Bedienungsanleitung Elektra E30 (Seite 5 von 7) (Englisch)

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Instructions For Use. Page 5E30

distance, the sound output will be 87dB.

This is actually a reasonably loud sound,

and much daily listening will not use

much more power than this. Note that

changing to a pair of speakers with a

rating of 90dB is equivalent to doubling

the power of your amplifier. To give

some comparisons, a full concert orches-

tra will touch 105 to 110dB for short

periods during a crescendo. Concorde at

take off measures over 130dB, which is

the threshold of pain, and positively

dangerous. The E30, which is rated at

100 watts, should be capable of levels

around 107 dB into the average pair of

loudspeakers. Remember that this is

measured at one metre from the speaker.

This sound level should be more than

adequate in most living rooms, and in

fact should never be used for prolonged

periods. However, loudspeakers are not

particularly linear devices, and some

amount of compression may keep the

levels below the theoretical maximum.

It has been determined that prolonged

exposure to high sound levels can be

dangerous to your hearing, so please take

care.

CONNECTIONS

All connections should be made

with the power OFF.

The E30 has inputs for RCA type

phono plugs. Each input is clearly la-

belled on the back panel.

The mains connector is a standard

IEC type. Do not try to use any other

type of mains lead.

The E30 is extremely easy to use.

Once the loudspeakers and a suitable

preamplifier have been connected,

switch on. The power indicator will

come on.

LOUDSPEAKERS

To connect loudspeakers, you can

use spade terminals or bare wire connec-

tions. Either of these methods should

give good results. The bare wire

connection gives the most direct join,

and should therefore give the best sound

quality, as long as the terminal is

screwed down tightly. However, any

benefits are likely to be minimal, and the

use of spade terminals allows for easy

changing of the connections. More

important is to ensure that there are no

wire "hairs" hanging loose. These could

cause a short circuit, never a good thing

for an amplifier. It is advisable to solder

the ends of the cable, to prevent wires

working loose. Make sure that the

speakers are connected in relative phase.

This means that you should connect the

red wire to the red (+) terminal, and the

black wire to the black (-) terminal. If

your speaker cables are not red and

black, simply ensure that both speakers

are connected in the same way. Failure

to do this will result in a sound which

lacks bass and stereo image (sometimes

referred to as "phasey"). Some commen-

tators have asserted that the question of

absolute phase is also important. Should

you wish to check this out, try changing

both speaker connections at the amplifier

end.

IMPORTANT: switch the ampli-

fier off before doing this.

Your audio dealer can make up a

pair of cables specially for your E30/

loudspeaker combination. Check the

connections, and look out for any little

‘hair’ of wire which might short out the

connections at either end of the cables.

To get the best from your E30 for a

realistic soundstage and full dynamic

range, use it with loudspeakers of a

reasonable efficiency. An average rating

for a loudspeaker these days is about

87dB. This should mean that for an

input of 1 watt, measured at 1 metre

CONNECTIONS

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Elektra E30 Seite 5

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