User Manual velleman VM100 200W Power Amplifier

User Manual velleman VM100 
200W Power Amplifier

Thank you for purchasing this module. Please read the instructions carefully to ensure correct and safe use of this device.

READ THE OPERATING INSTRUCTIONS IN THIS USER’S GUIDE CAREFULLY.

SPECIFICATIONS & FEATURES

FEATURES

Excellent value for money
Full discrete design using Epitaxial Darlington transistors
DC supply circuit on board with LED indication
Ideal for active speaker system or sub woofer, guitar amp, home theatre systems, instruments amp….
Comes complete, adjusted and tested
Overload and short circuit protection

SPECIFICATIONS

200W music power @ 4 ohm load
100Wrms power @ 4 ohm load
70Wrms power @ 8 ohm load
Distortion: 0.02% @ 1KHz/10W
Damping factor: >800
Frequency response: 3Hz to 200KHz (-3dB)
Sensitivity: 0.6Vrms
Signal to noise ratio: 115dB
Power supply: 2 X 25 – 30vac / 100 – 120VA
PCB dimensions: 107x62mm (aprx.)
recommended power transformer:
⇒ 230VAC input, 2 x 30VAC output type: 1230
⇒ 115 / 230VAC input, 2 x 25VAC output type : TR8040 (output power reduced by +/- 15%)

Wiring

Use a 2 x 25 to 30Vac / 100 – 120VA transformer.
Connect the transformer to the AC power connections of the PCB.
The Velleman transformer colour scheme is specified on the pcb.

* Careful : Other brands may feature a different scheme !

Y: yellow, R: red, B: blue, G: grey.

* Do not change the BIAS-adjust trimmer!

Make sure to put a 1A T (slow-blow) fuse in series with the primary winding of the transformer (see diagram).

* ADVICE: For safe first-time testing insert a 60W light bulb in series with the AC power and the transformer. If the light bulb lights up continuously, disconnect the transformer and check all your wiring and assembly. Reconnect the power supply. If the lamp remains off, everything is OK, replace the light bulb with a fuse.

If the TR8040 transformer is used there is a selection of primary AC voltage :

120Vac: black / brown.
230Vac: black/orange.

* IMPORTANT: Insulate the wire that is not being used.
* NOTE: Two amplifiers and two transformers are required for stereo. Never attempt to run two amplifiers from a single transformer!

CONNECTION

Connection:

The input (GND and in) can be connected directly to an audio source (pre-amp or mixing panel) or a volume control (potentiometer) can be used (see diagram).
Connect the speaker (4 ohm or higher) between the connections LS+ and GND.

* CAUTION: VOLTAGES OF ABOUT 80V ARE PRESENT. MAKE SURE TO USE A SUITABLE ENCLOSURE AND ISOLATE ALL AC CONNECTIONS

Belgium [Head office] Velleman Components +32(0)9 384 36 11