{"id":19383419,"url":"https://github.com/mdouchement/ampeg-b115r","last_synced_at":"2026-03-01T03:35:27.837Z","repository":{"id":79843965,"uuid":"386659355","full_name":"mdouchement/Ampeg-B115R","owner":"mdouchement","description":"Ampeg B115R tube preamp schematic","archived":false,"fork":false,"pushed_at":"2021-07-16T14:15:23.000Z","size":1522,"stargazers_count":0,"open_issues_count":0,"forks_count":0,"subscribers_count":2,"default_branch":"main","last_synced_at":"2025-02-24T17:17:20.055Z","etag":null,"topics":["12ax7","ampeg","ecc83","preamp","preamplifier","tube","valve"],"latest_commit_sha":null,"homepage":"","language":null,"has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":null,"status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/mdouchement.png","metadata":{"files":{"readme":"README.md","changelog":null,"contributing":null,"funding":null,"license":null,"code_of_conduct":null,"threat_model":null,"audit":null,"citation":null,"codeowners":null,"security":null,"support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null}},"created_at":"2021-07-16T14:10:12.000Z","updated_at":"2021-07-16T14:19:04.000Z","dependencies_parsed_at":null,"dependency_job_id":"e0a39203-ce98-49ac-8eba-f0faf38cee00","html_url":"https://github.com/mdouchement/Ampeg-B115R","commit_stats":null,"previous_names":[],"tags_count":0,"template":false,"template_full_name":null,"purl":"pkg:github/mdouchement/Ampeg-B115R","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mdouchement%2FAmpeg-B115R","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mdouchement%2FAmpeg-B115R/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mdouchement%2FAmpeg-B115R/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mdouchement%2FAmpeg-B115R/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/mdouchement","download_url":"https://codeload.github.com/mdouchement/Ampeg-B115R/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/mdouchement%2FAmpeg-B115R/sbom","scorecard":null,"host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":286080680,"owners_count":29959400,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2026-03-01T01:47:18.291Z","status":"online","status_checked_at":"2026-03-01T02:00:07.437Z","response_time":124,"last_error":null,"robots_txt_status":"success","robots_txt_updated_at":"2025-07-24T06:49:26.215Z","robots_txt_url":"https://github.com/robots.txt","online":true,"can_crawl_api":true,"host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["12ax7","ampeg","ecc83","preamp","preamplifier","tube","valve"],"created_at":"2024-11-10T09:26:07.976Z","updated_at":"2026-03-01T03:35:27.820Z","avatar_url":"https://github.com/mdouchement.png","language":null,"funding_links":[],"categories":[],"sub_categories":[],"readme":"# Ampeg B115R\r\n\r\nThis a homemade fusion of the Ampeg B15R preamp with the B100R 4 bands EQ.\r\n\r\n![B115R schematic](https://user-images.githubusercontent.com/6150317/125961237-3b1acd25-6e76-4b07-9555-f04c501ab61e.png)\r\n\r\n## Details\r\n\r\nAll the following section is based on the [B115R_preamp_schema.pdf](B115R_preamp_schema.pdf) schematic.\r\n\r\nInput:\r\n- 12VDC @ ~600mA\r\n- ~150mA of that is used for 12AX7/ECC83 heater\r\n\r\nExtra:\r\n- A long plate 12AX7 (JJ ECC803S) for V1 which adds more dynamics and improves the tonestack\r\n  - V2 is a JJ ECC83S (normal plate)\r\n- The trimpot can be a A1M or a B500K\r\n\r\n## Tools\r\n\r\n- [KiCAD](https://kicad.org)\r\n  - https://gitlab.com/kicad/code/kicad\r\n  - https://github.com/KiCad\r\n- [DIYLC](http://diy-fever.com/software/diylc)\r\n  - https://github.com/bancika/diy-layout-creator\r\n- [LiveSPICE](https://github.com/dsharlet/LiveSPICE)\r\n\r\n## Resources\r\n\r\n- https://ampeg.com/support/files/Schematics/\r\n- http://www.valvewizard.co.uk/index.html\r\n- https://www.ampbooks.com/mobile/amplifier-calculators\r\n- http://www.guitarscience.net/tsc/info.htm (tonestack calculator)","project_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmdouchement%2Fampeg-b115r","html_url":"https://awesome.ecosyste.ms/projects/github.com%2Fmdouchement%2Fampeg-b115r","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/github.com%2Fmdouchement%2Fampeg-b115r/lists"}