Dacs HeadMaster Benutzerhandbuch - Seite 5

Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Controller Dacs HeadMaster herunter. Dacs HeadMaster 8 Seiten. D-a converter, monitor controller, reference headphone amplifier

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In either case the level feeding the unbalanced input will be the same as the

balanced signal level.

4 Analogue Inputs

There are two sets of analogue inputs: balanced on XLR and unbalanced on Phono.

The maximum input level for the balanced inputs is around 28dBu, and for the

unbalanced inputs is +11dBV.

5 Headphone Output

The headphone outputs are on three pole ¼" jack, tip=left, ring=right, sleeve=0V. The

front and rear sockets are connected in parallel. The output circuitry is designed to

drive down long lines with minimal high frequency loss. If you are sending

headphones signals down long lines using screened twin conductor cable (such as

foil screened twin, FST), we would recommend using two separate cables if you can.

This would reduce any possible cross-talk between the left and right channels. There

are installations we know of where left and right are sent down the two conductors in

a single cable, and all reports have been good.

If two or more pairs of headphones are to be driven by an output, they should be of

the same type and impedance. If they are different (eg. low and high impedance),

power sharing will not be even. One will be too quiet, and to achieve the required

level in that pair, the other pair will overload.

Note on the problems of Loudness and Headphones

Our amplifier cannot do the impossible! We can only make headphones as loud as

they are capable of being. Beyond that they distort and clip, which is very bad for your

ears, short and long term. The problem usually is not so much that the headphones

are not loud enough; it is more that the sounds outside are too loud and are breaking

through into your ears. Approached from this direction the problem can be solved

more easily.

6 Volume Control for Headphone Outputs

This knob controls the volume of the headphone outputs; since both front and back

connections are in parallel it controls both outputs.

7 Power Switch

This switch illuminates when mains power ispresent. NB the switch is before the fuse

so if the mains switch is illuminated and none of the LEDs light up, then it may be that

the fuse is blown.

DACS LTD, Stonehills, Shields Road, PELAW, Gateshead, Tyne and Wear NE10 0HW

Tel: +44 (0) 191 4382500 | Fax: +44 (0) 191 4382511 | www.dacs-audio.com | [email protected]