Why Avr so bad for music?

[doors666]

Yes, power conditioning is important in India. A subwoofer sounds awful, loose and powerless, when plugged into a connector supplying 180 volts instead of 230. This is quiet obvious as this ac with lead to a lower dc after rectification and filtering in a non regulated supply present in most amplifiers leading to a decrease in wattage / punch.

Secondly, loose connections lead to sparking which can be both dangerous and audible.

Thirdly, one needs surge protection, lightening as well as over voltage protection for their costly equipment.

Actually, voltage stabilizers and surge protectors are not power conditioners. There is a separate item which is supposed to clean power. They sell it in countries where power is already stable and clean and the mysterious properties of these items are supposed to make sound much better. And these are expensive items and are considered snake oil by many people. Logic being that once ac is converted to dc, it doesnt matter.

 

[rishiguru]

Few posts back in this very thread, coreElement posted this beautiful Class-A pre/ power amps using vacuum tubes as seen. They truly look gorgeous.

But I cannot understand why the vaccum tubes are exposed. After all they emit tremendous amount of heat and any good designer (I believe) should enclose such a device inside the cabinet with proper ventilation. Am I missing something?

I remember my grandfather used to have Murphy radio using valves, designed some sixty years back, but the radio came with the valves enclosed inside the cabinet.

Are there any technical advantages in keeping the valves exposed? I have no knowledge regarding tube amps (I just heard one for half hour) so it will great if someone helps me out on this?

Thanks in advance.

 

[corElement]

The tubes are exposed to passively dissipate heat. In the past tubes were enclosed. I remember stories of systems catching fire or burning out/shorting out from my parents, back in the 60's when everything used to be inside boxes instead of outside. In an absolute purist high wattage class A amplfier tube or no tube, you'll almost burn your fingers touching the power/volume controls.

 

[neutral]

The Musical Fidelity A5 is the benchmark :sad:

Musical fidelity brings back memories of worry and disquiet. They have created some sporadic classic pieces though.

I guess it brings into perspective how different each of these camps are !

 

[kaushik]

tubes exposed because we like exposed item numbers..
after all no one likes amp to look like old vacuum radio ,unless it is a guitar amp


i am so sick of avr sound,need to buy TRipath chip from a genuine source
arjen sales in pairs sad..will mail to send 1pc at 7$.

bit lazy to do replacement as there i m planning a vacation :indifferent14:

 

[ynotbubba]

The tubes are exposed to passively dissipate heat. In the past tubes were enclosed. I remember stories of systems catching fire or burning out/shorting out from my parents, back in the 60's when everything used to be inside boxes instead of outside. In an absolute purist high wattage class A amplfier tube or no tube, you'll almost burn your fingers touching the power/volume controls.