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Headphone amp kit...

 
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ecrabb
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Joined: 13 Mar 2006
Posts: 15909
Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Tue Dec 21, 2010 5:29 am    Post subject: Headphone amp kit...

OK, so I just ordered a decent pair of cans for the office...

http://www.amazon.com/gp/product/B001RB24S2?ie=UTF8&tag=curtpalmecrtp-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B001RB24S2

Nothing great - just a pair of Sonys that are supposed to have really good bass, and from the FR test I found, they look like they can be EQ'd back to pretty flat all the way down to 10hz and below. Cool! It'll be better than at home in the HT with subs!

Anyway, they'll be here Wednesday... If I have to sit at the damn desk all day every day, I might as well listen to some decent music on a decent pair of headphones, right? I'm tired of ear buds - they're uncomfortable and they suck ass. Zero bass. They're about a step up from a clock radio. So, better phones... Yes.

Now, I've noticed when I borrowed some better cans, that the headphone amp in new computers and portable music players are obviously geared more toward driving ear buds, as even (especially?) when you use a larger headphone, they just won't play any bass cleanly... I assume they have no current capability. So, I thought I'd try an amp.

So, has anybody built a headphone amp? Any recommendations? I googled and there seem to be dozens of them... I have no interest in spending $200 on some crazy tube design... I'm thinking along the lines of $50 or less.

Anybody built one of these?

http://tangentsoft.net/audio/cmoy-tutorial

Opinions?

Thanks!
SC
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AnalogRocks
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Joined: 08 Mar 2006
Posts: 26706
Location: Toronto, Ontario, Canada

TV/Projector: Sony 1252Q, AMPRO 4000G

Posted: Tue Dec 21, 2010 6:02 am    Post subject: Re: Headphone amp kit...

ecrabb wrote:
I'm tired of ear buds -..... They're about a step up from a clock radio. So, better phones...
SC


Laughing

Thumbs Up

I was just reading about this topic on Amazon last night. I'm looking for a set of true 5.1 head phones.

What's the impedance of those Sony's?

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dvh99



Joined: 25 Dec 2009
Posts: 2158
Location: nederland

Posted: Tue Dec 21, 2010 7:28 am    Post subject:

for about 40 to 50 usd you can make one yourself.
have a look at diyaudio.com for some ideas, there are plenty.

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ecrabb
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Joined: 13 Mar 2006
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Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Tue Dec 21, 2010 8:06 am    Post subject:

Spec sheet says impedance is 40-ohms, Jeremy.

Hmmm.. Maybe it's not worth scratch-building one... Rolls, ART and Behringer all make headphone amps for less than $50.

http://www.amazon.com/gp/product/B000KIPT30?ie=UTF8&tag=curtpalmecrtp-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000KIPT30

http://www.amazon.com/gp/product/B0010BWLMS?ie=UTF8&tag=curtpalmecrtp-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B0010BWLMS

http://www.amazon.com/gp/product/B000M0TN6U?ie=UTF8&tag=curtpalmecrtp-20&linkCode=as2&camp=1789&creative=390957&creativeASIN=B000M0TN6U

The Rolls and ART is both around $50, while the Behringer is only about $22. The little ART box looks pretty nice and I'm reading lots of positive reviews... Heck, the case alone would probably be $20 if you were DIY'ing.

Hmm....

SC
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dvh99



Joined: 25 Dec 2009
Posts: 2158
Location: nederland

Posted: Tue Dec 21, 2010 9:06 am    Post subject:

diy is often more expensive then you think, components that have to be bought at 50 pieces minimum order, getting a case connectors a board for etching plus the chemicals for etching all adds up.
unless you dont have a lot of stuff around its not worth doing when you can get a 50usd amp from amazon.
building it from scratch if you do not have a single transistor or resistor and etching materials it may cost 200-300 usd to complete.
the addon board i made for the 02p vim was way more expensive then anticipated.

you are right, i wouldnt justify starting from scratch costwise looking at the prices on amazon, but i would make one myself because i have a lot of stuff lying around and for the fun factor.

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ecrabb
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Joined: 13 Mar 2006
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Location: Utah

TV/Projector: JVC RS40, Epson 5010

Posted: Tue Dec 21, 2010 8:18 pm    Post subject:

Good points all around. I do have plenty of supplies like wire, solder, iron, etc... Of course, I'd likely buy a kit that included a manufactured board so I wouldn't have to do that part, and I'm pretty anal and careful, so I wouldn't anticipate any costly mistakes that can blow the cost factor, too...

I also get that building it is part of the fun and enjoyment, but I probably don't need to take on any more projects at the moment, either. Wink

The cans come tomorrow, so I'm going to do a little more looking and will also wait to see what they sound like connected directly to the computer before I spend any more money.

Thanks!

SC
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macgyver655



Joined: 22 Aug 2007
Posts: 8508


Posted: Tue Dec 21, 2010 9:53 pm    Post subject:

Take a pair of powered desktop speakers. The amp is in 1 speaker. Open it up and you'll see the amp. Get a headphone jack for your headphones and wire it to the speaker wires off the amp board. Power it up and plug them in.

I'm sure you have desktop speakers lying around.
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ecrabb
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Joined: 13 Mar 2006
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TV/Projector: JVC RS40, Epson 5010

Posted: Tue Dec 21, 2010 10:40 pm    Post subject:

Hmmm... I think the only desktop speakers I have handy are hissy, scratchy junk... But, that's not a bad idea...

<leaves to go look around the office> Wink

SC
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Curt Palme
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Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC

TV/Projector: All of them!

Posted: Tue Dec 21, 2010 10:40 pm    Post subject:

Mac has a good idea. Also, there are usually kits sold, PC board and parts at decent electronics stores that specialize in parts. Or eBay I'll bet. Smile

BTW, I was in Costco yesterday and saw that they were selling Bose. They had a Bose headphone demo station, so I slipped them on, pushed the button, heard some really bad sounding music, and then a female voice boomed 'now isn't that excellent sound?'


Ummm....NOOO!

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kal
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Joined: 06 Mar 2006
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Location: Ottawa, Canada

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Posted: Wed Dec 22, 2010 12:31 am    Post subject:

Links changed to support the forum! Wink

Kal

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Curt Palme
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Posted: Wed Dec 22, 2010 12:34 am    Post subject:

I'd go with the Rolls. The Behringer is absolute sh*t product, the Rolls is actually US built. I sell a lot of their pro audio stuff, and it's decent.
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WanMan



Joined: 19 Mar 2006
Posts: 10270


Posted: Wed Dec 22, 2010 1:58 am    Post subject:

Let me know how you like these cans, SC. I just surprised the wife when I mentioned she could listen to music on the new setup without using the speakers. I think she's biting on the idea of getting cans like this. Cans, not jugs. Razz And since they'll be plugged into an AVR, I doubt they'll need to be amplified (or can,; no pun intended).
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dvh99



Joined: 25 Dec 2009
Posts: 2158
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Posted: Wed Dec 22, 2010 12:00 pm    Post subject:

kal, can you make a deal with mouser and digikey like amazon so when ordering parts the forum is supported too Mr. Green Cool
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WanMan



Joined: 19 Mar 2006
Posts: 10270


Posted: Sat Jan 08, 2011 1:05 am    Post subject:

So, how do these headphones sound? I was thinking of getting the wife the XB500/700 (through Amazon), but was waiting on feedback on them. Are these the 3.5mm style jack, or the larger 1/4"?
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kal
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Posted: Sat Jan 08, 2011 1:45 am    Post subject:

dvh99 wrote:
kal, can you make a deal with mouser and digikey like amazon so when ordering parts the forum is supported too Mr. Green Cool

No, as they do not have affiliate programs. Sorry!

Kal

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