Hi all!
I'm new to designing/building amplifiers, and after some reading on robrobinette's website I thought I'd design a simple Bass amp I plan to build whenever my wallet stops looking as empty as the tone this will produce
Ofc, since I have no way to verify if it will work, I was hoping some better informed people here could tell me. So will it work in it's current form? And if not, what changes should I make?
Thx
Hello all!
I'm u/Calculagraph, one of the new mods in r/DIYGuitarAmps, along with u/Available-Ad-8045 and u/ArtSynth. And I wanted to take a moment to make an introduction and solicit opinions from the members of the sub on a thing or two.
First things first: if you're one of the 70+ people that were waiting for approval to post, I am sorry it took so long. Since we're now actively moderated, we've dropped the requirement that posters must be approved, so please utilize the report function if something does not fit the sub. We'll definitely reassess if we're inundated with low effort or off topic posts in the future, but at the moment, the thought is that we're better able to discuss things if we can post things.
On the topic of rules; We have rules now! They are as follows:
1 Keep it civil.We're here to talk about amps. There's not much reason to get all that worked up on the topic, so we shouldn't need to get all worked up. Be friendly.
2 Don't give dangerous advice.Big noise requires big power, and big power is not a healthy addition to one's diet. Do not give advice that will result in harm to the user or damage to the device.
Keep in mind that AI is prone to mistakes, and mistakes can be potentially fatal in the case of amplifiers. Please refrain from posting AI designed circuits for this reason.
3 DIY is DIYHow do you know if you're in the right place? Well, if you're doing something to a guitar amp, and you're doing it yourself, you're in the right place. Hand built rigs, self-repaired PCB's, rehoused units, all of it.
4 Respect CopyrightLet's keep it on the up-and-up. Feel free to link anything published online and to share your own designs, but please don't share anything with an active copyright.
5 We're not a marketplaceThere are some impressive builds and builders here and we totally support seeing them making money with their skill, but we want this place to be primarily for discussion and sharing. If you want to advertise here, and think you can do so in a way that will benefit the community, please contact the mods to discuss your idea.
I don't think they're all that restrictive, but I am happy to discuss them with members. This is a community and the community should have say in how it's regulated. I, personally, think the mod team hit the right notes, but let us know if we're not in the right key.
So, now the big ask. I am not a visual artist; my medium of preference is vibrating air. Having said that: we are in need of a banner. Now, I could GPT some slop to throw up there, but that feels disingenuous. I'd rather solicit free work from the members of the sub, and have them lightly judge each other like a middle school clique. Is this something we'd be in to?
That's all I've got at the moment. Chime in below, let us know how you feel about the way things are looking, and let's get this place back on its feet.
- u/Calculagraph
Hey guys i cant seem to find anyone near me to fix my amp so im tempted to try myself. I know even unplugged you can get killed fiddling round inside er so i know i will need something to test if theres voltage, something to soak it up, some insulated tools i guess. Any other tips or advice for what i may need? I also have soldering gear
Many thanks in advance
also amp is as pictured and all lights up well but just zero sound
I really love solid state amps and a while ago I finally got my hands on an old Yamaha G100iii head. It came in really good condition, only missing the reverb tank and the footswitch. Reverb tank was easy to get as a new spare part but the original footswitch is almost unobtainable nowadays.Since Yamaha is always doing its very own thing, there's no other functioning and compatible footswitch than the original one.
After doing some research I stumbled across the original service manual including a detailed wiring scheme of the footswitch. So I decided to build my own.
It's a fairly umcommon wiring, using different combinations of resistor values and LEDs to engage 3 different functions.
Since I built it from scratch I also decided to improve the visibility of the switch functions by painting different color fields onto the housing, each matching the knob color of the amp function it engages.
Red is FX Loop, green/blue are Channel A/B and yellow is Parametric EQ
I also added a Yamaha decal. This was my very first project of this kind, my soldering skills had been limited to guitar wirings before but now I started working on pedals too. The resistors I used are ridiculously oversized though and I wired the LEDs wrong at first.😄
Nonetheless I'm really happy about the result, the footswitch works flawlessly and it matches the amp really well. 🙂
Does anyone know how to add a gain knob alongside the volume that controls the normal channel? That way the gain knob controls how hard the tube gets pushed and the volume would act as a "master volume" of sorts This layout has the extra tube slot and it seems doable.
PS. I posted this same question yesterday and deleted it. I kind of got in my own head after a couple of sarcastic responses. Honestly I'm building this amp as my first one because I got a broken DRRI and a bunch of parts that will work. I'm not gonna build a 5e3 into a DRRI chassis. That would be kind of a waste of space and i'd have to go buy more parts. I also don't have the money to pay someone to put everything together for me. The parts are at my house so, i gotta try and do it myself. Sorry I'm not made of money (seriously, some of you talk about amps and amp work like it's all super easy to afford. Not everyone can, which is why they end up in spaces like this.
Why not give a safety recommendation rather than saying "hope you don't kill yourself" or acting like resolving to try is the same as being too arrogant to listen to folks with more experience than you? Give a helpful rec, explain why something is more work than it's worth. I can't hurt you for not thinking something is a good idea, so no one needs to defend their view in a condescending way. Thanks for all help in advance, I truly appreciate it!
I know they’re cheap, and it’s fine if I have to buy one…but I also have a spare speaker cable sitting right here 🤷🏻♂️
A while back I made this adjustable chassis stand and thought it would be appreciated here. It has both width adjustment and selectable angles. Made with sapele. Cheers.
It's not incredibly exciting yet, a bog standard build, but I came at it with the intention of building a mod platform for myself. I had been using a '68 CDR, but the PCB build leaves no room for tinkering, and cost-saving measures made some choices I didn't like, so to Mojotone I went.
It's a to-spec AB763 Deluxe Reverb at the moment, with a Mids pot added to the Normal channel. I'm thinking of re-voicing the normal channel into something a little more "Bri'ish," and intend on repurposing the vestigial ground switch into a bias switch, but those may have to wait a bit; I have an old Bell and Howell media amplifier that I intend to refurbish and convert.
You guys have any favorite mods for these?
Hello all,
This is my first tube amp build, I have made a few guitar pedals before. It is based on the schematic for Orange Tiny Terror, but with some tweaks for more gain and more low end. The goal was to get some nice doomy fuzz tones, similar to the OR series amps from the 1970's. I also used an oversized Hammond output transformer with more linear frequency response in an attempt to get more low end punch too. The TT circuit is nice because it has the master volume after the phase inverter, which means you get some clipping from the PI already at low volumes.
The housing is made from pine planks purchased at IKEA (I am Swedish after all), the front panel and tolex is quite amateurish but it turned out nicer than I expected. I dont have any workshop so everything is made at the kitchen table. My wife is very understanding and supportive.
I made a very basic sound clip using my phone, sound quality is not great and my guitar playing is even worse, but maybe it gives an idea what it sounds like:
Single channel, 40W blackface circuit in a DR chassis. Added a LAR/MAR PPIMV and Effects Loop.
Customer is looking around for a custom faceplate. In the meantime, I painted it and put a few stickers 😀
Better hope it works, I’m in a band with this guy and we’re playing a road gig and will be together all weekend. It’d be really awkward if it shits the bed 😂
You can see neither the shiny chrome chassis nor the speaker will fit inside without wood disassembly. First, take off the fur to show the joinery. The Eminence reminds me of Art Blakey's Evidence which I must listen to. The 89.27% complete Fender clone/replica could only go inside with much routing or dado-ing; or in a box fastened to the back (tubes pointing down) or an aluminun sheet bottomcover/mounting plate screwed to the top, valves pointing back after removing the dumbass carrying handle. What do you think?
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Hello everyone! I’ve got a bit of a crazy project concept idea. and love my Vox Ac10 to death. I currently use it as an amp head with a 112 cab as its light weight and still loud enough.
I’m moving away for school soon, and need a way to make my Vox ac10 even more compact somehow. My initial idea is to remove the speaker that’s not being used (making it lighter) and finding a way to saw/cut the as much as the bottom off before I hit the tubes that are hanging. If not that. I’ll see if it’s possible to place the tubes elsewhere (probably beyond my scope) I’m pretty handy with word working, and can even retolex the amp myself. Although electronics is where I’m not the most savvy. Just want to ask some experts what immediate problems I’ll run into with this crazy idea. Thanks everyone!