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DIY DIY amp club V2, Post your DIY amp here

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sonixmedia
post Feb 23 2012, 07:53 AM

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QUOTE(Hakimi90 @ Feb 23 2012, 02:36 AM)
hehehe....  thanks for da info..... thumbup.gif

here is my experience and some little knowledge of jalan pasar pudu, been there once every 1 or 2 weeks

Nixie = Lot of project , cytron, uContoller, components, enclusure, most project part are available and general component quite pricey

Online Components = Interesting project available including non ordinary components = Thermolelectric peltier, solar, gadget Li-ion battery

R.E Spares = Lots of spare part and mostly availble, velleman dealer and dare to quote higher price due to availablity. (my last choice of shop)(STk 4048xi available here)

Maplin = Generally like other component shop but here the heatsink cheaper, hobby kits

Darson = Cheapo china electronics product

Melectron = General electronic shop, spares not as much as R.E. , now having CCTV section in front. CT Brand, Pro's Kit, Hakko distributor

Magnumtronic = General elctronic shop, washing machine PCB spares, component as well

Standwell = General electronic shop, have older spares/ part/ also having torroidal transfomer

Meter Trading = General electronics shop, ics are cheaper. (most of my component i bought here)

K.E Electronics = General electronics shop, component are cheaper if bought in bulk  like RM5 for 100pcs LED

"unknown shop" = in same row of Meter and KE, have higher amperes of regulator ics, LM78xx series 2,3 amp rather than normal 1 amp at other      shop . They also provide repackaging laptop battery or custom battery pack.

and newly found a shop that can repair speaker, changing everything as long as you only have magnet and chassis (paper,cone,diaphram,coil replacemnt available)

ok, that some of experience at jalan pasar pudu. For those lowyat members family's or relative's shop are non listed in my list, pls serve better components and cheaper price and maintaining new/ lastest product in store...

and any one here have experience for jalan pasar part hunting?? kindly share... rclxms.gif  rclxms.gif  rclxms.gif

*answering santik idea, i already went there and ask...
*
rclxms.gif rclxms.gif wow nice info wish it could be reposted on front page so everyone can see...and add other store in JB, Penang and any where else.. smile.gif thanks bro
santik
post Feb 23 2012, 10:38 AM

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QUOTE(Hakimi90 @ Feb 23 2012, 02:36 AM)
hehehe....  thanks for da info..... thumbup.gif

here is my experience and some little knowledge of jalan pasar pudu, been there once every 1 or 2 weeks

Nixie = Lot of project , cytron, uContoller, components, enclusure, most project part are available and general component quite pricey

Online Components = Interesting project available including non ordinary components = Thermolelectric peltier, solar, gadget Li-ion battery

R.E Spares = Lots of spare part and mostly availble, velleman dealer and dare to quote higher price due to availablity. (my last choice of shop)(STk 4048xi available here)

Maplin = Generally like other component shop but here the heatsink cheaper, hobby kits

Darson = Cheapo china electronics product

Melectron = General electronic shop, spares not as much as R.E. , now having CCTV section in front. CT Brand, Pro's Kit, Hakko distributor

Magnumtronic = General elctronic shop, washing machine PCB spares, component as well

Standwell = General electronic shop, have older spares/ part/ also having torroidal transfomer

Meter Trading = General electronics shop, ics are cheaper. (most of my component i bought here)

K.E Electronics = General electronics shop, component are cheaper if bought in bulk  like RM5 for 100pcs LED

"unknown shop" = in same row of Meter and KE, have higher amperes of regulator ics, LM78xx series 2,3 amp rather than normal 1 amp at other       shop . They also provide repackaging laptop battery or custom battery pack.

and newly found a shop that can repair speaker, changing everything as long as you only have magnet and chassis (paper,cone,diaphram,coil replacemnt available)

ok, that some of experience at jalan pasar pudu. For those lowyat members family's or relative's shop are non listed in my list, pls serve better components and cheaper price and maintaining new/ lastest product in store...

and any one here have experience for jalan pasar part hunting?? kindly share... rclxms.gif  rclxms.gif  rclxms.gif

*answering santik idea, i already went there and ask...
*
wow! so cool! good info! Nixie, Standwell and IC Electronics are my favorite shops.


Added on February 23, 2012, 10:39 am
QUOTE(Hakimi90 @ Feb 23 2012, 02:36 AM)
hehehe....  thanks for da info..... thumbup.gif

here is my experience and some little knowledge of jalan pasar pudu, been there once every 1 or 2 weeks

Nixie = Lot of project , cytron, uContoller, components, enclusure, most project part are available and general component quite pricey

Online Components = Interesting project available including non ordinary components = Thermolelectric peltier, solar, gadget Li-ion battery

R.E Spares = Lots of spare part and mostly availble, velleman dealer and dare to quote higher price due to availablity. (my last choice of shop)(STk 4048xi available here)

Maplin = Generally like other component shop but here the heatsink cheaper, hobby kits

Darson = Cheapo china electronics product

Melectron = General electronic shop, spares not as much as R.E. , now having CCTV section in front. CT Brand, Pro's Kit, Hakko distributor

Magnumtronic = General elctronic shop, washing machine PCB spares, component as well

Standwell = General electronic shop, have older spares/ part/ also having torroidal transfomer

Meter Trading = General electronics shop, ics are cheaper. (most of my component i bought here)

K.E Electronics = General electronics shop, component are cheaper if bought in bulk  like RM5 for 100pcs LED

"unknown shop" = in same row of Meter and KE, have higher amperes of regulator ics, LM78xx series 2,3 amp rather than normal 1 amp at other      shop . They also provide repackaging laptop battery or custom battery pack.

and newly found a shop that can repair speaker, changing everything as long as you only have magnet and chassis (paper,cone,diaphram,coil replacemnt available)

ok, that some of experience at jalan pasar pudu. For those lowyat members family's or relative's shop are non listed in my list, pls serve better components and cheaper price and maintaining new/ lastest product in store...

and any one here have experience for jalan pasar part hunting?? kindly share... rclxms.gif  rclxms.gif  rclxms.gif

*answering santik idea, i already went there and ask...
*
you went there to ask and they don't have that chip?

This post has been edited by santik: Feb 23 2012, 10:39 AM
Hakimi90
post Feb 23 2012, 09:35 PM

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santik,

i already ask NiXie and they say not available,

so i'll go to R.E. Spares to get the iC since ONLY they have the IC..even Higher price RM60 each..and the IC only single channel amplification, I need TWO of them for Stereo application and crying for 5.1 application.....
hahha...

santik
post Mar 6 2012, 10:23 PM

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QUOTE(Hakimi90 @ Feb 23 2012, 09:35 PM)
santik,

i already ask NiXie and they say not available,

so i'll go to R.E. Spares to get the iC since ONLY they have the IC..even Higher price RM60 each..and the IC only single channel amplification, I need TWO of them for Stereo application and crying for 5.1 application.....
hahha...
*
well, any good shops that sells casings for electronic projects?

plastic or metal also can. big and small.
Hakimi90
post Mar 7 2012, 07:27 PM

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QUOTE(santik @ Mar 6 2012, 10:23 PM)
well, any good shops that sells casings for electronic projects?

plastic or metal also can. big and small.
*
santik, the casing/enclosure available at Nixie...

user posted image

user posted image

but sometime i re-use PC PSU metal casing... for projects..
like this

ADJ PSU

bigger box available at Maplin Electronic...

This post has been edited by Hakimi90: Mar 7 2012, 07:30 PM
blegh
post Mar 9 2012, 07:58 PM

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I've been wanting to try to build a cmoy for a while. I read the tutorials from tangentsoft web but I can't figure out how to arrange the jumpers if Im using a different board. Any help? Sorry I'm really new to this stuff
BanG_DeaD
post Mar 9 2012, 10:18 PM

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QUOTE(blegh @ Mar 9 2012, 07:58 PM)
I've been wanting to try to build a cmoy for a while. I read the tutorials from tangentsoft web but I can't figure out how to arrange the jumpers if Im using a different board. Any help? Sorry I'm really new to this stuff
*
My stripboard version.. Hopefully there isn't any mistake.. blush.gif
The connection cables (input.output.ground.power) have a 5mm pitch to allow the use of Terminal Blocks.. rclxms.gif


Attached thumbnail(s)
Attached Image
jazzy939
post Mar 10 2012, 01:15 AM

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From: Beaumont, Baile Ath Cliath, EIRE.



Any pictures of the real thing? tongue.gif
BanG_DeaD
post Mar 10 2012, 02:01 AM

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QUOTE(jazzy939 @ Mar 10 2012, 01:15 AM)
Any pictures of the real thing? tongue.gif
*
Only made 1 (posted here before) but not with this design.. biggrin.gif
coffayandtea
post Mar 13 2012, 08:48 AM

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wondering if anyone willing to build me a cmoy? mainly cause i dont know how.....hahahaha pm me if interested?
jazzy939
post Mar 13 2012, 03:09 PM

reel is real
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From: Beaumont, Baile Ath Cliath, EIRE.



You can buy from ebay. Is that possible?

QUOTE(coffayandtea @ Mar 13 2012, 08:48 AM)
wondering if anyone willing to build me a cmoy? mainly cause i dont know how.....hahahaha pm me if interested?
*
totally_skint
post Mar 16 2012, 01:02 AM

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Forget Jalan Pasar!
This is where you want to go. smile.gif



This post has been edited by totally_skint: Mar 16 2012, 01:04 AM
blegh
post Mar 16 2012, 01:22 AM

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QUOTE(BanG_DeaD @ Mar 9 2012, 10:18 PM)
My stripboard version.. Hopefully there isn't any mistake..  blush.gif
The connection cables (input.output.ground.power) have a 5mm pitch to allow the use of Terminal Blocks..  rclxms.gif
*
what is that red and black dots? and the blue line on the left side of the board
BanG_DeaD
post Mar 16 2012, 02:08 AM

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QUOTE(blegh @ Mar 16 2012, 01:22 AM)
what is that red and black dots? and the blue line on the left side of the board
*
Red dots are the track cuts..
Black dots are where the TLE is placed..
Blue line is the jumper..
jazzy939
post Mar 16 2012, 04:14 AM

reel is real
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From: Beaumont, Baile Ath Cliath, EIRE.



Now this is HEAVENS!
I have been to Akihabara (Japan) and its no where near this! thumbup.gif

Jalan Pasar is 'nothing' lor... tongue.gif



QUOTE(totally_skint @ Mar 16 2012, 01:02 AM)
Forget Jalan Pasar!
This is where you want to go. smile.gif


*
BanG_DeaD
post Mar 17 2012, 03:10 PM

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i need help blush.gif
My new Cmoy is producing great sounds but when i measure the dc offset, i get about 90mV on the right and about 5mV on the left.. What should i do? cry.gif
Btw, the cmoy has no volume control and is at max volume (gain 6).. Using WIMA 1uf input caps..

This post has been edited by BanG_DeaD: Mar 17 2012, 06:28 PM
totally_skint
post Mar 18 2012, 01:16 AM

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Where is a good shop to buy FR-4 PCB double and single sided?
And how much do they cost?
Leolabs
post Mar 19 2012, 10:32 AM

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QUOTE(BanG_DeaD @ Mar 17 2012, 03:10 PM)
i need help  blush.gif
My new Cmoy is producing great sounds but when i measure the dc offset, i get about 90mV on the right and about 5mV on the left.. What should i do?  cry.gif
Btw, the cmoy has no volume control and is at max volume (gain 6).. Using WIMA 1uf input caps..
*
Check the input to ground resistor OR replace the OPAMP and see....
LittleGhost
post Mar 19 2012, 04:20 PM

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QUOTE(BanG_DeaD @ Mar 17 2012, 03:10 PM)
i need help  blush.gif
My new Cmoy is producing great sounds but when i measure the dc offset, i get about 90mV on the right and about 5mV on the left.. What should i do?  cry.gif
Btw, the cmoy has no volume control and is at max volume (gain 6).. Using WIMA 1uf input caps..
*
post pictures of your build, make em high res.


BanG_DeaD
post Mar 19 2012, 04:48 PM

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QUOTE(Leolabs @ Mar 19 2012, 10:32 AM)
Check the input to ground resistor OR replace the OPAMP and see....
*
QUOTE(LittleGhost @ Mar 19 2012, 04:20 PM)
post pictures of your build, make em high res.
*
haha.. I need to solder it again because after tweaking it, I made it worst blush.gif Now dc offset at 500mv.. shocking.gif
will post here for help if i can't find the solution..

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