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Neumann KM131 Miniature Microphone System

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$1,050.00

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Neumann KM131 Miniature Microphone System

The KM 131 was part of the KM 100 series, Neumann’s first modular small diaphragm microphone system. The KM 131 combines the KM 100 output stage with the free-field equalized omni capsule AK 31.

  • Miniature microphones with 7 exchangeable capsules

  • Transformerless circuitry

  • Extensive accessories

THE MINIATURE MICROPHONE KM 131

The variable condenser miniature microphone system consists of several active microphone capsules with different directional characteristics, an output stage, and numerous accessories.

Currently there are seven active capsules available: omni diffuse-field equalized, omni free-field equalized, cardioid, wide-angle cardioid, cardioid with bass roll-off, hypercardioid, and figure-8. 

Through the modular construction of mic capsules and the output stage it is very easy to adapt the system to a wide range of applications. The mic becomes nearly invisible during work with cameras (film, video), on stage, or suspended from the ceiling in a concert hall. 

An active capsule can also be screwed directly onto the output stage. The result is a compact miniature microphone. 

CONSTRUCTION

The microphones are only 92 or 110 mm resp. long and 22 mm in diameter. They consist of the condenser capsule and the output stage. Both parts can be unscrewed from each other. The system offers several condenser capsules with different directional characteristics. 

Numerous accessories can be mounted between the capsules and the output stage. The capsules attach to cables, capsule extensions, swivel mounts, table stands, goose-necks, stereo mounts, and hangers. Therefore, it is very easy to adapt the system to a wide range of applications. 

The active capsule itself is only 35 or 47 mm resp. long. The KM 100 output stage and the active microphone capsule may be separated by up to 50 m of interconnecting cable. These cables are 3 mm in diameter, and therefore very inconspicuous. 

ACOUSTIC FEATURES

  • AK 20 is a pressure gradient transducer with the figure-8 characteristic, realized with a single diaphragm. The diaphragm diameter is just 16 mm. All sound field components reach the diaphragm directly. This results in identical frequency response curves and output levels at 0° and 180° sound incidence. Corresponding accessories allow combining the AK 20 with other active capsules or microphones to obtain an MS-Stereo setup. 

  • AK 30 is a diffuse-field equalized pressure transducer with a flat frequency response up to 10 kHz (in the diffuse field). In the free sound field this microphone has a boost of approximately 7 dB at 10 kHz. 

  • AK 31 is a free-field equalized pressure transducer with a flat frequency response up to 20 kHz (in the free field). In the diffuse sound field this microphone has a high frequency roll-off above 5 kHz. 

  • AK 40 is a pressure gradient transducer with cardioid characteristic. The frequency curves are very smooth and match 0° sound incidence. Sound from sources within a pickup angle of ± 135° is reproduced without any coloration. 

  • AK 43 is a pressure gradient transducer with wide-angle cardioid characteristic. Attenu- ation at 90° is 4 dB, at 135° it is 8 dB and at 180° it is 11 dB. The frequency response curves for sound sources within an angle of ± 90° are parallel up to 12 kHz. 

  • AK 45 is a pressure gradient transducer with cardioid characteristic, similar to the AK 40. However, it has an acoustic bass roll-off that is useful during applications when subsonic and low frequencies may cause difficulties. The AK 45 is optimized for a flat low frequency response at a recording distance of 15 cm (“speech cardioid”). 

  • AK 50 is a pressure gradient transducer with hypercardioid characteristic. Attenuation of sound incidence from the side or rear is about 10 dB, with minimum sensitivity at an angle of 120°. 

ELECTRICAL FEATURES

The KM 100 is phantom powered (48 V) and uses transformerless output circuitry. This has several advantages. It features high output capability and extremely low self noise. It provides exceptionally clean sound, free of any coloration. As with traditional transformers, this circuit approach ensures good common mode rejection. The balanced output signal is protected against interference. 

The construction is extremely compact. The entire microphone circuitry is on a single hybrid module measuring only 2 cm² in area. It is built into the microphone capsule, therefore the term “active capsules”. 

All sensitive components are protected within the capsule. As a result, the quality of the audio signal is never compromised through the use of accessories, for example, when the capsule is detached from the output stage and mounted on a cable or a gooseneck. 

Even with a long cable between active capsule and output stage, the signal is immune to external interference. 

PREATTENUATION

The output stage has a 10 dB switch. Attenuation is achieved by reducing the capsule voltage to one third. 

When the switch is on, the microphone is capable of accepting sound pressure levels up to 150 dB without being overloaded. 

CONNECTORS

To diminish the number of connectors within the KM 100 System some accessories were modified. They can now be screwed directly onto the KM 100 output stage without using the KA 100 cable adapter. The new accessories which include the cable adapter, were renamed adding the suffix KA. For example: LC 3 is now LC 3 KA. 

The separate KA 100 cable, needed for older accessories, will be available also in future. 

The KM 100 output stage has a 3-pin XLR connector. 

SOUND DIFFRACTION SPHERE

The SBK 130 A sound diffraction sphere slips onto the front of the KM 130/KM 131 pressure microphones. The diaphragm becomes an integral part of the surface of the sphere. This affects the frequency response of the microphones. 

While sounds coming from the front-half space are emphasized by up to 2.5 dB between 2 kHz and 10 kHz, sounds arriving from the rear-half space are attenuated by a maximum of 2.5 dB in the range above 5 kHz. 

Since the sound diffraction sphere causes the pressure buildup of the KM 130/KM 131 pressure microphones to begin earlier, the frequency response rises smoothly in the middle and upper range. This is similar to a typical pressure gradient microphone, where the directivity increases with rising frequencies. However, since the KM 130/KM 131 are pressure microphones, they maintain a linear sensitivity down to the lowest frequencies. 

This changing directivity allows to record at a greater distance from the sound source, and makes the KM 130/KM 131 microphones especially suited as stereo main microphones in A-B configurations. 

STEREO RECORDINGS

By means of the AC 30 adapter cable two active capsules, AK 20 and e.g. AK 40 can be connected as MS stereo pair directly with the MTX 191 (A) matrix amplifier. The XY or MS signal is then available at the 5-pin XLR output connector of the MTX 191 (A), and the recording angle can be electrically remote controlled. The output stages KM 100 are then not required. 

STEREO SET

The cardioid and hypercardioid microphones are also available as complete stereo sets, SKM 140 and SKM 150, including all accessories in a single jeweler's box. A further SKM 100-MS Stereo Set containing the microphones KM 120 und KM 140 is available.

Series No
SKU 007061
warehouse_eta No
Colour Black
Warranty Yes

Neumann at Musos Corner

Musos Corner is proud to be an authorised retailer and service agent for Neumann products.

Georg Neumann produced the world's first commercially available condenser microphone in 1928 and Neumann has been a world leader ever since. 

Countless classic recordings were captured on Neumann microphones and models such as the U47 and U87 remain the industry standard for producers and engineers world wide. 

Neumann recently expanded its range to include headphones, preamplifiers and home studio microphones like the TLM102 or TLM103.

Musos Corner highly recommends Neumann products and if we don’t already have your dream Neumann in stock or listed online, contact us at Musos Corner today.

We wanted to see where the magic is created.

Sennheiser & Neumann have combined factories so we thought we would see how these iconic microphones are produced.
Unfortunately cameras were not allowed inside, however we can assure you, the attention to the build quality and quality control is consistent, reliable and beyond comparison.

  

Important Notice

Please allow a few extra days for delivery as our couriers & Australia Post are experiencing higher than normal parcel volumes due to COVID 19

Ordering

Is this product in stock?
We try our best to have everything in stock, but sometimes items sell out faster than we can update the website, as this is a manual process. If this is the case we will call or email you and let you know if your order cannot be fulfilled, and what your options are as soon as possible. We have multiple warehouses around the country so the "in stock" and "out of stock" is an indication of if the item is able to be shipped from one of them, our store, or one of our distributors. Most of the time there is no difference in turn around depending where it is shipped from but if there are any delays we will contact you immediately. We do also ask if you plan on picking up an item, please contact us so we make sure it is in our store ready for you.

I want a certain product but I don't see it on your site, Why don't you have it!!!?
We have a HUGE store here in Newcastle (which we would love to see you in) and not every product we stock is online & vice versa, but if you don't see what you are after, give us a call or email and we will chase it down for you!

Is everything on your website in stock?
We try our best to have everything in stock, but sometimes items sell out faster than we can update the website, as this is a manual process. If this is the case we will call or email you and let you know if your order cannot be fulfilled, and what your options are as soon as possible.

Do all the guitars come set up & with strings?
They sure do! All the guitars are set up at the factory & often once in the country as well! Every guitar we sell is ready to play (after a quick tune of course) 

 

Price Match

Do you price match?
Yes we do! We will do our very best to match & beat any genuine Australian quote or advertised price!
Just email us a link to the cheaper product and we will match or beat it for you (Prices valid for 48 hours) The Musos Corner Price Match option only applies when comparing identical products in the same condition, where payment is made in full by cash, eftpos or credit card. It is subject to verification and does not apply to ebayamerican or overseas sites (come on guys), global sounds, grey importers, bulk buy discounts or site licence prices apply or to prices of other sellers that are available for less than one week. Price Match does not apply if retailers are out of stock or if Musos Corner is out of stock of the product in question. Shipping is also generally not included with the Price Match, that said we will always endeavour to pass on the very best price we possibly can.

 

Payments

Pricing Policy
All of our prices are in Australian dollars (AUD) and include Australian GST (Goods and Services Tax). All transactions are processed in AUD.

In this industry our suppliers can often change their prices quickly and without notice. Sometimes the website or the store will not accurately represent these price changes and sometimes there may be genuine pricing errors due to either technical or human error. In these instances we are not bound by the information offered in error and may not be able to honor the incorrect price, but we will explain the error to you and do everything we can to pass on the best possible deal.

Do you guys Lay-by? 
We certainly do in store, for an online lay-by each one is selected upon its own merrits with a 50% Deposit if approved. For in store Lay-bys: 20% Deposit, followed by weekly or fortnightly payments for 8 weeks. If cancelled, a 20% of RRP Fee will incurr.

 

 

Freight

How do I know if my item ships Free?
Many products we stock have free shipping to certain locations.
Please put in your address into the freight calculator and if there is no delivery charge your order may be eligible for free delivery. General exceptions include anything over 20kg or 105cm and areas as deemed remote by our delivery partners, including all of NT & WA.
Some Items on ZipMoney, ZipPay, or Studio19 Finance may not be eligable for free delivery. We will contact you if this is the case.
Some large/heavy items (over 20kg) , or items deemed not able to be delivered by our standard courier, Australia Post, may have an extra shipping charge.

Free Postage Details
Some items such as certain pedals and stomp boxes, accessories and effects may have free postage. This will go via the cheapest method. Courier/Express/Insurance/Registered Post would be extra. Please contact us for more information or check the "Free Freight" tab at the top of our website.

Express Post
Sometimes we can Express Post/Courier your items if necessary but additional charges may apply. Orders generally leave at 2:00pm daily so if you need an item ASAP, make sure it is ordered by 1pm (please call 1300 687 672) to ensure there is stock of the item and to get an estimated time of arrival. Express post is to capital / major cities only (for next day service). This service is for small items under 3KG only!

How can I track my order?
Check your email and you will have been sent a tracking number, input the number into either Fastway CouriersStartrack or Australia Post's Track & Trace engine. If you have any problems, please call us and we will call the couriers on your behalf.

Do you take international orders?
Sorry, we do not take international orders, we only sell and ship around Mainland Australia & Tasmania. For remote & Island locations please contact us.

How much is shipping?
To work out a shipping cost, please go through the cart and our system will work out a freight price to your area.
If you think there may be an error, or want to clarify the price, you are welcome to contact us and we will work out the best shipping price for you.
There may be some exceptions for heavy or large items (over 25kg), remote locations or some regional areas. We will contact you if this problem arises prior to shipping the goods.

Do you offer freight insurance?
We certainly do, and highly recommend it as Australia is a big country. Insurance / Shipping protection is available and is only 1.5% of the value of the goods.

Can I pick my goods up in store?    
Of course! Unlike some stores, we do not charge for you to pick up in store. We are open 7 days for your convenience, but please give us a date and time of pick up so we can make sure your goods are ready. Orders that are left for over 1 week and not picked up will be returned to stock, unless other arrangements have been made. Valid ID will be required for picking up goods that have been paid for online or over the phone.

What if I am not home for the delivery?
IF you are not home, the driver will leave a card in your mail box so you can pick-up from the local depot/post office or arrange a re-delivery. 
We have found it to be much quicker & easier to have all items sent to a business address where someone will be present.

Can I ask for the courier to leave the goods at my door?
Whilst it Is possible, we highly recommend that you do not do it. All freight warranty & insurance will be void. Only do so at your own risk, if someone steals it, Musos Corner & The freight company will not be held accountable.
If you will not be able to take the delivery, it might be worth asking a friend or neighbour to take delivery of it for you.

What if it appears my goods have been freight damaged?
Please check all items before signing for them! This is very important. Do not sign for an item that appears damaged, to sign for them means "Signed for in good working order" and subsequently is out of the couriers hands, and voids insurance. If this was not possible, there can be a 24 Hour window to try and claim insurance, please contact us & the courier immediately. This only applies to orders that have paid for Insurance & are sent via courier. 

Can the courier or delivery person call me prior to delivery?
Unfortunately as often as we request this, we get denied as many times. No courier or Australia post worker will call you prior to delivery despite any bribes we may try and offer.
If you select courier we will send you a tracking number which you can use to find out an estimated time of arrival for your goods, or alternatively have it sent to a business address.

Can I have my goods delivered on the weekend or after hours?
Unfortunately this is not possible at the current point in time, however you are welcome to pickup in store late night Thursday or on weekends from our Newcastle store. Please contact us to set a pickup time.

Send to a PO BOX?
We cannot ship guitars to a PO BOX under any circumstances. Australia Post will not accept deliveries over 105cm LCM, we cannot change their policy.

Products

Do i need to set up my product?
All guitars come fully set up ready to play (after a quick tuning). Banjos will need to be set up after delivery as they cannot be shipped set up unless they are bought with a case. Some products like piano stands require some basic assembly as they are flat packed for shipping. Digitial pianos and clavinovas may require some simple assembly.

Are all products brand new?
Yes! Everything we sell, unless clearly specified, is considered brand new with full warranty. Some items, especially guitars will have been taken out of their boxes for inspection, demonstration or quality assurance. This in no way effects your warranty supplied to you by Musos Corner or Australian consumer law.

Are the items individually photographed?
All images are for illustration purposes unless otherwise specified. While we wish we could take photos of every exact item, this is not always possible and we use the pictures supplied by either the a) Australian Supplier or b) Manufacturer. 
If you require a specialty photo of your instrument prior to purchase, just contact us to see if this is available.

Does my item come with Australian warranty
All items we sell come with Australian Warranty, please read our returns policy fo rmore information. Some manufactuers provide aditional warranty over the 12 months once registering the product with them. This warranty is between you and the manufactuer, but we will be happy to help should any is needed.

Product Changes
All product descriptions and specifications listed online are subject to change without notice and all images are for illustration purpose only.