hope to hear review of you soon alamaklor, for dynalo... hehehehe first review of dynalo in lyn...

bump up this topic

I have received several pms regarding the amps that i am building. Currently, I am working on a portable amp that would be used to power low impedance phones.

there would be a bass boost feature, variable volume or possibly fixed. reason for having bassboost is due to the there maybe or may not be a crossfeed feature on it (speaker emulation), as personally i dont like it and everything adds up to cost, which would then be transferred to the price.

it would take in 2 X 9v (pretty typical in portable amp market), or if possible 12 X AAA (best with Ni-MH Rechargeables). personally i prefer the latter oh btw, may be......dc powered.

the casing, is an extruded aluminium chassis, if u dont know what is extruded aluminium.....well basically the whole casing is in one piece without any seam, you can run a car over it and it will still be in perfect shape....minus the scratches you can also use the amp to slam other's ipod to pieces, yet still having a good shape in the end so you got the idea

the price? it's not gonna be cheap anyone should be able to know that with some common sense these are going to be retail in the future.

pics will be up when it is ready, no ETA as i usually cant make it haha

Alamak, just wanna ask. in case i need an opamp, can i get it through you?

right now i'm using Burr-Brown OPA2604AP dual opamp, and i'm in the process of transferring the whole amp onto a new circuit board and casing. i'm afraid i might have burnt the opamp while desoldering (i didnt use a socket). i can't test this yet coz my headphones have gone kaput.

Alamaklor..Where is the pictures? Can't wait to see ur Bulletproof Headamp casing!

How much u estimate the price of ur DIY amp?

yup, u can order the opamps from me, but i will only take note and make the order when i make my next order

picture? i just finished drawing the schematics earlier havent even bought the casing, so how can i show any pics?

Alamaklor,

is der any ppl use TUBE AMP for portable amp? maybe dig a hole inside the steel box to protect it from impact?! haha. i dunno.

(i still waiting to test Pcwork headamp when he come to KL..haiyo u live too far away from us)

Check this out guy.. How is this thing work? It is such a beauty to me!.
http://www.e-dot.com/TubeAmpImages/TubeAmpE.jpg

This post has been edited by dinodog_Jr: Jun 14 2005, 12:12 PM

um no.....tube amp needs lots of voltage, not possibly portable at all...at least cannot be battery powered

its just temporary i live near oug in msia.

alamaklor, handphone batt can be use with the amp or nor?


if i wanna put the headamp to be charge via USB port is that possible? usb port only 5V only. do you have similar schematic for that purpose?

Yeah..This is goin to be even portable headamp & saving my fussy to bring along charger!

Input(poot) ...poot~ poot~ poot~ pls..

usb port is too noisy, forget about it

hehehe
just suggestion. if add some filter in ,then what left might be 2V? and you need to charge up 8 AAA battery.. hm.. maybe it take 48 hours?..... hehehehe

This post has been edited by PcWork: Jun 14 2005, 10:04 PM

yay, my cmoy finaly sing~ and it sound sweet, bass is much more better.
but too bad my digi cam is with my GF. can't take picture recently.

congratulation then...send some picture...ok?

This post has been edited by rioven: Jun 29 2005, 02:52 AM

i will, ,after i go back to UPM on 9th of july and get back my digi cam.

wah..haf to wait so long ahhh...........

how many headamp u had made PC work?

how is the batt life?

update update pls~

Ahoy there!..you're supposed to show us some pics of your project?..what happened?, no sound from you?.. or it turned you deaf arrr??

yo alamaklor u got the schematics for a good headphone amp?
im plannig to build one after getting my soundcard but i have no fkin idea on which is good.... output... etc

www.headwize.com have a bunch.

google for tangentsoft (audiologica) site and u may find pimeta, cmoy, mint, and ppa schems there. u can also get gilmore's schemes from headamp, or kevin gilmore's site directly.

cool
thx man