the upper frequency range. The boost is cen-

tered at around 30 kHz. The switch center position = OFF.

- If you want the smallest amount of coloration, always set the

OUTPUT level potentiometer at or close to maximum and adjust

the output level with the stepped GAIN switch.

- If you want more character, turn the OUTPUT level potentio-

meter counterclockwise and increase the gain with the GAIN

switch. This will drive the input gain stage(s) harder and provoke

more character from them.

- You can also overdrive the output stage and the output trans-

former for even more character by engaging the OUTPUT PAD.

It will lower the level after the output transformer with about 14

dB, the idea is to compensate for that by driving the output stage

and transformer harder, i.e. increase GAIN and/or OUTPUT by the

same amount.

Please note that the output pad lowers the level with 14 dB only

when the internal termination jumber (JP1, see info below) is

engaged, the reason is that it is designed to work into a 600 Ohm

load.

- Instruments can be connected to the TS input jack on the front

panel, it has an input impedance of about 100 kOhm. Press the

DI switch to engage this input. A source at the back can remain

connected.

- Engage 48 V phantom power for any mic that needs it. It is a

good procedure to always disengage the phantom power and wait

for about 10 seconds before unplugging the mic.

- When the LOW-Z switch is engaged, the input impedance of the

input in MIC mode drops from 1200 Ohms to 300 Ohms. This will

change the tone of most mics and will give you one more sound-

shaping option. It will also increase the signal level.

- The phase switch simply reverses the phase by reversing the

wires from the secondary winding of the output transformer.

Reversing the phase of a signal is useful in many situations, one

example is phase reversing the lower mic of a snare drum to

make it sum in phase with the upper mic.

- There is an unbalanced insert jack located on the back panel

where you can insert equalizers and other external effect units. It

has an operating level of about -10 dbu to -18 dBu.

Send is on “tip” and return is on “ring”.

- The output transformer used in the PRE-73 PREMIER is made

for having an ideal load of about 600 Ohm. The input impedance of

most modern units is 10 kOhm or more.

The PRE-73 PREMIER therefore has a 600 Ohm output termination

resistor that is engaged by the jumper (JP1) located just behind

the XLR output jack. The termination reistor will lower the ouput

level slightly and also affect the upper frequency range,

Remove the jumper if the PRE-73 PREMIER feed a unit with a 600

Ohm input impedance.

WARRANTY

The PRE-73 PREMIER is built to last. But as in any electronic

device, components can break down.

There is a 1,0 A, slow blow fuse located inside the unit, close to the

24 V AC input jack. If the unit dies, check this fues. If it has blown,

replace it with a new one.

You can also try another 24 V AC adaptor if you have one available

If this doesn´t help, or if the unit has another problem, it will need

repair and you should then contact the reseller where you bought

the unit.

The warranty period is decided by the Distributor for your country.

The Distributor will support Golden Age Project resellers and end

users with repairs and spare parts.

REGISTRATION

You are welcome to register your unit at our website:

www.goldenageproject.com

You are also welcome to visit: www.goldenagepremier.com

---------------------------

Thank you for choosing the PRE-73 PREMIER!

I hope it will serve you well and that it will help you in

making many great sounding recordings.

Bo Medin

Vintage character for modern ideas!

Produkt Specifikationer

Mærke:	Golden Age Project
Kategori:	Modtager
Model:	PRE-73 Premier

Har du brug for hjælp?

Hvis du har brug for hjælp til Golden Age Project PRE-73 Premier stil et spørgsmål nedenfor, og andre brugere vil svare dig

Dit navn*

Din email*

Skriv dit spørgsmål her

Modtager Golden Age Project Manualer

Golden Age Project PRE-73 JR Manual

14 August 2024

Golden Age Project PRE-73 Premier Manual

18 Juli 2024

Golden Age Project PRE-573 MKIII Manual

27 Maj 2023

Golden Age Project PREQ-73 Premier Manual

22 April 2023

Golden Age Project PRE-573 Premier 500 Series 1073-Style Microphone Preamp Manual

4 November 2022

Golden Age Project PRE-73 DLX PREMIER Manual

29 Oktober 2022

Golden Age Project PRE-73 MKIII Manual

15 Oktober 2022

Modtager Manualer

Nyeste Modtager Manualer

MuxLab 500553 Manual

15 September 2025

Atlona AT-HDR-CAT-4ED Manual

15 September 2025

Ibiza Sound SA2000 Manual

15 September 2025

Sony HCD-SH2000 Manual

15 September 2025

AMX NMX-ENC-N2612S Manual

14 September 2025

AMX UDM-RX02N Manual

14 September 2025

AMX AVB-RX-DXLINK-HDMI Manual

14 September 2025

Perreaux Silhouette SXH2 Manual

13 September 2025

Perreaux Silhouette SXP2 Manual

13 September 2025

Perreaux Silhouette SX25i Manual

12 September 2025