User manual ALESIS DEQ224

[. . . ] Reference Manual This page intentionally left blank. Table Of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Welcome!. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 DEQ224 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 How to Use This Manual. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Important Safety Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Important Safety Instructions (English) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] You'll also notice that it doesn't matter whether you go up or down; you can get from Program 10 to Program 40 going either direction. If you press and hold the [UP] button while you press the [DOWN] button, the DEQ224 will jump to Program 00. If you keep pressing the [DOWN] button, the DEQ224 will jump backward through the programs in increments of 10 (50, 40, 30, etc. ). Likewise, if you press and hold the [DOWN] button while you press the [UP] button, the DEQ224 will jump to Program 00. And if you keep pressing the [UP] button, the DEQ224 will jump forward through the programs in increments of 10 (10, 20, 30, etc. ). Once you get the hang of those two methods of navigation, you can reach any program in the unit's memory in two seconds or less. 3 Pressing the [DOWN/UP] buttons at the same time while in Program mode will call up Program 00, the default program. 29 3 Basics of Equalization Basic operation: Edit mode If you're not already there, exit to Program mode by using the [CHANNEL/EXIT] button. Then select program 00 on the DEQ224 by pressing the [DOWN] and [UP] buttons at the same time. Program 00 is a "flat" program, and it's easy to see why it's called that: the gain setting for every band is 0 dB. Calling up this program is almost the same as pressing the Bypass button, in that the audio passing through the unit will not be equalized in any way. Of course, the difference is that you can edit the program and hear the changes that you make. If you don't already know what kind of EQ you're looking for, this may be a good place to start. Use Program 00 if you want to start with a "clean slate" and build a new program from the ground up. Single Band Edit Pressing a [BAND SELECT] button puts the DEQ224 into Edit mode. The Numeric LED Display will change from the current program number to the gain value in decibels (dB) of the band you just selected. In addition, one of the Band Gain LEDs above that [BAND SELECT] button will start blinking. If it is higher or lower than that, one of the yellow LEDs will blink. The [DOWN] button will lower the gain value, or "cut" the chosen frequency; the [UP] button will raise the gain value, or "boost" the frequency. Pressing both the [DOWN] and [UP] buttons at the same time will reset the gain value of the frequency to 0dB. Band Solo The DEQ224 has a handy feature called Band Solo that allows you to "isolate" a given frequency while you are editing. This can help you determine exactly which band you need to highlight or deemphasize. Release the [BAND SELECT] button and the value of that band will be unchanged. This only works with one band at a time, but you'll find it to be a very helpful feature. After resetting a band's value, you can change the level of that band in 2 dB increments if you hold one of the [DOWN/UP] buttons and press the opposite button repeatedly. This can help you set up a curve with greater accuracy and speed. 30 Basics of Equalization To exit Edit mode, press the [CHANNEL/EXIT] button. The same thing will happen if you de-select the single band you have selected. [. . . ] Customers outside of the USA and Canada are not covered by this Limited Warranty and may or may not be covered by an independent distributor warranty in the country of sale. Do not return products to the factory unless you have been given specific instructions to do so. Internet Address: Important information and advice is available on our web site: http://www. alesis. com Email may be addressed to Support@alesis. com. 61 6 Troubleshooting This page intentionally left blank 62 Specifications Audio Input Input Connectors: Nominal Input Level: Maximum Input Level: Input Impedance: 2 Impedance-Balanced 1/4" TRS jacks -10dBV (-15dBFS) +5dBV (1. 78 Vrms) 10k All measurements done over a 22 Hz - 22 kHz range with 1 kHz sine wave at -1dBFS input. Impedances are measured at 1 kHz. Audio Output Output Connectors: Nominal Output Level: Maximum Output Level: Output Impedance: 2 Impedance-Balanced 1/4" TRS jacks -10dBV (-15dBFS) +5dBV (1. 78 Vrms) 220 Audio Performance Signal To Noise Ratio: THD+N: Frequency Response: Power Consumption: >96 dB A-Weighted, Analog In to Analog Out <0. 007%, Analog In to Analog Out 22-22kHz ± 0. 50dB, Analog In to Analog Out 15 Watts Max (90-230 VAC / 50-60 Hz) Mechanical: Size: Rack Spaces: Weight: 1. 75" H x 8. 5" W x 5. 5" D 1/2 Space 2. 0 lbs. [. . . ]