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Author Topic: Vacuum tube amplifiers  (Read 56554 times)

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Re: Vacuum tube amplifiers
« Reply #1440 on: May 23, 2012, 01:23:55 PM »
here it is w/ final casing :D

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Re: Vacuum tube amplifiers
« Reply #1440 on: May 23, 2012, 01:23:55 PM »

Offline Engr. Dacuycoy

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Re: Vacuum tube amplifiers
« Reply #1441 on: May 23, 2012, 02:29:41 PM »
joining tube craze courtesy of sir tony  ;D



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I'm a Mechanically trained, electronic to me is just an hobby and if I can do it, so can you!
Don't get discouraged by those so called "EXPERT"! I can tell you most of the time they "TALK" only but with no practical results.
Seldom people succeed the first time, just keep on trying!

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Re: Vacuum tube amplifiers
« Reply #1441 on: May 23, 2012, 02:29:41 PM »

Offline Engr. Dacuycoy

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Re: Vacuum tube amplifiers
« Reply #1442 on: May 23, 2012, 02:34:05 PM »
sir efren got the parts tnx +1  :-* ;D

@Ryu
sis magkapatid ata avatar natin  ;D ;D ;D
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I'm a Mechanically trained, electronic to me is just an hobby and if I can do it, so can you!
Don't get discouraged by those so called "EXPERT"! I can tell you most of the time they "TALK" only but with no practical results.
Seldom people succeed the first time, just keep on trying!

Philippine Electronics Forum

Re: Vacuum tube amplifiers
« Reply #1442 on: May 23, 2012, 02:34:05 PM »

Online Johannah Aleksandria

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Re: Vacuum tube amplifiers
« Reply #1443 on: May 23, 2012, 02:42:21 PM »
Quote from: Engr. Dacuycoy on May 23, 2012, 02:34:05 PM

sis magkapatid ata avatar natin  ;D ;D ;D

Nakita ko rin motorcyclephilippines yan ah.
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Generations come and generations go, but the world stays just the same. What has happened before will happen again.

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Re: Vacuum tube amplifiers
« Reply #1443 on: May 23, 2012, 02:42:21 PM »

Offline gorex

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Re: Vacuum tube amplifiers
« Reply #1444 on: May 23, 2012, 03:03:25 PM »
Mga masters. I wanna try tube preamps since tapos na p3a ko. puwede ba yan  sa p3a?

http://diyaudioprojects.com/Tubes/ECC802S-ECC82-12AU7-Tube-SRPP-Preamp/

ito mga master tony jojo efren tukkar johannah at ryu puwede ba ito sa p3a?
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We use negative feedback in audio amplifiers to stabilize the gain, increase the bandwidth,lower the output impedance and lower the non-linear distortion.

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Re: Vacuum tube amplifiers
« Reply #1444 on: May 23, 2012, 03:03:25 PM »

Offline JojoD818

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Re: Vacuum tube amplifiers
« Reply #1445 on: May 23, 2012, 03:58:06 PM »
It will work, but unfortunately, I have my (read personal) reservations with SRPP topologies. First is the gain, sure it has lot's of current drive, but who needs that? The gain for me is just too much for modern sources and power amps (including the P3A). It may have better PSRR and signal to noise ratio but still. Second, is the output impedance, usual Zout of SRPP drives are much much higher as compared to their other siblings.

But that doesn't mean you shouldn't try it, this is just my opinion. I'm sure the others will have more ideas stored for you. ;)
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Re: Vacuum tube amplifiers
« Reply #1446 on: May 23, 2012, 03:58:34 PM »
Quote from: Engr. Dacuycoy on May 23, 2012, 02:34:05 PM
@Ryu
sis magkapatid ata avatar natin  ;D ;D ;D
ahahaha ;D ;D

Quote from: gorex69ers on May 23, 2012, 03:03:25 PM
Mga masters. I wanna try tube preamps since tapos na p3a ko. puwede ba yan  sa p3a?

http://diyaudioprojects.com/Tubes/ECC802S-ECC82-12AU7-Tube-SRPP-Preamp/

ito mga master tony jojo efren tukkar johannah at ryu puwede ba ito sa p3a?

ayaw ni sir tony at sir efren sa SRPP (natatanggal daw ung 2nd harmonics)
http://www.electronicslab.ph/forum/index.php?topic=25478.msg636150#msg636150
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Offline gorex

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Re: Vacuum tube amplifiers
« Reply #1447 on: May 23, 2012, 04:36:17 PM »
thanks Sir Jojo sa info plus +1 for you. basa mode muna ako sa vc tubes theory. (triode) para mas maintidihan ko bago ako mag assemble ng tube preamp. ;)
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We use negative feedback in audio amplifiers to stabilize the gain, increase the bandwidth,lower the output impedance and lower the non-linear distortion.

Offline JojoD818

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Re: Vacuum tube amplifiers
« Reply #1448 on: May 23, 2012, 04:48:44 PM »
Quote from: gorex69ers on May 23, 2012, 04:36:17 PM
thanks Sir Jojo sa info plus +1 for you. basa mode muna ako sa vc tubes theory. (triode) para mas maintidihan ko bago ako mag assemble ng tube preamp. ;)


welcome sir, the simplest, all rounder is still is an anode follower + cathode follower topo. download the RCA tube manual, lot's of info there, pwede pa load sa ipad kasi pdf. ;)

Godspeed!
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Offline Tukkar

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Re: Vacuum tube amplifiers
« Reply #1449 on: May 23, 2012, 05:08:04 PM »
yung 6H32 na preamp schema ni sir tony pwede yun....or if you want hanap kasa internet ng mga Tube linestage schematics,,,
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Re: Vacuum tube amplifiers
« Reply #1450 on: May 23, 2012, 05:25:18 PM »
ung mosfet follies nlang pde din :D
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Offline efren

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Re: Vacuum tube amplifiers
« Reply #1451 on: May 23, 2012, 05:30:35 PM »
Quote from: Engr. Dacuycoy on May 23, 2012, 02:29:41 PM
joining tube craze courtesy of sir tony  ;D




welkam to da klab ;D ;D
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Offline efren

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Re: Vacuum tube amplifiers
« Reply #1452 on: May 23, 2012, 05:34:05 PM »
Quote from: Engr. Dacuycoy on May 23, 2012, 02:34:05 PM
sir efren got the parts tnx +1  :-* ;D
you're welcome ;)
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"just keep 'em glowing"

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Re: Vacuum tube amplifiers
« Reply #1453 on: May 23, 2012, 05:49:44 PM »
Quote from: Engr. Dacuycoy on May 23, 2012, 02:29:41 PM
joining tube craze courtesy of sir tony  ;D




uy may kokey pa ;D
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Offline Engr. Dacuycoy

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Re: Vacuum tube amplifiers
« Reply #1454 on: May 23, 2012, 09:00:21 PM »
Quote from: Ryu on May 23, 2012, 05:49:44 PM
uy may kokey pa ;D

dyan nilagay spareparts ni sir tony  ;D ;D ;D
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I'm a Mechanically trained, electronic to me is just an hobby and if I can do it, so can you!
Don't get discouraged by those so called "EXPERT"! I can tell you most of the time they "TALK" only but with no practical results.
Seldom people succeed the first time, just keep on trying!

Offline JojoD818

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Re: Vacuum tube amplifiers
« Reply #1455 on: May 23, 2012, 11:05:32 PM »
so fan ni kokey si tony!  ;D 8)
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Online tony

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Re: Vacuum tube amplifiers
« Reply #1456 on: May 24, 2012, 06:58:42 AM »
Quote from: JojoD818 on May 23, 2012, 11:05:32 PM
so fan ni kokey si tony!  ;D 8)


wako-wako na ngayon... :D :D :D
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Online tony

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Re: Vacuum tube amplifiers
« Reply #1457 on: May 24, 2012, 07:00:00 AM »
Quote from: Engr. Dacuycoy on May 23, 2012, 09:00:21 PM
dyan nilagay spareparts ni sir tony  ;D ;D ;D

sa mga bumibile ng screws sa Tu-soy makikilala yang lalagyan....yung mga screws sa Deeco, poor quality, hindi ako bumibile ng screws sa deeco eversince.....
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Online tony

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Re: Vacuum tube amplifiers
« Reply #1458 on: May 24, 2012, 07:01:56 AM »
dung sa mga nagangailangan ng tubes, please contact Gery Sta Maria, +639217430558 he sells tubes for a living......price is reasonable.......as a rule, i do not sell tubes alone, Gery is realiable, i have ordered more than 100K worth of tubes from him....
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Offline AT ALPHA

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Re: Vacuum tube amplifiers
« Reply #1459 on: May 24, 2012, 09:57:24 AM »
tomas mapua in binondo is what i call "Screw Street"!
one particular store i can recommend is SCREW CITY, they have cheaper prices and nice staff, the owners included.
its just along tomas mapua near soler intersection.

this is not OT isn't it? you need screws to make a nice tube amplifier... ;D

just don't let yourself be screwed! ;D ;D
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Re: Vacuum tube amplifiers
« Reply #1459 on: May 24, 2012, 09:57:24 AM »
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