A six zone multi-source / multi-zone 100 V mixing amplifier with built-in FM/AM tuner and a media player that plays MP3 and WMA from CD and from USB-stick and SD/MMC cards. It can be used stand-alone or as the core of an expandable sound system
APart introduces the MA246MR: an amplifier that brings a new dimension to 100 V zone mixing amplifiers. This 6-zone with built-in FM/AM tuner, CD (WMA+MP3) and media player for USB + SD/MMC slot (WMA+MP3) can be used stand-alone, or as the core of an expandable sound system.
Because the MA246 offers independent source selection for zones 1 and 2-6, it can be used as a multi-source zoning system. Zone 1 is a fully independent preamp and allows the installer to use an external power amplifier to amplify it. It is especially useful for large areas that require many speakers, like factory production areas. This has the particular advantage that the installer can use the external amplifier to suit his power needs for that particular zone.
Zones 2 to 6 can be individually volume controlled using the integrated speaker volume controls. Zones number 5 and 6 are 70-volt outputs, these are compatible with 100-volt speakers, but by nature, these outputs will have a slightly reduced output level, meant for the ‘quiet’ zones in a multizone system.
MA246 has four balanced inputs on Euroblock. Microphone input 1 is optimized to be used with our MICPAT-6, a selective paging station 6-zone microphone, designed especially for use with the MA246. This microphone is the master microphone. Maximum five of these microphones can be switched in parallel on this single input!
Microphone inputs 2 - 4 are designed to be used with our MICPAT-2 (2 zone groups) microphone or any other microphone depending on the application. On the MA246, you can preset 2 paging groups to be paged with mic 2 – 4.
There are 6 different priority levels on the MA246. When any priority has been activated, integrated 24VDC supply output (max 0.6A) can activate priority relays of loudspeaker attenuators or other devices. Even an emergency 24 VDC supply input is present on the unit. The supply will automatically keep the amplifier powered when mains power is interrupted.
Professional installers will also appreciate the possibility to use an external amplifier as a paging amp. Suppose zones 2 and 3 should not receive paging messages, meaning there should always be background music. In this situation, the installer can use an external amplifier for paging. When a paging call is sent out, zones 2 and 3 will stay connected to the internal amplifier and will continue to receive background music. The other zones will hear the paging message. The MA246 will disconnect these zones from the internal amp and will send the paging message to the external amp. When paging is finished, these zones will be switched back automatically to the internal amp.
When required, it is even possible to use a 2-channel amplifier (e.g. the PA2240BP) as external amplifier, with one channel assigned to power zone 1 of the MA246, while the second channel of the external amplifier is used to power paging messages.
This amplifier is also available as amplifier only (MA246) of as a model with tuner (MA246R).
