Best speakers for tube amps?

[andyr]

 

On 28/09/2022 at 2:46 PM, stereo coffee said:

Valve amp       power is directly proportional to speaker Impedance
      therefore   power increases as the speaker Impedance rises.
 

Solid-state      power is inversely proportional to speaker Impedance
      therefore   power decreases as the speaker Impedance rises.

 

Are you sure about that, sc?

 

My understanding is that:

• yes, certainly an ss amp's power output is inversely proportional to speaker impedance - so a good ss amp will produce 200w into 4 ohms ... if it puts out 100w into 8 ohms.
• but a tube amp's power output - because of its output transformer ... produces the same power into 4 or 8 ohm loads.  (The O/P transformer simply has different taps to cope with 4 or 8 ohms loads.)

 

@muon*??

 

[xlr8or]

1 hour ago, andyr said:

but a tube amp's power output - because of its output transformer ... produces the same power into 4 or 8 ohm loads.  (The O/P transformer simply has different taps to cope with 4 or 8 ohms loads.)

 

That's correct, Andy. Tube amps have OT's of a certain power output rating. The OT's often have different secondary taps (for example, 4, 8, and/or 16 ohms could be one possible configuration) for hooking up the speakers. This enables the tube amp to produce the same output power into different impedence loads for the speaker.

Edited July 14 by xlr8or