Ashly TRA-4150 Betriebshandbuch - Seite 9

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P o w e r f l e x

6250 shown -

P o w e r f l e x

4400 only has

channels 1-4

with no 70V

output.

The Powerflex 6250 is capable of three channels

of bridged output, while the Powerflex 440 is capable of

two channels of bridged output. To use bridged mode,

first press MONO from the Stereo/Mono switch on the

channel pair to be bridged. This sends the same audio

signal to both channels. Then press BRIDGE from the

Dual/Bridge switch on the channel pair to be bridged. This

inverts the phase of the input signal to the second channel.

These two channels are now operating together in Bridged

Mono mode, and the output must be taken from the two

red binding posts corresponding to the bridged channel

pair Observe polarity by noting which red binding post is

(+) and which is (-)

7.8

Speaker Outputs - Binding Posts

Dual binding posts provide connections for the

speaker outputs. In addition to using the banana-type plug,

the binding posts have a slotted entry-way for wire-crimped

spade terminals. In BRIDGE/70V mode, the channel 1, 3,

or 5 red binding post is the (+) in-phase speaker output

terminal and the channel 2, 4, or 6 red binding post be-

comes the (-) out-of-phase speaker terminal.

CAUTION! NEVER CONNECT THE TWO RED

BINDING POSTS TOGETHER OR CONNECT EITHER

RED BINDING POST TO A BLACK BINDING POST!

7.9

AC Inlet

Powerflex amplifiers can be configured by the cus-

tomer for operation at either 115VAC or 230VAC mains.

Switching from one to the other simply requires the fol-

lowing steps:

Operating Manual - Powerflex Multi-Channel Power Amplifier

move the power cord from the rear of the amplifier.

the fuse holder in the AC inlet and remove it.

tate until the new nominal mains voltage level indication

(115 or 230) is on top and properly oriented for reading.

inlet, making sure that it is plugged in all the way.

#6 below), and press the fuseholder back into the AC inlet

until it latches.

and with the appropriate terminations, plug the cord into

the rear of the amplifier and then into the wall. The

Powerflex amplifier is now ready for use at the new mains

voltage.

fuse is MDA 12, 250V, and the required power cord is 3-

wire grounded, 13 Amp (16AWG) minimum.

fuse is MDA 10, 250V, and the required power cord is 3-

wire grounded, 10 Amp (18AWG) minimum.

1.) Unplug the amplifier from the wall and re-

2.) Using a small screwdriver as a lever, unlatch

3.) Remove the voltage selection insert and ro-

4.) Replace the voltage selection insert in the AC

5.) Replace the fuse with the appropriate size (see

6.) Using a power cord of the appropriate size

If the mains voltage is 110-125VAC, the required

If the mains voltage is 220-250VAC, the required