Anyone got really efficient speakers?

Ant

Wammer
Wammer
Aug 5, 2005
3,909
2
68
Hythe, Kent
AKA
Antony
Anyone got anything in the 100's DBw? I am wondering if a CDP that puts out 3 volts (quite a lot at the moment) would be able to drive them on it's own.

Just an experiment.

 

Dynamic Turtle

Wammer
Wammer
Sep 23, 2005
743
0
0
HADOOOOKEN!!!!, ,
?

So your cd player has binding posts then??

tongue.png


 

gaul

Wammer
Wammer
Jul 22, 2005
2,584
0
0
LONDON, ,
Dave, who is the most clever of us all!
thumbs_up.gif.3c8ee62eda0e86146178ab30b9facd86.gif
:nerd:

Why bothering which expensive and mega-power electronics if you start building a system around INEFFICIENT speakers?
shock.gif.7732780fe7e208b945ce79ca96402fca.gif


 

MartinC

Wammer
Wammer
Jul 29, 2005
9,072
5,309
158
HiFi Trade?
  1. No
Ant wrote:

Anyone got anything in the 100's DBw? I am wondering if a CDP that puts out 3 volts (quite a lot at the moment) would be able to drive them on it's own.
Interesting question, but I suspect there'll be problems due to output impedance and current capability.

The CD player is designed to connect to a high impedance load (~20kOhm + I think), rather than say an 8 Ohm speaker load, and would normally only deliver tiny currents. My understanding of electronics is crap so I'm guessing here, but I wouldn't be surprised to find that connecting a CD player directly to a loudspeaker would damage it's output stage.

(Oh, and I know this is pedantic, but it's dB/W not DBw...)

 

MartinC

Wammer
Wammer
Jul 29, 2005
9,072
5,309
158
HiFi Trade?
  1. No
Ant wrote:

Pedant
tongue.png
I would fully expect it to sound crap. I just wanted to try it.
For my sins I'm practically a professional pedant (physicist)
sad.png
. I'm also therefore all for trying stuff too
crazy_pilot.gif.c313d97f4d9ddf9c49c568cf60659106.gif
, but possibly not if it might kill a CD player? Like I said my electronics is crap so I don't know, but I wouldn't blindly try it until someone who knows what they're talking about (i.e. not me!) says it'll be OK.

I wonder if you could make a CD player to directly drive really efficient speakers though?

 

Leonard Smalls

Wammer
Wammer
Aug 14, 2005
8,201
89
0
Shropshire Borders,
You could use a cdp with a 3v output to power pro type PA or instrument speakers...

My bass bin has an efficiency of somewhere around 108dB/w, and I have heard of speakers up to 111!

 

Ant

Wammer
Wammer
Aug 5, 2005
3,909
2
68
Hythe, Kent
AKA
Antony
Ah but here is the beuty of my plan. The output stage of the CD player will likely explode and then I can rid the world of these horrible devices
smile.png


 

Ant

Wammer
Wammer
Aug 5, 2005
3,909
2
68
Hythe, Kent
AKA
Antony
In all honesty the output impedance will be in the middle tens for a normal CDP 50ish, thats probably down to the lack of feedback employed in the circuit, but of course thats just me guessing. I know that some of the valve designs I've done have had 3 ohm impedance and my 303's are way down in the 0.02 ohm range.

 

MartinC

Wammer
Wammer
Jul 29, 2005
9,072
5,309
158
HiFi Trade?
  1. No
Ant wrote:

In all honesty the output impedance will be in the middle tens for a normal CDP 50ish,
Yeah, that sounds the right sort of figure to me.

 

Forum statistics

Threads
109,296
Messages
2,317,207
Members
69,450
Latest member
RichShortland