I was reading the UFO25TH manual the other day and something stood out to me.

Big Speakers vs. Small speakers...

It is important to understand that while counter intuitive, this small amp likes large speakers. A great example would be a guy who started with a single 8-inch full-range driver on each channel. It’s a nice match, indeed... smallish speaker for a smallish amplifier. However, after being inspired by some large open baffle speakers and a phone call to us, he installed two 15 inch low frequency woofers above and two more below the eight-inch drivers that he had! This pumps the efficiency way up there and puts a scale to the bass not obtainable with a single 8-inch driver.

Now the amplifier has four 15-inch woofers and one 8-inch full-range driver per channel with a simple passive crossover on each speaker. The difference has to be heard to be believed, but since this amplifier will drive loads down to 2 ohms all day long, or as high as 16 ohms, there are lots of possibilities. Just understand that the larger the speaker, the more efficient it tends to be, and the lower the bass response. Hi-Fi speakers with tons of drivers and 84dB sensitivity are not what we’re talking about here. Vintage speakers from the 1950’s which tend to be in the high 90’s and even 100dB 1w/1m are a fun pairing too...




The UFO25 loves these speakers and the speakers love the UFO25.

Light and delicate to rumbling shaking the concrete slab it has it covered.

It honestly took me a long, very long, extremely long time to stop thinking about 2 watts. I would giggle to myself that 2 watts could do what it was doing-it's absurd. I was so wrapped up with the 400+ watt amps for so long it just doesn't seem possible that a small amps with 2 watts can create such a massive sound.

Absolutely stunning room pic—love the lighting and the way the 25th is positioned (and lit up) as if giving life to the entire rig.  I definitely align with the camp of larger, more efficient speakers and using less watts.  There’s magic in that combination.

Damn, that sounds so tempting! I think I need to invest in a pelican case soon.