View allAll Photos Tagged treblebooster
Fender "Rory Gallagher" Stratocaster replica into Dallas Rangemaster treble-booster into Fender Blues Deluxe 40W amplifier.
1980 QUEEN Brian May Red Special Guitar live in Charlotte North Carolina The Game Tour. Guitar Hero Guitar collection
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
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I think the switch in this is bad. It works with the 4.7 nF cap, but when I switch to the 22 nF cap it goes silent. I replaced the cap, but it wasn't that, so I'm guessing the switch is bad.
You know, half the problem with building stuff anymore is that SO many of the parts are crap.
Anyway, I've been experimenting with different transistors. Right this minute I've got a Russian GT308B in there, which is actually one of the best-sounding transistors I've tried.
The leakage actually does seem to be a factor. The more leakage the transistor has, the splattier the boost seems to be. These old Russian transistors have NO measurable leakage. Like, they come up as 0.00 mV on the tester. All of them so far. Germanium transistors with no leakage. Crazy. The Russians really built this stuff right.
Anyway, these transistors have a very cool sound. They sound grain-y and a little overdrive-y, but still very tight and articulate. I tried an OC44 and an OC75 and they both sounded fine, but not really any different than an AC128 or a 2N527. It really does seem to be a function of leakage that varies the overall sound of the effect. I think. I mean, I may be missing something else, but the sound changed a lot when I went to these low-leakage (no leakage?) Russian transistors.
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My wife is having to burn up some vacation days before the end of the year (or she'll just lose those hours), so I'm a little busy with R&R right now. However, I wanted to mention this.
This is a Rangemaster board I built out with a Roto-Tone that I set up to give it four different input capacitor options.
As you can see, I used an AC-130 NPN germanium transistor in the Rangemaster build. This one has an hFE of 63. Something occurred to me last night, though. One of those things that just popped up in my head for no apparent reason.
I used an AC-130 in this because I have a thousand of 'em and in my sorting found several hundred in the hFE range that would be ideal for Rangemasters.
I have some more of these boards, though. What occurred to me last night was the Tesla 104NU71. I have about a hundred of those sitting around. They are an exceptionally pleasant-sounding transistor with an average hFE of 60-80. I think they may have high-frequency reproduction issues. That's my guess as to why they sound so, "warm." Which is the thing with a Rangemaster. The extreme high end needs to have that warmth for the circuit to sound its best.
I'm not slagging this one with the AC-130 before even trying it, but I really think I need to try some 104NU71 builds, too. Soon.
This is based on the old Rangemaster booster, but it's got three switchable input capacitors. The original used a 5 nF, but I always thought that was a little too thin. This one is switchable between a 10 nF, 22 nF and 47 nF.
These kinds of treble boosters were used to change the frequencies where your amp clipped back when amps like the JTM-45 and AC-30 tended to be a little flabby-sounding, due to their designs being geared around a more full-range style of reproduction. Later Vox would add, "Top Boost" and Marshall would reduce the value of their cathode bypass capacitor to shift the point where the amp clips. So these are designed for that kind of thing, just in case this is unfamiliar territory.
So the 10 nF setting (the, "toppy-est") gets you into that kind of Brian May thing to my ears. Or at least that's what I was shooting for. The 22 nF setting has a nice biting midrange thing going on. Finally, the 47 nF was my attempt at the old Tony Iommi Rangemaster sound. Not a full-range boost, but very close.
The, "Secret Sauce" here is a Tesla NPN germanium transistor. The original used PNP transistors, so it had to run on battery power only or a finicky adapter. This will run on a standard Boss adapter. There's actually no provision for battery power. These transistors break up and add some grit to the signal. Like a light overdrive. It's actually my favorite effect because it voices the guitar/amp and adds a very light and transparent overdrive at the same time.
These particular transistors are very low-noise and have an extremely pleasant tone. They aren't great at reproducing high frequencies, which probably seems a bit anti-intuitive. These transistors were made for AM radios back in the day. The problem with a lot of treble boosters is that they turn the extreme high end into kind of a harsh thing. These transistors boost the upper mids that you want (well, that I want) boosted, but then run out of steam before they get to the extreme upper range that makes your head hurt (well, makes MY head hurt, anyway). They're the perfect treble booster transistor, IMO.
Some people kick these in for a solo boost, which is a good use for 'em. Brian May used to just leave his on all the time. It was a key part of his sound. These also sound great stacked with other fuzz, overdrive and distortion effects. I think they sound amazing into a Fuzz Face, but I've also had really cool experiences using one to drive an Expandora.
There is no provision for battery power. I just want to repeat that to make sure it's clear. These are DC-only operation, but they don't need any kind of finicky power adapters like most germanium pedals. The enclosure has a durable powder coated finish. Hopefully you'll enjoy this design as much as I do.
I finally got my Orange Treble and Bass Booster version to work.
At the moment, there's definitively some bass cut and some volume boost, but no overdrive. I will investigate...
This is the Orange Treble and Bass Booster circuit built on veroboard (minus the input pot). Nothing is soldered yet.
Based on the Hornby Skewes Zonk Machine II circuit. With a Rogue Sound Blind Mary (based on the Hornby Skewes Treble Booster) in front of it, this pairing is similar to a Hornby Skewes Shatterbox.
So this turned out pretty cool. It's kind of like a Rangemaster with a Varitone. The red knob is a four-position rotary switch. It chooses between 4n7, 10n, 22n and 47n input capacitors. The original Rangemasters used 5n, but that's not a common value these days, so most people use 4n7 because it's close enough (for rock 'n roll, yo!). The 10n is much nicer, IMO. Still kind of thin and mean, but with more mean. The 4n7 is a little anemic when you hear it A/B'd with the 10n. The 22n is probably the perfect, "Iommi" cap. It's not quite full-range, but has much more complex mids. Then the 47n is pretty much full-range and a little tubby for my tastes.
Very cool. I was thinking this prototype would give me a good idea where to change the choices of capacitors, but I think these four may be just about perfect. Which is odd, because I usually have to do it wrong 37 times before I get what I'm hoping to get. Heh...
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I finished up another of my treble boosters today.
This is based on the old Rangemaster booster, but it's got three switchable input capacitors. The original used a 5 nF, but I always thought that was a little too thin. This one is switchable between a 10 nF, 22 nF and 47 nF.
These kinds of treble boosters were used to change the frequencies where your amp clipped back when amps like the JTM-45 and AC-30 tended to be a little flabby-sounding, due to their designs being geared around a more full-range style of reproduction. Later Vox would add, "Top Boost" and Marshall would reduce the value of their cathode bypass capacitor to shift the point where the amp clips. So these are designed for that kind of thing, just in case this is unfamiliar territory.
So the 10 nF setting (the, "toppy-est") gets you into that kind of Brian May thing to my ears. Or at least that's what I was shooting for. The 22 nF setting has a nice biting midrange thing going on. Finally, the 47 nF was my attempt at the old Tony Iommi Rangemaster sound. Not a full-range boost, but very close.
The, "Secret Sauce" here is a Tesla NPN germanium transistor. The original used PNP transistors, so it had to run on battery power only or a finicky adapter. This will run on a standard Boss adapter. There's actually no provision for battery power. These transistors break up and add some grit to the signal. Like a light overdrive. It's actually my favorite effect because it voices the guitar/amp and adds a very light and transparent overdrive at the same time.
These particular transistors are very low-noise and have an extremely pleasant tone. They aren't great at reproducing high frequencies, which probably seems a bit anti-intuitive. These transistors were made for AM radios back in the day. The problem with a lot of treble boosters is that they turn the extreme high end into kind of a harsh thing. These transistors boost the upper mids that you want (well, that I want) boosted, but then run out of steam before they get to the extreme upper range that makes your head hurt (well, makes MY head hurt, anyway). They're the perfect treble booster transistor, IMO.
Some people kick these in for a solo boost, which is a good use for 'em. Brian May used to just leave his on all the time. It was a key part of his sound. These also sound great stacked with other fuzz, overdrive and distortion effects. I think they sound amazing into a Fuzz Face, but I've also had really cool experiences using one to drive an Expandora.
There is no provision for battery power. I just want to repeat that to make sure it's clear. These are DC-only operation, but they don't need any kind of finicky power adapters like most germanium pedals. The enclosure has a durable powder coated finish. Hopefully you'll enjoy this design as much as I do.
Lemme just go ahead and tell this story. I almost never buy stuff anymore. I'm too busy trying to SELL stuff and I'm not really successful enough at that to feel like doing the disposable income thing very often. Usually everything I spend is on R&D-related stuff and so I talked myself into buying this for exactly that reason.
It's the original two-footswitch Catalinbread Galileo. The left side is a riff on the RunOffGroove, "May Queen" circuit that's supposed to emulate Brian May's Vox AC30 sound. On the right is a simplified version of the Catalinbread Naga Viper treble booster, modded to emulate Brian May's treble booster. They don't make this version any more. People were apparently confused by the controls, so they simplified it as a one-footswitch pedal, but I've really been curious about the version with the Vox tone stack and separate booster. I found this one used on Reverb and had to try it.
OK, first off, the booster section is really nice. I've never tried a Naga Viper, but now I want to try one. It manages a pretty righteous Rangemaster sound without resorting to germanium transistors in the process. Very mean and gritty. Me likey.
The Vox side is gainy as all getout. I mean, I understand that people are obsessed with gain these days, but a Vox isn't really a gainy amp. You can probably see here that I've got the Gain control turned all the way down and it's STILL distorting like mad. The manual says, "Go ahead and set the Gain at maximum and back off as much as you feel necessary (to compensate for hot pickups)." OK, I've been using my Junior with its humbucker. Maybe the gain won't be so egregious with single-coil pickups, but I was amazed at how distorted this was.
The voicing is really nice, though. It gets that kind of vowel-sound thing going that Vox amps seem to do sometimes. Like, the wah pedal was designed as a solid-state simulation of the Vox tone stack. It just happened to fall into devious hands with other plans. This has that odd Vox flavor, though. Just SO gainy.
Anyway, that's my testimony and you know it's true because I swore myself in on a 1959 RCA Receiving Tube Manual.
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
I built this based on the Fuzz Dog board. It's based on one of Brian May's early treble boosters after he stopped using his old Rangemaster. It has a very distinctive sound. It uses a dependable, low-noise 2N5088 silicon transistor to achieve a Rangemaster-style treble boost that becomes a bit on the gritty side as you crank it up. This kind of boost works extremely well with a low-gain amp like an AC30 or an old Marshall JTM-45. They're a nice "pre-conditioner" that shapes the signal that the amp clips and they add a tiny bit of distortion that helps make the overall grind a little more complex.
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
Drilled this case for a centered pot and didn't even think about the pre-drilled DC jack hole that would conflict with it. $20 case wasted.
Here's a variation on the old Rangemaster treble-booster pedal. My version is made with a new-production AC128 Germanium transistor. The hFE measurement for this transistor was 56.
If you haven't ever used one of these, the idea that it's a treble-booster is kind of misleading. I mean, it does do that. In fact, it's excellent if you have a JTM45 or an AC30 that sounds kind of, "tubby" or, "farty." It's how Clapton got his, "Bluesbreaker" combo to sound the way it did. Brian May used one on the early Queen albums. Of course, Tony Iommi used one right up until the late 70's. See, germanium transistors are little amplification devices and they aren't very good at it. So even though this isn't a fuzz pedal, it isn't clean, either. It distorts the signal as well as changing the tonal spectrum. At unity gain it will be a little gritty. If you use it as a volume-booster it will be more gritty. In my opinion, this is cooler than most fuzz pedals. It gives you kind of a cool, bright tone, but it also "pre-conditions" your sound so a slightly overdriven tube amp sounds more aggro without being obviously fuzz-toned. It's a very cool and subtle effect. I never owned one, but I've always been curious. Now that I've tried one I plan to build more of them.
I cut the board out of Garolite G10, so you know it will last forever. Then I stake the board with turrets and hand-wire the whole dealie right here in the Fool Audio Research World Headquarters!
It's got a DC input jack, but remember that this is a positive-ground pedal and you'll need a polarity adapter if you want to use it with a standard wall wart. Or you can use it with something like Fulltone FPS-2 that's set up for positive-ground.
You know it, you love it...the sound that Tony Iommi used to take you to the netherworld! Hand-wired for her pleasure! It's the Fool Audio Research, RAGEMASTER!
It lives!
Lemme tell you this story that I probably shouldn't tell you.
SO, I started trying out transistors in it and every one of them sounded small and farty. I'm all, "WTF?" Then I realized I hadn't plugged in the power adapter. Rangemaster circuits draw SO little juice that it was working off just what hadn't leaked out of the capacitors overnight. Kind of amazing, really.
Anyway, I plugged it in and it roared to life. It's got an AC176 in it now that I measured at 87 hFE. Slightly hotter than I normally pick for a Rangemaster, but it's got some go-go. Cranked all the way up, it's almost a fuzz. At 1-3 o'clock it's gritty and mean. Which is why Rangemasters are still my favorite pedal.
Here's something I haven't tried before. It's the Small Bear, "Oh My Darlington Rangemaster" PCB, which I'm building out as their Sziklai pair Rangemaster.
This particular build is using a pair of vintage transistors. In Q1 is a gold-lead 2N3724 Silicon NPN transistor with an hFE of 39. The recommended maximum for Q1 was 40.
Q2 is a Germanium PNP AC128 transistor with an actual hFE of 57. The recommended maximum was 60.
So in a Sziklai complimentary feedback pair, the transistor in Q1 sets the polarity. Normally a Rangemaster is a positive-ground pedal, but this will be a, "normal" negative-ground pedal, while still achieving much of its sound from a PNP Germanium transistor. The Sziklai complimentary pair should be much more stable under a wider variety of operating conditions than a standard single-transistor PNP Germanium Rangermaster circuit, as well. I'm quite curious about the outcome.
The sole drawback I can find with this concept is that it's very hard to find Silicon transistors with an hFE that low.
If you guys knew how many failures I suffer in a week, I'm not sure you'd give me your business. This is the second one today, as amazing as that might sound. Seems like it should be fine. Correct voltages where they're supposed to be and all.
Of course, this perf board and my old cataract-y eyes don't care much for each other. The reflection off the back blinds me and I can't be completely sure I haven't grounded out pads against each other. So that's probably it. Somewhere really important the signal is probably going to ground because I'm old, blind and not all that coordinated.
Still, some days are really disheartening.
I need to work BIG. Like turrets the size of sewing bobbins with automobile jumper cables clamped to 'em.
This is the bias voltage setting of the most recent Tesla Booster I built. It's kind of amazing how the individual transistor will tell you how much juice to feed it. I mean, the meter helps...a LOT sometimes, but there's usually a spot where the sound gets a little louder and more focused and that's probably where you want to stop turning the trimmer. Although it's extremely reassuring to see that fall inside the recommended range of 6.8 - 7.1 volts. In this case the sound was a little bit beyond that range, but not by too much.
So this turned out pretty cool. It's kind of like a Rangemaster with a Varitone. The red knob is a four-position rotary switch. It chooses between 4n7, 10n, 22n and 47n input capacitors. The original Rangemasters used 5n, but that's not a common value these days, so most people use 4n7 because it's close enough (for rock 'n roll, yo!). The 10n is much nicer, IMO. Still kind of thin and mean, but with more mean. The 4n7 is a little anemic when you hear it A/B'd with the 10n. The 22n is probably the perfect, "Iommi" cap. It's not quite full-range, but has much more complex mids. Then the 47n is pretty much full-range and a little tubby for my tastes.
Very cool. I was thinking this prototype would give me a good idea where to change the choices of capacitors, but I think these four may be just about perfect. Which is odd, because I usually have to do it wrong 37 times before I get what I'm hoping to get. Heh...
High(ish) Tech (E-Ink) and Low(ish) Tech (Breadboard Treble Booster) don't have to be mutually exclusive.
A pair of Tantalum pearls on this treble booster. Some red WIMA goodness, as well. Dig how that tiny blue 47 pF on the left made it possible to use one of the rotund WIMA caps.
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