2. amps-preamps
  3. 150286-53619

Again the topic of weight of amps

I see this has been covered but not recently.
I have had a few amps in the 100+ pound range.
I liked them enormously but I am in a small space and am tired of dealing with these behemoths when I need to move them around and the real estate they take up. They were all wonderful in their way and I would like to have kept them but for their immobility. But can one find true love after such heavy weights with a feather weight 55 pounder?
Have technological advances in 2019 made such a thing possible? I had a pass 350.8 which I loved but you can't keep a Stonehenge rock in an apartment living room.

roxy1927
geoffkait's avatar
geoffkait
23,365 posts
 
mitch2
@geoffkait
It’s no secret that big honking transformers produce toxic magnetic fields that distort the sound and that transformers produce mechanical vibration that affects everything in the chassis, especially given that transformers are bolted down to the chassis.
I believe I have heard of amplifiers that have a separate case for the transformer but I cannot think of a specific example right now.

>>>>Michael Green says he removes the transformer and places it far away from the amplifier, connecting them with long wires. An enclosure for the transformer would be fine as long as the enclosure was a low frequency high permeability alloy. I.e., mu metal. Two enclosures would be even better. 🤗
noble100's avatar
noble100
2,419 posts
 
bdp24:
"Tim deParavicini of EAR-Yoshino says he can predict the bass sound an amplifier produces by looking at the size of it’s transformers."

Good morning,
    If Tim deParavicini of EAR-Yoshino is as smart and knowledgeable as I think he is and heard a good class D amp in the last 5 years, I doubt he still believes or states that.  I believe that's an old quote he made back in the 1990s referring to conventional tube and solid state amps at that time, not more recent class D amps.

Tim



geoffkait's avatar
geoffkait
23,365 posts
 
I have great bass - slam, articulation and plumpness, the whole nine yards, and am using a Sony Walkman CD player. Consequently I don’t buy into the theory that the transformer has to be large. 
atmasphere's avatar
atmasphere
12,169 posts
 
On account of the fact that our amps don't have output transformers, they tend to be lighter than other tube amps that make the same power. For example our 140 watt amp weighs 36 pounds.
It’s no secret that big honking transformers produce toxic magnetic fields that distort the sound and that transformers produce mechanical vibration that affects everything in the chassis, especially given that transformers are bolted down to the chassis.
If they do the transformer was poorly spec'ed!
geoffkait's avatar
geoffkait
23,365 posts
 
Nope, they all do. That’s why it’s important to wrap the transformers in mu metal. Of course you can ignore or dismiss the whole issue. I really don’t care. Even toroidal transformers that supposedly don’t emit magnetic fields do, in fact, leak. Been there, done that.
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