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dreamie

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Posts posted by dreamie


  1. So is it really too expensive to make pcb in singapore unlike the DIYer in US? unsure.gif

    No. But the chemicals required are restricted items. ie. You can't get them without having a license.

    Farnel carries the ferric chloride granules... can we just buy it? ASK at SLT sells the ferric chloride granule pack (half a KG) at ard $16.50, Silicon Electronics $17 if my memory serves me right.


  2. Get those normal Goot brand. Qutie good and can use for a lifetime. Alternatively can buy the Antex brand one. Don;t think there are much use in the trigger, unless you get soldering stations. party.gif

     

    I bo lui, so i use Goot brand. blush.gif Their 25W one with the tip replaced by a finer one has been serving me well. kicking.gif


  3. Dreamie,

     

    then build your amp first and use your ears as test. IMO the Beyers can't touch the Grados - any Grados (except maybe the SR-60) for Rock. The SR-125 is well withing your budget and the SR-225 is slightly more at S$350. They kick ass!

    Hung Brothers at SLS carry them? Thanks. wink.gif


  4. What kind of tube amp? This is important because some tube amps cant drive low impedence cans (like the EarMax). Also tube amps can sound bright or dark so tonal synergy may be not there.

     

    So let me know what tone you amps is and whether they can handle low impedence cans first. The what's the sonic signature of your source.

     

    If you want one headphone that does it all then get the Beyer DT-931 - if your tube amp is warm sounding. Or the Grado SR-225 if the tube amp can drive low impedence cans. Another alternative is the Beyer DT-880 if you tube or tube hybrid amo is bright sounding like the X-Cans.

     

    All the above cans are avobe your budget but only by a bit - DT-931 is S$330, DT-880 is approx S$450 and the Grado is S$350.

     

    The sencond hand market is of course a better choice but please make sure you can at least test the headphones - you never know how it's been abused.

    Beyer DT931 and DT880 seems nice from your description. wink.gif

     

    May be running tube and solid state altogerther for different genres of music. not sure abt the design of the tube amps i'm building.. no notes, just schematic dry.gif .. currently running it on a 32ohm can.


  5. AKG K501 or HD580/600 (+cable upgrade if you can get cheap/used) or ATH-W100. Depending on your taste they might not be suitable for rock but I have no problems with the above.

    Hmmm.....

     

    Any cans for rocking? party.gif thx again.. maybe run speakers when i'm rocking and can with other music genre..


  6. Just go to any ENT clinic.

    Cheaper alternative is the ENT clinic in Government's hospital. To get subsidised rate, go to polyclinic and get a referral to a hospital ENT clinic of your choice.

    Another DIY alternative - 2 drops of olive oil into your blocked ear 3 times a day. After about 2 weeks, the ear wax will soften and dislodge itself as you speak.

    But the above is only applicable for blocked ear due to ear wax. Doesn't work for hearling loss due to other condition. In doubt please go see your GP or Polyclinic doctor.

    I wouldnt play with the DIY method... blink.gif

     

    btw, is it ex.? Have ou doen it before? Is it painful? smoke.gif TIA!


  7. ok.. to clarify some things here. Received some PMs regarding this thread.

     

    This was made by raptor from CMF. I acquired it from him at a extreme low price happy.gif and modified the circuit within, and made another enclosure for it. I'm in the process of building another tube preamp which should soudn alot better (Tube rectifier happy.gif ) Also building a tube tone control (for bass and treble). The tone control will use ECC83/12AX7.


  8. Good job, why don't show your creation over at the diyer garage at echoloft too.. I'm sure they'll appreciate your work.

     

    If you're building more amps, you might want to consider the TDA7294 chip too. More powerful at 100w.. and it's cheap, at $5 a piece I think. Sound wise it sound rather good. If you built them in mono block version & I'm sure they'll beat those $1000 integrated amp.

    echoloft too high-class for me liao blush.gif

     

    hehe, i'm getting the LM3875 free. innocent.gif


  9. Currentnly embarking on a transistor amp project, followed by a tube amp. Transistor one will be based on the LM3875, whereas tube will be based on the EL84 driven by ECC99. May make another tube preamp based on the 5687 and using tube rectifier, but the price of the choke is putting me off  yucky.gif

    LM3875? For speakers right? Must be the 20W Gainclone monoblocks. Hehe.... Superbly simple project! But they're said to sound very good. =)

     

    One thing to note, it's solid state, not transistor based. The LM3875 is an audio power amplifier; Like an opamp with alot of juice. It's not a transistor like the BD139/ BD140's.

    yea.. gainclone happy.gif

     

    i always call solid state transistor... easier to differentiate between tube and sand state.. happy.gif


  10. sennheiser mx300?!

     

    with THAT sort of equipment you'd better start saving for something a little more serious.

     

    check out our classifieds forum for some more manly equipment to match that manly amp.

    any recommendation? headphone.gif I'm on quite a tight budget now blush.gif Still got lotsa amps to build...


  11. that looks fantastic!

     

    you might want to shield that transformer tho.. tongue.gif

    Hehe.. thanks. biggrin.gif

     

    Making a transformer shield using aluminium one of these days. Currentnly embarking on a transistor amp project, followed by a tube amp. Transistor one will be based on the LM3875, whereas tube will be based on the EL84 driven by ECC99. May make another tube preamp based on the 5687 and using tube rectifier, but the price of the choke is putting me off yucky.gif


  12. what sort of design is that based on dreamie?

    and what cans are you using with it now?

    It is based on 6J6. High voltage rail is only 66V at max. It is built by raptor of CMF. I modified the circuit for better sound quality, groundign and ease of use and control. Based on the schematic here: http://www.oatleyelectronics.com/kits/k055.html

     

    It is built on a PCB. More pre-modded info can be foudn in this thread: http://forums.natriumtech.com/viewtopic.php?t=17648

     

    I'm using cheapo $20 Audio Spec headphones. dry.gif .. the Sennheiser MX300's price tag is tempting me though blush.gif


  13. wub.gif

    user posted image

     

    After struggling with it for 20 hours over 3 days, I have completed it. party.gif

     

    Made using Aluminium and MDF.

     

    Cost:

    Gold RCA plug - $0.60 each ($2.40 total)

    Knobs - $1.20 each ($4.80 total)

    VR - $1 each ($4 total)

    Switch - $2

    Screws - $6

    Tube socket - $1.20 each ($2.40 total)

    O-ring for tube socket - $0.40 each ($0.80 total)

    3-pin power plug - $1.50

    Fuse holder - $2

    Fuse - $1

    Satisfaction - Priceless kicking.gif

     

    I brushed the aluminium for the brushed look and MDF was mildly sanded. A dim blue LED for indicating power status. (don't wanna blind my eyes) Powered through the mains. w00t.gif

    Now just requier a good can to complement this yeah.gif

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