Photo 1
There are many different types of output jacks, including mono, stereo, TRS, barrel, and power types (Photo 1). Ultimately they all have the same job: transfer the signal from your guitar to the instrument cable. Output jacks can eventually wear out, causing the signal to be intermittent—usually at the worst possible time. Ever been onstage and heard a crackling sound or even silence when you jiggle your guitar cable in the jack? No fun.
When it's time to replace a cranky output jack, there are several things you need to know before firing up the ol' soldering iron. The first step is to identify what kind of jack you have and what will make the best replacement.
Form and function.
Almost every type of output jack used on both acoustic and electric guitars is referred to as "a 1/4" jack," but as gearheads we have to be more specific. Here's a list of the most common types of 1/4" output jacks:
- Mono: Used in most acoustic and electric guitars with passive pickups.
- Stereo: Used in acoustic and electric guitars with stereo outputs or active electronics.
- TRS (tip-ring-sleeve): Used with active electronics, active pickup systems, or acoustic-electric guitars with two independent sound sources (such as an under-saddle transducer and onboard mic).
- Power: This is usually a stereo or TRS jack attached to a preamp.
Each of these can be found in different forms, including the open or skeleton jack, the enclosed or panel jack, the barrel jack, and the flange jack. Let's take a closer look.
Electric guitars with passive pickups typically have open jacks. I prefer the Switchcraft brand, because they have heavy-duty construction.
When it's time to replace a cranky output jack, there are several things you need to know before firing up the ol' soldering iron.
Imported guitars, especially budget models, usually come with enclosed or panel jacks. Often encased in plastic, these jacks are inexpensive and tend to wear out faster than a well-made open jack.
Acoustic-electric guitars often have a cylindrical barrel jack that passes from the inside of the instrument through the tailblock. Secured externally with a nut and threaded strap button, this jack replaces the guitar's endpin. Barrel jacks can have mono, stereo, or TRS configurations.
Takamine acoustic-electrics, as well as some other acoustic-electrics, use flange jacks. These have integrated endpins and structurally resemble barrel jacks. They too come in mono, stereo, and TRS styles.
Guitar applications.
The most common output jack for electric guitars is the mono jack. It has two lugs: One is the ground, and it's part of the jack's interior or case. The other lug is the hot or primary lead. This lug is part of the long, bent flange that connects to the tip of your instrument cable.
A stereo jack is similar to a mono jack, but it's equipped with a third lug and a second (shorter) bent flange. The latter acts as a power switch for active pickup systems by connecting and disconnecting the third lug when a standard 1/4" plug is inserted or removed from the stereo jack. For example, when the black (negative) wire of a battery snap is soldered to the third lug, inserting a 1/4" plug into the jack engages the battery by connecting the negative battery wire to ground and completing the circuit.
The TRS jack functions like a stereo jack with the addition of a fourth lug and third flange that allow you to add a second pickup source. By using a stereo cable and TRS plug, you can independently control these two sources. This is useful when you want to send each to its own preamp, direct box, or amplifier.
A common use for a TRS jack is in an acoustic guitar that has an under-saddle pickup, as well as an onboard microphone or a body sensor. For electric guitars, the TRS jack works great for using magnetic pickups in conjunction with a bridge configured with piezo-pickup saddles, like the L.R. Baggs X-Bridge.
Power jacks attach directly to a preamp and can have either a stereo or TRS configuration, and some preamps are housed within a barrel jack. Power jacks are found in many different systems, including the L.R. Baggs Active Element, Fishman Matrix, and Taylor ES1 and ES2. Because most power jacks are soldered to a printed circuit board, they are difficult to replace without damaging the electronics. If a power jack fails, your best option is to replace the entire unit.
How do I wire this thing?
Photo 2
With the exception of the power jack, all of these are simple to wire if you take the time to map them out. All of them will have a ground and a primary lead, but they differ in other ways. Here's a breakdown of those details:
- Mono jack: The ground lug is attached to the case and the primary lead lug connects to the bent flange (Photo 2).
Photo 3
- Stereo jack: The ground lug attaches to the case; the primary lead is the short lug that connects to the longer bent flange, and the long lug is the power/battery switch that connects to the short bent flange. Photo 3 shows the wiring for a stereo open jack.
Photo 4
And Photo 4 is a stereo barrel jack.
Photo 5
- TRS jack: The ground lug attaches to the case. The primary lead is the short lug connected to the bent flange, and the medium power/battery lug connects to the short bent flange. The longest lug connects the secondary pickup to an isolated output (Photo 5).
Okay, got all that? Great—someday there will be a test ... and you'll be ready.
[Updated 9/9/21]
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The LR Baggs AEG-1 represents a highly versatile, forward-thinking approach to acoustic guitar luthierie. It sports a streamlined body shape with built-in electronics and pickup/microphone settings, providing a wide range of tones suitable for different playing environments and musical styles.
"The reason for AEG-1’s groundbreaking performance is its patent pending integrated neck support system that frees the guitar’s top and back from the need to support the neck. This allows Baggs unprecedented freedom to voice the top and back of each guitar to maximize the acoustic response, achieving a full-bodied sound from a slim and comfortable design. With greater structural integrity, more string energy is driven into the top, resulting in a wider dynamic range, greater tonal depth, enhanced low-frequency response, and improved tuning stability."
The AEG-1’s electronics feature an all-discrete studio grade preamp with a multi-pole crossover system that seamlessly blends the HiFi Pickups and Silo Mic for an inspiring feel and sound in any position – ranging between direct and natural to open and airy,and everywhere in between. As with all LR Baggs electronics, you can expect wonderful warmth, purity, low noise, and long battery life. The system’s three-knob side-mounted controls offer quick access to master volume, pickup/mic blend, tone shaping, phase inversion, and a battery life indicator.
Features
- Three different gloss-finished options for top wood: Torrefied Sitka Spruce, Natural Engelmann Spruce, or Sunburst Sitka Spruce
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- Utilizes single 9-volt with approximately 120-hour life
The Baggs AEG-1 Acoustic Electric Guitar is the culmination of a lifetime dedicated to high-performance acoustic amplification, all rooted in the craftsmanship of a luthier. Our founder and master luthier, Lloyd Baggs, began his journey as a guitar maker, creating instruments for artists like Ry Cooder, Jackson Browne, Graham Nash, and Janis Ian. His deep respect for the guitar evolved into a quest to faithfully amplify his own instruments for live performance.
After years of studying the physics of acoustic instruments and pioneering advancements in pickups and electronics, the Baggs AEG-1 is the realization of everything we’ve learned about acoustic sound and amplification. Lloyd’s dual expertise as a luthier and a pickup designer allowed us to craft a guitar and its electronics in harmony, finely tuning the system for this instrument.
Lloyd Baggs, founder of LR Baggs and Baggs Guitars, describes the journey that has led to his newest creation: “My desire to faithfully amplify the acoustic guitars I was building as a luthier led to the creation of our pickup company. It became my life’s work to eliminate every obstacle to playing live acoustic guitar easy, inspiring, and fun. The AEG-1 is the realization of this philosophy and I’m incredibly proud of this instrument. I hope it brings you inspiration and joy for years to come!”
Designed in California and manufactured in South Korea, the Baggs AEG-1 carries a street price of $1599.
For more information, please visit lrbaggs.com.
Trey Hensley | Baggs AEG-1 First Listen - YouTube
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.LR Baggs AEG-1 Acoustic-electric Guitar - Torrefied Spruce Top
Or you can check out the Reverend Billy Corgan Drop Z. At a glance, the Drop Z may not look like much of a cure for the 6-string doldrums. But pick it up and you’ll feel the difference fast. The Drop Z is built around a 26 1/4" scale and a 24-fret neck that makes this Reverend feel like a very different instrument. Designed and optimized for use with drop tunings, it opens the doors to whole palace ballrooms full of new musical possibilities.
Beastly Blue and Easy To Use
If the feel of the Drop Z alone doesn’t dislodge you from a guitar rut, there’s a good chance that its pretty profile would compel you to pick it up and play. It’s a handsome instrument. The conservatively chambered alder body (it’s routed at the bass and treble horns) is clad in a very pretty twilight-blue-meets-ocean-turquoise glossy finish, which is complimented perfectly by the brushed-aluminum pickguard. The chambered body definitely helps with the weight; the Drop Z is a little less than eight pounds. It also helps the guitar feel very balanced. There’s not a hint of neck dive. And if it weren’t for the discernibly longer stretch you make to reach the first fret, it would feel as familiar and comfortable as a nice Stratocaster.
The medium-oval neck, which is satin-finished maple with a maple fretboard, is a pleasure. It feels substantial and fast, and getting around its expanse is facilitated by a perfect setup. The 12" fretboard radius and jumbo frets also add to the Drop Z’s easy-breezy feel. Big bends require little more effort than they would on a normal scale, and I never felt the urge to squeeze a note to compensate for the weird intonation issues big frets and long scales can cause. From first fret to 24th, playing the Drop Z is an easy glide.
The Drop-Z pickups are a modified version of the Railhammer Billy Corgan Z-One pickups in his other Billy Corgan signature Reverends. The pickups’ impedance is rated at 14.5 ohms, which suggests a pretty hot unit. In this incarnation, the Z-One pickups are tuned for even more output and smoother treble. That’s a good idea for a pickup designed with heavy musical settings in mind.
Fangs on Cue, but Mellon Collie, Too
Though the Drop Z is easy to play in a getting-around-the-fretboard sense, plugging and turning up may take adjustments in approach and attitude. As the pickups’ impedance rating suggests, the Railhammer Z-Ones have a lot of hop, and as the expansive lengths of string resonate impressively, you’ll hear a lot of very present treble overtones. I spent most of my time with the instrument in a C# modal tuning or C–G–D–G–B–B, and in each tuning the Drop Z rumbled impressively (particularly through a late-’60s Fender Bassman head, which is a beautiful, burly match for this instrument). But unless I wanted to linger among the peaky resonances of the highest two strings (and I often did), I needed to attenuate both tone controls.
The good thing is that each of these controls has a very nice range. And while the guitar can start to feel stripped of its essence with too much tone or volume attenuation, there is wiggle room for softening transients and taming unwanted overtone blooms. These pronounced peaks are easy to hear in both the neck and bridge pickup, depending on your approach. I worked a lot more with open strings and drones than Billy Corgan might on songs like “Zero,” which the guitar was tailored for. But for those keen to explore the mellower side of the Drop Z’s personality, the combined pickup setting is a magic bullet. It’s airy, open, and makes it easy and rewarding to navigate slow-moving chord changes with strong bass foundations. It’s also fun to take advantage of the fretboard’s whole expanse in this setting—darting and dashing from toppy treble-note clusters to growling bass harmony notes—and enjoying the detail and string-to-string balance. By the way, the Drop Z, as you might guess, sounds positively massive with distortion, though you should be careful to choose your gain device carefully. The pickup’s midrange emphasis will make a similarly mid-heavy distortion sound harsh. A Sovtek-style Big Muff, with its scooped midrange and round low-end resonance, is an ideal fit if you want to get extra large.
The Verdict
The Korea-made Drop Z is a beautifully crafted instrument and a silky, easy, balanced player that will make you forget, in moments, about the expansive fretboard and extra scale length. It feels completely natural and effortless. How you relate to the tones here will depend on your musical mission. The hot pickups make it a perfect fit for outsized, aggressive tones. I, for one, would prefer to explore the wealth of overtones this well-constructed instrument generates via less aggressive pickups. But players like me will still find much to love in the combined pickup settings and the pickups’ impressive capacity for detail, which, depending on the tuning you use, can highlight harmonic interplay between notes and chords that would be much less prominent and less fun to explore in a more conventional guitar.
Reverend Billy Corgan Drop Z Signature Electric Guitar - Pearl White
