Author Topic: My Tube Journey (Read 210321 times)

tony · « **Reply #540 on:** Sep 14, 2015 at 04:45 PM »

very low current yung unit, a few watts of power so i do not expect failure,....
wala akong stock ng regulators, bibile pa lang...

tony · « **Reply #541 on:** Sep 14, 2015 at 06:54 PM »

DNY40W SS amp paired with a tube preamp...

rochie · « **Reply #542 on:** Sep 14, 2015 at 06:56 PM »

Quote from: tony on Sep 14, 2015 at 06:54 PM

DNY40W SS amp paired with a tube preamp...

nakakaintriga yung mga naka plastic sa likod

.

tony · « **Reply #543 on:** Sep 14, 2015 at 06:59 PM »

my toys for next year's journey.....

remington · « **Reply #544 on:** Sep 14, 2015 at 07:50 PM »

WOW daming parating!!!

CoolTOYZPH · « **Reply #545 on:** Sep 14, 2015 at 08:52 PM »

So far Brent Jesse(audiotubes) has been a reliable source of Matches and quiet tubes for audio application.
A bit on the expensive side but if he tells me quiet and matched, they come out exactly as described.

Quote from: tony on Sep 11, 2015 at 06:25 PM

no two tubes are exactly alike in characteristics,
that is why i do not subscribe to the notion of "matched tubes".....
afaik, no such thing with tubes, get 100 samples and you will be lucky to find a pair...
even the two sections of a tube will never match 100% they can come close but never 100%
luckily there are circuit techniques that can mitigate these effects...
so if someone sells me a matched pair, i run away.....

tony · « **Reply #546 on:** Sep 15, 2015 at 06:25 AM »

Jim Mcshane is also a trusted seller at diyaudio......http://www.mcshanedesign.net/

tony · « **Reply #547 on:** Sep 22, 2015 at 04:21 PM »

4KN8 CCDA rev. 02 updated using CCS mosfet active loading......

tony · « **Reply #548 on:** Sep 23, 2015 at 05:20 PM »

discrete transistor phono stage....

camoteque · « **Reply #549 on:** Sep 23, 2015 at 05:49 PM »

Wow. Ayos yan ha. Takip na lang kulang

rochie · « **Reply #550 on:** Sep 23, 2015 at 06:32 PM »

sir Tony,
na compare nyo na yung VSPS tsaka yang transistor phono stage?

tony · « **Reply #551 on:** Sep 23, 2015 at 06:53 PM »

Quote from: rochie on Sep 23, 2015 at 06:32 PM

sir Tony,
na compare nyo na yung VSPS tsaka yang transistor phono stage?

hindi kasi ako golden eared kaya tingin ko same din lang...

tony · « **Reply #552 on:** Sep 23, 2015 at 06:54 PM »

Quote from: camoteque on Sep 23, 2015 at 05:49 PM

Wow. Ayos yan ha. Takip na lang kulang

tony · « **Reply #553 on:** Oct 05, 2015 at 05:34 PM »

Henry Chua, of E-Gizmo, gave me a prototype of his Class D amp a couple of years back...
i added a small heatsink, gave it a split psu of +- 30 volts, at normal listening levels,
the rails are +-28, heat is lesser this way....still good after these years....

tony · « **Reply #554 on:** Oct 09, 2015 at 08:07 PM »

DNY40W power amp build no.2, this time with rails of +-50 volts....
as you can see, caps upsized to 63 volts from 50 volts...

progress updates...

collection of parts, final....the speaker protection board sits atop the psu board...

tony · « **Reply #555 on:** Oct 13, 2015 at 03:13 PM »

speaker delay and dc protection board for the dny40w amp done...

remington · « **Reply #556 on:** Oct 13, 2015 at 04:55 PM »

mukhang maganda yang bagong putahe master a!!!

kelan pwede madinig? Para saan yung kingever

tony · « **Reply #557 on:** Oct 13, 2015 at 05:59 PM »

Quote from: remington on Oct 13, 2015 at 04:55 PM

mukhang maganda yang bagong putahe master a!!! kelan pwede madinig? Para saan yung kingever

galing dito si Larry kanina...napakinggan na nya yung unang 40 watter ko...
yung kingever para sa MD player ko...

rochie · « **Reply #558 on:** Oct 13, 2015 at 06:10 PM »

Quote from: remington on Oct 13, 2015 at 04:55 PM

mukhang maganda yang bagong putahe master a!!! kelan pwede madinig? Para saan yung kingever

pagawa ka murang mura lang yan

transformer at casing lang mahal diyan heheheh

tony · « **Reply #559 on:** Oct 13, 2015 at 06:15 PM »

Quote from: rochie on Oct 13, 2015 at 06:10 PM

pagawa ka murang mura lang yan transformer at casing lang mahal diyan heheheh

ilan pa nga pala ang kits mo?

rochie · « **Reply #560 on:** Oct 13, 2015 at 06:16 PM »

Quote from: tony on Oct 13, 2015 at 06:15 PM

ilan pa nga pala ang kits mo?

madami pa sir tony,meron bagong dating na mga components para sa bare pcb pero standard build na lang wala na yung mga parts para sa current mirror at mga jumpers.

remington · « **Reply #561 on:** Oct 13, 2015 at 06:35 PM »

Quote from: tony on Oct 13, 2015 at 05:59 PM

galing dito si Larry kanina...napakinggan na nya yung unang 40 watter ko...
yung kingever para sa MD player ko...

a ok para sa MD player pala hehehe! master pwede ba ma home audi yang 40 watter na yan?

tony · « **Reply #562 on:** Oct 15, 2015 at 10:54 AM »

Quote from: remington on Oct 13, 2015 at 06:35 PM

a ok para sa MD player pala hehehe! master pwede ba ma home audi yang 40 watter na yan?

later perhaps i am still enjoying it......
saka me parating na mga gustong marinig....
will advise later....

camoteque · « **Reply #563 on:** Oct 15, 2015 at 11:16 AM »

Quote from: rochie on Sep 23, 2015 at 06:32 PM

sir Tony,
na compare nyo na yung VSPS tsaka yang transistor phono stage?

I was able to compare the two SS phonostages "in my system" and I prefer the transistor phono with lower gain. In Tony's system, I preferred the VSPS because of the higher gain. In my system, the VSPS to my ears is analytical while the other one is musical. Bagay siguro sa may speakers na mataba tumunog ang VSPS. Best to audition both phonostages in your system. Bang for the buck phonostages especially sa mga nag-i-start pa lang sa vinyl.

remington · « **Reply #564 on:** Oct 15, 2015 at 12:08 PM »

Quote from: tony on Oct 15, 2015 at 10:54 AM

later perhaps i am still enjoying it......
saka me parating na mga gustong marinig....
will advise later....

copy master

TIA

tony · « **Reply #565 on:** Oct 29, 2015 at 07:34 AM »

how's this for an amplifier casing?
sent to Bell Metals for electroplating brght zinc.
then to Uni-Pacific powder coating shop for painting...
a 2.5mm aluminum L-type sub-chassis will hold all the heavy components...
so this casing will form an outer shell....

tops and sidings will be colored matte black(?)....powder coated of course...

with lfting handles to be installed....

rochie · « **Reply #566 on:** Oct 30, 2015 at 10:33 AM »

^^
nabigyan mo ako sir tony ng idea diyan. I still have a lian li and micro ATX casing all aluminum lying around in the attic. might as well use them for my diy amp projects, I don't have any plans for now to assemble new desktop pc as I already have a laptop provided by the company.

Ilang watts pala balak nyong gawin doon sa last dny40w kit na kinuha nyo? 100watts ba?

tony · « **Reply #567 on:** Oct 30, 2015 at 11:21 AM »

one of the higher wattage types, at least 250watts per channel....

tony · « **Reply #568 on:** Oct 30, 2015 at 12:20 PM »

got some 1 3/4 x 4 inches bobbins fron Edrel....
computation sheet:

winding primary:

the primary coil had some space left over, so i decided to make use of the space
for an electrostatic shield, pigtails connect to one end of the #32 wire,
one of the pigtails will be in touch with the cores at build up and another to chassis ground...
do not ask me how many turns, i did not even bother to count, just filled up space as far
as we can go....

finished and taped up.....filamentary tapes are available at national bookstore...

rochie · « **Reply #569 on:** Oct 30, 2015 at 12:34 PM »

Quote from: tony on Oct 30, 2015 at 11:21 AM

one of the higher wattage types, at least 250watts per channel....

cool, separate output board?