Speaker amps for headphones
- Thread starter Operakid
- Start date
Gary in MD
500+ Head-Fier
- Joined
- Jun 28, 2012
- Posts
- 696
- Likes
- 101
Oh wait...
Here they are!
Can't get much simpler, but I'm still thinking I'd mess it up if I tried to do it myself... or take hours and hours, which makes the $100 cost to have him build it worth it to me, particularly given that the parts aside from the resistors are probably about 1/2 of that amount. And then if I was doing it there'd be the replacement parts after I screwed up the first couple of times...
Here they are!
Can't get much simpler, but I'm still thinking I'd mess it up if I tried to do it myself... or take hours and hours, which makes the $100 cost to have him build it worth it to me, particularly given that the parts aside from the resistors are probably about 1/2 of that amount. And then if I was doing it there'd be the replacement parts after I screwed up the first couple of times...
I would guess that the 10ohms are parallel and the the 2ohms in series? What is the impedance of your headphone?
edit: Wait, I think the 2ohms is parallel and the 10ohms is in series. Like this
+ --+----10ohms----+
| | +
Amp 2ohms HP
| | -
- --+---------------+
edit: Wait, I think the 2ohms is parallel and the 10ohms is in series. Like this
+ --+----10ohms----+
| | +
Amp 2ohms HP
| | -
- --+---------------+
If this box is paired with the HE-6 50ohms, the impedance seen by the amp would be 1.9ohms
.
These resistors look different than the Mills I use.
These resistors look different than the Mills I use.
khaine1711
500+ Head-Fier
- Joined
- Dec 12, 2011
- Posts
- 914
- Likes
- 152
Hmm they looks like the Mills I used (glossy metal), but then I did see a picture of mills in a rougher enclosure. Kinda bug me at first that I can't find the Mills that look exactly like this picture below - but they are the same I think, just different enclosure?
nk77
500+ Head-Fier
- Joined
- Apr 26, 2012
- Posts
- 672
- Likes
- 16
Quote:
Did you solder it on or are they clamped into the speaker terminals?
Hmm they looks like the Mills I used (glossy metal), but then I did see a picture of mills in a rougher enclosure. Kinda bug me at first that I can't find the Mills that look exactly like this picture below - but they are the same I think, just different enclosure?
Did you solder it on or are they clamped into the speaker terminals?
nk77
500+ Head-Fier
- Joined
- Apr 26, 2012
- Posts
- 672
- Likes
- 16
Quote:
So somebody school me - wouldn't this (1.9 ohms) be dangerous if the amp sees a load much less than what its rated for? I am assuming that in general speaker amps are rated to 4/8 ohms..
EDIT: I'm just realising that the current draw probably won't exceed what the speaker amp is capable of...no?
If this box is paired with the HE-6 50ohms, the impedance seen by the amp would be 1.9ohms.
These resistors look different than the Mills I use.
So somebody school me - wouldn't this (1.9 ohms) be dangerous if the amp sees a load much less than what its rated for? I am assuming that in general speaker amps are rated to 4/8 ohms..
EDIT: I'm just realising that the current draw probably won't exceed what the speaker amp is capable of...no?
Gary in MD
500+ Head-Fier
- Joined
- Jun 28, 2012
- Posts
- 696
- Likes
- 101
Here's the circuit diagram Jan provided much earlier:
The headphones are 45-ohm LCD-3s.
The headphones are 45-ohm LCD-3s.
khaine1711
500+ Head-Fier
- Joined
- Dec 12, 2011
- Posts
- 914
- Likes
- 152
Quote:
That is Grokit's amp. I did the same to mine - old picture but you get the gist.
Most speaker binding posts have a small hole, right below the screw/cap - for people who uses bare wire instead of banana/spade. I just put the leg of the resistor in and screw on - tight and snug
.
That is Grokit's amp. I did the same to mine - old picture but you get the gist.
Most speaker binding posts have a small hole, right below the screw/cap - for people who uses bare wire instead of banana/spade. I just put the leg of the resistor in and screw on - tight and snug
That's not soldered. That's a 5-way binding post speaker terminals, the hp is using banana plugs and the resistors are tightened by the screw type speaker terminals.
nk77
500+ Head-Fier
- Joined
- Apr 26, 2012
- Posts
- 672
- Likes
- 16
Quote:
Was just wondering if a slight knock on the amp might loosen the clamp on the resistors...just a worry wart I am.
Was just wondering if a slight knock on the amp might loosen the clamp on the resistors...just a worry wart I am.
Quote:
Try the 4 Ohms.
That is Grokit's amp. I did the same to mine - old picture but you get the gist.
Most speaker binding posts have a small hole, right below the screw/cap - for people who uses bare wire instead of banana/spade. I just put the leg of the resistor in and screw on - tight and snug.
Try the 4 Ohms.
khaine1711
500+ Head-Fier
- Joined
- Dec 12, 2011
- Posts
- 914
- Likes
- 152
Quote:
Close pic- loose
Tightened up
Unless you forcefully pull the resistors out, even an earthquake might not shake them off
Hmm looks interesting, did you tuck the resistor leg inside the spades?
Close pic- loose
Tightened up
Unless you forcefully pull the resistors out, even an earthquake might not shake them off
Hmm looks interesting, did you tuck the resistor leg inside the spades?
Gary in MD
500+ Head-Fier
- Joined
- Jun 28, 2012
- Posts
- 696
- Likes
- 101
Folks:
I can't see the circuit diagram in my post above, so here's the link to the post I stole it from:
http://www.head-fi.org/t/629352/he-500-lcd2-d5000-dt770-sr80-on-a-speaker-amp-emotiva-mini-x-a-100-project/1020
Post #1026, halfway down the page.
I can't see the circuit diagram in my post above, so here's the link to the post I stole it from:
http://www.head-fi.org/t/629352/he-500-lcd2-d5000-dt770-sr80-on-a-speaker-amp-emotiva-mini-x-a-100-project/1020
Post #1026, halfway down the page.
Yes, the spades are screw types.
Users who are viewing this thread
