Wikimedia Commons

File:Technics RS-M270x dbx NR pcb.jpg

Original file ‎(2,000 × 1,677 pixels, file size: 1.07 MB, MIME type: image/jpeg)

Captions

Captions

Pars of the Technics RS-M270X cassette deck

Summary

edit
Description
English: Pars of the Technics RS-M270X cassette deck. This 1981 model, built on the already outgoing M85 platform, was the company's first deck with dbx noise reduction. This is the dbx board, with 9 ICs and 43 discrete transistors for just two dbx channel (a two-head deck did not need four channels). Obviously, such huge boards for just one NR system were an overkill, and in the same year Panasonic introduced the single-chip AN6291 dbx. This became the company's reference design all the way to the TOTL models like the RS-B100.
Русский: Внутри кассетной деки Technics RS-M270X. Эта дека, построенная на двухголовочном, трехмоторном шасси семейства М85 - первая для компании дека с шумопонижением dbx. В 1981 году другие модели семейства уже сняли с производства, но надо было срочно выкатить на рынок что-то с dbx. Взяли уже исключенную из плана продаж модель M45, пришили к ней гигантскую плату dbx, и с минимальными изменениями получили 270-ю модель. На фото - плата dbx (9 микросхем и 43!! транзистора), имплантированная в старую платформу. Разумеется, для массового рынка такие монстрозные платы СШП были запретительно дороги, и в том же 1981 году Panasonic вывело на рынок специализированную ИС СШП AN6291. На ней-то и строились все позднейшие модели, включая топовую RS-B100.
Date
Source Own work
Author Retired electrician

Licensing

edit
I, the copyright holder of this work, hereby publish it under the following license:
Creative Commons CC-Zero This file is made available under the Creative Commons CC0 1.0 Universal Public Domain Dedication.
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighboring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current01:59, 3 December 2021Thumbnail for version as of 01:59, 3 December 20212,000 × 1,677 (1.07 MB)Retired electrician (talk | contribs)Uploaded own work with UploadWizard

You cannot overwrite this file.

There are no pages that use this file.

Metadata

This file contains additional information such as Exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. The timestamp is only as accurate as the clock in the camera, and it may be completely wrong.

Retrieved from "https://commons.wikimedia.org/w/index.php?title=File:Technics_RS-M270x_dbx_NR_pcb.jpg&oldid=662098536"