1. تعارف
The Midas MICROPHONE PREAMPLIFIER 502 is a high-performance, compact 500 Series premium microphone/line preamplifier. It incorporates award-winning Midas amplifier technology, enhanced with quad discrete ultra low noise input transistors, delivering exceptional audio fidelity.
This module features the legendary Midas input, allowing signal levels up to +24 dBu without the need for a pad, while maintaining its much-loved soft clipping characteristic. It also includes classic Midas XL4 swept low and high pass filters with independent selection switches, providing precise tonal shaping. A switchable twin aux balanced output offers mic/line splitter capability when installed in compatible Midas L6 or L10 racks.

شڪل 1.1: سامهون view of the Midas MICROPHONE PREAMPLIFIER 502, highlighting its input, gain, filter, and output controls.
2. اھم حفاظتي ھدايتون
Please read these instructions carefully before operating your Midas MICROPHONE PREAMPLIFIER 502. Keep this manual for future reference.
- هن ڊوائيس کي مينهن يا نمي کي ظاهر نه ڪريو.
- ڪنهن به وينٽيليشن جي سوراخن کي بند نه ڪريو. ٺاهيندڙ جي هدايتن جي مطابق انسٽال ڪريو.
- ڪنهن به گرمي جي ذريعن جي ويجهو نصب نه ڪريو جهڙوڪ ريڊيٽرز، گرمي رجسٽر، اسٽو، يا ٻيو سامان (بشمول ampلائفائرز) جيڪي گرمي پيدا ڪن ٿا.
- صرف ٺاھيندڙ طرفان بيان ڪيل منسلڪ / لوازمات استعمال ڪريو.
- سڀني خدمتن جو حوالو ڏيو قابل خدمت اهلڪارن ڏانهن. خدمت ڪرڻ جي ضرورت پوندي آهي جڏهن سامان ڪنهن به طريقي سان خراب ٿي ويو آهي، جهڙوڪ پاور سپلائي ڪنڊ يا پلگ خراب ٿي ويو آهي، مائع ڦوڪيو ويو آهي يا شيون اپريٽس ۾ گر ٿي ويا آهن، سامان مينهن يا نمي جي سامهون آيو آهي، عام طور تي ڪم نٿو ڪري. ، يا ڇڏيو ويو آهي.
- This product is designed for professional audio applications and should be installed by qualified personnel.
3. دٻي ۾ ڇا آهي
Upon unpacking your Midas MICROPHONE PREAMPLIFIER 502, please ensure all components are present and in good condition:
- مڊاس مائڪروفون پريAMPLIFIER 502 module
- تڪڙو شروع ھدايت / حفاظت جي ڄاڻ
- وارنٽي رجسٽريشن ڪارڊ
جيڪڏهن ڪا به شيون غائب يا خراب آهن، مهرباني ڪري فوري طور تي پنهنجي ڊيلر سان رابطو ڪريو.
4. سيٽ اپ
The Midas MICROPHONE PREAMPLIFIER 502 is a 500 Series module designed to be installed into a compatible 500 Series rack or chassis (e.g., Midas L6 or L10 racks).
4.1 Installation into a 500 Series Rack
- Ensure your 500 Series rack is powered off and disconnected from the mains supply.
- Carefully align the edge connector of the 502 module with an available slot in your 500 Series rack.
- Gently but firmly push the module into the slot until it is fully seated. Do not force the module.
- Secure the module to the rack using the provided screws (typically two per module) through the faceplate.
- Once all modules are installed, reconnect your 500 Series rack to the mains supply and power it on.

شڪل 4.1: زاويه view of the Midas MICROPHONE PREAMPLIFIER 502, illustrating its form factor for 500 Series rack installation.
4.2 آڊيو ڪنيڪشن
The 502 module receives its input and sends its output via the 500 Series rack's backplane connections. Refer to your 500 Series rack's manual for specific input/output patching details.
- Microphone/Line Input: Connect your microphone or line-level source to the corresponding input on your 500 Series rack's rear panel.
- پيداوار: Connect the output of your 500 Series rack to your mixing console, audio interface, or other processing equipment.
- Aux Output (if applicable): If using a Midas L6 or L10 rack, the switchable twin aux balanced output provides additional routing flexibility.
5. Operating the Midas 502
The Midas 502 offers intuitive controls for precise microphone and line-level signal conditioning.
5.1 فرنٽ پينل ڪنٽرول
- INPUT (Rotary Knob): Adjusts the input level of the signal. The meter above indicates the input signal level.
- GAIN (Rotary Knob): جي مقدار کي ڪنٽرول ڪري ٿو amplification applied to the input signal.
- LOW PASS (Rotary Knob): Swept low pass filter control, allowing you to cut high frequencies. Range: 3 kHz to 15 kHz.
- HIGH PASS (Rotary Knob): Swept high pass filter control, allowing you to cut low frequencies. Range: 10 Hz to 400 Hz.
- TRIM (Rotary Knob): Fine-tunes the output level of the preamplifier. The meter above indicates the output signal level.
- 48V (Button): Engages +48V phantom power for condenser microphones. An indicator light illuminates when active.
- IN (Button - Phase): Inverts the phase of the input signal (180 degrees). An indicator light illuminates when active.
- IN (Button - Filter Bypass): Bypasses the low and high pass filters. An indicator light illuminates when active.
- TX (Button): Activates the transformer output, providing a distinct sonic character. An indicator light illuminates when active.
- Mic/Line (Switch): Selects between microphone and line-level input impedance and gain staging.

شڪل 5.1: تفصيلي view of the Midas MICROPHONE PREAMPLIFIER 502 front panel controls.
5.2 بنيادي آپريشن ورڪ فلو
- Connect your microphone or line source to the appropriate input on your 500 Series rack.
- سيٽ ڪريو مائڪ / لائن switch according to your source.
- جيڪڏهن ڪنڊينسر مائڪروفون استعمال ڪري رهيا آهيو، ته ان کي لڳايو 48V خيالي طاقت.
- سان شروع ڪريو حاصل ۽ INPUT knobs at their minimum settings.
- تدريجي طور تي وڌايو حاصل until you achieve a healthy signal level on the input meter, avoiding clipping.
- ترتيب ڏيو گھٽ پاسون ۽ هاءِ پاسز filters as needed to shape the tone and remove unwanted frequencies.
- استعمال ڪريو IN (Phase) button if phase correction is required.
- مشغول ڪريو TX button for transformer coloration if desired.
- استعمال ڪريو ٽرم knob to fine-tune the output level to your next device in the signal chain.
6. سار سنڀال
The Midas MICROPHONE PREAMPLIFIER 502 is designed for reliable operation with minimal maintenance.
- صفائي: يونٽ جي ٻاهرين حصي کي صاف ڪرڻ لاءِ نرم، سڪل ڪپڙو استعمال ڪريو. رگڙيندڙ صاف ڪندڙ يا محلول استعمال نه ڪريو.
- وينٽيليشن: Ensure that the ventilation slots on your 500 Series rack are not obstructed to prevent overheating.
- اسٽوريج: When not in use for extended periods, store the module in a cool, dry place, ideally within its original packaging or a protective case.
7. مسئلا حل ڪرڻ
If you encounter issues with your Midas MICROPHONE PREAMPLIFIER 502, refer to the following common troubleshooting steps:
| مسئلو | ممڪن سبب | حل |
|---|---|---|
| ڪوبه آڊيو آئوٽ |
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| خراب ٿيل آڊيو |
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| گوڙ يا شور |
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If the problem persists after trying these steps, please contact Midas customer support or an authorized service center.
8. وضاحتون
| خاصيت | تفصيل |
|---|---|
| شيءِ جو وزن | 8.25 پائونڊ (3.74 ڪلوگرام) |
| پيداوار جي ماپ (L x W x H) | 6.85 x 1.5 x 5.2 انچ (17.4 x 3.8 x 13.2 سينٽي) |
| ماڊل نمبر | مائڪروفون اREوڻوAMPزندگي 502 |
| ان پٽ جو قسم | Microphone / Line |
| پريتم پاور | +48V سوئچ ڪرڻ لائق |
| فلٽر | Classic XL4 Swept Low Pass (3k-15k), High Pass (10Hz-400Hz) |
| ٻاھر | Standard 500 Series Output, Switchable Twin Aux Balanced Output (with compatible racks) |
| پهرين دستياب تاريخ | جنوري 3، 2020 |

شڪل 8.1: پوئتي view of the Midas MICROPHONE PREAMPLIFIER 502, displaying manufacturing and serial information.
9. وارنٽي ۽ سپورٽ
Midas products are built to the highest standards and come with a limited warranty. Please refer to the warranty card included with your product or visit the official Midas webتفصيلي وارنٽي شرطن ۽ ضابطن لاءِ سائيٽ.
For technical support, service, or spare parts, please contact your authorized Midas dealer or visit the Midas support page online. When contacting support, please have your product model number (MICROPHONE PREAMPLIFIER 502) and serial number ready.
Official Midas Webسائيٽ: www.midasconsoles.com





