Author Topic: My DIY Tube Project (Read 69547 times)

redmagic · « **Reply #120 on:** Oct 14, 2004 at 03:16 PM »

Quote from: arnoldc on Oct 14, 2004 at 03:13 PM

uy magic, kelan ba namin mababalitaan na tapos na yung amp mo?

hehehe! panis na nga sa bahay di pa rin nagagawa

tinatamad maghinang. tsaka wala sa bahay mga tubes.
nasa ibang bahay. pinapabreak-in ko

ang dami kong dahilan ano?

JojoD818 · « **Reply #121 on:** Oct 14, 2004 at 10:33 PM »

Quote from: redmagic on Oct 14, 2004 at 03:10 PM

sir jojoD,

musta na phonostage mo? were you able to implement the 4th constant? how was it?

sir,

tagal na tapos yun, nasa ibang bahay na din.

ayus yun cct na yun, lalu na pag may 4th constant, parang anti-sibilance ang effect.

kaso pag pangit plaka, pangit din tunog, pag maganda plaka, ganda din tunog. hehehe, di marunong magsinungaling.

j_albert22 · « **Reply #122 on:** Oct 15, 2004 at 02:43 PM »

meron akong alam yong cnungalin

redmagic · « **Reply #123 on:** Oct 15, 2004 at 03:05 PM »

Quote from: JojoD818 on Oct 14, 2004 at 10:33 PM

sir,

tagal na tapos yun, nasa ibang bahay na din. ayus yun cct na yun, lalu na pag may 4th constant, parang anti-sibilance ang effect.

kaso pag pangit plaka, pangit din tunog, pag maganda plaka, ganda din tunog. hehehe, di marunong magsinungaling.

Sir, gusto ko sana malaman difference with or without 4th constant. malaki ba audible difference?
ano power supply ginamit mo, ss o tube rectified?

maraming salamat po!

JojoD818 · « **Reply #124 on:** Oct 16, 2004 at 01:47 AM »

Quote from: j_albert22 on Oct 15, 2004 at 02:43 PM

meron akong alam yong cnungalin

manong,

di ayos yan cinungaling na phono stage, manloloko lang yan.

JojoD818 · « **Reply #125 on:** Oct 16, 2004 at 01:54 AM »

Quote from: redmagic on Oct 15, 2004 at 03:05 PM

Sir, gusto ko sana malaman difference with or without 4th constant. malaki ba audible difference?
ano power supply ginamit mo, ss o tube rectified?

maraming salamat po!

In my simple words, yun walang 4th constant medyo matalas, and to some materials, sibilant din. Yun meron naman sir, mas controlled yun highs, parang mas clearer sya at may definition. Di marunong magsinungaling, pag panigt plaka pangit din tunog.

I used ss rectifiers (UF4007) only with a B+ = 385VDC, as always, paramount filtering is a must. Duncan's PSU designer helped a lot in this department. I was supposed to have regulated the phono psu with a Mosfet pero di na push thru sir.

Sana tube rectifier naman pag ikaw na nag try.

JojoD818 · « **Reply #126 on:** Oct 16, 2004 at 01:58 AM »

redmagic,

I forgot to add, this is my 1st tube phono stage with a "passive" RIAA, yun mga nauna ko na tube phono stage puro "active" RIAA, yun bang nasa feedback yun RIAA network. Kaya medyo iba sya sa ears ko.

cheers!

redmagic · « **Reply #127 on:** Oct 16, 2004 at 10:45 AM »

Quote from: JojoD818 on Oct 16, 2004 at 01:54 AM

In my simple words, yun walang 4th constant medyo matalas, and to some materials, sibilant din. Yun meron naman sir, mas controlled yun highs, parang mas clearer sya at may definition. Di marunong magsinungaling, pag panigt plaka pangit din tunog.

I used ss rectifiers (UF4007) only with a B+ = 385VDC, as always, paramount filtering is a must. Duncan's PSU designer helped a lot in this department. I was supposed to have regulated the phono psu with a Mosfet pero di na push thru sir.

Sana tube rectifier naman pag ikaw na nag try.

jojo,

atin atin lang to ha. wag ka maingay. may gagawa ng ganyang phono na tube rectified. sisimulan pa lang. antayin natin. kilala mo rin kung sino sya

pag may magreact, malamang sya yun hehehe!

redmagic · « **Reply #128 on:** Oct 16, 2004 at 10:57 AM »

Quote from: JojoD818 on Oct 16, 2004 at 01:58 AM

redmagic,

I forgot to add, this is my 1st tube phono stage with a "passive" RIAA, yun mga nauna ko na tube phono stage puro "active" RIAA, yun bang nasa feedback yun RIAA network. Kaya medyo iba sya sa ears ko.

cheers!

jojo,

o nga pala. the 4th constant you implemented is 965R? not 1 k? have you tried both? if yes, how would they differ in sound? mahirap ata hanapin value kasi nun dito eh.

manythanks!

JojoD818 · « **Reply #129 on:** Oct 16, 2004 at 03:37 PM »

Quote from: redmagic on Oct 16, 2004 at 10:45 AM

jojo,

atin atin lang to ha. wag ka maingay. may gagawa ng ganyang phono na tube rectified. sisimulan pa lang. antayin natin. kilala mo rin kung sino sya pag may magreact, malamang sya yun hehehe!

Hahaha! Can't wait to hear comments ng tube rectified version nito.

Ang tagal naman magreact!

JojoD818 · « **Reply #130 on:** Oct 16, 2004 at 03:40 PM »

Quote from: redmagic on Oct 16, 2004 at 10:57 AM

jojo,

o nga pala. the 4th constant you implemented is 965R? not 1 k? have you tried both? if yes, how would they differ in sound? mahirap ata hanapin value kasi nun dito eh.

manythanks!

Yup, 965R yun composed of 56R + 909R resistors. Sabi ni Frank ok naman daw kung 1K gamitin pero minabuti ko na yun sumunod sa computed value.

Di ko pa nasubukan 1K, pag na try nyo review ha.

shuttertrigger · « **Reply #131 on:** Oct 26, 2004 at 08:41 AM »

sir s2kov nice project! hope to hear it too!

s2kov · « **Reply #132 on:** Oct 03, 2005 at 12:10 PM »

Circuit of my on-going project:

Some says 12BH7 is a much livelier tube. Does anyone have tried using this tube?

s2kov · « **Reply #133 on:** Oct 03, 2005 at 02:42 PM »

completed mounting the sockets!

s2kov · « **Reply #134 on:** Oct 03, 2005 at 02:44 PM »

s2kov · « **Reply #135 on:** Oct 03, 2005 at 02:49 PM »

Superman · « **Reply #136 on:** Oct 03, 2005 at 02:52 PM »

ganda pare!

ATJr. · « **Reply #137 on:** Oct 03, 2005 at 03:05 PM »

your attention to details is worth emulating by other diy'ers!
for starters, those stainless steel screws gives your creations a look of elegance, myself stopped using those g.i. 5-40's with square nuts from DEECO a long, long time ago, eversince i discovered tusoy circa 1980's.
certeinly it is well worth the trip to aranque!

s2kov · « **Reply #138 on:** Oct 03, 2005 at 03:58 PM »

master tony,

kinakalawang kasi yun eh!

Quote from: 2ny on Oct 03, 2005 at 03:05 PM

your attention to details is worth emulating by other diy'ers!
for starters, those stainless steel screws gives your creations a look of elegance, myself stopped using those g.i. 5-40's with square nuts from DEECO a long, long time ago, eversince i discovered tusoy circa 1980's.
certeinly it is well worth the trip to aranque!