Mojave MA-200 Vacuum Tube Condenser Microphone User Manual

Mojave MA-200 Vacuum Tube Condenser Microphone

INTRODUCTION

Congratulations on your purchase of a Mojave Audio MA-200 Vacuum Tube Capacitor Microphone. Your MA-200 was carefully designed and constructed using only the finest materials. The MA-200 microphone is capable of delivering superb performance and, with minimal care, will do so for many years. Your MA-200 was thoroughly tested and given a 24-hour factory burn-in prior to shipment.

The MA-200’s capacitor capsule and electronics are adapted from mid-1950s design practice. The MA-200 utilizes a U.S.-made, military-grade, low-noise sub-miniature vacuum tube and a Jensen¨ audio output transformer. By utilizing modern components, the microphone system emulates the performance of “classic” tube microphones without using esoteric, unreliable, or hard-to-find components. The MA-200 is guaranteed to perform as specified and is suitable for recording even the most demanding music provided that the microphone is used sensibly. For optimum performance from your microphone, please read this manual thoroughly and familiarize yourself with the proper use of the MA-200.

UNPACKING AND INSPECTION

Carefully unpack your MA-200 and verify that all of the accessories included with the microphone are accounted for. Do not discard any packing materials! If anything is missing or damaged, contact your dealer or Mojave Audio immediately.

Items included with the MA-200 are:

1. MA-200 microphone inside an aluminum-style carrying case.
2. AC-operated microphone power supply.
3. 16-foot microphone cable with 5-pin male and female connectors.
4. MA-200 shock mount and European adapter (fitted to shock mount).
5. AC power cable for power supply – molded IEC business machine type with plug.
6. Rugged carrying case for all above items.

Verify that the serial number of your MA-200 matches correctly with the one on your receipt. The MA-200 serial number can be found inside the microphone housing. To access it, simply unscrew the bottom ring and slide the body off. When corresponding with Mojave Audio about your microphone or when service is required, we will need to know the serial number, so keep it handy.

GENERAL INFORMATION

The MA-200 is a vacuum tube microphone and requires a dedicated power supply and a five-pin cable set for operation. These items are provided with the microphone, along with a specially designed shock mount assembly. The capsule is a 3-micron, gold-sputtered type, with a fixed cardioid pick-up pattern. The vacuum tube head amplifier delivers wide bandwidth and low noise operation. The MA-200 utilizes a sub-miniature vacuum tube, which necessitates the need for a dedicated power supply. The vacuum tube is military grade 5840W new old stock and will deliver excellent performance for many years. A specially designed, high-quality Jensen¨ audio output transformer delivers an isolated, truly balanced output signal, minimizing the possibility of unwanted noise entering the preamplifier. As with all vacuum tube microphones, a warm-up period is advised for optimum performance; usually about ten minutes.

SAFETY INSTRUCTIONS

WARNING!

To avoid electrical shock to yourself and damage to the MA-200, use proper circuit protection. MA-200s purchased in the USA are set for 120V, 60 Hz operation. MA-200s purchased outside of the USA are set for the voltages of the country to which they are exported. This information is duly noted on the outside of the shipping box as well as on the voltage selector of the power supply. The MA-200 uses a line fuse for protection. Never replace this fuse with one of a higher current rating. Use only that type which was supplied with the unit. The power supply cord that is supplied with your MA-200 is a standard “business machine” type. It is a good practice to examine the power cord regularly. Never use a cord that shows damage or that has exposed wires.

There are no user-serviceable components inside the MA-200 microphone or its power supply. Always refer service to a qualified technician equipped to service this equipment. Never expose the MA-200 microphone, its power supply, or cable to water or any environment that may create an electrical hazard. In the event of a malfunction, disconnect the MA-200 immediately and determine the nature of the malfunction before attempting to use it again.

To avoid tripping over the microphone cable, make certain that the cable is not in the way of foot traffic, or suspended in an unsafe manner. Make sure that the microphone stand is secure and not likely to fall. If you have any questions or concerns about the operation of your MA-200 please contact the factory.

OPERATION

When plugging the microphone in, the five-pin XLR connectors between the microphone and the power supply should be inserted gently into their corresponding sockets. Rough handling, misaligned orientation, or trying to force the connections together too quickly could result in bent pins.

Operation Tip!

Your MA-200 was thoroughly checked and burned in before leaving the factory. Before using it for the first time, we recommend connecting the MA-200 to its power supply and letting it warm up for at least thirty minutes. Moisture build-up on the capsule or on the other high-impedance components within the microphone can cause random noise or static. The thirty-minute initial warm-up will drive out any residual moisture that may have collected on the internal components during shipping or storage.

Also note that if the MA-200 is being used with phantom-powered microphones in a multiple microphone setup, phantom power may be applied to the channel connected to the MA-200 without ill effect, provided that your standard 3-pin microphone cables are wired properly. A grounded power cord is used to connect the power supply to an electrical socket. MA-200 power supplies are shipped pre-wired for standard AC voltage in the country where the microphone is sold. If there is a need to change AC voltage (travel, sale to another country, etc.), an external switch allows the power supply to be configured for 100, 115 or 230 volts at either 50 or 60 Hz. Make sure the fuse is the proper value – 500 mA for 100-120 Volts AC and 250 mA for 230 Volts AC.

“Hot   plugging” any vacuum tube microphone can damage the mic’s electronics, so always be sure to connect the microphone to the power supply with its multi-conductor cable before turning the power supply on.

AC LINE FUSE

A spare fuse is included with your MA-200 power supply. It is located in the fuse carrier just above the AC receptacle. To access the fuse, gently pry out the carrier with a flat bladed screwdriver. The fuse is mounted in the clip and the spare is located is a small channel behind the cover. Replace the fuse with the same type as supplied with your microphone

MAINS VOLTAGE FUSE TYPE

• 100 Volts AC T500mAL
• 120 Volts AC T500mAL
• 220 Volts AC T250mAL

In the rare event that you experience fuse failure, identify the cause of the failure before using the microphone again! The most common cause for a fuse to fail would be a damaged microphone cable or a broken or bent pin on a connector. The next most likely cause for fuse failure is the operation of the power supply on incorrect voltage.

CARE OF YOUR MICROPHONE

Your microphone is a delicate precision instrument and it should be treated as such. Here are some commonsense rules to keep your microphone healthy.

1. Be careful in your setup so that the microphone and/or power supply never falls to the floor. Never suspend the microphone by its cable, and be sure to position the cable so that it cannot be tripped over. Falls to the floor have been the ruin of many a microphone.
2. NEVER hot-plug the microphone (i.e. plug the microphone into an energized power supply), as the resulting voltage surges can damage the mic’s or following preamplifier’s electronics.
3. Keep the microphone, cable, and power supply in a safe place, such as its carrying case or a microphone locker, when not in use.
4. When plugging in the five-pin cable between the microphone and power supply, orient the plug correctly and plug the connectors in gently. Rough handling or hurry-up plug-ins can result in bent or broken pins.
5. Never connect the power supply to an AC power outlet that has a different voltage than what the power supply is set for.
6. Do not expose the microphone to dusty, smoky, or humid environments.
7. Any repairs must be performed by a qualified technician. There are no user-serviceable parts in the MA-200.
8. Use a soft, lint-free cloth to remove fingerprints and other blemishes on the microphone body. Never use chemicals, solvents, or detergents.

TECHNICAL SPECIFICATIONS

• TRANSDUCER TYPE: Externally polarized pressure gradient capacitor
• DIAPHRAGM: 1-inch diameter, gold-sputtered, single-sided
• DIAPHRAGM THICKNESS: 3-micron
• POLAR PATTERN: Cardioid
• FREQUENCY RESPONSE: 20 Hz-20kHz, + 3dB
• SENSITIVITY: -37 dB re. 1V/pa
• MAXIMUM SPL: 120 dB
• DISTORTION: head amp only, <1% @117dB SPL, <3% @ 125dB SPL
• SELF NOISE: 14dB nominal, not to exceed 16dB (A-weighted)
• OUTPUT CLIPPING LEVEL:
  • 132dB @ 20 Hz
  • 135dB @ 32 Hz
  • 136dB @ 100 Hz
  • 136dB @ 1 kHz
  • 136dB @ 10 kHz
• IMPEDANCE: 200 ohms, transformer-balanced
• VACUUM TUBE: 5840 – pentode tube, wired for triode operation
• DIMENSIONS AND WEIGHT: Carrying case with microphone, power supply , shock mount, and cables: 13 lbs.
• Microphone: 7 5/8 X 2, 1 lb.
• SHIPPING WEIGHT: 13.5 lbs.
• POWER REQUIREMENTS: 100, 115 or 220-240 volts AC at 50 or 60 Hz. Power consumption is approximately 10 watts.

POLAR RESPONSE

Type: Cardioid

FREQUENCY RESPONSE

20Hz – 20kHz, ±2.5dB

WARRANTY

Your Mojave Audio product is warranted to the original owner for a period of two years. Mojave Audio guarantees this product to be free from electrical and mechanical defects and will repair or replace defective components, or replace the microphone at Mojave Audio’s option. Should service be required for your Mojave Audio product, please contact the manufacturer. Excellent service will also be provided for products beyond the warranty period at a modest cost for parts and labor.

Please visit mojaveaudio.com for the latest updates and technical information.

• MODEL NUMBER_____
• SERIAL NUMBER__
• DATE OF PURCHASE___
• PURCHASED FROM____

FAQs

What is the Mojave MA-200 Vacuum Tube Condenser Microphone?

The Mojave MA-200 is a premium vacuum tube condenser microphone renowned for its exceptional audio recording capabilities. It's designed for capturing studio-quality vocals and instruments with warmth and clarity.

What type of microphone is the Mojave MA-200?

The Mojave MA-200 is a condenser microphone, known for its sensitivity and ability to capture a wide range of frequencies accurately. It's particularly well-suited for recording vocals and acoustic instruments.

What makes the MA-200 unique compared to other microphones?

The uniqueness of the Mojave MA-200 lies in its premium components and vacuum tube technology. It features a hand-selected 3-micron gold-sputtered capsule and a military-grade JAN 5840W vacuum tube, resulting in exceptional sound quality.

What is the polar pattern of the MA-200 microphone?

The Mojave MA-200 typically offers a cardioid polar pattern, focusing on capturing sound from the front while rejecting sound from the sides and rear. This pattern is ideal for isolating a source and reducing unwanted background noise.

Is the MA-200 suitable for recording vocals?

Yes, the Mojave MA-200 is highly regarded for vocal recording. Its warm and rich sound characteristics make it a popular choice among professional vocalists and studios for capturing clear and expressive vocal performances.

What instruments can I record with the MA-200 microphone?

The MA-200 is versatile and can be used to record a wide range of instruments, including acoustic guitars, pianos, strings, brass, and more. Its detailed and transparent sound reproduction makes it a versatile choice for various musical applications.

Does the MA-200 require external power?

Yes, the Mojave MA-200 typically requires external phantom power to operate. It is a standard practice to provide +48V phantom power from your audio interface or preamp to power the microphone.

What connectors does the MA-200 microphone use?

The MA-200 typically features an XLR connector, which is a common industry standard for microphone connections. It ensures a secure and reliable connection to your audio interface or mixing console.

Does the MA-200 microphone come with any accessories?

Yes, the Mojave MA-200 often includes accessories such as a shock mount, a hard case, and a power supply. These accessories enhance the microphone's usability and protection during storage and transport.

What sets the MA-200 apart in terms of build quality?

The Mojave MA-200 is known for its exceptional build quality. It features a solid brass body and a Jensen audio transformer, ensuring durability and reliability even in demanding studio environments.

Is there a warranty for the Mojave MA-200 microphone?

Yes, the Mojave MA-200 typically comes with a warranty, offering peace of mind and support in case of any manufacturing defects or issues.

Can I use the MA-200 microphone for live performances?

While the MA-200 excels in studio recording, it can also be used for live performances, especially in venues with high-quality sound systems. Its exceptional audio quality can enhance live vocal performances and instrumentals.

Is there a recommended preamp or audio interface for use with the MA-200 microphone?

There isn't a specific preamp or audio interface recommended for the MA-200, but it's advisable to use a high-quality preamp with sufficient gain and a low noise floor to maximize the microphone's performance.

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