Bluefender92 said: Anybody point me in the direction of a SS guitar amp kit? Preferably with step by step guide. Thanks in advance Click to expand... Not a kit - but rather close:
I've build my own version of Rod Elliots 100W guitar amp (https://sound-au.com project #27) for my son, and he was quite happy with it.
It can be scaled down by using a smaller transformator or by just using an 8 Ohm speaker (currently I have 25W with a Celestion A-type 12 speaker).
Amp And Speaker Selector
You can get the PCBs from Rod E - and then it is just a matter of getting the components. The description with the project is semi-detailed - but have a look for yourself.
What sort of amp? A little toy one for living-room use? A big loud one that will make you a social pariah and set tongues wagging in the village/housing complex?
Since thoglette suggested a little toy amp: Digikey sells a nice little LM386 amp already built on a little PCB, ready to go: https://www.digikey.com/en/products/detail/dfrobot/DFR0064/6588477
Output Tube Interchangeability
It can be powered by an old USB charger (5V DC), or a 9V flat battery, or any small DC power supply up to 12 VDC, say, 9 V.
By itself, the board has no volume or tone controls, and will have the typical too clean until it suddenly becomes too dirty characteristic when you plug a guitar in. It may also have an input impedance that's a little too low to be ideal for an electric guitar. But it might work well with an electro-acoustic guitar, which has its own onboard tone controls and preamp.
If you want to use this with an electric guitar, you can easily add a simple preamp in front of it to sweeten the clean tones a little bit. A single JFET is a good start; try using it configured as a Fetzer Valve http://www.runoffgroove.com/fetzervalve.html ).
Percolator 2w Tube Guitar Amp (valve Amp) Diy Kit
I would suggest using a 10k trimpot for Rd, rather than a 50k one. 50k is really too large, and will end up set to nearly one extreme. A 10k trimpot will be less twitchy to set.
This still has no tone controls, and will sound midrange-dominant and dull until overdriven. If that's not to your taste, Runoff Groove has several other (more complex) JFET-based circuits that you can place ahead of the Digikey LM386 board.
The J201 FET or MPF 102 FETs used in some of these old circuits may not be available any longer. If this idea appeals to you, we can help you find a JFET that is still available, and which will work in this circuit.
Diy Amp Baffle
No big deal about the power amp, any size available, its power supply, etc. ; the problem will be a dedicated Guitar Preamp.
Rodd Elliott offers many power amps but one Guitar preamp; if you can get the boards from him you can save on postage by ordering all at once in the same package.
1) Rod Elliot´s, only current full and well documented SS Guitar Pre and Power Amp, read it a few times at least to have an idea of what you need:
Diy Audio Projects Forum • Rossd's Kalamazoo Model 2 Guitar Amp
Marshall Guv´nor and is descendants are basically a Marshall SS preamp inside a pedal and can straight drive a generic SS power amp.
Besides this: It seems like Bluefender92 has gone away - or simply has not realized the thread has been moved to this forum
JMFahey said: ...preamp style guitar pedal... Click to expand... This one (Flamma Preamp) is very hard to beat in terms of bang for the buck.
How To Build Your Own Mini Altoids Guitar Amp For About $5 « Mad Science :: Wonderhowto
Honestly, even if you set price-point considerations entirely aside, the sound quality is excellent by any reasonable standard; the only trouble is, there's nothing left to DIY!
Everything, from very good amp simulations to speaker cab simulation, is already inside the Preamp. All you have to do is run your guitar into it, and run its output to a flat frequency response powered speaker (or a headphone amp).
You get 14 different simulations - models of 7 different famous tube guitar amps, each one with a clean and a dirty channel, for a total of 14 distinct sounds. Want an instantly recognizable Fender clean tone? Model 1 on the clean setting has what you want.
Solid State Guitar Amp Forum
This is the kind of versatility that you really can't get out of an analogue guitar preamp, whether toob or solid-state. Digital modelling does it easily, but until just a few years ago, every digital guitar modelling device I heard sounded like garbage, at least until you got well above the $1000 USD price point.
But, at least to my ears, that has changed dramatically in just the last year or two. The Flamma Preamp is the most striking example I know of.
Since the Preamp's output is an instrument-level audio signal, you can run its output into any favourite guitar FX pedals you own. This lets you easily do things like have reverb and delay after the (Preamp) distortion, which are otherwise impossible with a real guitar amplifier except in studio situations. (You can't run the speaker-level output of a guitar amp through your Hall Of Fame reverb pedal.)
Diy Fender Champ Guitar Amp| Builds And Project Cars Forum |
Of course you can also put any of your FX pedals at the input of the Preamp, as you normally do with any real guitar amp.
In the Covid era, loud amplifiers are completely out of the question for those who, like me, live in apartments. So my living room guitar setup is now based around a Flamma Preamp, a couple of other guitar pedals, a home-made headphone amplifier, a pair of small mini-Hi-Fi speakers rescued from a thrift store, and a little Lepai class-D power amp. If the TV is off, I play through the Lepai and speakers; if the TV is on, or it's late at night, or I just want a bit more SPL at my ears, I use the headphones.
In any case, there siill is a lot to diy: a power amp, its power supply and the speaker cabinet, which in trye Guitar amp combo tradition, should be all together with a handle on top he he.
Tube Town Store
Suggestion:for home/garage use in Covid times, one solution could be a 15W amp (TDA2030/LM1874 based) with its own power supply or a similar Class D one fed from an old laptop brick , driving a guitar 6/8/10 speaker (suggestions below) which is a most important part of sound, forget Hi Fi speakers, all inside a small wooden cabinet, you can even buy one of those cheap grey carpet covered (or uncovered, just paint them black) car speaker cabinets, dirt chep, and mount electronics and speaker inside.
TDA2030/LM1875 is a great chip amp for a portable combo. With a good guitar speaker these things can get pretty loud. You can use the preamp's output level as a master volume though and dial it down to really low level for home use.
Shanx said: TDA2030/LM1875 is a great chip amp for a portable combo... Click to expand... Particularly for a portable guitar application, I think there are overwhelming advantages to using a contemporary class D amplifier board, rather than an much older class B design (popularly but rather incorrectly referred to as class AB).
V6 Plexi Headshell And 2x12 Cab Build Complete!
But the fact of the matter is that we have no idea what the OP actually wants...or wanted, nearly two weeks ago.
True a Class D amp may be the way to go, you could fit those boards into a pedal enclosure too. I haven't played around with them but
Saw a few TPA3118 based modules that are really tiny. Maybe one day I'll wire one up and see how it compares.
El84 Diy Amp Project, Part 6 (conclusion): Sonic Evaluation And Output Mode Options
Kay Pirinha said: Rod Elliot's designs appear to be great. Click to expand... ...with the usual proviso that it will sound like every other high-NFB solid-state guitar amp: clean tones will be too clean, sounding thin and cold when you play an electric guitar through it.
My experience is that this sort of Hi-Fi clean preamp works well for electro-acoustic guitars, acceptably for hollow-body archtop electric guitars in a jazz context, tolerably for semi-hollow electric guitars (like the ES-335), and very poorly for solid-body electric guitars ('Strats, Les Pauls, etc).
Too-clean is not the only problem with this type of SS guitar preamp, built around op-amps and textbook Hi-Fi building blocks. Elliot claims his low-impedance diode clipper (D2/D4/R14, here: https://sound-au.com/project215-p27-revisit.htm) will distort less harshly than more common higher impedance versions of similar circuits. That may be true, but only a mother, ahem, Hi-Fi audio engineer, could love the raw sound of an electric guitar fed through two reverse-parallel clipping diodes.
Amp Stands... Diy Alterntives?
Physicist John Murphy figured out, decades ago, that for overdriven guitar to sound good, the duty cycle of the output waveform needs to vary with signal amplitude. This happens automatically with vintage capacitor-coupled guitar amplifier designs, as average bias current through the various gain stages unintentionally shifts with input signal level, due to the nonlinearities in the amplifying device.
However, duty cycle modulation doesn't occur at all with textbook op-amp gain stages, or the sort of anti-parallel clipping diode approach Elliot uses in his preamps. Instead you get a predictable and perfectly symmetric output waveform, which sounds like a predictable and boring buzz.
John Murphy designed
0 Response to "Guitar Amp Diy Forum"
Posting Komentar