I bought some LED's to replace my Halogen spots ...
http://www.ledhut.co.uk/spot-lights/...net-price.html

Although these are classed as ideal Halogen replacements ... I was very
disappointed with light output ...

The rooms had standard 50W halogen bulbs ...which I think are ~600 Lumen


The LED are a very poor light output in comparison .... OK I could get
higher ... but 4W LED are in region of £7.40 you go to 6W and they are
double the price.

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

On 18/01/2014 10:00, Rick Hughes wrote:

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

As I have mentioned in the past, a 3 LED Cree 9W MR16 is a resonable
replacement for a 50W halogen. The output (measured with a lux meter) is
actually slightly higher than the 50W halogen it replaced.

The one I got was like:

http://www.ebay.co.uk/itm/COOL-or-WA...em3a891 49543



--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

On 18/01/2014 10:17, John Rumm wrote:
On 18/01/2014 10:00, Rick Hughes wrote:

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

As I have mentioned in the past, a 3 LED Cree 9W MR16 is a resonable
replacement for a 50W halogen. The output (measured with a lux meter) is
actually slightly higher than the 50W halogen it replaced.

The one I got was like:

http://www.ebay.co.uk/itm/COOL-or-WA...em3a891 49543


How do you find they last ? ....... I bought the LED Hut ones as a 5yr
warranty.
Also do you happen to know what beam angle is ? need wide angle.

On 18 Jan 2014, Rick Hughes
grunted:

On 18/01/2014 10:17, John Rumm wrote:
On 18/01/2014 10:00, Rick Hughes wrote:

Just wanted to let others know the 'hype' that a 4W LED will replace
a 50W halogen, may be true for electrical connectivity ... but only
50% of the light output.

As it happens, this morning I replaced 4 x 35W MR16 halogens in the
bathroom with exactly those LED models (warm white / non-dimmable
version) - I actually find the replacements too bright (I appreciate
they were replacing 35W halogens though. I'm surprised you find yours
so bad. Someone else mentioned the need to change transformers; I don;t
know if that might be a factor?

I already put the GU10 versions in the kitchen, where they did replace
50W halogens, and I find there's little in it there. They might be
*slightly* dimmer, but certainly adequate anyway.

As I have mentioned in the past, a 3 LED Cree 9W MR16 is a resonable
replacement for a 50W halogen. The output (measured with a lux meter)
is actually slightly higher than the 50W halogen it replaced.

The one I got was like:

http://www.ebay.co.uk/itm/COOL-or-WA...ABLE-CREE-LED-
Light
-Bulb-Downlights-Bathroom-Kitchen-UK-/251407930691?
pt=UK_Light_Bulbs&v
ar=&hash=item3a89149543

How do you find they last ? ....... I bought the LED Hut ones as a 5yr
warranty.

My oldest LEDHut ones have only been in since last May; haven't
experienced any problems with any of them since fitting (not that I
would expect to in that timescale!). I've got one other LED
downlighter, in a shower cubicle; that one's a Toolstation 5.4W G10 and
has been fine too, since fitting in Nov 2011. LEDhut reckon their bulbs
should be good for 5 years of continuous use; in effect lasting
indefinitely in many applications.

Don't know if you've read the "Important Information for LED Buyers"
link on the LEDHut home page, but they claim that all LED bulbs are not
alike and basically to watch out for cheapp crap - make of that what you
will.


--
David

On 18 Jan 2014, Lobster grunted:

On 18 Jan 2014, Rick Hughes
grunted:

On 18/01/2014 10:17, John Rumm wrote:
On 18/01/2014 10:00, Rick Hughes wrote:

Just wanted to let others know the 'hype' that a 4W LED will replace
a 50W halogen, may be true for electrical connectivity ... but only
50% of the light output.

As it happens, this morning I replaced 4 x 35W MR16 halogens in the
bathroom with exactly those LED models (warm white / non-dimmable
version) - I actually find the replacements too bright (I appreciate
they were replacing 35W halogens though. I'm surprised you find yours
so bad. Someone else mentioned the need to change transformers; I don;t
know if that might be a factor?

Follow-up...

SWMBO has just decreed that in fact the new LED downlighters are indeed too
bright, and henceforth shall be replaced. FFS. Bloody irritating as (a)
LEDHut don't appear to sell an equivalent wide-angle downlighter of lower
power and (b) the option of using a dimmer is not attractive as the lights
are controlled from a 3-gang switch.

Though, it's interesting that the LED market definitely seems to have
evolved from where the sticking point was that they were too dim for
practical use!

--
David

On 19/01/2014 12:27, Lobster wrote:
SWMBO has just decreed that in fact the new LED downlighters are indeed too
bright, and henceforth shall be replaced.

Put some black tape over a few of them

Andy

On 18/01/2014 11:36, Rick Hughes wrote:
On 18/01/2014 10:17, John Rumm wrote:
On 18/01/2014 10:00, Rick Hughes wrote:

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

As I have mentioned in the past, a 3 LED Cree 9W MR16 is a resonable
replacement for a 50W halogen. The output (measured with a lux meter) is
actually slightly higher than the 50W halogen it replaced.

The one I got was like:

http://www.ebay.co.uk/itm/COOL-or-WA...em3a891 49543



How do you find they last ?

So far, had one a couple of years... originally paid about £10 for it -
but they are half that now.

....... I bought the LED Hut ones as a 5yr
warranty.
Also do you happen to know what beam angle is ? need wide angle.

Not got the box anymore so can't be sure. At least 35 degrees I would
guess. (mine are 10' up, so its not much of a problem - but it does not
appear any narrower than the halogens)


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

"Rick Hughes" wrote in message
...
I bought some LED's to replace my Halogen spots ...
http://www.ledhut.co.uk/spot-lights/...net-price.html

Although these are classed as ideal Halogen replacements ... I was very
disappointed with light output ...

The rooms had standard 50W halogen bulbs ...which I think are ~600 Lumen


The LED are a very poor light output in comparison .... OK I could get
higher ... but 4W LED are in region of £7.40 you go to 6W and they are
double the price.

Just wanted to let others know the 'hype' that a 4W LED will replace a 50W
halogen, may be true for electrical connectivity

what on earth is electrical connectivity?

tim

On 18/01/2014 10:45, tim...... wrote:

what on earth is electrical connectivity?

tim


The ability to simply plug teh bulb in so it has 'electrical
connectivity' with no change to wiring, fitting or transformer.

"Rick Hughes" wrote in message
...

On 18/01/2014 10:45, tim...... wrote:

what on earth is electrical connectivity?

tim


The ability to simply plug teh bulb in so it has 'electrical connectivity'
with no change to wiring, fitting or transformer.

Reading this, was your transformer suitable? I see on the page to which you
linked that there is this statement:
qPLEASE REMEMBER:
These 12v LED lights need to run off a Driver/Transformer. Your existing
transformer may not be LED compatible. Please visit our transformer section
if you require new transformers.
/q
with a link to:
http://www.ledhut.co.uk/led-driver-transformers.html

Rick Hughes wrote:

I bought some LED's to replace my Halogen spots ...
http://www.ledhut.co.uk/spot-lights/...net-price.html

Although these are classed as ideal Halogen replacements ... I was very
disappointed with light output ...

The rooms had standard 50W halogen bulbs ...which I think are ~600 Lumen

The LED are a very poor light output in comparison .... OK I could get
higher ... but 4W LED are in region of £7.40 you go to 6W and they are
double the price.

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

I'm not suprised it looks dim.

The beam angle is 120 deg - compared to this lamp

http://www.amazon.co.uk/dp/B004YD64FO

which has a 36 deg beam angle, you're spreading less lumens (320
compared to 650) over something like 5 times the floor area or roughly
one-tenth of the light per square foot.

Brightness - area coverage - cheapness

....pick any two.

--
Terry Fields

On 18/01/2014 11:04, Terry Fields wrote:
Rick Hughes wrote:


I'm not suprised it looks dim.

The beam angle is 120 deg - compared to this lamp

http://www.amazon.co.uk/dp/B004YD64FO

which has a 36 deg beam angle, you're spreading less lumens (320
compared to 650) over something like 5 times the floor area or roughly
one-tenth of the light per square foot.

Brightness - area coverage - cheapness

...pick any two.

I want the wide beam angle though or rooms will have area with no light
.......

Rick Hughes wrote:

On 18/01/2014 11:04, Terry Fields wrote:
Rick Hughes wrote:

I'm not suprised it looks dim.

The beam angle is 120 deg - compared to this lamp

http://www.amazon.co.uk/dp/B004YD64FO

which has a 36 deg beam angle, you're spreading less lumens (320
compared to 650) over something like 5 times the floor area or roughly
one-tenth of the light per square foot.

Brightness - area coverage - cheapness

...pick any two.

I want the wide beam angle though or rooms will have area with no light

Then you need 10 of them for the same light level.

--
Terry Fields

On 18/01/2014 11:44, Terry Fields wrote:

On 18/01/2014 11:04, Terry Fields wrote:


Then you need 10 of them for the same light level.



Would blow away any cost savings as it would need a load of extra light
fittings.

My point of the mail was that the 4W I bought are touted as replacement
for 50W halogens .. and they simply are not ... 4W LED does not give
same light output as 50W Halogen ... almost 50% less
Adverts are misleading .... I am returning all my 4W bulbs, at least
they have a no-quibble return policy.

The link John Rumm posted is one I will follow up on, if they are avail
in 120 angle I'll try them.

Rick Hughes wrote:

My point of the mail was that the 4W I bought are touted as replacement
for 50W halogens .. and they simply are not ... 4W LED does not give
same light output as 50W Halogen ... almost 50% less
Adverts are misleading .... I am returning all my 4W bulbs, at least
they have a no-quibble return policy.

The link John Rumm posted is one I will follow up on, if they are avail
in 120 angle I'll try them.

Well, you might suffer a similar disappointment, as the information on
that link contains almost no technical information. In particular, no
beam angle is mentioned, and neither is the lumen output.

--
Terry Fields

On 18/01/2014 13:04, Rick Hughes wrote:
On 18/01/2014 11:44, Terry Fields wrote:

On 18/01/2014 11:04, Terry Fields wrote:


Then you need 10 of them for the same light level.



Would blow away any cost savings as it would need a load of extra light
fittings.

My point of the mail was that the 4W I bought are touted as replacement
for 50W halogens .. and they simply are not ... 4W LED does not give
same light output as 50W Halogen ... almost 50% less
Adverts are misleading .... I am returning all my 4W bulbs, at least
they have a no-quibble return policy.

The link John Rumm posted is one I will follow up on, if they are avail
in 120 angle I'll try them.

MR16s by their very nature are designed to be moderately directional.
The 3 LED cree one I have is comparable to the halogens it shares a
fitting with, but I doubt any of them are close to 120 degrees.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Rick Hughes wrote:

Terry Fields wrote:

Brightness - area coverage - cheapness
...pick any two.

I want the wide beam angle though or rooms will have area with no light

In my study/box room I have a ceiling mounted halogen track

http://www.ikea.com/gb/en/images/products/husinge-ceiling-track--spots__0138870_PE298682_S4.JPG

It's had five 50W halogens in it (on a dimmer) for years, I bought the
ledhut daylight 4.5W wide-angle COB bulbs, was originally intending to
use them with an LED specific dimmer, but that was too flickery for my
eyes, so I've rewired it using a two-gang switch, so that bulbs 1,3&5
fire forwards onto the desk, and bulbs 2&4 reflect off the wall into the
room in general, and are independently switchable

No problem with equivalent brightness, though I "wasted" 50p per bulb by
going for the dimmable option, they do nearly blind you if you stand
where one is aimed into your eyes.

In article ,
Andy Burns wrote:
No problem with equivalent brightness, though I "wasted" 50p per bulb by
going for the dimmable option, they do nearly blind you if you stand
where one is aimed into your eyes.

Common with LEDs - they look brighter than tungsten when looking *at*
them, but don't produce the same lighting level where it matters.

--
*Fax is stronger than fiction *

Dave Plowman London SW
To e-mail, change noise into sound.

On Saturday, January 18, 2014 11:04:29 AM UTC, Terry Fields wrote:
Rick Hughes wrote:



I bought some LED's to replace my Halogen spots ...

http://www.ledhut.co.uk/spot-lights/...net-price.html



Although these are classed as ideal Halogen replacements ... I was very

disappointed with light output ...



The rooms had standard 50W halogen bulbs ...which I think are ~600 Lumen



The LED are a very poor light output in comparison .... OK I could get

higher ... but 4W LED are in region of �7.40 you go to 6W and they are

double the price.



Just wanted to let others know the 'hype' that a 4W LED will replace a

50W halogen, may be true for electrical connectivity ... but only 50% of

the light output.



I'm not suprised it looks dim.



The beam angle is 120 deg - compared to this lamp



http://www.amazon.co.uk/dp/B004YD64FO



which has a 36 deg beam angle, you're spreading less lumens (320

compared to 650) over something like 5 times the floor area or roughly

one-tenth of the light per square foot.



Brightness - area coverage - cheapness



...pick any two.



--

Terry Fields

With respect to the lamps in the Amazon link, what does 'dichroic' mean in describing these bulbs as the meaning I find via google does not seem to relate; that is very basically dichroic is 2 colours.

Rob

robgraham wrote:

With respect to the lamps in the Amazon link, what does 'dichroic'
mean in describing these bulbs as the meaning I find via google does
not seem to relate; that is very basically dichroic is 2 colours.

the two "colours" it relates to for the halogen lamps is "visible" and
"infrared", so the light shines forward and the heat is refracted(?) out
the back.

On 18/01/2014 19:31, robgraham wrote:

With respect to the lamps in the Amazon link, what does 'dichroic'
mean in describing these bulbs as the meaning I find via google does
not seem to relate; that is very basically dichroic is 2 colours.

A dichroic halogen has a semi opaque reflector that allows a proportion
of the red and infra red pass through it. Thus they project less heat
forwards (and give an attractive pink colour splash out the back of the
bulb)


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

In article ,
Rick Hughes wrote:
I bought some LED's to replace my Halogen spots ...
http://www.ledhut.co.uk/spot-lights/...net-price.html

Although these are classed as ideal Halogen replacements ... I was very
disappointed with light output ...

The rooms had standard 50W halogen bulbs ...which I think are ~600 Lumen


The LED are a very poor light output in comparison .... OK I could get
higher ... but 4W LED are in region of £7.40 you go to 6W and they are
double the price.

Just wanted to let others know the 'hype' that a 4W LED will replace a
50W halogen, may be true for electrical connectivity ... but only 50% of
the light output.

The ones I have are 5w clained 50w replacement. I'd agree in main beam, but
the beam is narrower. I found mine on Amazon about £25 for 10.

--
From KT24

Using a RISC OS computer running v5.18