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Profoto Pro 6 vs 7

Jonathon Wilson - Sydney Australia , Mar 05, 2005; 12:11 a.m.

I've been reading the PDFs of the manuals for the Pro 6 and 7 asymmetric packs and they differ slightly. The Pro 7 manual says that if you have a head plugged into each of the three ports and (for example) you set the A dial to 1/4 and the B dial to 1/8, you get 1/4 total output from A head and 1/16th each from the two B heads.
The Pro 6 manual says that for the same dial setup, you get 1/4 on A, but 1/8 on each of the Bs. Which is correct or do the packs actually operate differently?
The reason I ask is because it affects the minimum ws output for a head and I often need to operate at the lowest level (in which case I'd consider the 1200ws pack). Also when I rented an Acute 24, there was a mistake in the power output calcs in the manual for that pack, so I don't trust Profoto manuals 100%. Thanks!

Responses

Jonathon Wilson - Sydney Australia , Mar 05, 2005; 02:35 a.m.

...also if you connect a single head to B1 socket only, will the pack fire? (the manual says if using one head, connect it to socket A, but socket B can go a stop lower to 1/16th).

Alan Housel , Mar 18, 2005; 04:06 p.m.

I hope this helps, on my Pro 6 freeze: On full power the B1 channel is 1 stop less powerful than the A1 channel. So when you have three heads plugged in you have A1 (@1/2)= 600ws B1&B2 (@ 1/4 split=1/8th each) or split 300 ws to (150ws each). The master variator takes it all down in 1/6th of a stop increments. It is confusing. You can use one head in A1 or B1, at the lowest power setting B1 is 1 stop less powerful than A1. If you have two heads in the B1 & B2 channel the power is divided between them. I haven't noticed any problems running one head in just the B1 channel. The pack beeps at you if you have a head in the A1 and B1 and turn the power up into the A1 only or B1 only range. It must divert power to one side or the other when you want to maximize the output into one channel. The only other quirkie thing about them is that they run a little power to the modeling light even when powered off so it doesn't shock it in cold weather. Great strobes - much better stopping power than my Elinchrom, Hensel, and Normans.

Josh Letchworth , Mar 28, 2005; 12:16 a.m.

Just wanted to jump in on this because i am in the middle of making of a purchase of either a Pro 6 2400 freeze or a Pro 7a 2400. Both of htem are used and appear to be in great shape. i've done some research, but wanted to find out from anyone with experience owning these packs what may be different. I can pick up the Pro 6 with a head less than i can get the Pro 7a. I just want to make sure that i am happy with my purchase and not wish that i had stepped up to a newer model (Pro 7a). Its seems as though the functions are pretty much the same. Can you use all the Pro 7 light accesories (heads etc) on the Pro 6 pack? any help/advice/insight would be greatly appreciated.

thanks, josh

Dawn Giarrizzo , Aug 14, 2007; 04:54 p.m.

I am just purchasing a refurbished profoto pro6 kit. I'm very familiar with the 7A's, are they similar? anything i should look out for? Will the heads from this kit work with the 7a's if I upgrade? any advice is welcome! Thanks-Dawn

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