No one actually knows how to lculate what speaker cable they need

I guess you’re probably right, b4icu. It’s a giant conspiracy. Very carefully choreographed by big money - and it’s worldwide. Especially in the US. You see everything, don’t you? 😬

Mr.  conradnash

What is the difference between T and D class...? D class may have a DF of up to 5,000! Using the same formula, it would suggest a cable with a cross section of an elephant's leg…

I'll rest my case and not dig into those few who wend that way.
Most Japanese receivers have a DF of 40.

As you ignored my need for cable length, I cannot answer that question. The link for the spec does not specify DF.
I'm confused. Are you going to connect this SONY receiver with two 0 AWG wires? Please follow my say over this thread and then reconsider. Thanks

Mr. geoffkait

I'm sick of your nagging. At a time you repeat other's say I have my own thinking. I learned, tested, experience and then talk. Not like you…You bring mostly makers of the audio industry that have an agenda: profit: The more the better.

I'm here with no such intension. If you would read some of the posts, you would understand that I'm truly here to give. Not to take. My only request from the members was to share. I have no idea what they will write, but still I'll keep asking for that. I start to suspect that you are here representing a firm in this industry that may not be happy if this idea catches popularity. It's also a big shame they sold their stuff for long years without having a clue of what their customers need.

The US:

I and my country (Israel) own big to the US. I know some Americans I worked with guys from GD, Boeing, and Lockheed. I found Americans to be very nice and honest people. I'm sorry to say that you are different.

You're right, sorry, I forgot cable length. The length is 2m for that system.

No, I'm not going to connect that receiver with two 0 awg wires, apologies for the confusion.

I have three "systems".
An HT/listening room: classe ct5300 -> 2.5m cable -> B&W 802
A family room TV: Sony DH820 -> 2m cable -> B&W 604
An office system: Class T amp -> 2m cable -> B&W 805

You could say I like the B&W house sound :)

The plan is to use 0 awg in the HT
Prior to that upgrade I'll try bi-wiring with my current 4mm cable. If that makes a significant improvement, and the 0 awg is an improvement over the bi-wire, then I might order more 0 awg and see what bi-wiring does with that. Again, that's all in the HT.

If the bi-wire in the cinema offers no improvement I was thinking about where else I could use that cable. I'm probably getting ahead of myself. I'm sure you're going to tell me not to bother bi-wiring with 0 awg anyway, in which case I'll likely leave it.

Thanks again for all this information and time. My new cable ships tomorrow so I'll tell you how it sounds and give you pictures later this week.

Mr. conradnash

I'll refer, with your kind permission to your HT system only. The rest doesn't worth the effort.

I've told you what cable you need. I took the time and the effort doing so.

If you have other ideas, you are welcome. I won't take the responsibility for that. I do not understand why you would ask for my advice and then do else. Is that sounds right to you?

Well if you go your way, it is your choice. However, it would have nothing to do with my thread. This is not a bi wire thread and I do not wish to keep that subject as topic here.

It may not benefit any of us.