|Iwang, maybe you are misunstanding me or I you, but I am only trying to inquire more info on this amp and his new upcoming products if any.
We must have misunderstood each other, but you sounded like you wanted Hsu to provide that information on their website.
You can try to get that info from people on the web who might know something about it (like the VTF-4(I don't know anything about it))
|TN series still has the driver up top.
I don't mond them up top, but it would be better if they had protection/grill for the speaker.
Hsu was going to make a adaptor plate for the TN amp which goes between the dirver and tube, where it would have feet coming out of plate so as to allow for the driver to reside at the bottom. Instead of coming out with it for his current sub, he has other plans. I guess getting such a low production run might not be beneficial cost wise.
What would be interesting is a stand for subs laid out on the side, where one sub could be on top of each other. End result would still be something 2ft high and easily disappears behind shelves/rack/sofa.
SO what do you want to know about the amp?
What does a sub amp look like in the back? Line in/Line out. Main Speaker in/Speaker/out. Subwoofer speaker out. This one has a switch for crossover out and polarity switch and access panel for crossove rmodule change
Internals of the current amp:
500w mono amp, 800w or so when 2 subs are paralleled. Amp circuit designed by people at Crown. Class AB with a +/-70v rail. Soft clipping and different EQ setting for different sub (1220/1225). 6 output transsitors, 27,000 uF power supply capacitance. Metal film resistors and polycarbonate capacitors throughout the amp.
Crossover section: Seperate L & R high pass crossover, single summed low pass crossover. All crossover utilize Class-A circuitry, discrete crossover freq by plug-in resistor modules utilizing Sallen-Key topology in a cascading 12dB/oct layout to for a 24dB L-R crossover. State Variable crossover is not used due to it not being able to offer different HP/LP crossover freq. Infinitely variable crossover freq not utilized due to its bad sounding characteristics, especially in the high pass section.
|BTW, it's good business practice to announce (hype) new upcoming products. Hype/advertising sells!
I guess some people are more dedicated designers and others are more businessmen. Bose belongs in one group and Nelson Pass belongs in another. You go figure out where the other companies fits in.