Acoustic Image Ten2 EX Owner's Manual - Page 8

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Once you have made the jumper selections you want, reinstall the

preamp in the chassis.

Power Amp

Connecting a Speaker

Speakers are connected via speakon connectors ("twist lock" type)

located on the rear panel. These connectors are used because of their

low contact resistance and non-shorting operation. The output of each

Speakon connector is wired to pole "1". Make sure the cables you use

to connect a speaker (and the speakers themselves) are similarly

wired.

Use Class 2 wiring for speaker cables.

The power amplifier is capable of driving speaker loads as low as 2

ohms. Use a high quality speaker system in order to get the maximum

performance from the amp. The Acoustic Image Coda EX, Corus EX

or Ten2 EX are excellent choices. As mentioned above, the power

amp is short circuit protected. If a short is connected to a speaker jack,

the output signal will be interrupted until the short is removed. Note

that when using a 1/4 inch type speaker plug, there is a momentary

short that occurs when the plug is put into the jack. That short can

cause a problem for the amp.

To be on the safe side, you should

shut off the power to the amp before connecting or

disconnecting speakers from the unit.

Operation Without a Speaker Connected

There may be times when you want to operate the amp without a

speaker connected to it. For example, you may want to record using

the Direct Out and don't want the output of the amp to be heard

through a speaker. In that case, set the master level to zero. By setting

the master level to zero, the signal to the power amp is turned off and it

is not driven without a speaker load which can damage the amp.

sure to set the master level to zero when a speaker load is not

connected to the amp. Operating the amp with no load and the

master level turned up can damage the amp.

Operation--Speaker Cabinets

Docking System

The amp head component of our combo amps can be removed and

used as a stand-alone amplifier. To remove the head unit, first

disconnect the speaker "pigtail" that connects the speaker cabinet to

the amp, then unscrew the docking screws on the rear panel until they

are loose. Grip the cabinet as shown and use the tips of your fingers to

push the head unit out. The fit is quite snug so some force will be

needed.

Once you have removed the head, you will notice the rubber feet

stored in a compartment on the bottom. Remove the feet and screw

them into the four positions on the bottom of the head. When you want

to put the head back into the cabinet, you will have to remove the feet

and put them back into the storage compartment.

To reinsert the head unit, grip the cabinet as shown and push it in with

your thumbs. Again, the fit is snug so some force will be needed. Once

the head unit is in place, tighten the docking screws to pull the head

tight to the docking plate. Reconnect the speaker cable and the unit is

ready to go.

Speaker Placement (Combos or Extension Cabs)

The omnidirectional low frequency output of our speaker cabinets

makes speaker placement relatively noncritical. You will easily be

heard all over the bandstand no matter where one or more are located.

However, best results are obtained when the cabinet is placed on the

floor. Putting the unit on a shelf or stand will reduce bass frequencies.

There may be circumstances where this is desirable. Feel free to

experiment to find the sound that is best for you.

Tilt Mechanism

In some settings, such as a hollow stage or small, "boomy" room, your

amp or enclosure will produce too much bass. One way to cut

unwanted bass output is to use the built in tilt back feature to lift the

front of the cabinet, reducing the coupling to the floor. To do this, pull

the stand into its forward position and set the combo in place on the

floor. The stand is spring loaded so when you pick up the unit, the

Removal

Insertion