Gamut M250 Podręcznik użytkownika - Strona 7

Przeglądaj online lub pobierz pdf Podręcznik użytkownika dla Wzmacniacz Gamut M250. Gamut M250 10 stron. Mono power amplifier

If both channels are silent, but the blue power lights are on, you can check them in the following way:

Switch off power and wait 10 seconds and then switch it on and listen carefully. There should be two

quiet mechanical clicks coming from the inside of the amplifier.

If not, disconnect the input cables and try again. Now listen closely to the loudspeaker. A small click

should come from the loudspeaker, just after the click from inside the amplifier.

If not, check the loudspeaker cables.

If you hear clicks in the loudspeakers, and still do not get sound, the amplifier is probably OK..

Try exchanging the input cables with another cable. and check that you are sending signal by sending it

into a tape recorder.

If you only get the mechanical click (it comes from the relay closing inside) and you have checked the

loudspeaker cables and the loudspeaker, then you should call your dealer.

If you hear small clicks every second from the loudspeaker, then you have a bad input signal, or a short

circuit on the output, which causes the protection circuit to take action.

Check that the input cable screen is OK and that all plugs are tightly and correctlt connected.

Check the loudspeaker cables. In case you cannot solve the fault by doing the above, call your dealer.

A few useful specifications

Shipping weight is 35 kg.

Dimensions are 164 mm high, 431 mm wide, and 470 mm deep.

Idle power consumption is 90W.

The slow blow mains fuse limits power consumption at 1,150W long-term.

Output power in 8 Ohms resistive load is 250W.

Speaker loads below 1.5 Ohms are not allowed by the protection circuit

Noise is at least 100 dB below 250W in 8 Ohms. This depends on the gain selected, and it is below the

noise from a CD.

Strong external electromagnetic fields can increase the noise level. Use only shielded signal cables.

The balanced XLR input has a 40 kOhm input impedance. The 3-pin XLR socket has Pin 2 as plus, Pin 3

as minus, and Pin 1 as ground. The RCA unbalanced input has a 20 kOhm input impedance.

Sensitivity can be selected internally by your dealer to be 0.775V, 1.55V, 3.1V or 3.9V for full power.

The output for a loudspeaker is single or biwiring, using 4 mm banana plugs, spade lugs or stripped wire.

Service

Most of the parts are on the circuit-board, which can be changed at a low cost, should your amplifier ever

need service.

You can contact your dealer, whom may solve your problems locally, or you can contact us in Denmark.

Please note your dealer's telephone number here: