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DIY DIY amp club V2, Post your DIY amp here

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jazzy939
post Jul 5 2009, 01:16 PM

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Some people swear by 'caps', some don't.
If you can't 'detect/feel' any differences these caps make, then I'd say count your blessings! biggrin.gif
I use the JP variety all the time.. may be a few ELNA here and there and that's about it..
I wouldn't lose any sleep and feel 'inferior' using Rudoycon wink.gif



QUOTE(Enferno @ Jul 5 2009, 04:15 AM)
I've been testing different capacitor brand these few days.. but somehow, i dun feel there is different between this caps..

So i'm wondering whether it is necessary to buy more expensive cap?

cap tested : Ruby ZL, ELNA RE3, PANA FM, cheapo Rudoycon . All in 470uF

wish to have a some discussion with you guys..thanks
*
Enferno
post Jul 5 2009, 09:26 PM

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jazzy your are right.. the so called el-cheapo Rudoycon cap work marvelously without any flaw. So i just couldn't understand, why people in head-fi or other site saying "yeahhh.. ELNA is inferior compared to Blackgate NX......" .

I've read article the important of low-esr cap for power rail and film cap for input cap. have tried it all, result is the same.

what other audiophiler thinks??
kp93300
post Jul 8 2009, 11:40 AM

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QUOTE(ccschua @ May 31 2009, 03:43 PM)
did you match the MOSFET pair on both channel? I have heard people commenting on good sound just off the shelf.
*
Hi Chua,
I have measured the VGs for the IRFP 240 and 9240.
DO I match the Vgs reading between the 240 themselves or is it matching between the 240 and 9240 for each channel ?
Thanks

kp93300

ccschua
post Jul 8 2009, 10:42 PM

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U need to match the 240 and 9240 until the current reading is zero. However I dont think most will match them as right out of the pop, it sounds ok. Can refer the test circuit by Ben Duncan.

Have you got the casing.
kp93300
post Jul 9 2009, 11:50 AM

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QUOTE(ccschua @ Jul 8 2009, 10:42 PM)
U need to match the 240 and 9240 until the current reading is zero. However I dont think most will match them as right out of the pop, it sounds ok. Can refer the test circuit by Ben Duncan.

Have you got the casing.
*
Hi Chua,
I have not got the casing. I intend to build it in an old pioneer amp casing and to buy the casing only if I like the sound and manage to get it to work !
Casing will be the most expensive item for the job !
Have you buld F5 yet ?

Cheers
kp93300


ccschua
post Jul 9 2009, 05:03 PM

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waiting for casing
general_odin
post Sep 5 2009, 10:54 PM

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i'm looking for a good cap to upgrade my X-Fi XtremeGamer sound card

most mods i saw online are using blackgate 2200uf 16v audio caps and i've saw some use 470uf 16v too
(ori is 220uf dunno how many voltage... havent look into the details yet)

i recently found 1500uF 16V Rubycon MBZ caps... wonder is it a good replacement for the stock caps or should i stick to the expensive audio caps?

the website is here biggrin.gif
http://cgi.ebay.com.my/14PCS-1500uF-16V-Ru...id=p3911.c0.m14

do comment
Najmods
post Sep 13 2009, 12:42 PM

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QUOTE(general_odin @ Sep 5 2009, 10:54 PM)
i'm looking for a good cap to upgrade my X-Fi XtremeGamer sound card

most mods i saw online are using blackgate 2200uf 16v audio caps and i've saw some use 470uf 16v too
(ori is 220uf dunno how many voltage... havent look into the details yet)

i recently found 1500uF 16V Rubycon MBZ caps... wonder is it a good replacement for the stock caps or should i stick to the expensive audio caps?

the website is here biggrin.gif
http://cgi.ebay.com.my/14PCS-1500uF-16V-Ru...id=p3911.c0.m14

do comment
*
I bet you want to change DSP supply caps. The Rubycon MBZ is low ESR caps, its not really suitable at that position because of the regulator used, but I use MBZ in that position without any problem (I use 1000uF 6.3V MBZ). The voltage for DSP supply is a mere 1.2V so virtually any caps will fit there.

It won't change the sound quality much, anything will be an upgrade from the stock caps, even a general purpose Rubycon 220uF works well there. Don't spend too much on digital stage, is the analog that brings the most sound improvement
general_odin
post Sep 13 2009, 07:34 PM

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actually i want to change the power filter caps... like most X-Fi mod guide, from the guide they say giving it more power means better bass...

i have no idea, so i just follow XD
Najmods
post Sep 13 2009, 09:47 PM

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QUOTE(general_odin @ Sep 13 2009, 07:34 PM)
actually i want to change the power filter caps... like most X-Fi mod guide, from the guide they say giving it more power means better bass...

i have no idea, so i just follow XD
*
I don't believe changing the caps in this position will do anything to sound. Something like 400uF is good enough. If you want better sound its better to change the 4 decoupling caps near the DAC, something like Rubycon Blackgate NX HiQ will give an audible difference
88sales88
post Sep 24 2009, 11:28 PM

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Hi,

Can someone tell me where to buy aluminium cases for DIY amplifiers ?

Cheers

fy
jazzy939
post Oct 3 2009, 09:20 AM

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A 'small' selection is available at NIXIE.

QUOTE(88sales88 @ Sep 24 2009, 11:28 PM)
Hi,

Can someone tell me where to buy aluminium cases for DIY amplifiers ?

Cheers

fy
*
ccschua
post Oct 7 2009, 11:38 PM

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try this one for your casing, steel or aluminium.

http://www.hifi4sale.net/audio-video-equip...g-new-t3441.htm
LittleGhost
post Oct 14 2009, 10:34 AM

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user posted image

user posted image

user posted image

something i whipped for a forumer.
CV6149
post Oct 14 2009, 12:56 PM

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Nice..!

as usual from LG..........biggrin.gif
nanhifi
post Oct 20 2009, 09:52 PM

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Hi hello for all malaysia DIy FOR AUDIO, I am nanhifi malaysia. I also love to make audio by myself since age 15. I have a great and wide project mostly in amplifier. Hope we can change each other knowladge.
jazzy939
post Oct 22 2009, 04:27 PM

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Great! thumbup.gif
Any webpage/homepage that you have for sharing?

QUOTE(nanhifi @ Oct 20 2009, 09:52 PM)
Hi hello for all malaysia DIy FOR AUDIO, I am nanhifi malaysia. I also love to make audio by myself since age 15. I have a great and wide project mostly in amplifier. Hope we can change each other knowladge.
*
nanhifi
post Oct 23 2009, 12:29 PM

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well this is my website since 2002 but still lot to be update and the circuit there are now been replaced by a new one. Yet still not to be updated.

http://nanhifi.tripod.com with new blogs, www.electronicdiy.blogspot.com

Well I will put a new contents as soon I get a new pc.
wui223
post Oct 24 2009, 02:25 PM

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My latest build: Diamante ~ class A full discrete headamp

user posted image

Check out diyAudio forum for more info.

This post has been edited by wui223: Oct 24 2009, 02:26 PM
LittleGhost
post Oct 24 2009, 04:48 PM

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ITT, wui achieves first person to build a fully discrete high end folded cascode amplifier on LYN.

Discrete GET.

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