1bit

this can be a very good news for those who have not bought 470uF caps yet. the panasonic fm caps 470uF 16V are back in stock now in farnell at 71 cents each. at the moment only 198 units are available in farnell uk warehouse!!! for the multilayer cap, you can use the cheaper epcos at 23 cents each, instead of the vishay bc at 80 or 90 cents each iirc. it is stated in the farnell website it has value of 100nF which is actually the same as 0.1uF, but might be overlooked when we only looking for 0.1uF this knob will fit perfectly with the alps pot, although it is a bit expensive. aluminum knob, the black colored ones are unfortunately not in stock.

hi huangyong, nice to see you back

supraaural= rest on the ear circumaural= rest around the ear

haha an insider joke there haha true true the panasonic fm seems to fit the job well (low esr, size within specified limit) and cheap (71 cents) as well, so unfortunate it's out of stock. there's a rubycon cap that can replace it, the problem is that it come in 8x16mm and 10x12.5mm sizes (diameterxheight)

hi does anyone know if koba has the multilayer ceramic capacitor in stock?

hi guys, do you mind sharing what brand of capacitors do you use? especially for the electrolytic ones. and where do you get them from? for the bypass caps do they need to be multilayer ceramics? they cost 80 cents a piece at farnell

as ezzo has said: can someone please verify first how to fit the panel to the hammond casing? and will it fit nicely there? sorry i have no idea about the design of the hammond case, and just worried that after making the panels turned out it won't fit properly and whatnot.

wow gee thanks a lot for your effort in sourcing for the plates, mouz! excellent job there! i really appreciate it

No, it's not possible Like most electronic devices, there's efficiency factor in the regulator. The regulator ic (LM7812 in this case) will need an input power to power its operation, that is to regulate the output voltage to 12 V, it needs 12 V to be passed through and additional voltage to power its circuit. Usually they need at least 3V up from the regulated voltage and achieve max output current at 5-6V above regulated voltage. It's quite inefficient, if I'm not wrong there's another linear regulator IC that's more efficient but I can't remember the number). Other alternative will be to use switching mode power supply (instead of linear regulator). The 24V limit is set by the electrolytic capacitor C2 with voltage rating 25V. If the input is already regulated I think you can remove the 7812 IC and connect the input to output node directly, leave the common node open. Knobs: Yes, I'm also wondering about this anybody knows a good shop/source?

lol then in that case you should have offer him through pm

there's pa2v2 headamp for sale in the classified for $70 check it out here

hi heady, i would like to order 2 sets of the high performance ones (US$24.05) so total US$48.10 thank you

sorry out of topic, probably someone can just pm me can i know how much are they selling the alps pot in well's audio?

hi heady can we buy other stuffs from amb website as well? i'm interested in getting some alps blue velvet pots

oh, looks like you've already post your questions here, ezzo 1) for cmoy2, it seems the only source is jasonhanjk, tropicalrips is not selling them anymore. i'm also trying to get a few more pcb from jason and have sent him pm but so far no response. anyone knows other channels? pimeta pcbs can be bought from tangent http://tangentsoft.net/shop/ 2) well they are quite similar yet quite different lol they are both 3-channel amp design (if we can say so) pimeta uses a combination of opamp and buffer, the opamp to get voltage gain and buffer to supply current whereas cmoy2 uses jung's multiloop design putting two opamps (in 1 channel) to work in sort of "paralel" (not really in paralel in the true meaning, but nonetheless share the current load together) and doesn't use separate buffer. to create virtual ground, cmoy2 uses two resistors; whereas pimeta uses tle2426 ic (cost and pcb space savings for cmoy2) another difference (perhaps the most important) is that pimeta bias the opamps to work in class a mode by forcing to draw more quiescent current from them (probably will reduce battery life) another observation is that cmoy2 pcb is smaller and can fit in an altoids mint tin with a 9v battery. another thing, (but probably not verified) cmoy2 uses lm6171, a bipolar opamp as buffer for the ground channel. the chip might be the possible cause of nonstability (distortion) of the amp if the power (or ground) to that chip is not soldered properly. happy diy-ing

i bought my altoids tin at jurong point's liberty about 2 years ago. they might still carry it. you can also try jason's market at raffles city. i think they should have it but i'm not really sure. hope this helps.

whoops sorry, lol never realize this, so that means i always went there on saturdays last time.

welcome to sgheadphone!!! still in sec 3? wow that's great! well, i think one of the friendliest place to look for parts is Koba. it is at people's park centre and it sells a very wide range of surplus components most notably capacitors. you can print the parts list from tangensoft and bring it to the shop, there you can ask the young clerk (i think he's the owner's son) to help you. and another good thing about the shop is that it opens during the weekend unlike the shops at sim lim tower. The next best place to shop is of course sim lim tower. there are many shops there with different specialties. you probably wanna check out federal components, you can get different kinds of ic (including opamps) there. Another alternative is to buy online from farnell or rs component. they have most of the stuff that you need including the potentiometer for the amp's volume control. but you'll need debit/credit card to shop there. well the thing about amp is that it improves sound but in unexpected ways most of the time. mm i dunno it's just my opinion i guess. but anyway, it's quite fun building diy electronics, the end result is not too important in this case. The most basic set of tools will be solder, soldering irons (and its holder with sponge to clean it), and solder sucker. try to get soldering iron with a fine tip although it can be more expensive. another optional tool is the multimeter, but this is only if you know how to use it. well that's it for now, good luck on your first electronic project and have fun. hope you don't scald your fingertips while soldering though lol.

Unfortunately AD8610 is not offered in dual inline packages, they are only manufactured in surface mount packages i.e. soic and msop

Hi Rameish and all well I'm not really involved in the digi01 mass order, but I think it's a good idea to start a new thread with an appropriate title, the purpose of which is to consolidate all the outstanding issues between sgheadphones members and digi01. I'm concerned that the people who are actually involved might be unaware of this because the thread title is somewhat unrelated. btw, here is the original thread for the digi01 soha and buffer's mass orders http://www.sgheadphones.net/index.php?showtopic=4583

Have you heard a group called Boney M? Their music is disco like and they're from the same time period as earth wind and fire.

Incubus - Light Grenades

iirc stereo electronics has one set of 7506 (or is it v6? not very sure) when i visited them like 6 months ago. well if you browse our headphone shop resource page here, you'll find out that one of the shop is at mustafa shopping centre. but the list was last updated 12 dec 2005, so please check it out yourself. if you like the quality of the 7506, you might wanna check out the latest sony professional headphone i.e. mdr-7509hd. probably it has similar sound characteristic and one thing for sure the pad is truly circumaural (larger than 7506) according to this review.

i think stopping when it starts to feel uncomfortable is safe enough. note that uncomfortable does not mean pain. if you feel pain, you really must stop listening. uncomfortable is when your ears feel hot and itchy, and well basically unmounting your headphone brings you relief. another point when i think you should stop listening is when your mind starts to get saturated by the music, so that you're not actually enjoying the music.