- 46 posts total
- 46 posts total
I listen to music using Magnepan 20.1s, which are a 4 ohm and 85 db sensitivity speaker. Yes, they require some power to drive, especially if you don't want your amp to overheat. But you don't have to pay a fortune for an amp that can drive them. Emotiva has the A-300 amp for $400 right now and it has 150 wpc at 8 ohms and 300 wpc at 4 ohms. The 300 wpc is enough to make the Maggies sing.
What it comes down to is... really good mids with any type of top end extension without cone break up is hard to find in true high sensitivity speakers.The Classic Audio Loudspeakers use a beryllium diaphragm with Kapton surround in their compression drivers; the first breakup is at 35KHz. The model T3 which I have at home is 97dB and 16 ohms, flat to 20Hz owing to dual TAD 15" woofers.
All transistor amplifiers (except class A) have thermal distortions (similar to low sensitivity box speakers). The transistors parameters change with changing of temperature.
This distortions have inertia. As result you can't fix these distortions by feedback.
Our brain is very sensitive to these kind of distortions. These distortions cause tiresome and decrease enjoyment from listening music.
So, if you use combination of low sensitive sensitivity box speakers with powerful transistor amplifiers you get thermal distortions in a square.
As a result, you have a tiring, depressed, suffocating, annoying sound.
I think this combination is the worst delusion of audio industry.
Sadly, most of audiophiles don't understand it.
@hilde45 .. I should have been more specific. I have a pair of Mark & Daniel Ruby speakers which the manufacturer specs at 82.5 - rather inefficient. The Rubys are a small monitor (2-way design with an AMT tweeter) which puts out a tremendous amount of bass - love them. I’ve run these with numerous amps including a 100 wpc class d and a 110 wpc class a/b. Both amps could drive them to ear-bleeding levels in my room but for late night and early morning listening the drivers simply needed to be played louder than wanted to come alive. I had the same experience with other inefficient speakers as well. Perhaps spending more cash on a bigger/badder (at least 200 wpc) amp would have worked but, ultimately, I chose a different path.