Some of my projects during
2019-2023
Updated 2023-03-14
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