valutazioni - 2, GPA: 4.5
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Facilità d'uso
5. EF86 MODE This switch re-configures the EF86 valve from Pentode mode to Triode mode. Triode mode will give a lower gain tone with higher headroom. Pentode mode is the original mode and has a very sweet high gain tone with not very much headroom. 4 CHANNEL II – TOP BOOST PREAMP 6. INPUT JACK SOCKETS Guitar input jacks into the Top Boost channel. These are wired in the traditional way that gives a 6dB difference in gain between them. The socket nearer the front of the amp is the higher gain, the one nearest the rear of the chassis is 6dB quieter. 7. VOLUME CONTROL Controls the volume level of the Top Boost channel. 8. TREBLE CONTROL Part of the 1963 Top Boost circuit, and strangely enough; this controls the treble spectrum of the channel! 9. BASS CONTROL Again part of the 1963 Top Boost circuit—and by the way, controls the bass spectrum. NOTE ! For newcomers to using a classic VOX, the Top Boost bass & treble controls are extremely interactive and small adjustments can make quite a radical change to the tone, as both controls have a big influence on how the mid-range reacts. Our suggestion is to start off with both the Bass & Treble controls in the mid-way position, and experiment from there. And another thing, maximum treble can be very, very bright! 10. TOP CUT This is/was the original (and only!) tone control on the early VOX amps and works as part of the power amp circuit by cutting the high frequency response. Please remember that it works in reverse to how we would expect it to in the modern age—the high end is cut as you turn the control up, i.e. maximum control rotation is maximum cut. 11. O/P MODE SWITCH This switch changes the power output valves/tubes from Pentode Mode which is the normal operating mode of the power amplifier to Triode Mode which will halve the power output and will alter the tone to be somewhat smoother. So Pentode = full power = 15 watts (AC15 versions) or 30 watts (AC30 versions). Triode = half power = 7.5 watts (AC15 versions) or 15 watts (AC30 versions). 12. POWER SWITCH Turns the applied input mains voltage ON/OFF. 13. POWER LIGHT Illuminates red when the amp is switched on. WARNING ! Please ensure that your amplifier is connected to the correct mains power voltage—please check the rear panel rating plate. If in doubt consult dealer. WARNING ! NEVER operate this amplifier without the loudspeaker load being connected. Serious damage can occur otherwise. WARNING ! This amplifier must always be earthed (grounded) to prevent the risk of electrical shock. 5 REAR PANEL LAYOUT AC15 VARIANTS 14 15 16 REAR PANEL LAYOUT AC15 VARIANTS 14 15 16 AC30 VARIANTS 14 15 14.LOUDSPEAKER OUTPUT SOCKETS It is of paramount importance that any speaker system that is connected to your amplifier is correctly matched in impedance. Internal speaker(s) of both AC15 and AC30 is 16ohm totally. AC15: Either internal or external loudspeakers are connected to these parallel connected sockets. AC30: Internal speaker is connected to the socket und...
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