Assuming the emails are complete and unedited it doesn't seem like good communication or timely service on the builder's part. You can knock the OP for not knowing everything but he's asking a trustworthy expert so what's wrong with that?
Knowing the user might add a second cab, that the amp is 4 ohm min and, as has been noted in this thread, has plenty of power at 8 ohms I see no reason to recommend a 4 ohm cab in the first place. If that is the recommendation, it should be clear what the final load of the combined cabs will be and that the amps full 1000 watts won't be available. Note the use of the word "converter", not serial. Why not be clear?11/20/17 Jorg ~
I would definitely go with the 8/15
and I would recommend a 4 ohm cabinet especially if you don't push it to hard, even though the B&Cs can handle some serious juice if necessary
11/20/17 Scott ~
I was thinking 8 ohms, in case I, at some point, wanted to add a second 15/8 cab... But, if you feel that the 4ohm design is the way to go, I trust your judgement. Let's do it!
11/20/17 Jorg ~
I would recommend a 4 ohm cabinet; and if you decide to order a 2nd unit my engineer came up with a converter box
where you can connect two 4 ohm cabinets to a 4 ohm amp; that box has been tested live for months and it works flawless
11/20/17 Scott ~
Okay. I'll follow your recommendation.
11/20/17 Jorg ~
sounds good, talk soon
Again, "converter" not serial. No explanation of combined impedance and amp power reduction.2/12/18 Scott~
I don't think I would ever utilize the 2x10, on it's own... Always with the 15. I would need some way to run both cabs, with the 15 being a 4 ohm cabinet. Amp maxes out at 4ohms. Could you give me a ballpark price?
2/12/18 Jorg ~
my engineer designed a converter box where you can run two 4 ohm cabinets with your amp;
it's been diligently road tested and works flawless; if you are interested I offer you the 1000 watts 1210 for $750.00 shipped and include the box free of charge
Box doesn't arrive with cab making second cab temporarily useless.3/2/18, 12/10 delivered
3/11/18 Scott ~
Hi Jorg! So, I don't think I'm seeing the box, to run both cabs at the same time..?
3/13/18 Jorg ~
Hi Scott; I went to the Post office and they informed me that the box is on the way, even though it's been taking quite a bit longer than anticipated; if it doesn't arrive by tomorrow or Thursday I'll send you another one please let me know
OP specifically asks if it will be a 4 ohm total load. Builder says yes but appears to be answering a different question, that of whether it is safe or not. Again, no clear explanation of what the box does and how it will affect combined impedance and amp power.3/25/18 Scott ~
Hi Jorg, so, just to clarify; this box will enable me to run two four ohm cabs, at a 4ohm total load? Rather than 2 ohms? Just making sure, before I blow poopie up lol
3/25/18 Jorg ~
Yes, you can connect two 4 ohm cabs with it
At some point here, the box finally arrives.
Over a month between these.4/11/18 Scott ~
Hmmm. Seems that one of the connections on the box won't take a cable. The other side seems to work just fine. I have lots of speakon cords. That's what I'm saying, one of the plugs isn't taking the speakon cord. Two seem fine, but one is blocked. Internally?
4/11/18 Jorg ~
let me talk to my guy and see if he can send me quick another box
5/24/18 Scott
Hi Jorg! Hey, still waiting to figure out how I can get a working box? We determined that one jack will receive the cable, and the other will not.
Still waiting a week later.5/24/18 Jorg
Hi Jack
sorry for the delay, my engineer was a bit overwhelmed
I should have some new ones next week
Thanks
5/31/18 Scott
Hi Jorg... any word on this box, as yet. I've been waiting for a working box, for a very long time. The cabinets are totally useless in tandem, without a working box. Perhaps the engineer wants to speak w/me directly, to make sure I'm utilizing the box I have correctly? Should simply accept a speakon cable?
5/31/18 Jorg
Hi Scott. I should receive some boxes today or tomorrow, and will send one out right away
Thanks
Just leaves him hanging. Why not recommend another serial box from a different supplier at this point?6/22/18 Scott ~
Hi Jorg. Seeing that I have been unable to get a functional box, I'm going to list these cabinets for sale. If you wouldn't mind, please send me a functional box for the buyer. I will pay for it, if necessary. Please.
6/22/18 Jorg
Scott
My engineer had surgery and is in the hospital. Therefore the delay. Things can happen. Thank you