Princeton Tec Quad Review w/ Alkaline & NiMH Runtime Graphs

jar3ds

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Sep 12, 2005
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Well this headlamp has had quite the little adventure.

If you followed the review over at
Quickbeam's Quad Page you'll see that on high and with
alkaline batteries the quad hardly had any
regulation...

The reason was explained on his site by PT...
However, since I loved my EOS so much I wanted to get
another PT headlamp... The Quad would be a nice
companion. After looking at the numbers on Quickbeams
site I noticed that it output number's he had were
differnet than the headlamp output comparsion chart.
After an email to Quickbeam he got it fixed.

I wanted to purchase the headlamp before they changed
the high regulation setting. I wanted to see how the
NiMH performed on it because thats mainly what I use
(with lithiums as backups/cold weather use)... The
overall output numbers currently on the site are
pretty much exactly what my headlamp is putting out
based on comparisions to my U60 HDS, my EOS, and other
flashlights that I have that he has on his site.

So I feel that I am safe in saying that I have the
same model as quickbeam.
To confirm this I did an alk test...



As you can see I got about 17min's of regulation with
the batteries that came with the Quad. Then I got a
very small neg. slope when it switches to direct
drive... Thats better than what Quickbeams results
were and what PT said Alk's should get. Go figure,
plus, the tail of the graph is so much less steep than
Quickbeams... Still, I'm keeping about 75% of total
output for 3 hours... Thats quite exceptable for me
even though I don't use alks.

Below is the NiMH runtime graph:



Not to shabby, even though you don't see a nice flat
regulation, the Quad keeps more than 75% of its output
for 3 hours...

The Quad gives off a very nice flood. The four super
bright LED's give the Quad more throw than what I
would have expected. In the middle of the beam you
can see that there is a slightly brighter horizonal
line (due to the line of the LEDs), so instead of
having a hotspot you have a slight hot'line'.
However, what I am discribing is only at closer ranges
and if you are looking for it. The high settings on
my EOS and my Quad give off about the same overall
light. However with the Quad, the low / medium
settings seem to be brighter than the the equal
settings on the EOS.

The quad's flood creates a nice even blanket of light
and is VERY useful. This headlamp is a fantastic for
a lot of the tasks that you may find with your stock
optic EOS is a little anoying... such as reading
etc... The Quad won't give you tunnel vision.

Even though the low setting on the Quad is higher than
that of the EOS since the Quad is so diffused/flooded
it is soft on night adjusted eyes...

The Quad makes an excellent campers headlamp, nice
constant flood at all levels of light that come
complete in a tough waterproof package. The Quad will
be great in close/medium ranges of any task requiring
lots of flood such as setting up a tent in the dark...

It seems that when the batteries start die about 40% of
its life left it will blink to let you know that changing
batteries will improve performance... However, if the
light is turned off you will notice that the LED will
blink every few seconds. This is a handy feature for
those that leave the headlamp loaded for a long time,
then reach for it in an emergency... They'll have a
general idea of the life of the batteries...

As for Quad vs. EOS.. I think it is a very similar
debate to the Jil Intelli vs. CR2 Ion talk.... Some
people like a little more throw... some like a nice
even flood. Both headlamps will do things the other
can't do. The EOS is thicker and heavier than the
Quad, hence the EOS is slightly more noticeable on
your head than the Quad . I think the EOS could
learn from the Quad when it comes to battery indicator,
the way the gasket seal works, and the thinness/lightness
that the Quad has... Since these headlamps are
some of the cheapest highest quality headlamps on the
market I doubt too many people will be mad to have two
;). I really hope we will see a headlamp by PT that
takes 1 cr2 and 1 rcr2, or 1 123 and rechargeable 123
with a reflector like the IMS 17mm...

I'm sure that if its anything like how the EOS
performed with Lithium e2's the Quad will rule too. I
think the Quad would make excellent use of SilverFox's
lithium ion AAA's mod if you want to see a nicer regulation.

Let me know what you guys think!
 

kbog

Newly Enlightened
Joined
Dec 26, 2005
Messages
76
Nice review jar3ds. Looks like another winner for PT. Now we need a PT EOS and Quad in the same package that is regulated and runs on 3 AAAs!
 

jar3ds

Flashlight Enthusiast
Joined
Sep 12, 2005
Messages
1,988
Location
USA
kbog said:
Nice review jar3ds. Looks like another winner for PT. Now we need a PT EOS and Quad in the same package that is regulated and runs on 3 AAAs!

absolutely! Basicly a PT made SPOT ;)...

also, i don't understand why PT has the first setting the brightest? i like how the riverrock headlamp starts low and works up to not risk loosing night vision... i have to close my eyes and click my eos/quad twice just to get it to the setting that is the dimmest... i hope if PT does make a combo luxeon/5mm LED that make the 5mm VERY dimmable... seems that a lot of headlamps low settings are still so bright...
 

supes

Enlightened
Joined
Jul 22, 2004
Messages
347
Location
GA,USA
Nice review. Thanks for doing this.

I just bought one a couple of weeks ago. It's my first PT headlamp. The LEDs are VERY dimly light when I turn it off. If I'm in a dark room, I can see some light coming out of it. I've tried regular alkaline and NIMH AAA's in this thing. The LEDs are not lit at all when I take out the batteries. Is this normal? Thanks
 
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jar3ds

Flashlight Enthusiast
Joined
Sep 12, 2005
Messages
1,988
Location
USA
i never noticed that.... i'd contact PT... :) however if its a low level setting that would be handy.. .but it sounds like your electronics maybe screwy :(
 
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