AKG Acoustics WMS 400 user manual Setting Up, Transmitter Battery, Side by Side, To a Mixer

3 Setting Up

Important! Prior to setting up your WMS 400, check that the transmitter and receiver are tuned to the same frequency, referring to sections 3.8 and 3.9.

3.1Inserting the 1. Open the battery compartment cover (1).

Transmitter Battery 2.	Insert the supplied battery (2) into the battery compartment, aligning the battery with the polarity sym-
Refer to fig. 5 on pages iii and iv.	bols.
	If you insert the battery the wrong way, the transmitter will not be powered.
3.	Close the battery compartment cover (1).
Note:	Alternatively to the supplied dry battery, you may use a commercial 1.2 V AA size, ≥2100 mAh
	rechargeable battery.

3.2Positioning the Receiver Reflections off metal parts, walls, ceilings, etc. or the shadow effects of musicians and other people may weaken or cancel the direct transmitter signal.

For best results, place the receiver or remote antennas as follows:

1.Place the receiver/antennas near the performance area (stage). Make sure, though, that the transmit- ter will never get any closer to the receiver than 10 ft (3 m). Optimum separation is 16 ft. (5 m).

2.Check that you can see the receiver from where you will be using the transmitter.

3.Place the receiver at least 5 ft. (1.5 m) away from any big metal objects, walls, scaffolding, ceilings, etc.

Note: You can either use the receiver freestanding or mount it in a 19" rack using the supplied RMU 400 rack mounting kit.

3.3Rack Mounting If you install one or ore receivers into a 19" rack, either mount the supplied antennas on the receiver front panel(s) or use remote antennas. This is the only way to ensure optimum reception quality.

3.3.1Single Receiver 1. Unscrew the four rubber feet (1) from the receiver bottom panel.

Refer to fig. 6 on page v. 2. Unscrew the two fixing screws (2) from each side panel.

3.Use the fixing screws (2) to screw the short bracket 3 to one side panel and the long bracket (4) to the other side panel. The brackets are contained in the supplied rack mounting kit.

4.Install the receiver in your rack.

3.3.2Two Receivers 1. Unscrew the four rubber feet (1) from each receiver's bottom panel and remove the screws (5) from

Side by Side	the rubber feet (1).
Refer to fig. 7 on page v.	2. Unscrew the two fixing screws (2) from the right-hand side panel of one receiver and from the left-
	hand side panel of the other receiver.

3.Remove the plastic covers 3 from the side panels with the fixing screws (2) still on.

4.Insert one connecting strip (4) into each free slot in the side panel of the first receiver, making sure to align the hole in each connecting strip 4 with the appropriate threaded hole in the receiver bottom panel.

5.Fix the connecting strips (4) on the first receiver using the screws (5) you removed from the rubber feet.

6.To join the two receivers, slide the connecting strips (4) on the first receiver through the free slots in the side panel of the second receiver. Make sure to align the hole in each connecting strip (4) with the appropriate threaded hole in the bottom panel of the second receiver.

7.Fix the connecting strips (4) on the second receiver using the screws (5) you removed from the rub- ber feet (1).

8.Screw a short bracket (6) to the outer side panel of each receiver using for each bracket two of the screws (2) you removed from the receiver side panels.

9.Install the receivers in your rack.

Note: Be sure to keep the remaining screws (5) for later use.

3.4Connecting the Receiver Connect the audio output to the desired input:

to a Mixer	-	BALANCED socket (1)	- XLR cable - microphone input: set output level switch (2) to "-30 dB".
Refer to fig. 8 on page ii.	-	BALANCED socket (1)	- XLR cable - line input: set output level switch (2) to "0 dB".

-UNBALANCED jack (3) - 1/4" jack cable - unbalanced 1/4" microphone or line input jack.

3.5Connecting the Receiver 1. Check that the AC mains voltage stated on the included power supply is identical to the AC

to Power mains voltage available where you will use your system. Using the power supply with a differ-

Refer to fig. 9 on page ii. ent AC voltage may cause damage to the unit.

2.Plug the feeder cable (1) on the included power supply into the DC IN socket (2) on the receiver rear panel and screw down the DC connector (3).

3.Plug the power cable on the power supply into a convenient power outlet.

3.6Powering Up the Receiver In the display illustrations in the following sections, flashing characters are identified by angle symbols Note: ">" and "<". Characters between quotation marks are examples of possible settings.

The following symbols are used in Diagrams 1-14:

press and hold

press briefly press or briefly

Refer to fig. 1 on page ii. 1. Press the front panel POWER switch to switch power to the receiver ON.

Pressing POWER automatically places the receiver in Lock mode, and the display will indicate the cur- rently active frequency and the "LOCK" label as shown in the screenshot on the next page.

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WMS 400 V 1.10