Home

Speaker power amplifier

Details: Category: Articles; Hits: 606

Czesław Klimczewski, "Speaker power amplifier"
Radioamator 1952/11

Many schools, club rooms and radioamateur wheels have radio receivers but they lack amplifiers, which would enable the playback of programs by a larger number of loudspeakers installed in the rooms. For those amateurs a description of the power amplifier with the method of its assembly is given. The amplifier connected in a suitable way to the radio receiver will allow to obtain the necessary electric power for powering several loudspeakers with a total power of about 15 or 20 watts, depending on the type of radio tubes used.

Tube Amplifier Concertino

Details: Category: Gallery; Hits: 607

Written by - Marcin Sławicz, This email address is being protected from spambots. You need JavaScript enabled to view it., internet site: ms audio diy

The beginnings of the project

The idea of designing of my own tube amplifier gave me no peace for the last two years. I'm not an audiophile and using of typical fully transistorized equipment was enough for me (I've always preferred to listen to the music, not to listen to the equipment). Now, however, my worn amplifier causes a lot of problems and it gave me a great opportunity to realize my "tube dream".

Preamplifier A.R. Electronics PL-02

Details: Category: Gallery; Hits: 607

Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

Under the name of A. R. Electronics hides Audio Electronics Company - a small workshop producing tube amplifiers in Gdańsk. For the first time I saw a product of this company at the end of the 90-ies of the last century, when I became the happy owner of the amplifier with the symbol SE-41. Unfortunately, I do not know if the company still exists, because for some time I have no information about new A.R. Electronics amplifiers. Anyway, in the secondary market one can meet the A.R. Electronics amplifiers characterized by good sonic parameters and interesting design line. Despite the lack of information in the official offer, A.R. Electronics produce or produced not only amplifiers but also other audio equipment such as tube preamplifiers. They were made to individual order or in a small number of units. To this type of products belongs a tube preamplifier with the symbol PL-02.

XINDAK MT-3

Details: Category: Gallery; Hits: 608

Grzegorz 'gsmok' Makarewicz

The mid-range tube amplifier. The traditional solution arrangement with nonconventional possibility to switch between triode and pentode mode. The information appearing in many places that it is an amplifier with autobias that doesn't require adjusting the quiescent current of output tubes encouraged me to publish a short description and not as a short set of photographs of this device. This is not true that amplifier has autobiasing. I warn users of the amplifier before carefree approach to this important issue.

The QUAD 22 Control Unit

Details: Category: Gallery; Hits: 608

Grzegorz "gsmok" Makarewicz, This email address is being protected from spambots. You need JavaScript enabled to view it.

QUAD 22 preamp was designed to work with one (mono system) or two (stereo system) QUAD II amps. Its features, in particular, interchangeable external modules predestined it to act as an audio system control device. This has been reflected in the name of the device, which identifies them not as a typical preamp but the control unit (full, original name is "The Quad 22 Control Unit." Due to the fact that even the manual is common for QUAD 22 Control Unit and QUAD II amplifier, photographic presentation begins with a few shots of full audio system designed for stereo reproduction.

Trioda/Triode

Nav view search

Navigation

Search