Some of my projects during

2019-2023

Updated 2023-03-14

Riaa amplifier + 3band tonecontrol to JBL PL-100 amplifier system and a Riaa to the Philips AG 9016

Riaa for 3 Ecc83/12ax7

and

3 band tonecontrol for 2 12ax7 +1 12 au7

Powersupply (General Radio 1964)

6AV5 +12ax7

All The tubes tested with BK747B tester before test in the preamps.

I'm using a old Power supply 300volt from General Radio 1964 with 6AV5 +12ax7

Power supply tubes are from1961and the rest saw the dayligth last time 1984 from mil test vacuum tube teststation.

The sides made from cutting boards

stained ashwood and front stained bamboo

Bottom cover masonite + 0,2-0,3mm alu

Tests with differnt shields

My Tubeshields kit " making heat transfer liner"8 alu 0,2-0,3mm) should be anodized i black for best result

Thermo pictures without and with tubeshield

This is my first protype made only for test ,

But this method was used in the 90:s for the pro market amplifier system, but it was a expensive method to make them.

Modifying the JBL-PL100 system ca 2*60w (1959-60) made by H.wolcott

+ 220watts monoblock made by H. Wolcott 1967

Philips AG 9016 amplifier mod

Input phono jack replaced with Rca phono contacts

Vinyl Records storing: Build on a old TV table from 1958-59(teak) "Now Playing" is engraved with my homemade pantography unit

Making Pyrography boards , only for therapy and training of my motor skills and consentration after corona

Pyrography tools

Pyrography board to my old "Fram" Racerbike model 23 from 1927(under restoring)

Model of Malmsjö/ Svenska Pianofabrikens Thale'ns ABBA piano (used in Mello Stockholm 1974)

2022-08-05 Wall hinge for the bike "Fram"

Project with a "Steambox" bending wood , (in swedish "Basning") JBL Metregon copy not finished, now used only as a stereo/tv bench

2021-12-27

JBL Hartsfield toploaded mini model in plywood. There are no official original drawings so I will try to do this after the patents drawings .This is a small scale test

This type of "Sound Reflector" gives Stereo sound in any position in front of the speaker from left to right side in the room.

Test unit: mini version for use in a small room for use with computer speakers

2021-12-19 lathe jig for my drill maschine (this is the making of the speaker for JBl Hartsfield mini model)

20220-03-20 Parts for my project Hartsfield model

Angle meter for all special angles in the cabinette

Jig for speakers 15 inch (mounting front or rear )

JBL Toploaded scale 1:1 model in frigolit

2022-03-28

Now it takes the form and size "huge"

this is still only a model" no solid wood work"

Projektmodellen färdigbyggt men Ej avslutat pga fördyrade kostnader av trämaterial samt blev lite för tung i vikt och storlek. om den skulle bli i original storlek. 2022-12-21

2022-08-06

Silly project?

Testing will start for for laminar air flowing in my project of a speaker cabinette!

+ a special airfilter

Because of the vacuumtube situation?.

Modifying my old equipment

This is for Revitialize and rejunevation of vacuum tubes.This is equipment from 80-90s I used for Testing and removing short circuits etc. of my imported tubes.

For info: Bassamps at gmail.com