Hiwatt has been proudly crafting truly handmade amplifiers and cabinets, serving the worlds best players since 1966. Hammond is now making output transformers with normal 04816 secondaries. Hiwatt custom 20hd mini stack is well, a mini about 43 inches highversion of the hiwatt stacks two channels, clean and distorted works off. My head is behind an amp roost middle hiwatt clone 70 with partridge transformers and everything. He began using the hiwatts model after using modified sound city l100 sc105 amplifiers with hiwatt badges, which he used beginning late 1968. Check out the hiwatt story for more information on the hiwatt tube guitar amps. Hiwatt tube amp schematics, hoffman amps tube amp schematic library hiwatt. The amp is a bit noisy at home or at rehearsal, i mean. This is basically the standard 50 watt hiwatt chassis, mounted upsidedown with most of the labelling reversed to accommodate the upsidedown mounting. Lr112 the little rig companion cabinet 1x12 english faneloaded speaker cabinet. It certainly seems that whoever designed it took a look at hiwatt schematics or has access to info we dont have. Hiwatt cp103 and dr103w pete townshends guitar gear. Hiwatt custom superhi 50 head 50 watt guitar amp maxwatt amplifier.
Free electronics schematic diagrams downloads, electronics cad software, electronics circuit and wiring diagrams, guitar wiring diagrams, tube amplifier schematics, electronics repair manuals, amplifier layout diagrams,pcb software for making printed circuit boards, amplifier design software cad for drawing circuit diagrams free download. If it isnt loud enough, there is something not working properly in the amp, the speakers are very inefficient or you just need a bigger amp for the gigs you do. According to kee mayer, engineer and builder at the current hiwatt manufacturing facility in doncaster, england, reeves designated the original dr103 circuit with the letters ap because pulling two el34s resulted in a 50 watt amp thats more all purpose. Combo amps free delivery possible on eligible purchases. If you are buying a hiwatt item mail order unseen, purchase it from a reliable source in america. I recently got my hands on a brand new reeves custom 50 amp. Grille back panel hiwatt dr103 custom 100 custom 50 custom 200. Dig up some old hiwatt schematics and marry the class a power section from ax84 to a hiwatt s preamp section and youll have your own custom 7 for chump change. Like all reeves amplifiers, the custom 50 is entirely hand assembled using only the finest quality components assembled. Free electronic schematic diagrams, electronics cad software, electronic pcb software, guitar wiring diagrams, amp schematics, repair manuals, amplifier layout diagrams,pcb software for making printed circuit boards, amplifier design software cad for drawing circuit diagrams. I bought an nos mullard cv4024 12at7 for the phase inverter. Their model 1650ta is good for a 100 watt and 1650ka for a 50 watt. Hiwatt higain 50 combo sch service manual download. One handdrawn set of schematics has been widely circulated, and published in.
One handdrawn set of schematics has been widely circulated, and published in both pittman and webers books, and a few audio brothers schematics have been seen in the wild. Its a great time to upgrade your home music studio gear with the largest selection at. Its actually for my reeves custom 50 which is a 70s hiwatt replica. Hiwatt diagrams, schematics and service manuals download for free. Hiwatt electronics limited free company information from companies house including registered office address, filing history, accounts, annual return, officers, charges, business activity. With amplitube custom shop youll have access to every piece of gear from all. Buzzaround fuzz les paul to hiwatt custom duration. Hey guys, so i was in the pawn shop yesterday and i came across a hiwatt custom 50. Shop gear, merch, and more on the hiwatt reverb store. I throw my tube driver in front of it and crank the gain on the pedal and it does. Ill be adding more brands and schematics in the near future. And now, please take a look at this 400 watt power supply schematic on which this amps power supply is modeled on. As far as i can tell its a 1977 according to this site mhuss hiwatt amplifier pages dating info model number dr505 and serial number 11776. When you buy products through links across our site, we may earn an affiliate commission.
Check the huge library of schematics here design your own custom turret board or eyelet board diy layout creator file analyzer program diy layout creator file library. Ive got a hi octane i built from the schematics on that site and its a single ended amp or class a, if you will. It will not actually sound like a vintage hiwatt without el34s i own a reeves custom 50 jimmy and custom 225 the 50 is way plenty loud for almost any application and gets the goods at more earclub friendly volumes. Normal volume and bright volume, bass, middle, treble, presence and master volume controls. Hiwatt dr504 custom 50 watt guitar amplifier head, a custom 50w head with 2 x. Rare hiwatt mica 220pf cap for tone stack you are viewing a auction for one old tested lemco mica 220pf as used in vintage hiwatt dr 50 watt or 100 watt amplifiers. Hiwatt dr504 custom 50 watt guitar amplifier head sonic circus. The hiwatt custom 50 dr504 is the original alltube 50 watt hiwatt head that preceded the reissues of the 1990s. Ive never seen a schematic of this circuit, and i created this one by reverse engineering, using detailed photos.
I still have the original mullard valves, i was told by my amp tech that they have 6070% life in them so i just kept them. That said, a 100w or 50w hiwatt circuit running wide open with maximum power. Get the best deal for hiwatt guitar amplifiers from the largest online selection at. Servicing of a hiwatt dr405 400 watt clone amplifier. This page is my attempt to correct the general lack of schematics and technical information about hiwatt amplifiers.
Space cowboy reeves amplification reeves amplification. Hiwatt custom 20hd mini stack the big companies all seem to have these mini stacks. As this section is responsible for a huge amount of trafic each month ive decided to run a. Heyboer transformers in michigan, usa, is now making hiwatt style ots, using highgrade lams and winding patterns like the original. Assuming all the hiwatt amplifiers use pretty similar circuitry i worked out the most likely power supply, output and preamp schematics. All original internally apart from the new el34 valves. The space cowboy is an extension of our very successful custom 50, widely acclaimed for its articulate note definition, high headroom and an exceptional clean tone. Hiwatt schematics, service manuals and owners manuals archive. See mark husss hiwatt site for a lot more technical information. Hiwatt sa112 bulldog custom hiwatt 50 series combo amplifier schematic contents. This site helps you to save the earth from electronic waste. Service manuals, schematics, eproms for electrical technicians. Amounts shown in italicized text are for items listed in currency other than canadian dollars and are approximate conversions to canadian dollars based upon bloombergs conversion rates.
Cant say about the combos but as others have mentioned if you are looking for something that has loads of clean headroom, depending where you are playing a. I have a reeves custom 50 with 2x12 cabinet with vintage purple, i use evidence audio cables for guitar and for the amp and cabinet. The first actual hiwatt labeled models featured the same circuit as the cp103 but did not feature the the who branded control panel faceplate. In fact, what may appear at first as a simple variation and copy on the marshall superlead in what was the form of the hiwatt custom 100 dr103 head, further examination quickly. I played a hiwatt custom 50 into a marshall 4x12 for years. I didnt have a lot of time to check it out because they were closing up but it looked to be in good condition.
The hiwatt 200 watt amp does infact follow this type of design and gives the expected 200 watts please see this 200 watt power supply schematic below. The utilization of a two knob reverb, over a standard one knob, enables the user more control over the reverbs character and intensity. Hiwatt has proudly crafted truly handmade amplifiers and cabinets, serving. By converting watts to loudness, a 30 watt amp is 86% as loud as the same type of 50 watt. Its not as loud a a 50 watt marshall but it in not a weakling among amps of its rating either. Make offer grille back panel hiwatt dr103 custom 100 custom 50 custom 200. Dr504c212 custom hiwatt 50 combo w 2x12 english fane speakers. Hiwattreeveshitone custom 50 vs custom 100 the gear page. His answer to his critics was they dont have the amp in front of them he admitted he didnt know what to do for the hum.
At some point, the circuit was changed to use input 1 and pi 2 this version is represented by the audio bros and hiwatt. It needs to be noted that hiwatt was not one of these companies. Free hiwatt diagrams, schematics, service manuals schematics. Hiwatt reeves custom 50 with a bkb 911 tube driver louder than words. I have a hiwatt custom 100 dr103 from 1970 or so and it feeds a 15 trace elliot cab for bass or various other cabs via a thd hotplate just to take 4 dbs off or so for guitar or reamp things thats why i.
I think they were talking about the amp i posted, the hiwatt custom 20, when they said hiwatt in. Stage, 4 x ecc83 pre amp valves and handwired in england with hiwatts original circuit. Overviewconstructed to the exact same specifications as 1970s british design with partridge replica transformers, dual channel preamp with 4 inputs 2 normal, 2 bright. Last week i have ordered an nos mullard cv4004 for the v1 position. Here youll find a modest collection of some interesting tube amplifier schematics. Its a modern sounding rock amp, far from the classic tones of a hiwatt or fender. Its a revolutionary concept for software that was inspired in part by johnny cashs. I waited a few weeks before spouting off about it can be had between 150.
The dr103 circuit was identical to hiwatt s 50 watt custom 50 dr504 amp, but it doubled the number of el34s for twice the power. Hiwatt l50r l100r sch service manual download, schematics. These are placed right in the treble tone stack for a hiwatt. Preamp valves and handwired in england with hiwatts original circuit. Hiwatt has proudly crafted truly handmade amplifiers and cabinets, serving the worlds best players since 1966.
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