Dual Rec and Marshall Questions Answered
Dual Recs & EL84s
What is the major difference between the Triple Rectifier 3-channel and the Dual Recto 3-channel?
Without getting overly technical the main differences are as follows: the Dual Rectifier uses four (4) 6L6 power tubes where as the Triple Rectifier uses six (6) 6L6s. As the model names indicate, the Dual Rectifier uses two (2) rectifier tubes and the Triple Rectifier uses three (3) rectifier tubes. The other notable difference would be the transformers. As we are often asked which model we prefer, I would recommend the Dual Rectifier over the Triple Rectifier and the main reason is the difference in transformers (especially the output transformers).
I was reading an article recently by the late/great Ken Fischer and he said that when it comes to Marshall amps with EL34s, itās a good idea to change the stock 220K bias feed resistors to something lower, like 100K. This apparently helps prevent EL34s from wearing out prematurely. I had also read this same advice in Kevin OāConnorsā TUT1 book. I just bought myself a 1983 Marshall JCM800 2204 last week and had a look inside the chassis ā it turns out that my amp does have these two 220K bias feed resistors. Should I replace those with a pair of 100K resistors the next time I go and retube the amp, or will something like JJ Tubes be fine with these stock 220K bias feed resistors?
Let me preface this by saying God bless Ken and may he rest in peace. Both gentlemen are technically correct in that it will lengthen the life of your power tubes. Should you change the 220K bias feed/splitter resistors to 100Ks? More than anything else, it comes down to personal taste (canāt stress that enough); while pages can be written on this topic, we do not have the necessary room with which to accommodate an in-depth technical explanation regarding how this impacts the phase inverter, the power supply, etc. So, suffice to say, we will only be scratching the surface.
Kevinās books are fantastic and I highly recommend acquiring them, as they always contain a great deal of knowledge, required formulas, etc. and in my opinion they are well worth the investment. Authors presume that the information provided will be put to use through experimentation (i.e. trying various values, etc). In doing so, you will inevitably discover a wide variety of things that are not easily explained in books ā in this case, changing bias splitter values ā as a great many of these things directly impact the āfeelā of an amp as well as the tone. Tone is subjective, therefore it is extremely difficult to describe the effects that various changes can have on tone as well as the feel of an amp.
Understanding how amps work (i.e. designing, modifying existing designs, repairing, etc.) is all about hands-on experience and nothing will ever take the place of spending countless hours on the bench experimenting. After all, itās all about how the amp sounds and feels in the end, right?
Getting back to answering your question ā yes, you can change the bias splitters to 100Ks, and in theory you can use any value between 82K to 220K, but of course it depends on the circuit design as whole. Does lowering the values from 220K affect the tone you presently have? Yes it does. Touch response/dynamics are altered, highend frequencies are attenuated (a high end roll off), headroom is effected, etc. One of the single most important things I can hope to impress upon you is that everything impacts tone.
Generally speaking, all JCM800s came from the factory with 220K bias splitters, as do nearly all amps that use the same basic push-pull power supply design as the JCM800 (far too many to list).
If it were me, I would leave the 220Ks in place, as I personally feel they sound and feel better than 100Ks. In addition, you may well have a JCM800 that runs on lower plate voltage and if so, my guess is if you changed them to 100Ks it would sound very muddy and undefined. But once again, tone is subjective so let your ears be the final determining factor. Good luck and have fun experimenting!
Have you ever converted Marshall (JCM, TSL, DSL) amps from EL34s to 6L6s?
Yes we have, and with regards to the JCM800s, some players prefer it. With regards to the TSL/DSL series, I do not think that itās worth the while. What I would recommend is going with a larger bottle EL34 such as the EL34B/Ruby EL34BSTR (same tube); it has more bottom end than the typical EL34 and has the open top end much like a 6L6.
Trace Davis
President/Founder of Voodoo Amplification Inc.
www.voodooamps.com
www.myspace.com/voodooamps
45 Atwater Road, Lansing NY 14882
Tel: (607) 256-0465 Fax: (607) 330-0272
Email Trace at: trace@voodooamps.com
Sublime, fronted by Jakob Nowell, son of late Sublime singer Bradley Nowell, are in the studio writing and recording new songs for an upcoming full-length album. This marks their first new album since 1996.
When not performing at various festivals across North America in 2024, front man Jakob Nowell immersed himself in the Sublime catalog and found a deep sense of connection to his late father. The band is tapping into the 90s nostalgia, writing and recording the new songs with powerhouse producing duo Travis Barker and John Feldmann, in addition to working with producer Jon Joseph (BĆRNS). The first single will be released this Summer via their newly established label Sublime Recordings.
"I grew up on Sublime. ā40oz. to Freedomā changed the way I listened to music. Iām so honored to be working with the guys in Sublime. Creating music for this album has been so fun and exciting. Bradley comes through his son Jakob while writing in the studio and performing. Chills every day in the studio when he sings and play guitar. This is going to be really special." ā Travis Barker
āSublime has always been a huge influence on me and to be able work with the band has been inspirational and game changingā¦It has been a highlight of my life to work on such a seminal record with such talented people. Iām so grateful for this opportunity and to continue the legacy and keep it authentic to what they have historically done.ā ā John Feldmann
After Jakob Nowellās debut as Sublimeās new front man at Coachella 2024, he and his uncles Bud Gaugh and Eric Wilson continued the momentum of this latest chapter of the band, performing at over 20 festivals and shows across North America by the end of last year. Additional highlights from 2024 include Sublimeās late-night television debut on The Tonight Show Starring Jimmy Fallon, a 4-song set on the Howard Stern Show and the bandās first top 10 hit on alternative radio since 1997 with their single āFeel Like That,ā featuring the vocals of both Bradley Nowell and his son Jakob together.
2025 is shaping up to be an even busier year for the band, with a handful of headlining shows, high-profile festival appearances to support the release of the new album.
For more information, please visit sublimelbc.com.
Sublime 2025 Tour Dates
- April 5 ā LIV Golf Miami ā Miami, FL
- April 18 ā Red Rocks Amphitheater ā Morrison, CO
- May 3 ā Beachlife Festival ā Redondo Beach, CA
- May 16 ā Welcome To Rockville ā Daytona Beach, FL
- May 23 ā BottleRock Napa Valley ā Napa, CA
- May 25 ā Boston Calling ā Boston, MA
- June 14 ā Vans Warped Tour ā Washington, DC
- July 12 ā 89.7 The Riverās 30th Anniversary Show ā Omaha, NE
- July 20 ā Minnesota Yacht Club Festival ā Saint Paul, MN
- September 14 ā Sea.Hear.Now ā Asbury Park, NJ
- September 19 ā Shaky Knees Festival ā Atlanta, GA
Price unveiled her new band and her new signature model at a recent performance at the Gibson Garage in Nashville.
The Grammy-nominated alt-country and Americana singer, songwriter, and bandleader tells the story behind the creation of her new guitar and talks about the role acoustic Gibson workhorses have played in her musical historyāand why she loves red-tailed hawks.
The Gibson J-45 is a classic 6-string workhorse and a favorite accomplice of singer-songwriters from Bob Dylan to Jorma Kaukonen to James Taylor to Gillian Welch to Lucinda Williams to Bruce Springsteen to Noel Gallagher. Last week, alt-country and Americana artist Margo Price permanently emblazoned her name on that roster with the unveiling of her signature-model J-45. With an alluring heritage cherry sunburst finish and a red-tail-hawk-motif double pickguard, the instrument might look more like a show pony, but under the hard-touring and hard-playing Priceās hands, it is 100-percent working animal.
The 6-string was inspired by the J-45 she bought at Nashvilleās Carter Vintage Guitars after she was signed to Third Man Records, where she made her 2016 ice-breaker album, Midwest Farmerās Daughter. But her affection for Gibson acoustics predates that, going back to when she found a 1956 LG-3 in her grandmotherās home. The guitar had been abandoned there by her songwriter great uncle, Bobby Fischer.
āI played it for years before I found my J-45,ā Price recounts. āAt Carter Vintage, I tried a lot of guitars, but when I picked up that J-45, I loved that it was a smaller guitar but really cut through, and I was just really drawn to the sound of it. And so I went home with that guitar and Iāve been playing it ever since.ā
āHaving a signature model was something I had dreamed about.ā
Of course, Price was also aware of the modelās history, but her demands for a guitar were rooted in the presentāthe requirements of the studio and road. The 1965 J-45 she acquired at Carter Vintage, which is also a cherry āburst, was especially appealing ācompared to a Martin D-21 or some of the other things that I was picking up. I have pretty small hands, and it just was so playable all up the neck. It was something that I could easily play barre chords on. I could immediately get everything that I needed out of it.ā
If youāve seen Price on TV, including stops at Saturday Night Live, The Late Show With Stephen Colbert, and Jimmy Kimmel Live!, youāve seen her ā65. And youāve also seen, over the years, that part of the soundholeās top has been scraped away by her aggressive strumming. Itās experienced worse wear from an airline, though. After one unfortunate flight, Price found her guitar practically in splinters inside a badly crushed case. āIt was like somebody would have had to drive over this case with a truck,ā she relates. Luckily, Dave Johnson from Nashvilleās Scale Model Guitars was able to put Humpty Dumpty back together again.
After that, an alternative guitar for the road seemed like a requirement. āHaving a signature model was something I had dreamed about,ā Price says. Friends in her songwriting circle, including Lukas Nelson and Nathaniel Rateliff, already had them. Four years ago, a tweet asking which women they thought should have signature models appeared, and one of her fans wrote āMargo Price.ā Smartly, Price tagged Gibson and retweeted. Codey Allen in Gibson entertainment relations spotted the tweet and agreed.
The double pickguard was chosen for Priceās J-45 because of its symmetry, as a nod to the Hummingbird, and due to her heavy strumming hand.
Photo courtesy of Gibson
āThe neck is not quite as small as my J-45, but it is just a bit smaller than many J-45s fives, and very playable no matter what size hands you have.ā
āAnd so we began our journey of building this guitar,ā Price says. āI debated whether it should be the LG-3, which I still have hanging on my wall, or the J-45. I went to Montana and visited their [acoustic] factory and sat down with Robi Johns [director of sales and marketing at Gibson acoustic], and we ultimately decided that the J-45 was my guitar. Then we started talking about the specs. We did pull from the LG-3 in that the body of this signature guitar is a bit smaller. It still has a really loud, clear sound that rings through. The neck is not quite as small as my 1965 J-45, but it is just a bit smaller than many J-45s, and very playable no matter what size hands that you have.ā
The pickup that Price selected is a L.R. Baggs VTC Element with a preamp, and she took a prototype of the guitar on the road opening for the Tedeschi Trucks Band. āI am used to playing with a really loud band, with drums and sometimes a couple electric guitars, and I wanted to make sure that this guitar just cut through,ā she says. āIt was really important to me that it be loud, and it cut beautifully. Itās got a mahogany body and scalloped bracing, which makes it very sturdy. This guitar is a workhorse, just like me.ā
The Margo Price J-45ās most arresting characteristic, in addition to its warm sunburst finish, is its double-sided pickguard with an etching of a quartet of red-tailed hawks in flight. Itās practical for her strumming style, but itās also got a deeper significance.
āWe talked about all sorts of things that we could put on the pickguard, and Iāve always been a big fan of the Hummingbird, so what we did is a bit of a nod to that,ā Price continues. āIāve always been drawn to red-tailed hawks. They are supposed to be divine messengers, and they have such strength. They symbolize vision and protection. I would always count them along the highway as Iād be driving home to see my family in Illinois.ā
Birds of a feather: āIāve always been drawn to red-tailed hawks,ā says Price. āThey are supposed to be divine messengers, and they have such strength. They symbolize vision and protection.ā
Photo courtesy of Gibson
With its comfortable neck, slightly thinner body, and serious projection, Price notes, āI wanted my guitar to be something that young girls can pick up and feel comfortable in their hands and inspire songs, but I didnāt want it to be so small that it felt like a toy, and that it didnāt have the volume. This guitar has all of those things.ā To get her heavy sound, Price uses DāAddario Phosphor Bronze (.012ā.053) strings.
Price says she and her signature J-45, which is street priced at $3,999, have been in the studio a lot lately, āand I have a whole bunch of things Iām excited about.ā In mid March, she debuted her new bandāwhich includes Logan Ledger and Sean Thompson on guitars, bassist Alec Newman, Libby Weitnauer on fiddle, and Chris Gelb on drumsāin a coming out party for the Margo Price Signature Gibson J-45 at the Gibson Garage in Nashville. āIāve been with my previous band, the Price Tags, for more than 10 years, and itās definitely emotional when a band reaches the end of its life cycle,ā she says. āBut itās also really exciting, because now, having a fiddle in the band and incredible harmony singers ā¦ itās a completely different vibe. Iāve got a whole bunch of festivals coming up this year. Weāre playing Jazz Fest in New Orleans, and Iām so excited for everyone to hear this new iteration of what weāre doing.ā
With its heritage cherry sunburst finish and other appointments, the Margo Price Signature Gibson J-45 balances classic and modern guitar design.
Photo courtesy of Gibson
Get premium spring reverb tones in a compact and practical format with the Carl Martin HeadRoom Mini. Featuring two independent reverb channels, mono and stereo I/O, and durable metal construction, this pedal is perfect for musicians on the go.
The Carl Martin HeadRoom Mini is a digital emulation of the beloved HeadRoom spring reverb pedal, offering the same warm, natural toneāplus a little extraāin a more compact and practical format. It delivers everything from subtle room ambiance to deep, cathedral-like reverberation, making it a versatile addition to any setup.
With two independent reverb channels, each featuring dedicated tone and level controls, you can easily switch between two different reverb settings - for example, rhythm and lead. The two footswitches allow seamless toggling between channels or full bypass.
Unlike the original HeadRoom, the Mini also includes both mono and stereo inputs and outputs, providing greater flexibility for stereo rigs. Built to withstand the rigors of live performance, it features a durable metal enclosure, buffered bypass for signal integrity, and a remote jack for external channel switching.
Key features
- Two independent reverb channels with individual tone and level controls
- Mono and stereo I/O for versatile routing options
- Buffered bypass ensures a strong, clear signal
- Rugged metal construction for durability
- Remote jack for external channel switching
- Compact and pedalboard-friendly design
HeadRoom Mini brings premium spring reverb tones in a flexible and space-savingformatāperfect for any musician looking for high-quality, studio-grade reverb on the go.
You can purchase HeadRoom Mini for $279 directly from carlmartin.com and, of course, also from leading music retailers worldwide.
For more information, please visit carlmartin.com.
Together with Nathaniel, weāre decoding our favorite eras of the Edgeās tonesāfrom his early Memory Man days through his expanding delay rack rig, into his 1990s Achtung Baby sounds, and all the way through to his Sphere rig. How does he get those amazing delay tones? And what are those cool picks he uses?
Thereās a good chance that if youāre a guitar fan, youāve seen Nathaniel Murphyās gear demosāeither on his Instagram account, where he goes by @zeppelinbarnatra, or on the Chicago Music Exchange page. His solo arrangements of classic tunes display his next-level technique and knack for clever arranging, and he makes our jaws drop every time he posts. When we learned that the Irish guitarist is a huge fan of U2ās The Edge, we knew he had to be our expert for this episode.
Together with Nathaniel, weāre decoding our favorite eras of the Edgeās tonesāfrom his early Memory Man days through his expanding delay rack rig, into his 1990s Achtung Baby sounds, and all the way through to his Sphere rig. How does he get those amazing delay tones? And what are those cool picks he uses?