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all the datasheets you'll ever need Transistor substitution database: maybe you do have transistor you can use! IC Manufacturer Logo Database: identify the manufacturer of an IC by using this extensive, alphabetical database Analog Alchemy: tips, tricks and caculators to help you tweak your circuit right Boss Serial Decoder get exact dating on your Boss pedal Pedalheaven.com: another reference site about stompbox effects Muzique.com: Jack Orman website with excellent stompbox projects, articles and info RG Keen's Geofex: RG's effect and guitar amp website, one of the most thorough ressources on the web Tim Escobedo's Circuit Snippets: original and outlandish effect designs, lots of them Doug Hammond's DIY Guitar Stuff: a web archive of Doug H's experiments with amps and stompboxes. Viva-analog.com: JC Mallets in-depth website on advanced stompboxes and guitar amps John Hollis' website: original designs, tweaks and a lot of idea and schematics Ampage Effect Forum Archives 1996-2001 : 151,980 posts in 27,796 threads - the early stompbox beginnings Ampage Effects Forum: current diy effects discussion on Ampage DIY Stompboxes Forum: a vivid community where you will get all your answers - the ultimate stompbox forum Forum: lots of info on tube amp and pedal mods and builds.
But I suspect that even later models were built for Sears by others, maybe using leftover Danelectro parts?
UPDATE: I recently noticed that the schematic diagram for the Harmony H303A is nearly identical to the Silvertone 1420 and Sears 5XL.
I have seen several different builds of the Sears 5XL amp on e Bay and elsewhere on the web.
But the original manufacturer of the Sears 5XL is hard to nail down.
Ampage Effect Forum Archives 1996-2001 : 151,980 posts in 27,796 threads - the early stompbox beginnings Alt.guitars.effects discussion group: guitar effect discussion from 1997 on The Gearpage - Effects Discussion: not directly diy oriented but a lot of traffic and diy awareness.
If you're into the vintage side of things, I'll quite happily post detailed gut-shots and specs of any of my collection of Colorsound, EH etc etc....... this one Doug Hammond's DIY Guitar Stuff: a web archive of Doug H's experiments with stompboxes and amps.
Doug is way too humble about his contributions to the diy stompbox world. Never realized there were so many people intested in just vero layouts, you are not the first.
I have been looking for that pentode driver schematic for so long I forgot I was looking. Torchy made a bunch of vero layouts, and you could check the indexes for links:viewtopic.php? f=19&t=1295Anything in specific you're looking for?
UPDATE 2: This basic amplifier design was used throughout the radio and musical instrument industries for decades.Tags: Adult Dating, affair dating, sex dating