bond163 Posted March 29, 2005 Report Share Posted March 29, 2005 OK i can get schematics for heaps of amps ..... im looking to make between a 100w and 200w EL34's and 12AUX7's are the valves i'd like to use ... what ones would you guys make? i'd prefer a circuit that runs off 700v but if there is a 400v one, thats fine ... Quote Link to comment Share on other sites More sharing options...
lovekraft Posted March 29, 2005 Report Share Posted March 29, 2005 JTM50/JMP50 Marshall with a solid state rectifier would be my first choice - BTW, it's either 12AX7 or 12AU7. Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 29, 2005 Author Report Share Posted March 29, 2005 lol soz its been a long day ... 12AX7 Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 29, 2005 Author Report Share Posted March 29, 2005 (edited) hmmmm I found this 100w power amp shematic: http://www.firebottle.com/ampage/schems/mpwr100.gif but doesn't mention anything about voltages i can see it has two inputs and a nice easy rectifier, i'd prob stick in a bridge .. Edited March 29, 2005 by bond163 Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 29, 2005 Author Report Share Posted March 29, 2005 although this amp here: http://www.diyguitaramp.com/j50.html if i didn't cut corners ... could be exactly what im looking for Quote Link to comment Share on other sites More sharing options...
Marzocchi705 Posted March 29, 2005 Report Share Posted March 29, 2005 OK, im confused, are thoes squigles resistors? I always thought resistors were drawn as a rectangle? Quote Link to comment Share on other sites More sharing options...
bluespresence Posted March 29, 2005 Report Share Posted March 29, 2005 OK, im confused, are thoes squigles resistors? I always thought resistors were drawn as a rectangle? They are resistors. That's the way they are typically drawn in electrical schematics. I don't know where the rectangle thing came from but in the 25 years I've been reading schematics the "squiggle" is the standard way to draw them. Quote Link to comment Share on other sites More sharing options...
Marzocchi705 Posted March 29, 2005 Report Share Posted March 29, 2005 Hmm, ive been doing Physics for 4years, done a Standard Grade in it. Ive always been taught that the top diagram was correct. Now im really confused. Quote Link to comment Share on other sites More sharing options...
lovekraft Posted March 29, 2005 Report Share Posted March 29, 2005 Looks like you should have done that course in electronics instead of physics (j/k) - that's the standard symbol for a resistor in a schematic. Hey, don't take my word for it - take a look: Schematic Symbol Reference What Is A Schematic? Circuits The block symbol is used occasionally (often by engineers who aren't EEs), but it's not what most of us recognize - I think it's just easier to hand draw. Quote Link to comment Share on other sites More sharing options...
Musicmaker Posted March 29, 2005 Report Share Posted March 29, 2005 A Peavey XXX Stack would be my first choice. Quote Link to comment Share on other sites More sharing options...
mledbetter Posted March 29, 2005 Report Share Posted March 29, 2005 Man that Ruetz J1 sounds really nice. I toyed with the idea of building an amp for a while.. then guitar building seemed a lot safer Did I read right you want a 1-200 watt tube amp??!! My main amp is a 15 watt job and I user an attenuator on it! You can deafen someone quite adequately with a 50 watter. Quote Link to comment Share on other sites More sharing options...
sepultura999 Posted March 30, 2005 Report Share Posted March 30, 2005 the XXX is really nice for distortion, except the clean was kinda crap imo. Every peavey I have tried does not hold its own when it comes to clean, including the classical series. If you want clean, go with a fender. If you want the thick sludgy distortion, go with the XXX If you want a good rocked out one, nothing beats a JCM 800 lead series just my opinion. im looking to make between a 100w and 200w holy crap lol. My Fender Deville 4x10 is only 60 watts tube and the loudest i could have it in my house was 2 (out of 12) before the walls would start rumbling. If you live in an apartment please consider other people, unless you're trying to get evicted, or piss someone off -Jamie Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 30, 2005 Author Report Share Posted March 30, 2005 i'm looking to fill a park ... yer i've decided, im gonna make a JCM 800 Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 30, 2005 Author Report Share Posted March 30, 2005 JCM 800 Series 2203 Preamp 2203 Poweramp Master Vol preamp 2203 100w 2204 Preamp 2204 Poweramp Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 30, 2005 Author Report Share Posted March 30, 2005 does a 1959 superlead sound nicer? Quote Link to comment Share on other sites More sharing options...
Musicmaker Posted March 30, 2005 Report Share Posted March 30, 2005 I like the Marshall MG series....good combos. I gotta MG-100DFX, awsome sound, and just enough power. Quote Link to comment Share on other sites More sharing options...
sepultura999 Posted March 30, 2005 Report Share Posted March 30, 2005 http://www.guitare-village.com/amplis_24.php this is the one i am talking about it's 50 watts but it's a damn nice amp. Quote Link to comment Share on other sites More sharing options...
lovekraft Posted March 30, 2005 Report Share Posted March 30, 2005 Make a bare-bones non-master volume 50 watt JCM800 (I'd recommend the 1987 Std.) - if you survive that and still want more power, make another. If you're still not loud enough, try booking venues smaller than Iowa. Seriously, the massive power thing is like the redneck truck thing - it's inversely proportional to the size of a young man's ..., uh..., endowment! BTW, you are aware that making high-gain tube amps is complex, fiddly work, debugging builds can be exasperating (even for an experienced builder), parts are very expensive, and the high voltages involved are quite capable of killing you, right? Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 30, 2005 Author Report Share Posted March 30, 2005 the components aren't that expensive .... Quote Link to comment Share on other sites More sharing options...
bluespresence Posted March 30, 2005 Report Share Posted March 30, 2005 the components aren't that expensive .... I guess that depends on your income and what you consider expensive. Lovekraft has a GREAT deal of experience in this area and his advice on this topic is well respected on the forum here. Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 31, 2005 Author Report Share Posted March 31, 2005 yer i know, he's just warning me ... Valve amp construction ain't for the faint hearted Quote Link to comment Share on other sites More sharing options...
rob Posted March 31, 2005 Report Share Posted March 31, 2005 I would love to make a really nice valve amp that would suit me perfect, but it's just one of those things that I'm never gonna be able to accomplish just like that, will probably be one of those kinda things that I will do when I'm 50! Quote Link to comment Share on other sites More sharing options...
lovekraft Posted March 31, 2005 Report Share Posted March 31, 2005 Well, a set of transformers is going to cost you around $250 plus shipping, more if you buy the really good stuff, the tube set is another easy $50-$75, depending on your tolerance for cheap stuff, and that's just getting started! You'll probably end up spending between $500 and $700 for parts on a 50 watter, probably more if you use really good iron and tubes, and that's provided you have all the skills necessary to drill your blank chassis, make a cabinet for the head, build your own turretboard, and so on, and already own all the tools necessary to actually build the amp. I'm not trying to discourage you, but if you think it's not expensive, it might be time for a minor reality check! My biggest concern would be that you're trying to do a Marshall as your first build - lots of people who start out with high-gain amp project as their maiden voyage end up with a buzzy, unworkable modern sculpture of metal and glass, burnt fingers and no desire to build another one! Quote Link to comment Share on other sites More sharing options...
bond163 Posted March 31, 2005 Author Report Share Posted March 31, 2005 ok lol i respect you but, i can easily get stuff from an electronics wholesaler Tubes PreAmp - $15 Tube EL34 - Set of 4 off ebay $45 (aus prices) Transformer - http://www.siliconchip.com.au/cms/A_102096/article.html (i hav the rest) I have a Mill, 3 Routers, a Nice Nice Dremel with many accessories a drill press, what else might i need to make a nice shaped cab ps. i am gonna make a 15w valve before diving deep, but i'd like to plan ahead .. Quote Link to comment Share on other sites More sharing options...
mledbetter Posted March 31, 2005 Report Share Posted March 31, 2005 ok lol i respect you but, i can easily get stuff from an electronics wholesaler Tubes PreAmp - $15 Tube EL34 - Set of 4 off ebay $45 (aus prices) Transformer - http://www.siliconchip.com.au/cms/A_102096/article.html (i hav the rest) I have a Mill, 3 Routers, a Nice Nice Dremel with many accessories a drill press, what else might i need to make a nice shaped cab ps. i am gonna make a 15w valve before diving deep, but i'd like to plan ahead .. ← uh.. i'd aim a little higher than 15 dollar tubes.. I researched amp building for a LONG time and didn't bother because of the expense.. that and the lethal voltages but if you're building a marshall clone then if you want the sound you have to source the RIGHT parts.. not the cheapest.. mallory caps, proper transformers wound to the right specs, most of the magic is in the parts. Otherwise, like Lovecraft said.. it will be all that work and not much to show for it. Check out the 18 watt clones. There is a forum dedicate to 18watt builders. Those are killer sounding amps. Tons of info, schematics and support by folks that are in the same mess. Google it, I can't remember the site name. Quote Link to comment Share on other sites More sharing options...
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