kong xi fa cai to you too Y.C. and all t-amp fans....altho not much posting here

kong xi fa cai direct translation will be congratulation be rich....hahahaha

something like wishing you good fortune ahead

Since not much posting, i made one before CNY. Happy CNY to all t-amp modders.
Here is the most recent mod for my friend t-amp board. Only input cap (3.3uf+0.1uf) and power cap (220UF) replaced. No chance to audit it, as collection is immediate after mod.




Attached thumbnail(s)

hi guys

GONG XI FAT CHAI to all that celebrate it.. success always!!

i am new to this forum. just got the pcb for arjen. just wondering if you guys have the schematic? smd desoldering and soldering is killing me. just wanna try to find alternative for soldering thx. with this pcb i would try to run a full range with 85db sensitivity. finger cross that it will be able to drive it lol...

heard you guys has success with car audio setup. this thing come to mind as well. as it draw same voltage as the car battery. just confirmation. this pcb need 0v and 12vdc right?

can we use -6vdc for the (ground) and +6vdc for the (+12v)?

anyway my car speaker is boston pro acoustic 6.53 with spec below: can this lil t-amp drive it?

http://www.sonicelectronix.com/item_10210_...3C-sup%3E-.html

Speaker Size 6-1/2"
Design 3-way
Tweeter Design Dome
Tweeter Composition Aluminum
Woofer Composition Copolymer
Woofer Surround Butyl Rubber
Peak Power Handling 500 watts
RMS Power Handling 250 watts
Sensitivity 90 dB
Frequency Response 50 - 22000 Hz
Impedance (per voice coil) 3 ohms
Top Mount Depth 2-3/8"
Bottom-mount depth N/A
Cutout Dimensions 5"
3 ohm impedance...

This post has been edited by milen007: Jan 29 2009, 02:38 PM

-6vdc? from the board?

ops maybe i should be clearer. i can ran with psu that has negative and positive regulated supply?

so -6vdc and +6vdc. thx

This post has been edited by milen007: Jan 29 2009, 02:40 PM

oh yeah.. should work!

help!!

i connect the stock module. nothing being change. the dc at the speaker terminals are 60mv and 17mv. is this safe to connect the speaker?

the unit it only power up with 12vdc and has not been connected to anything..

how to lower the dc? thx in adv

thats low.. my dc offsets are in the 100++ mV

KWW, moddin it fro your friend? are they loving it yet

milen007 are you from malaysia? those boston are 3ohm? hmm you can try, the sensitivity is good enough

Huh?

If the pot is in line with the source, there shouldnt be a difference in volume. If there is, something is wrong.

A larger value merely means more input impedance, noise and tracking. Nothing else. If you pay attention carefully the pot is wired as a voltage divider. Since the input of the amplifier is very high (assume infinity), this means that the subsequent stage has a very stiff loading and it should not affect the voltage transfer at all. Do remember that an amplifier is also an impedance transformer.


One should use as low as possible, without sacrificing noise and tracking capability. EDIT: Of course, also not too low until it suffocates the source.

This post has been edited by LittleGhost: Jan 30 2009, 10:48 PM

hi xtorm

me from indonesia. neighboring country. yesp ta2024 looks good with my existing 85db 2 way speakers. it plays quite loud. could shake the house. will try the dc offset mod to zero and other discrete components. maybe give the arjen board few days. as it clear up quite nicely in upper register. nice nice.

on other forum, a user seems to prefer ta2020 such as charlize over the ta2024. how do you guys find?

can i use headamp with my mp3 and loudspeaker? or only for headphones?

yep give it some time to run in, if the highs is harsh, 3.3uf input cap is good

it is for loud speaker, it is not a headphones amp

Hi guys, Gong Xi Fa Cai..been busy with my newborn baby and now only finish 90% of my T-amp in a proper casing..attached is the picture (taken with camera phone, not so clear). It is spray painted in champion white (that is the color code I was told) as my friend do not have the pearl white which I initially planned for. I've not touch up the power button yet.. For the blue LED at volume knob, its a bit too dim, maybe have to get a brighter blue LED as I thought the low brightness type is sufficient...


Attached thumbnail(s)

ME LIKELY!!!

Hammond spraypainted?

nice touch. is that the aluminium case? where do you get it? i saw one guys sell it on ebay, been thinking bout that but havent pull the trigger

No..send to Honda workshop and they use the Type R white....but I really would prefer pearl white...maybe add in a red color line at the volume knob would look sportier

---

Added on February 1, 2009, 11:43 amBought the alum case from Nixie. The difficult part is to get a nice volume knob so I salvage from an old Onkyo amp..but I still need to get allen screw and painted it white to replace those ugly philips screw..

This post has been edited by cyl1000: Feb 1 2009, 11:43 AM

I really must get my hands on that aluminum case.

Eurocard size I presume? How much is it?

How much do they charge for that kind of spray service. It does give me ideas for giving it a commercial look.

The alum case cost more than the T-amp..for the spray service..FOC coz sending car for them to service regularly.. How commercial you had in mind??

---

Added on February 1, 2009, 11:55 amBTW, the case price is RM100..

This post has been edited by cyl1000: Feb 1 2009, 11:55 AM

Allu Alloy?

It's slightly cheaper than the Hammond Equivalent. Boleh consider.

How commercial? Maybe spray painted logo/words using templates. Perhaps cheaper than regular laser etching?