Jeg ville gå efter en brugt 16k i stedet for den nye 15k. Jeg skal se om jeg kan finde et link, men et par af lys guruerne på nano-reef har skrevet nogle fine indlæg omkring de nye lamper og maxspects valg af dioder. På trods af de ekstra 20w, så skulle den give et ringere spektrum af brugbart lys, samt et mindre lysudbytte, netop pga. deres valg af mindre effektive dioder, bl.a. dioder der er baseret på forældet teknologi.
Det er selvfølgelig nok kun hvis man går i petitesser, lampen skal skam nok kunne give lys til at holde koraller. Men det er værd at have i tankerne.
EDIT, fandt den ene tråd:
http://www.nano-reef.com/topic/315634-m ... ad/page-26
Her står de første indledende tanker fra jedimasterben (han arbejder med lys til hverdag og bygger selv LED).
The changes to the R420R line has been confirmed by CoralVue. This is the data that I have.
Old models:
~60w per LED pad
CH A
2x Cree XT-E warm white @ 1.3A
2x Cree XT-E royal blue @ 1.3A
2x Cree XT-E cool white @ 1.3A
(~29w power)
CH B
4x Cree XT-E royal blue @ 1.3A
3x Cree XP-E blue @ 860mA
2x SemiLEDs 'dual core' 410nm & 420nm @ 1.3A
(~35w power)
New models:
~65-70w per LED pad
CH A
2x Cree XT-E cool white
2x Cree XB-D neutral white
2x Cree XB-D warm white
2x Cree XB-D royal blue
2x Cree XB-D blue
(~33w power)
CH B
1x SemiLEDs 400-410nm
1x SemiLEDs 410-420nm
1x SemiLEDs 420-430nm
2x SemiLEDs royal blue
2x Cree XT-E royal blue
2x SemiLEDs blue
(~29w power)
The four colors of XB-D will be in one 'spot', as they are very tiny LED packages, so they will blend better. The issue is they have piss-poor output, they are comparable to the Cree XP-E line, which are several years old as it is. The violet LEDs are no longer EpiLEDs, the SemiLEDs chips they are now using will have much more output.
Why on earth they decided to use three different royal blue and two different blue is beyond me, especially choosing 2/3 and 1/2 to be much lower in output in comparison to what they could should have chosen. The Cree XB-D also have lower thermal and current tolerances, so I expect them to be driven at a lower current, reducing output more. Overall, there will probably be about the same amount of violet light, the same royal blue, less blue, and the same amount of white. I will be able to verify these assumptions if I can get the current levels for the LEDs on the new models.
No, they are still Cree in origin, but individually the XB-D LEDs are 1/4 the size but also have significantly reduced output compared to the XT-E, but power consumption is still the same per diode.
det er jo en dyr investering 
))
