Originally Posted by dynomike
Hey folks, looking for your opinion;currently running Bryston 6B-SST for front three (Dynaudio 3.4S and SCX center) with plans to upgrade to C4's with the SCX eventually. Along with the speaker upgrade, I was tinking about putting some simaudio amps into the chain to squeeze even more performance out of my dyns, based on others opinions about the synergy of the two companys.
Well the reality is, there is only so much money to do this, so my question to you is in you honest opinion could a titan series simaudio five or seven channel amp handle the load of a pair of dynaudio C4's, a SCX center, and lets say for arguments sake a pair of dynaudio SR surrounds as well or better than a Bryston 6BSSt combined with a Bryston 4BSSt?
Am I giving too much up in dynamics with a simaudio single chassie dual torrodorial transformer design used to run five or seven channels vs the individuall transformer per channel that the Bryson offers. My concern is that even though most here will say that the simaudio is sonically superior coupled to dyns, I am just not sure if a single Titan can replace two Bryston Amps in dynamic driving ability. I am sure the easy anwser would be to be looking at a two chassie simaudio amp set up or moving up to the w amp line of simaudio, but my question is specific to the titan series because that is all that the budget can currenty handle f I wanted to upgrade sooner than later.
This answer comes straight from Costa at Simaudio:
The answer is easy, and one we wrestled with when designing the Titan and Aurora:
When it comes to the choice of one or two mains toroidal transformers vs. one for each channel, it is superior theoretically to have one for each channel. However, realistically, this is far from ideal. Here's why, described in a fictional example:
In a 5 x 100Wrms amplifier, putting 5 x , say, 150VA (volt-amperes, or watts, since P=VA), transformers will NOT give you the dynamics you are thinking you're getting. In a typical HT setup, the channels that work hardest (your fronts, and your center, each have access to 150VA of wattage to draw on, while the other channels may typically never use a significant portion of each of their 150VA capacity. So, the front channels are left "wanting more" in difficult conditions, but CANNOT draw on the channels that have the reserve, because each channel has its own transformer.
Now, 5 such transformers, with a total combined capacity of 5x 150VA, or 750VA (remember they cannot share power with each other), costs MORE than one or two transformers with a total combined capacity of, say 1200VA or more. When you have less transformers, they are shared between channels, so those that need more can draw more than a proportional amount. Do you see what I'm saying? This gives them the extra reserve they need for the additional drive of difficult loads.
I haven't even touched on transformer quality, and the Plitron many others use are much inferior in terms of actual VA they can give (instead of theoretical VA, kind of like Japanese receiver watts vs. North American watts) compared to what they actually deliver under difficult conditions. This spec is rarely if ever given out, because it is almost always poor, and can be described by the regulation factor of the transformer. It is here where Simaudio leaves its mark, with custom in-house designed toroids that deliver their rated VA under hard conditions, with a regulation factor of about 3%, which is quite excellent, and, usually an order of magnitude better than many "higher VA designs".