Just a few tweaks and it's a grand slam. My goal was to make a speaker with clear, natural midrange and I succeeded. As usual, minor adjustments brought the crossover region (2500 Hz) into focus.
They're so clear and so loud. Bass is warm with great kick drums. Acoustic jazz sounds so fine on these speakers.
When the weather warms up I will disassemble, sand, stain, varnish. Will keep them light colored. Everybody says the wood is beautiful.
They're so clear and so loud. Bass is warm with great kick drums. Acoustic jazz sounds so fine on these speakers.
When the weather warms up I will disassemble, sand, stain, varnish. Will keep them light colored. Everybody says the wood is beautiful.
Attachments
This one...
Its part of akai mini system i once had complete. Included nice fm tuner, preamp and cassette deck. Deck was decent. I gave the system to a friend. Only power amp remained because of faulty switching power supply. I gave it massive toroidal trafo plus filtration, as much i could stuff inside. It sounds powerful and clean. It has three chips inside, one stereo chip for voltage swing, and two power packs i believe stk0050ii. I like the fluorescent display reading the power on output. It shows how little power we need. It has 0.1x switch, otherwise no bars would move.
This kitchen system will be fun to swap various amps to.
I tried aca mini, jlh, lineup amp, those two goldmunds so far. Plenty more to try.
Its part of akai mini system i once had complete. Included nice fm tuner, preamp and cassette deck. Deck was decent. I gave the system to a friend. Only power amp remained because of faulty switching power supply. I gave it massive toroidal trafo plus filtration, as much i could stuff inside. It sounds powerful and clean. It has three chips inside, one stereo chip for voltage swing, and two power packs i believe stk0050ii. I like the fluorescent display reading the power on output. It shows how little power we need. It has 0.1x switch, otherwise no bars would move.
This kitchen system will be fun to swap various amps to.
I tried aca mini, jlh, lineup amp, those two goldmunds so far. Plenty more to try.
Attachments
Hi adason
Where can i find that fine Buffer pcb?
in this thread i found nothing:
BJT buffer amp
thx
chris
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I do not have buffer pcb. Please contact Vunce, he was kind enough the design, make and send one pcb to me.
To whom it may concern.
There is never enough multimeters around when you fiddle with classA amps and bias changes dc offset and two halfs need adjustment at the same time.
After the move i was low on multimeters, as few developped some issues.
Sometimes simple solution is best. Parts express has some inexpensive dmm which worked just fine for me, less that ten bucks.
https://www.parts-express.com/DT-83...gital-Multimeter-with-Transistor-Test-390-500
There is never enough multimeters around when you fiddle with classA amps and bias changes dc offset and two halfs need adjustment at the same time.
After the move i was low on multimeters, as few developped some issues.
Sometimes simple solution is best. Parts express has some inexpensive dmm which worked just fine for me, less that ten bucks.
https://www.parts-express.com/DT-83...gital-Multimeter-with-Transistor-Test-390-500
Attachments
Finally organized my headphones rack. Source is cambridge audio azur. It has rather good output, dual wolfson. Plus it has optical and coax outputs. Those feed cirus logic dac and breeze audio dac1. Both excellent. Headphone amps include ACP+, Whammy, Lehmann, various versions of Musical Fidelity tube headphone amps, Schiit, plus many other diy stuff. Bunch of Sennheiser and HiFiMan, just those on the rack. Plus many others, grado, ess, koss...
