L.E. Amplifiers

17 June 2021

Link for the Series 2 and Landmark audio amplifier designs

Hello everyone,

Its been so looooooong that i have not updated this site since the passing of the late Engr Benny Laguisma. When it comes to audio amplifier designs as far as vacuum tubes or valves, BJTs and the use of MOSFETS as well as IGBTs in his designs, he is the right person to go to, bar none.

As an audio hobbyist myself, i am providing here the link to his two designs. One using BJT which is the Series 2 and the other using MOSFETS or IGBT devices which is the Landmark.

This is in homage to a great mentor, teacher, designer, and good chap to have a chat when he was always around. Sir Benny, this is for you.

Click the link below:

Series 2 and Landmark plans

Deni

01 January 2016

Roland JC60 with LE Series 2 BJT

Finally it is done! Had to put a new amp module because i cannot restore fully the original one (no parts available). Module is a Laguisma Series 2 BJT using power transistors with Motorola part numbers 70484140 and 70474140; transistors that are tailored for Peavey equipment.

A clean sounding guitar amp with a light overdrive when engage and great sounding spring reverb.

10 August 2015

Engr. Benedicto S. Laguisma

23 April 2015

Series 2 Quasi Version (2N3055) with USB/SD MP3/WMA/FM/Line In Module and IR Remote Capability

An old high school amplifier project resurrected with a Series 2 Quasi amp module utilizing the same enclosure, power transistors, and power transformer. 30 watts of average RMS power output. :)