Photo 1: Waves Audio IR-1
Welcome back to another Dojo. Last month, I shed light on the benefits of room recording and using the natural reverb of given spaces. This time I'll briefly explain reverb's four main parameters in layman's terms (it's actually a very deep and complex subject), and, by tweaking those parameters, how to make new, interesting, and physically impossible spaces for use in your recordings.
Most of us add reverb at some point in our recording process, and most of that is through digital plug-ins found in our DAW or by third-party makers (FabFilter, Waves, Universal Audio, etc.) or through rackmounted outboard gear. (Photos 1 and 2 provide a look at the Waves Audio's IR-1 and FabFilter's Pro R in action.) Whatever type of reverb you add, I'd be willing to bet that your process might be similar to this: pull up a reverb, set the amount of wet/dry, maybe tweak the overall time, and you're done. But there's so much more you can do!
I'd be willing to bet that your process might be similar to this: pull up a reverb, set the amount of wet/dry, maybe tweak the overall time, and you're done. But there's so much more you can do!
First, let's look at the main parameters of reverb. In any given space (size doesn't matter), something has to happen that sets sound pressure waves in motion. This is called an impulse function (a loud clap, popping a balloon, a righteous, single, 100-watt djent, etc.). The measurement of that impulse function is called the impulse response (IR). The impulse response contains four main parameters of what we generally call reverb.
Fig. 1
Imagine Metallica is doing a soundcheck at your local stadium and they're going to perform "Damage, Inc." (Still one of my favorite songs!) You're in front-of-house position (FOH), where the mix engineer sits. After the layered reversed guitar intro (lasting 1:18, for those listening at home), the band kicks in with those devastating, staccato, "chunks." With each one, several things happen in rapid succession—remember, I'm relating this as simply as possible as it's really complex. Look at Fig.1. You'll see the:
- Direct sound: A certain amount of sound reaches your ears directly, without reflecting off anything. Obviously, you hear this first.
- Early reflections: These initial reflections are easy to hear and generally bounce off a few things before reaching your ears and arrive closely after the direct sound.
- Reverb: As more reflected sounds reach your ears with mosh-pit ferocity, the ears can no longer make out individual early reflections because of the buildup, and "reverb" starts.Length: Once reverb starts, the time it takes for the sound to bounce off the rafters and for the venue to eventually fall silent again is known as the reverb time or RT60. RT60 is generally the amount of time it takes for the IR to fade 60 dB and merge back with the inherent noise floor of the building.
- Length: Once reverb starts, the time it takes for the sound to bounce off the rafters and for the venue to eventually fall silent again is known as the reverb time or RT60. RT60 is generally the amount of time it takes for the IR to fade 60 dB and merge back with the inherent noise floor of the building.
Okay, now let's get down to business. Most reverb plug-ins allow you to adjust time, EQ, pre-delay, and mix (wet/dry). Some, like Waves IR-1 reverb ($29 street) and FabFilter's Pro R ($199 street) offer much more, but in very different ways.
Adjusting the Pre-Delay
Photo 2 : FabFilter's Pro R
Increasing the pre-delay will postpone the arrival time of reverb. Which means that you can easily defy the laws of physics. Since sound travels at 1,125 feet per second (at 68 degrees Fahrenheit at sea level), by adjusting the pre-delay, you can move the arrival time of the reverb to a later point (that's not physically possible), yet when the reverb actually starts, it goes back to obeying the laws of physics. This trick is often used to bring clarity to an instrument's articulation and to subtle parameters that might be getting washed out in the original reverb. This works extremely well on vocals, snare drum, acoustic guitars, staccato power chords, etc. Further, some pre-delay settings can be synced (quarter-, eighth-, 16th-note, etc.) to the BPM of the song. FabFilter's Pro R does this, again violating the laws of physics. Adding even more violations to the properties of sound, Waves IR will allow you to add a pre-delay to the early reflections before reverb.
Adjusting the EQ
Adjusting the reverb's EQ can add another layer of complexity. Boosting top end to make it brighter can make a heavily pre-delayed reverb sound like it would if it were closer to the source, but, because of the pre-delay, it would organically sound dark and dull. One other thing to try is adding a narrow Q to a frequency band (or several) and tuning your reverb to the key or a specific harmony you wish.
I encourage you to play with all the available parameters as much as you can and see what kind of craziness you can come up with. I'll be sharing some of mine on my website, bryanclarkmusic.com, should you want to see and hear some more examples. Until next time, stay open-minded and keep rocking! Namaste.
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Milkman’s Jerry Garcia-style JG-40 combo.
Entire books about the Grateful Dead’s gear have been written, so we can’t cover it all here. Garcia tinkered with all facets of his sound from about 1971 until 1978, when his signal path reached stability. By then, his On-Board Effects Loop—an innovation he developed to control how much signal reached his effects—was dialed in, his backline firm, and his choice of effects pedals solidified. Even then, adjustments were made, especially when MIDI arrived or when technology like in-ear monitoring was used. Here are some basics.
Scarlet Fire’s recreation of Garcia’s Wolf, originally built by Doug Irwin.
It starts with guitars. For players wanting to get their Jerry on, there’s a wide range of Garcia-esque instruments—with just as wide a range of prices—out there. Recreations of the Doug Irwin guitars and the Fender Alligator Strat abound. China-built models from companies likePhred Instruments can go for as little as $700 or so. Luthier Thomas Lieber apprenticed with Irwin long ago, and his Lieber Guitars will deliver a copy of a variety of Garcia models. Leo Elliott’sScarlet Fire Guitars out of Dallas, Texas, takes things in another direction. Elliott builds Doug Irwin replicas that start at $20,000 and go up from there, with a current wait time of about 18 months for an instrument. He’s outfitted many of the top Garcia guitarists today, including Tom Hamilton Jr. and Jeff Mattson. Elliott says, “I’m a self-taught luthier; I didn’t really build my first guitar until 2010. I understood a little bit about woodworking before I got started, but I learned by reading books and through trial and error. I started building replicas of Doug Irwin’s Wolf guitar right away, which is sort of like building a car and starting with a Ferrari. I didn’t know any better. Then, eventually I got to know Doug Irwin and collaborated with him. So, I got to hold Garcia’s Tiger guitar and get to know it really well, and by 2015, I had built replicas of that guitar. There’s one guy who helps me around the shop, but otherwise, I am building these guitars on my own. I’m collaborating with Doug Irwin on a new series of Tiger guitars, which will retail for 50 grand each.” That’s one way to get your Jerry going.
The JBL-inspired Milkman K-120.
Garcia’s choice of amplifiers is another matter. He preferred Fender Twin Reverbs loaded with JBL Alnico speakers, which were popular amongst many rock bands in the 1970s. The details get complicated; Garcia’s amps were heavily modified, and the Fender Twin served as a preamp that ran to a McIntosh MC-3500 power amp.
It’s hard to find vintage JBL speakers today—at least ones in good shape. San Francisco’s Milkman Sound, founded by Tim Marcus, has created a faithful reproduction of those classic JBLsthey call the K-120. They’re coupling those speakers with a Garcia-style recreation of his Fender Twin that Marcus named the JG-40. “I think 75 percent of Jerry’s tone is in the JBL speakers,” Milkman’s founder says. “But when you start to analyze the other 25 percent, you kind of have to start withDon Rich. [Editor’s Note: Rich was the guitar player in Buck Owens’ band, pioneers of the Bakersfield Sound.] That’s Jerry’s tone, too, but the difference is Garcia’s midrange was a bit throatier. It sounds clean, but really, it’s not clean at the same time. Especially his tone in the late ’70s. There is something about running that Fender Twin Reverb through the McIntosh that would just completely blow out the tone in a really interesting way.”
Garcia colored his tone with off-the-shelf effects. This was, after all, long before the days of boutique pedals. By 1978 and beyond, you’d hear him playing through an MXR Distortion+, an MXR Analog Delay, and an MXR Phase 100. He often used auto wahs, preferring the Musitronics Mu-Tron envelope filter as well as a Mu-Tron Octave Divider and a Mu-Tron combination volume and wah pedal.
When I asked Jeff Mattson, Bella Rayne, and Tom Hamilton Jr. exactly how orthodox they are about using the kind of gear that Garcia did, I got three different answers.
Mattson tells me that because Dark Star Orchestra is doing something very specific, he really has to tailor his sound as carefully to Garcia’s as he can. “Some folks get too hung up on small things, like what kind of cable to use and things like that, and I don’t go that far. But it’s important for Dark Star Orchestra to get Jerry’s sound right because we are covering different eras and different shows. In 2022, for example, we went to Europe and recreated shows from the Dead’s famous Europe ’72 tour, so you have to pay close attention to what kind of gear they were using to do that right.”
Hamilton works differently. He’s always preferred a higher-gain signal than Garcia ever did, landing in more of a British or heavy metal tone. (Randy Rhoads was a big influence.) “I’ve always approached it like, ‘What’s the new information we can put into this thing?’” he says. “Not just recreate but pushing in a forward direction. And anytime I’ve played with the guys who played with Garcia back in the day, they always said to me, ‘You’re here because you’re here. Don’t try and do what we did back in 1978 or do it because Garcia did it that way.’ They’ve always encouraged me to be myself.”
Bella Rayne is just wrapping her head around what it really means to try to sound like Garcia. “Besides Jerry, I’m influenced by guitarists like Dickey Betts and Derek Trucks, so my tone tends to be a bit heavier and bluesy,” she explains. “I’m generally running a Stratocaster through a Fender Twin Reverb. But recently, I was doing a show, and a buddy of mine set up a Jerry rig for me, and that was so cool: JBL speakers, McIntosh head, the whole setup. I had never played through one. I didn’t know what the hype was all about. I plugged in, and it was just amazing; there was such a snap, and I was really commanding the band. I can see myself keeping my current rig but adding a Dead-rig to experiment. But honestly, anything is fine; I am not picky. I just want to play the best that I can.”
“The distinctive pickup configurations of these five guitars deliver a versatile tonal platform, whether you’re exploring subtle textures or pushing the envelope. The deep dive into our Narrowfield technology is obvious with this launch. With both the S2 models made in our Maryland factory and the SE models made in Indonesia, our goal has been to create guitars that will inspire you and spark creativity, all at an exceptional value,” said PRS Guitars COO, Jack Higginbotham.
S2 Special Semi-Hollow
The PRS S2 Special Semi-Hollow features a pair of 58/15 LT humbuckers in the bass and treble positions and a PRS Narrowfield in the middle. A 5-way blade switch and two mini-toggles allow players to tap the humbuckers, creating twelve distinct pickup combinations for sonic exploration. The carved maple top and mahogany back encompass a semi-hollow body that adds a natural airiness and depth to the guitar’s tone while enhancing sustain.
S2 Studio
The PRS S2 Studio delivers a wide range of sonic possibilities through its distinctive single-single-hum configuration. Featuring two proprietary PRS Narrowfield pickups in the bass and middle positions and a 58/15 LT humbucker in the treble position, the S2 Studio offers a palette of sounds from single-coil clarity to vocal humbucker tones. This model also has a 5-way blade switch and push/pull tone control.
SE Special Semi-Hollow
The PRS SE Special Semi-Hollow is designed with the versatility of a hum/“single”/hum setup, bringing PRS’s Narrowfield DD pickup design to the SE Series in a classic maple-top guitar. The semi-hollow construction also enhances sustain and resonance, while the f-hole adds a classic aesthetic. The coil-tap switching system unlocks a wide range of tones through a pair of 58/15 LT “S” pickups in the bass and treble positions and a PRS Narrowfield DD “S” in the middle.
SE Studio
The PRS SE Studio’s “single”/”single”/hum pickup configuration provides a wide range of tonal options. This combination of PRS Narrowfield DD “S” bass and middle pickups with a PRS 58/15 LT “S” treble humbucker offers humbucking warmth, single-coil sparkle, and everything in between. The 5-way blade switch and push/pull tone control further enhance its versatility.
SE Studio Standard
The only bolt-on neck in this release group, the PRS SE Studio Standard brings the tone, playability, and versatility of the Studio model to the SE Series and into an all-mahogany design with a vintage-style pickguard aesthetic. At the heart of the SE Studio Standard is its versatile trio of pickups: an 58/15 LT “S” humbucker in the treble position with two Narrowfield DD “S” pickups in the middle and bass positions. The 5-way blade switch and push/pull tone control allow for an array of pickup configurations.
PRS Guitars continues its schedule of launching new products each month in 2025. Stay tuned to see new gear and 40th Anniversary limited-edition guitars throughout the year.
