EMG 81

Last updated
EMG 81
EMG 81 Pickup.jpg
Manufacturer EMG, Inc.
Period1979–present
Type Active humbucker
Magnet type Ceramic magnet
Output specifications
Voltage (RMS), V 3.00
Voltage (peak), V 4.50
Noise, dBV-100
Impedance, 10
Current, µA 80
Power requirements
Power source9 V battery
Battery life, hours3000
Sonic qualities
Resonant
frequency, Hz
1630

The EMG 81 is a popular active humbucker guitar pickup manufactured by EMG, Inc. It is usually considered a lead pickup for use in the bridge position, paired with EMG's 85 as a rhythm pickup in neck position (Zakk Wylde is famous for this configuration). [1] It's not uncommon, however, to see a guitar with two EMG 81s in both bridge and neck positions (for instance, Kirk Hammett's EMG-KH21 pickup sets, which include two EMG 81 pickups for both neck and bridge positions).

Contents

The EMG 81 pickup is preferred as a lead pickup because of its high output and smooth control from having a rail magnet. Rail magnets tend to sound smoother through string bends because they have a constant "rail" that runs through the pickup, while typical guitar pickups have polepieces under each string that lose signal strength as the string bends away from the polepiece. The EMG 81 can be recognized by its dark grey humbucker form-factor and a silver embossed EMG logo.

With its high output, focused mids, consistent tone, tight attack and distinct clarity even under heavy distortion, the EMG 81 is a classic favorite among heavy metal guitar players.

History and design

The EMG-81 was developed in 1979 and released to the market in 1981 (hence the model number). Construction is similar to traditional U-shaped pickups, but there are no separate pole pieces; steel bars (rails) are used instead. The Alnico V magnets of earlier discontinued models have been replaced with ceramic ones. While nominal output is the same as current EMG 85, lower noise ratio gives more gain opportunity.

As most other modern EMG pickups, today's EMG-81 has a Quik-connect output, which is a three-pin header on the pickup which comes with a compatible wiring harness. This allows for a less complicated pickup swap in the future, only requiring the removal of the pickup guard and disconnecting the pickup, as opposed to melting the solder and installing the new pickup.

A few variants of the EMG 81 have also been released, such as the TW and X. The 81TW version features two separate pickups and preamps in a single pickup housing, allowing for single-coil and humbucking tones. [2] The 81-X provides increased headroom giving the voicing an organic and open tone while still maintaining clarity and response.

18V Mod

The EMG 81 power source can be modified from 9V to 18V by adding a second 9V battery wired in series. This increases the headroom of the pickup and decreases distortion, particularly with regard to transients. [3] Although the majority of EMG's pickups are rated for 27V operation, they recommend a maximum of 18V, citing the negligible performance increase. [3]

There are two main ways to perform this modification. One method involves using separate battery harnesses for each battery. There are several different ways to achieve this, and wiring diagrams can be found all over the internet. [4] The other involves using a separate 9V snap leading to the control cavity to wire two batteries in series outside of the battery compartment. [5]

Guitars that are sold with the EMG 81 as stock

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References

  1. Rardin, Kenny (June 2008). "EMG-81TW Active Humbucker". Premier Guitar . Archived from the original on 2011-02-19. Retrieved 2011-04-13.
  2. "Archived copy" (PDF). Archived from the original (PDF) on 2010-12-14. Retrieved 2012-03-06.{{cite web}}: CS1 maint: archived copy as title (link)
  3. 1 2 "Archived copy" (PDF). Archived from the original (PDF) on 2011-09-26. Retrieved 2010-12-27.{{cite web}}: CS1 maint: archived copy as title (link)
  4. "Upgrading EMGs to 18 volts". Archived from the original on 2012-03-06. Retrieved 2010-12-27.
  5. "[Tech] HOW TO: The reversible 18v mod! - SevenString.org". Archived from the original on 2016-04-05. Retrieved 2012-03-06.
  6. 1 2 3 4 "Electric Guitars - RG Series | Ibanez guitars". Archived from the original on 2014-04-14. Retrieved 2014-04-14.