Thursday 29 January 2015



Bartholomew Nicholas Locanthi II (White Plains, New York, 1919 – Glendale, California, January 9, 1994) was an audio engineer and leading expert in the US pro-audio industry in the 1970s and 1980s.
Bart Locanthi graduated from California Institute of Technology in 1947 with a B.S. degree in physics.
From 1947–1960, he mostly contributed to analog computers.
In the late 1960s, Bart Locanthi developed the "T circuit", an output configuration for solid-state power amplifiers that became a standard in the industry. He received three US patents for his pioneering work on transistor amplifiers.
Bart Locanthi became the Vice President of Engineering at JBL in 1960. It was under his tenure that the JBL L-100 Century, the world’s most popular loudspeaker in its day, was manufactured. In 1975, he was named a Vice President of Pioneer North America Development. While at Pioneer, he and his team of engineers designed the HPM-100 loudspeaker as an "improved" JBL L-100 Century. It was also at Pioneer that he was deeply involved in digital development during the early years of the compact disc
He died on January 9, 1994 in Glendale, California after a long bout with pancreatic cancer.
Bart Locanthi was a Fellow of the Acoustical Society of America and the Audio Engineering Society (AES); he was awarded posthumously the AES Gold Medal in 1996. Locanthi was active in many AES affairs, he served as papers chairman for conventions, member of the Board of Governors, and served as president (1986–1987).

Wednesday 28 January 2015

Pioneer HPM-100 Vintage Speakers

                                       My Pioneer HPM-100 Vintage Speakers 1975

"""The Pioneer HPM-100s were built by former JBL engineers to do one thing, and that was to be a better sounding speaker than the JBL L100. I think they admirably did their job, as the HPM 100s are one of the best sounding speakers ever built. I know this is saying a lot, but this is the general consensus among many people in the Hi-Fi Industry. These speakers have just the right balance and warm tones. These are amazing sounding speakers.
These particular Pioneers work 100% and sound remarkable! The depth of the sound of these speakers is incredible. Breathtaking sounding speakers."""

“Rich Concert Realism from 100-watt 4-way, 4-speaker Bass Reflex System with Carbon Fiber Blended Woofer & High Polymer Supertweeter”


The Pioneer HPM-100 is a 100 watt, 4-way, 4-speaker bass-reflex system with a 300mm carbon fibre blend woofer and high polymer super tweeter.


Type: 4 way, 4 driver loudspeaker system
Frequency Response: 30Hz to 25kHz
Power Handling: 50W
Crossover Frequency: 3000, 4000, 12000Hz
Impedance: 8Ω
Sensitivity: 92.5dB
Bass: 1 x 300mm cone
Midrange: 1 x 100mm cone
Tweeter: 1 x 45mm cone
Super Tweeter: 1 x HPM high polymer
Enclosure: bass reflex
Year: 1976
Dimensions: 390 x 670 x 393mm
Weight: 26.7kg

Wednesday 14 January 2015

Fisher RS 1035 Stereo Receiver

Fisher RS 1035 Stereo Receiver

A midprice receiver Fisher RS-1035 made by Sanyo. The tuning section is quite sensitive with good channel separation. Overall, a compact receiver that already be familiar enough with steam 2x40 watts into 4 ohms speakers. With nice front design of this line was tempted formerly the great name of "The Fisher" (made in USA) to a wider audience by means of hi-moderate cost prices make available - now made in Japan. Under the name "Studio Standard by Fisher" the series reached the hifi friends from the mid-70s.