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This review is from: Samsung Smart Media Player GX-SM530CF/XAA USB 2.0 Interface
Pros: Small, cool running, saves money over a monthly STB rental fee from the cable co.
Plug 'n play with many cordless keyboards and media center keyboard emulation type controllers (most of them). Plays files over network with wifi, ethernet via DLNA, or from a USB connected hard drive, flash drive, etc. Two USB ports, just enough for external storage and a wireless keyboard. Brushed, anodized metal case looks nicer than plastic. It matches a glossy framed TV nicely.
Cons: Cable company took 3 tries before they synced it correctly - not a fault of the product but there were no other cons in my use.
However there are detractions I don't care about. It's not a DVR, can't record. Can't do pay per view from the box - have to call in it get an event.
It would have been nice if it had a standard LED setup where there were none on when it's turned off and one on when it's powered instead of switching from one lit LED to a different one when on, but you get used to that eventually. The remote looks a little too much like the one for our samsung tv so they get confused occasionally, but it has no problem operating the features for both that we regularly use.
Other Thoughts: It does what I expected. The youtube app is a little clunky but I do youtube at a computer or tablet and tv shows on tv so basically I just wanted a cheaper alternative to a cable co. rented box that also had smart features and wifi.
HDMI so you don't even need a "real" TV, could plug this into a computer monitor or whatever display with an HDMI port.
I subtracted one egg because it can't record to external storage and it's not running open source (moddable) firmware. I think it would have a larger following if it did.
This review is from: 27 Watt 12V 60 Degrees Square LED Flood Light, White
Pros: Durable weatherproof housing, thick wire, good amount of light for the money, wide voltage input range of 10V to 30V & current regulated drive circuit.
Not a polycarbonate lens so hopefully it won't yellow over time, though more subject to stress fracture than if it were polycarbonate.
Cons: Not Cree LEDs, they are Epistar brand with lower efficiency. Lumen rating is false as is wattage rating. They are closer to 1500 lumens and 23W.
Polarity protection - might seem nice to someone who doesn't know how to wire a light but it is a voltage loss to implement it, resulting in lower efficiency.
Very highly diffused broad beam. They do call it a flood but it floods a little too much even for very close up distances.
The mount for it is not very vibration resistant. Even tightening it a lot, I would still recommend coating not only the screw threads where the nuts go with threadlock compound but also putting some between the mount plate and where it contacts the body of the light.
Other Thoughts: I can't complain about the product performance for the price but it never should have been listed as "Cree type LED chipsets" because there's nothing in particular that makes them more like Cree's LEDs than any other brand.
The Epistar LEDs are good for about 67 lumens per watt per Epistar's datasheet and a measure of input current means the input to the light is 23W, then subtract regulation losses.
These are arranged as a buck PWM driver circuit which seems to be driving 3 parallel series of 3 LEDs in each series. If one LED or series fails you are probably going to loose all 3 in that series.
It was misleading to put 9 pieces of LEDs that "could" work up to 3W power level but don't in this product, then claim something the product does not live up to. I cannot fault this seller in particular as all of them seem ignorant of the situation that wattage is a scientific quantity not what some internal component could do in a different situation. The way they did it they could have used 10W LEDs, claimed it was then 90W, but using the same driver circuit it would have been no brighter at all. This is not all bad, the enclosure limits the heatsinking amount and it would be larger, heavier, and more costly with diminishing return in lumens to increase wattage much more.
Despite the cons the bottom line is that being a finished ready to install product suitable for outdoor use, it is a good value. I see it as the best option for the price, not the best option at twice the price which is what some alternative lighting pitched for the same uses sell for.
This review is from: Rosewill RLFL-11004 1W 70 Lumens LED Head Lamp
Pros: - Low cost
- Lightweight and compact head
- Very good runtime
- Momentary type power switch latches circuit, longer lasting than mechanical on/off type switches found in most inexpensive headlamps
Cons: - Misleading, not a 1W LED and not 70 lumens. This uses a Chinese manufactured Pirana 0.5W Super Flux LED rated somewhere between 25 and 35 lumens.
This is very easy to prove, based on comparison beams, the physical appearance of the LED as pictured or looking at the light, internet pictures and datasheets, lack of a heatsink base, and by the power consumption measured with a multimeter.
- Flimsy swivel
- Thin, short elastic
- Thin, fragile wire
Other Thoughts: Cool white, roughly 6500K) tint.
It's bright for a 0.5W LED, and frankly it might be the right choice if you need longer runtime from a 3 x AAA powered light, several hours instead of only a couple on many headlamps running on high, except that many others have a medium to low mode that would accomplish the same.
Otherwise, just about any other headlamp made today that uses a single power LED and this volume/weight of batteries is brighter.
It has a broad, fairly even beam without much of a hotspot, suitable for short distances, indoor use for example not outdoor navigation. I'll probably use when working under my car.
It's no more or less water resistant than another other headlamp that's not waterproof. In other words if it gets wet you may have a problem, but there are no bright, waterproof headlamps at this price point.