Summary of DA 428
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User manual da 428 completely digital 4-channel amplifier.
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2 1. Introduction thank you for choosing a k.M.E. Product! This completely digital 4-channel amplifier with dsp-functionality is based on a similar technology-platform like the active units of the versio-series. The exceptional and ground breaking performance of this digital amplifier allows an opti...
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3 3. The completely digital 4-channel dsp-amplifier the da 428 is a completely digital 4-channel amplifier with 700 w @ 4 ohm output power on each channel. This compact, light- weight 19"-2u device is equipped with comprehensive dsp features like matrix router, 6 fully parametric equalizers, two cro...
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4 5. The control- and connection panel 1.Rotary encoder 2.Sd-card reader 10.Link-output da 28 4 1 1 1 1 3.Rgb led 4.Lcd-display 5.Navigation pad 9.Line-input 8.Ground/free- switch 7.Mains fuse 6.Mains connector 11.Module slot with rs/nc-modul 12.Speaker output 13.M8 treads for rack m ounting.
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5 operation 1. Rotary encoder - you can adjust the volume level of each channel independently. If there is no menu item activated, a short pressing of an encoder effected the status display of this channel. By pressing the encoder a bit longer, you are muting this channel. To unmute the channel, pre...
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6 6. Powering up / down to switch on / off your da 428, please follow the instructions: 1. Apply power supply connection (90 - 250 volt / 50 - 60 hz) on da 428 (if the unit is switched to power mode „always on“, it is switched on now) – „lock“-function can be active! 2. Press for a very short time t...
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7 7. Navigation structure on the hardware unit eq 1+ 6 main menu preset delay (out a - d) 0 ... 400 m equalizer (out a - d) frequency 35 ... 12000 hz q 00.7 ... 12.5 gain -12 ... +12 db shape peq / shelf frequency 35 ... 12000 hz q 00.7 ... 12.5 gain -12 ... +12 db eq 2 - 5 hp frequency 35 ... 8000 ...
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8 8. Operation all these software parameters must be set directly on the hardware device in the first instance. The names of the menu points refer to the user navigation on the device. Die menüpunkte • preset: delay [adjust delay from 0 – 400m for each channel, in 1 cm steps] output phase [adjust ou...
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9 level link prospectively available mute link prospectively available channel names [enter a name for each channel, max. 9 digits] preset name [enter preset name, max. 12 digits] • memory card: load all from card save all to card load preset from card save preset to card here you can… • display mod...
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10 • system: input mode [only for channel a + b] in a analog, in a digital in b analog, in b digital here you can switch the input a resp. The input b to „analogue“ or „digital“. By doing this, you have the possibility to apply an analogue and / or digital audio signal on input a / b. On input c + d...
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11 9. Routing of input channels here you can set the routing for each input channel. This process depends on the input signal (analogue or digital). That means, if you have chosen the input mode „digital“ (corresponds only for channel a + b, because this input channels can operate with a digital aud...
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12 10. Link mode / content of link channels here you can appoint, which audio signal is on the link a + b (adjustable for each channel). If you choose the menu item „source“ the input signal is also on the link socket available, that means input signal = output signal (independent if there is an ana...
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13 11. Specifications da 428 electronic: output power @ 4 / 8 ohm 4 x 700 w / 400 w amplifier four fully digital amplifiers with high efficiency, about 90 % frequency range 20 hz - 20 khz s/n-ratio (a-weighted / unweighted) 100 / 95 db input sensitivity 0 db (775 mv), adjustable crosstalk @ 1 khz > ...
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14 12. The most important menu functions in this part of the user manual you will find a structured digest about the procedure for the necessary settings in the main menu and its functions. If you pay attention to that a riskless use of the da 428 is ensured. 12.1 the „mute”- function this function ...
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15 12.3 entering password to lock the da 428 with a password (max. 8 digits) you have to enter it first. This password can be changed every time. Note! Keep in mind resp. Note down the entered password because if you want to „unlock“ your da 428 you have to enter the password again (see „lock“-funct...
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16 13. System operation and extension this overview shows you examples of using, combination and extension of passive pa components within using da 428 as heart and control center, to adapt your reinforcement optimally on your audience. Monitor-mode four independently and free routable channel for m...
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17 example 3: actively channelled pa system – 2x or 4x top units (min. 350 w / 8 ohm) + 2x subwoofers (min. 700 w / 4 ohm) or 4x subwoofers (min. 400 w / 8 ohm) example 4: free configurable, passively and actively channelled pa systems with bass extension (left drawing) or top extension (mid drawing...
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18 example 5: front back 0° 90° 180° 270° 300° 330° 240° 210° 120° 150° 30° 60° directional dispersion of the subwoofers: free configurable, actively channelled pa systems with directional (cardioid) dispersion in the low frequency range (lower drawing) attention: please mind nominal load and impeda...
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19 warranty claims please learn from the warranty card included..
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20 english disposal of your old appliance 1. When this crossed-out wheeled bin symbol is attached to a product it means the product is covered by the european directive 2002/96/ec. 2. All electrical and electronic products should be disposed of a separately from the municipal waste stream via design...