Listening impression SLS10. I managed to buy two finished DIY bass modules with SLS10 in them at a really good price. First I tried power them with amplifier HK670, but I didn't really think it was enough. HK 670, power: 70 W in 8 Ohm. I thought it was missing something when I played hard bass pumped music. Tried after that to plug in my t-amp (now with silent fans, or as quiet as they get). Now it "breathes" better, at a higher volume.
Since the SLS10 has a power of 140 W, I want to run them with an amp that can drive them to the bottom without the amplifier itself starting to sweat and being driven into clipping.
Conclusion? I think the bass is good, even if you don't get the lowest frequencies. SLS10 , 8 Ohm driver, power 140 W, sensitivity 87.5 dB. See here:
10″ Woofer, 35 Hz, 140 W, 87 dB, 8 Ω
www.loudspeakerdatabase.com
So SLS10 in sealed boxes of 45 litres. You don't get the lowest frequencies. And since they are in sealed boxes not as effective as ported ones. There is, of course, a limit to how much bass pumping they can handle in a normal sized living room with heavy bass pumping music playing. There is a limit to how loud the volume can be, before it starts to distort. You have to be prepared for that if you are going to use/test SLS 10. My tip then, if more bass is desired. Two SLS 10 in each speaker box, connect them in 4 Ohm and increase the sensitivity by 6 dB. 6 dB is a lot! But it is very much a matter of taste. Are you a bass addict or not? That is the question.
I've rigged up mostly to test. Top speakers are JPW Mini Monitors, they stand on empty wooden boxes just so I can get them up to a suitable listening height.
Source Spotify
DAC Topping E30. From it to an active crossover, this:
The LD Systems X223 is a stereo 2 way / mono 3 way crossover in standard 19"/1U rack format. Its rugged construction, high quality and robust knobs as well as the integrated power unit are rarities in this price range. It provides a...
www.adamhall.com
Very reminiscent of this:
This is a review and detailed measurements of the dbx 223xs active analog balanced crossover. It is on kind loan from a member and costs US $245. I must say this is a nice and sturdy package for such a bargain price. Controls feel nice as well. Functionality though is confusing given the...
audiosciencereview.com
Power amp t amp drives SLS10 and Reciver HK330C drives JPW mini monitors. The vintage HK330C receiver doesn't have that much power (measured at 29 W) but since I put the crossover (HP-LP, 24 dB filter) to 120 Hz (I'm testing different levels now) it cope fine to drives a pair of 87 dB sensitive speakers. 330C doesn't have to work with anything below around 120 Hz. The HK330C feels good about it, so to say.
I am attaching some miscellaneous pictures of my test setup.
Of course everything needs to be measured with a measuring microphone and EQ will be needed. But it's not that important with this set up. JPW The mini monitors are just extra test speakers and I will be using four SLS10. I will return.
Edit:
The speakers are a little too far out in the room now, but still. More bass if I push them against the wall.Sound generally way better in that case. But it is fine-tuning that applies then.