- ページ 8

アンプ ALLNIC AUDIO A-5000 DHTのPDF オーナーズマニュアルをオンラインで閲覧またはダウンロードできます。ALLNIC AUDIO A-5000 DHT 13 ページ。 300b single-ended pure direct heated triode monoblock power amplifier
ALLNIC AUDIO A-5000 DHT にも：オーナーズマニュアル (9 ページ)

ページを印刷する

•

securely and correctly fastened the speaker cables and ensured that they are also connected properly

to the speakers

•

checked that all tubes are snug in their sockets

Turn on the A-5000 DHT by depressing the power switch button located (facing the front of the unit) on

the right side-panel to the "on" position. The "on" position is with the top of the button switch depressed.

Of course, the off position is the reverse. After about a thirty to forty (30 - 40) second delay (the soft

start), the A-5000 DHT will be powered on. After warm-up and application of full plate voltage, not all

tubes may bias at the same rate. Allow one or two minutes for all the tubes to reach full operating

specification.

OPERATION

When the power is on, the current meter on the front of the chassis will illuminate (See Figure 5). From

this point on, operation is straight-forward. When you are finished listening, turn off your A-5000 DHT

monoblocks first; then, turn off your preamplifier and sources.

In the case of any failure, please contact Your Allnic dealer for assistance.

THE CURRENT METERS

The single, illuminated meter indicates the current supply to the 300B power tube in the A-5000 DHT (See

Figure 5). There is also a screw type potentiometer on the chassis top directly in front of the 300B (Refer to

Figure 6 for its location).

When you turn on the A-5000 DHT, the needle of the current meter should be between the two parallel

lines on the meter face. Any error of current supply to or failure of a 300B tube is indicated by the needle

moving out from between these two parallel lines.

TUBES AND TUBE BIAS

Each A-5000 DHT monoblock uses the following tubes (See Figure 6):

• One (1) x 300B

• One (1) x RS242

• One (1) x New Old Stock HL-2

• One (1) x 5U4G (Substitute with equivalent direct-heated rectifiers only)

Because of the user adjustable bias for the 300B, it is not necessary to use a matched pair of these power

tubes in the A-5000 DHTs.

The illuminated meter on the front of the chassis (see Figure 5) indicates the current supply to the 300B tube

in the A-5000 DHT. There is a potentiometer that is used to bias the 300B (Refer to Figure 6 for its location).