Carvin PA620 Quick Start UP, Channel Level Control, Monitor Level Control, Graphic Equalizer

PA410 / PA620 CONTROLS

QUICK START UP

If you’re like most new owners, you’re probably in a hurry to plug your mixer in and use it. Here are some brief instructions to get you going quickly. With the mixer unplugged and the unit turned off, complete the following procedures:

1. CONNECTING AC POWER TO YOUR MIXER

•Be sure to use the correct power cable for your country. (120VAC or 240 VAC)

•Use only a grounded (3 prong) power outlet to prevent a shock hazard and reduce hum and noise.

2. CONNECTING SPEAKERS

• Use the 1/4” SPEAKER jacks on the front panel to con-

nect up to two 8Ω speakers. The speaker cables are to

be non-shielded with a minimum size of 16 gauge.

NOTE: Do not run your speakers through microphone

wire, guitar cables, or multi-conductor microphone

junction boxes or “snakes” as they are sometimes

referred to. This wire is normally shielded and of a very

light gauge causing a substantial loss of power.

4. CHANNEL LEVEL CONTROL

The LEVEL control adjusts the volume of the channel before going to the MAIN master LEVEL. Here is where the indi- vidual channel volumes are adjusted to make up the desired mix heard at the main outputs. A general rule to prevent interstage distortion is to always keep the MAIN master LEVEL the same or higher than the channel LEVEL.

5. MONITOR LEVEL CONTROL

The MONITOR level control adjusts the volume of the chan- nel going to the monitor mix. The monitor level control is pre-channel level and pre-channel tone controls. This means it is unaffected by adjustments in channel level and tone controls. The purpose for this is so the main mix adjustments for tone and level can be made without dis- turbing the monitor mix.

MASTER SECTION FEATURES

8. THE GRAPHIC EQUALIZER

The 7 band graphic EQ is an excellent tool to fine tune the overall mix. Set all sliders to their center detent position. When the sliders are in this position, they do not effect the audio signal. When a slider is raised or lowered it boosts and cuts the listed frequency respectively. One setting that can be used to enhance your sound is to cut the mid range (set the 1KHz slider to -8) and raise the high and low frequencies as shown. This is a common “smile” curve that gives a tight

punchy sound with

		GRAPHIC EQ					plenty	of	highs to
100	250	500	1K	2.5K	5K	10K
							cut	through		a
+12						12 +
8						8	crowd.			The
4						4	Graphic		EQ	can
0						0
							also help to reduce
4						4
8						8	feedback.
- 12						12 -

3. CONNECTING INPUTS TO YOUR MIXER

•For low level balanced devices such as microphones, plug into the balanced MIC inputs using a shielded XLR cable.

•For high level unbalanced devices such as instruments & Keyboards plug into the LINE input jacks using a shielded 1/4” phone cable. Set the GAIN switch so the LEVEL control is not overly sensitive.

4. TURNING YOUR MIXER ON

•Turn all channel and master LEVEL controls to their off positions

•Adjust all “EQ” tone controls— the channel’s HI and LOW and the 7 Band Graphic EQ’s to their center position.

•Turn the mixer on by the rear panel POWER SWITCH and watch for the POWER LED to light. Your mixer is now ready to operate.

MIC CHANNEL FEATURES

1. XLR MICROPHONE INPUT

The XLR MIC input is designed for balanced low impedance (microphone) input signals. The differential balanced input amplifier reduces the common noise picked up on the microphone cables. The XLR connector is wired as per the industry standard, pin 1 is ground, pin 2 is non-inverting (positive), and pin 3 is inverting (negative). Phantom power is available on every XLR input jack when the phantom power switch in the master section is pressed. This feature allows condenser microphones to be run directly from the mixer. Note: When using phantom power, make sure the phantom power is switched off before connecting or dis- connecting microphones to the mixer. It is recommended to allow 5 seconds for the phantom power to discharge before making any microphone connections. Also, to avoid hearing a pop, turn down the master volume when turning on the phantom power.

2. LINE INPUT JACK

PA620

7

6

5

4

3

2

1

The LINE input is a 1/4” phone jack designed for unbalanced line and instrument level inputs. Examples to use in these inputs are guitars, keyboards, mics, or a CD or tape player. The line inputs can be used at the same time the XLR inputs.

3. +20DB GAIN SWITCH

The GAIN switch increases the input sensitivity on both the LINE and MIC input jacks by 20dB. After determining the input is too low for mixing with the level control, turn down the level control, press in the gain switch and adjust the level again. If distortion is heard regardless of the channel LEVEL control’s setting, disengage this switch to eliminate over-driving of the input stage.

6.CHANNEL EFFECTS LEVEL CONTROL

The EFFECT control adjusts the volume of the channel going to the internal effects. Make sure the effects level is not set too high, if the master effect PK (Peak) LED flashes red, turn down the Channel Effect until it stops flashing. See # 11 for more details.

7.CHANNEL TONE CONTROLS

Each channel features active tone controls LOW and HI. Both function as boost (clockwise) & cut (counter-clockwise) con- trols where the center 0 position is neutral. Both LOW and HI are shelving type tone controls with corner frequencies at 80Hz and 11.5k Hz respectively. It is suggested the channel tone controls start out in their center 0 positions. A good set- ting for added dynamics is to set the LOW & HI at +6.

9. MAIN MASTER LEVEL CONTROL

The MAIN control is the master volume control for the mixer. The MAIN will control the volume of the LINE OUT jack, the TAPE OUT RCA jack and the internal power amplifier (speaker volume).

10.PHANTOM POWER SWITCH AND LED

The PHANTOM power switch turns on the microphone phantom power in the channel XLR jacks. This power is used for supplying a bias voltage to condenser micro- phones. The LED indicates the phantom power is turned on. The phantom power will not damage dynamic micro- phones.