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Pump question: DD-D4 vs DD-D5

post #1 of 5
Thread Starter 
Is there a big difference between the two? I know the DD-D4 can be had for cheaper, but does that mean a 5C difference in temps?
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post #2 of 5
Quote:
Originally Posted by Muftobration
Is there a big difference between the two? I know the DD-D4 can be had for cheaper, but does that mean a 5C difference in temps?
I would go with the Laing D-5 if your are buying a new one...Dont know if it has that much temp. difference or not...It's the newest incarnation of the D-Series.. And the D-5 is one of the best general purpose pumps you can get...

I tried to find links of D-4 vs D-5 and couldn't find any...

I like the 18W Laing DDC's with aftermarket tops...They out-flow the D-5 in actual loops, but they cost more to by the time you count the price of a new top....
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post #3 of 5
I actually own both the D4 and the D5. They are both very good pumps, first of all. As for the comparisons:

DD-D4 has slightly less (but comparable) flow
DD-D4 is noisy, it emits a high pitched whine, which I found annoying enough to replace it. It was loud enough so that I couldn't sleep with it on at night.

DD-D5 has a built in potentiometer, which will increase or decrease flow.
DD-D5 costs a bit more than the D4

The D5 has a lot of pros, it can speed up or slow down with the potentiometer, has slightly improved flow rate, and is much, much quieter. I can now leave my rig on 24/7 and not want to puncture my eardrums. I highly recommend going with the D5.
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post #4 of 5
Thread Starter 
Okay, thanks. I'll be getting the D5 then.
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post #5 of 5
also I think the D5's are pretty quiet. I cant here mine and its at max flow..
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