VELLEMAN 8040 User Manual
High-end mono mosfet power Amplifier
High-end mono mosfet vermogen versterker.
Amplificateur mono de puisance haut de gamme
High-End mono mosfet leistungsverstärker.
Operating instructions
8040
Mosfet Power Amplifier
Gebruiksaanwijzing
Mode d’emploi
On
Temp. error
Clip/Auto power
Bedienungsanleitung
8040
ENGLISH .....................4
NEDERLANDS ..........10
FRANCAIS ................16
DEUTSCH ..................22
Set– up example
2
Set– up example
3
Warnings and Contents
Thank you for purchasing this Velleman High-end mono mosfet power amplifier.
Please read the instructions carefully so that you can use the unit correctly.
WARNING NOTICES
CHECK WHETHER THE MAINS VOLTAGE IS CORRECT FOR THE UNIT.
IN ORDER TO AVOID ELECTRIC SHOCKS,
THE POWER-CORD MUST BE REMOVED BEFORE OPENING THE UNIT .
THE STANDBY SWITCH IS IN THE SECONDARY POWER SUPPLY CIRCUIT.
THIS MEANS THAT THE UNIT IS NOT COMPLETELY ISOLATED FROM
MAINS WHEN THE UNIT IS IN STANBY.
!
About the power cord:
It is possible that in certain countries or regions, the mains plug is different to the one
supplied. In such a case a different plug can be fitted, but be careful to ensure that the
blue wire is connected to neutral, the brown to live, and the yellow/green to earth. Or ask
your dealer for a suitable power cord.
AC Power :
Please check the AC Power indication at the back of the unit.
For 100Vac to 120Vac, use the 115Vac setting.
For 220Vac to 240Vac, use the 230Vac setting.
GUARANTEE
This product is guaranteed against defects in components and construction from the moment it is
purchased and for a period of ONE YEAR starting from the date of sale.
This guarantee is only valid if the unit is submitted together with the original purchase invoice.
VELLEMAN Ltd limits its responsibility to the reparation of defects or, as VELLEMAN Ltd deems
necessary, to the replacement or reparation of defective components. Costs and risks connected to
the transport, removal or placement of the product, or any other costs directly or indirectly connected
to the repair, will not be reimbursed by VELLEMAN Ltd. VELLEMAN Ltd will not be held responsible
for any damages caused by the malfunctioning of a unit.
IMPORTANT: Do not throw away the original packaging. Warranty will be void if the unit
is returned in another packaging than the original.
CONTENTS
FEATURES .................................................................................................................................. 5
SPECIFICATIONS ...........................................................................................................6
CONNECTION .............................................................................................................................7
OPERATION ...................................................................................................................8
TROUBLESHOOTING ....................................................................................................9
4
Features
FEATURES
þ No compromise high-end design.
þ Ideal to place next to the speaker (short wires to the speaker).
þ Auto-power on possibility when input signal is sensed.
þ Auto-standby function when no input signal is present.
þ Exclusive, high finish, solid aluminum enclosure.
þ High quality D-MOS output stage.
þ Total of 40.000µF power supply capacitors.
þ Relay–less speaker DC protection.
þ Real Clipping distortion indication.
þ Power output level indication with backlight.
þ Pass through output to drive bi-wired speakers using separate amps.
þ Double overheating protection with LED indication.
þ High grade speaker and input connections.
þ Overload protection.
5
Specifications
SPECIFICATIONS*
Inputs :
Input sensitivity for maximum output : ................. 0dBm (0.775Vrms)
Input impedance : ................................................ 15KO
Minimum auto switch on voltage : ........................ 5mVrms
Output :
Maximum RMS output power 4O : ....................... 90W
Maximum RMS output power 8O : ....................... 70W
Dynamic output power in 4O : ............................125W
Minimum load impedance : .................................. 4O
Damping factor / ref. 8ohm 100Hz : ..................... > 1000
Audio specs :
Signal to noise ratio (A-weighted ref. max. out) : . >105dB
Total harmonic distortion : ...................................0.003% @1KHz ref 1W
Frequency response : .......................................... 9Hz to 120KHz (-3dB) in 50W
Power requirements (depends on version) :
AC power : ........................................................... 115Vac (110V to 120V)
AC power : ............................................................ 230Vac (220V to 240V)
Consumption : ..................................................... 100W max.
Dimensions : ........................................................ 290x165x68mm (11.4”x6.5”x2.7”)
Weight (net) : ....................................................... 3.4Kg (7.5Lbs)
*Modifications and typographical errors reserved
Output graphs
6
© Velleman
Connection
CONNECTION
Place the amplifier in a well ventilated area. Never operate the amplifier inside
a non ventilated area. Connect the amplifier input to the output of an appropriate
pre-amplifier or control amplifier (e.g. our 4100, 8020, 8021). Use good quality audio
leads. Respect the Left and Right channels in a stereo configuration. Connect the
power-cord to the AC power connector. Check for correct mains voltage.
Turn off the Power before
making any connection !
1. Mains power switch. Use this switch
if the unit is not used for a longer
period.
2. AC Power indication.
3. AC Power and fuse holder, replace
fuse only with indicated ratings!
4. Speaker output connectors, use
good quality speaker wires of 4mm
or higher. Respect the speakers
polarity.
5. Signal input connector. Use good
quality cords for connection with
pre- or control amplifier.
6. Signal bypass output. Use this
output if separate amplifiers and
speakers are used for low and high
frequencies.
See setup examples pages
F The nominal input signal is 0.775V (0dB) for maximum output.
2 and 3
7
Operation
OPERATION
CAUTION: Before turning on the power amplifier(s) turn down the volume
control.
1. Standby/Auto button and
indication. Press this button briefly
to turn on the unit or to set the unit
in standby. Keep this button
8040
Mosfet Power Amplifier
pressed to set the unit in auto
power mode (*). The Auto power
LED will light up (see 4).
On
Temp. error
Clip/Auto power
2. On LED. Indicates when the unit is
turned on.
3. Temperature error indication.
Lights up if the amplifiers
temperature is too high. The
sound will also be muted at that
time. The sound will come back if
the temperature has dropped to a
suitable level.
4. Real clipping indication when the
unit is operating. For best sound
quality observe that this LED is not
constantly on. Auto power
indication during standby.
5. Output level indication with
backlight.
(*) In Auto power mode the unit will turn itself on as soon as an input signal (min 5mV) is sensed.
This is a very convenient function if the amplifier is placed next to the speakers. The amplifier will go
back to “auto” standby mode If no input signal is sensed for about 15min . If during auto power
mode the unit is turned on or off manually, the auto power function will be disabled.
8
Troubleshooting
TROUBLESHOOTING
Symptom
No sound coming from the speakers.
Auto power memory is erased.
Hum or noise is coming from the
speaker.
The button is not reacting and/or no
LED indication is functioning.
Possible cause
The power amplifier is turned off.
Bypass is used as input.
A power failure has occurred. The
power-cord has been disconnected.
The amplifier has been turned off
manually.
To make sure the amplifier is the
source of hum, disconnect all input
leads. Use good quality audio leads.
Check the AC Power earth connection. The power amplifier is too close
to other magnetic field like a power
adapter or other AC operated unit.
Static electricity or lightning can
cause malfunction of the unit.
Disconnect the power-cord for about
10 seconds, this will reset the internal
processor. Check the mains fuse,
replace only with indicated rating. A
spare fuse is located in the fuse
holder.
9
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