Soldato
I went for the Oscons, although I'm yet to actually do anything with them.
*** The DIY Audio Thread ***
- Thread starter -Ad-
- Start date
Soldato
Still a great choice from what ive heard, im yet to purchase mine but ill be picking up 15 in the next week or two from somewhere, probably the bay!
No problem
I think like you say the US is probably the easiest option.I've had a look at that one and it looks interesting, i'm in no rush so can't hurt to wait, I have to get my DMM, soldering iron and stuff sent from back home anyway which will take about a week or so.
I need some help with the Amp 6.
In the guide i had off the site, it says to solder on 3 resistors, R7, R2 and R4. I have a resistor left over and a R3 space, it says nothing about this.
Also, there are 4 caps in bag 2, i don't know which goes in C2 or C5. I have one 1uf and one 10 uf. I can't tell by the guide as they are all different to what i have.
Is there an updated guide?
Can someone help please.
In the guide i had off the site, it says to solder on 3 resistors, R7, R2 and R4. I have a resistor left over and a R3 space, it says nothing about this.
Also, there are 4 caps in bag 2, i don't know which goes in C2 or C5. I have one 1uf and one 10 uf. I can't tell by the guide as they are all different to what i have.
Is there an updated guide?
Can someone help please.
Soldato
You're probably best off asking on the 41Hz forum, I've not built the amp6 myself, only the amp6 basic.
All I can say is double check everything against the full BOM as you may have some missing parts... Also open a support ticket thing on 41Hz, they are normally very fast in replying.
Good luck.
EDIT: I'm after some 100V 6800uF caps for am amp, the old ones have leaked everywhere.
Anyone know of any that aren't £10+ each as I need 10 of 'em!
Soldato
CMOY should be fine, HD600's are high impedance so I'd try and use a +-15v power supply for lots of voltage swing.
aarvark, cmoy or if you want valves the millet starving student is good.
IF it were me, i would build a cmoy, then once more confident buy a ckIII kit from glassjaraudio. Really good solid state amps. http://www.amb.org/audio/ck2/ this will probably only set you back 70 quid, and it will beat a lot of amps.
Valve amps work great with the hd600's, but they are a more difficult build with lethal voltages throughout.
IF it were me, i would build a cmoy, then once more confident buy a ckIII kit from glassjaraudio. Really good solid state amps. http://www.amb.org/audio/ck2/ this will probably only set you back 70 quid, and it will beat a lot of amps.
Valve amps work great with the hd600's, but they are a more difficult build with lethal voltages throughout.
Associate
- Joined
- 9 Mar 2008
- Posts
- 1,039
Has anyone on here built speaker stands? If so, how did you do it and do you have some pics?
cheers adam, i'll look into them.
Associate
- Joined
- 27 Apr 2004
- Posts
- 2,377
I had the idea of making some the other day actually. They'd be DVD racks and speaker stands in one - DVDs on the bottom and the speakers in/on the top. I'd build them out of MDF and then put a veneer on that.
If I actually come up with a proper design I'll put a picture or two on here.
Soldato
DVD fitting will have to be super tight or the vibration you'll get from a rack full of dvd's will be horrendous!
Associate
Finally got myself a OPA2132 chip for my CMoy. Man what a difference, I was really impressed with the chip I got from the high street but the 2132 is miles better, which it should be for a £3 chip compared to the 60p one. Got it in an enclosure now and going to make another one for my Dad.
Next project will be a Gain Clone amp for some bookshelf speakers. Think I got the design of the two amplifier circuits sorted but I have never made a rectifier circuit with a transformer before.
Next project will be a Gain Clone amp for some bookshelf speakers. Think I got the design of the two amplifier circuits sorted but I have never made a rectifier circuit with a transformer before.
Associate
- Joined
- 9 Mar 2008
- Posts
- 1,039
damian666 built a gainclone from a kit (and i must admit i quite fancy giving one a go). He could probably give you some useful pointers!
Associate
Any guidence would be great. I am going to use the LM3875 chip based on this design:
http://gainphile.blogspot.com/2007/11/47lab-gaincard-based-amp.html
Looks fairly straight forward but as I said before I have not done a mains supply before.
http://gainphile.blogspot.com/2007/11/47lab-gaincard-based-amp.html
Looks fairly straight forward but as I said before I have not done a mains supply before.
Soldato
Ill be quite happy to answer any questions you may have regarding chip amps and what i know, if i can answer i will if not ill point you in the direction of someone that can. My advise would be if your going to get a kit bye a chipamp.com kit, the instructions are easyto follow, its cheap and very effective.
I was most pleasently surprised when i built mine. it surparsed all my expectations in quality and performance so id recommmend them very highly! ive orderd my parts for a 2 chip bridged lm3886 point to point design for each channel.... should be nice!
And this is the little bargain i picked up today, its a cheapy but it will do the job i need it to.
£25 from Netto
LM3886 with psu pcb and amp pcb's in stereo setup shipped form the us (chipamp.com) will cost you around £35 which a complete steal for a pre picked kit, plus trafo and your talking around £50 for a "kick ass" amp (chears rodney reynolds
) the kit in this country will set you back about £50 plus your trafo so really is a steal from the US! the lm3886 is generally conciderd to have superior sound quality though its all subjective :/
I was most pleasently surprised when i built mine. it surparsed all my expectations in quality and performance so id recommmend them very highly! ive orderd my parts for a 2 chip bridged lm3886 point to point design for each channel.... should be nice!
And this is the little bargain i picked up today, its a cheapy but it will do the job i need it to.
£25 from Netto
LM3886 with psu pcb and amp pcb's in stereo setup shipped form the us (chipamp.com) will cost you around £35 which a complete steal for a pre picked kit, plus trafo and your talking around £50 for a "kick ass" amp (chears rodney reynolds
) the kit in this country will set you back about £50 plus your trafo so really is a steal from the US! the lm3886 is generally conciderd to have superior sound quality though its all subjective :/
Last edited:
Associate
- Joined
- 9 Mar 2008
- Posts
- 1,039
Have you done much in the way of case work damian? I had a look at the German site you highlighted on the first page, and combined with a modushop case it could look really nice! Pricey though...