Electro-Voice PSX-600 Service manual

PSX600

STEREO POWERED MIXER

SERVICE MANUAL

IMPORTANT SAFETY INSTRUCTIONS

The lightning flash with arrowhead symbol, within an equi­lateral triangle is intended to alert the user to the presence
of uninsulated “dangerous voltage” within the product’s
enclosure that may be of sufficient magnitude to constitute
a risk of electric shock to persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintance (servicing) instructions in the
literature accompanying the appliance.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a damp cloth.

7. Do not block any of the ventilation openings.
Install in accordance with the manufactures instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus that produce heat.

9. Only use attachments/accessories specified by the manufacturer.

10. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been
damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has
been dropped.

For US and CANADA only:

Do not defeat the safety purpose of the grounding-type plug. A grounding type plug has two blades and a third grounding prong.
The wide blade or the third prong are provided for your safety. When the provided plug does not fit into your outlet, consult an
electrican for replacement of the absolete outlet.

IMPORTANT SERVICE INSTRUCTIONS

CAUTION: These servicing instructions are for use by qualified personnel only. To reduce the

risk of electric shock, do not perform any servicing other than that contained in the
Operating Instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.

1. Security regulations as stated in the EN 60065 (VDE 0860 / IEC 65) and the CSA E65 - 94 have to be obeyed when
servicing the appliance.

2. Use of a mains separator transformer is mandatory during maintenance while the appliance is opened, needs to be
operated and is connected to the mains

3. Switch off the power before retrofitting any extensions, changing the mains voltage or the output voltage.

4. The minimum distance between parts carrying mains voltage and any accessible metal piece (metal enclosure),
respectively between the mains poles has to be 3 mm and needs to be minded at all times.
The minimum distance between parts carrying mains voltage and any switches or breakers that are not connected
to the mains (secondary parts) has to be 6 mm and needs to be minded at all times.

5. Replacing special components that are marked in the circuit diagram using the security symbol (Note) is only permissible
when using original parts.

6. Altering the circuitry without prior consent or advice is not legitimate.

7. Any work security regulations that are applicable at the location where the appliance is being serviced have to be strictly
obeyed. This applies also to any regulations about the work place itself.

8. All instructions concerning the handling of MOS - circuits have to be observed.

Note:

SAFETY COMPONENT (HAS TO BE REPLACED WITH ORIGINAL PART ONLY)

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WARRANTY (Limited)

Electro-Voice products are guaranteed against malfunction due to defects in materials or workmanship for a specified
period, as noted in the individual product-line statement(s) below, or in the individual product data sheet or owner’s
manual, beginning with the date of original purchase. If such malfunction occurs during the specified period, the
product will be repaired or replaced (at our option) without charge. The product will be returned to the customer
prepaid.

Exclusions and Limitations: The Limited Warranty does not apply to: (a) exterior finish or appearance; (b) certain
specific items described in the individual product-line statement(s) below, or in the individual product data sheet or
owner’s manual; (c) Malfunction resulting from use or operation of the product other than as specified in the product
data sheet or owner’s manual; (d): malfunction resulting from misuse or abuse of the product; or (e): malfunction
occurring at any time after repairs have been made to the product by anyone other than Electro-Voice or any of its
authorized service representatives.

Obtaining Warranty Service: To obtain warranty service, a customer must deliver the product, prepaid, to
Electro-Voice or any of its authorized service representatives together with proof of purchase of the product in the
form of a bill of sale or receipted invoice. A list of authorized service representatives is available from Electro-Voice
at 600 Cecil Street, Buchanan, MI 49107 (616-695-6831) and/or Electro-Voice West at 9130 Glenoaks Boulevard,
Sun Valley, CA 91532 (213-875-1900).

Incidental and Consequential Damages Excluded: Product repair or replacement and return to the customer are
the only remedies provided to the customer. Electro-Voice shall not be liable for any incidental or consequential
damages including, without limitation, injury to persons or property or loss of use. Some states do not allow the
exclusion or limitation of incidental or consequential damages so the above limitation or exclusion may not apply to
you. Other Rights : This warranty gives you specific legal rights, and you may have other rights which vary from state
to state.

Electro-Voice Electronics are guaranteed against malfunction due to defects in materials or workmanship for a
period of three (3) years from the date of original purchase. Additional details are included in the Uniform Limited
Warranty Statement.

Specifications subject to change without notice.

600 Cecil Street, Buchanan, Michigan 49107, Phone [phone], Fax: [phone]

TELEX/EVI Audio Canada, 705 Progress Ave. Unit 46 Toronto, Onatario, M1H 2x1, Canada , Phone: [phone], Fax: [phone]
TELEX Communications A.G., Keltenstrasse 11, CH-2563 IPSACH, Switzerland, Phone: [phone], Fax: [phone]
EVI Audio Deutschland GmbH, Hirschberger Ring 45, D-94315, Straubing, Germany, Phone: [phone], Fax: [phone]
EVI Audio France S.A., Parc de Courcerin-Allee Lech Walesa, Lognes, f-77185 Marne La Vallee, France, Phone: [phone], Fax: [phone]
EVI Audio Japan Ltd., 2-5-60 Izumi, Suginami-ku, Tokyo, Japan 168, Phone: [phone], Fax: [phone]
EVI Audio (Aust.) Pty., Unit 24, Block C, Slough Business Park, Slough Ave., Silverwater, N.S.W 2141, Australia, Phone [phone],
Fax: [phone]
EVI Audio (Hong Kong) Limited, Unit E & F, 21 /F., Luk Hop Industrial Bldg., 8 Luk Hop St., San Po Kong, Kowloon, Hong Kong, Phone: [phone],
Fax: [phone]

Technical Specifications PSX600 Mixing desk in rated condition, Unity Gain ( MIC Gain 20 dB ), all faders position 0 dB, all pots in mid position, Master fader + 6dB,
amplifier rated output power into 8 ohms, one channel driven, unless otherwise specified.

Maximum Midband Output Power, 1 kHz, THD 1% Input Impedances
into 4  2 x 340 W MIC
into 8  2 x 200 W 2 Track Return
Rated Output Power, 20 Hz ... 20 kHz, THD 0.2%
into 4  2 x 300 W
into 8  2 x 150 W Record Send

Maximum Output Voltage of power amplifier, no load
THD at 1kHz, MBW=80kHz

MIC input to Main L/R output, +16 dBu < 0.006%
Power amplifier input to Speaker L/R output

DIM 30, power amplifier
IMD-SMPTE, power amplifier, 60Hz, 7 kHz < 0.2%
Frequency Response, -3dB ref. 1kHz

Any input to any Mixer output 15Hz ... 60kHz
Any input to Speaker L/R output 30Hz ... 40kHz
Crosstalk, 1kHz
Fader and AUX-Send attenuation > 80 dB MID Peaking ± 12 dB / 2.4 kHz
Channel to channel > 70 dB HI Shelving ± 15 dB / 12 kHz

CMRR, MIC input, 1kHz
Input Sensitivity, all level controls in max. position Phantom Power, all MIC inputs +24 Vdc

MIC input -74 dBu (155 µV)
LINE Input (Mono) -54 dBu (1.55 mV)
LINE Input (Stereo) -34 dBu (15.5 mV)
Power Amplifier Input +6 dBu (1.55 V)
Maximum Level, mixing desk
MIC inputs + 11 dBu
Line inputs + 30 dBu
All other inputs + 20 dBu Footswitch FS11 110 693
Record Send output + 14 dBu
All other outputs + 20 dBu
All other outputs + 20 dBu

43 Vrms Phones

< 0.08% Noise, Channel inputs to Main L/R outputs, A-weighted
< 0.03% Master fader down -90 dBu

> 80 dB Master EQ, 2x7-band, Stereo ± 10 dB

All other inputs

Output Impedances

All other outputs
Equivalent Input Noise, MIC Input, A-weighted, 150 Ω

Master fader 0 dB, Channel fader down -89 dBu
Master fader 0 dB, Channel fader 0 dB, Channel gain unity -83 dBu

Signal/Noise-Ratio, power amplifier, A-weighted 105 dB
Equalization

LO Shelving ± 15 dB / 60 Hz

Power Requirements, factory preset, 50Hz....60Hz 120V

Power Consumption at 1/8 maximum output power, 4 Ω
Dimensions, (WxHxD), mm
Weight, including lid

Optional

455,5 x 175,8 x 340,6

1.8 kΩ
10 kΩ

> 15 kΩ

1 kΩ
47 Ω
75 Ω

-130 dBu

450 W

13 kg

PSX600_spec.doc

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Service Instruction

Product: PSX 600
Title: Alteration of signal routing: Mono-Output-Signal from post-master-fader

to pre-master-fader

To do this alteration, there are to fit 2 resistors and there are to cut one track and to reconnect two
solder pads.

1. Disconnect the mains voltage

2. Disassemble the mixing console from the bottom chassis ( = power amp & power supply )

3. There is no need to remove the pc-boards from the front panel. The alteration can made from the

back side of the pc-board.

4. Attached you will find a small spot of the drawing of the tracks on the back side of the master

pcb 81343B. There we have marked the position of two resistors: R206 and R207 ( values: 15
kohm ). You have to fit these two resistors from the back side of the pcb.

5. Now you have to reroute the signal path. Beside the resistors R218/219 we have marked with an

arrow a piece of track. These track you have to cut. For the connection marked “SOLDER” you
have to solder a short piece of wire between the two solder pads. For cutting use a sharp knife or
a small milling cutter.

6. Re-assemble the unit.

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