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...why did they move away from the good stuff... The AKG tube mics from the 40's and 50's have better SQ than any mics made today.
Been listening to the LSR305p Mk II for an hour so far. I tell you, nothing prepares you for the stellar fidelity these budget speakers produce! On my reference tracks it can be stunning, easily outperforming high-end speakers. I will do a review in a day or two when I have more miles on them. For now, I have to keep shaking my head on the level of detail, and absence of distortion. Level wise, I am listening at -22 to 0-15 db or so. Plenty of reserve power. I can't get them distorted before I get uncomfortable with the loudness!The only downfall is that it absolutely will not play deep bass. It acts as if it is not even there. I think they may have smartly filtered that out. I will do some measurements to figure out. I should say though I have them out in open room in a very large space. Against the walls it may do better.Mind you as soon as bass frequencies go up some, it reproduces them with incredible clarity. So it is not like a little whiny bookshelf speaker.Absolutely, absolutely, incredible value and performance here! I don't care what system you have now. You need to get a pair of these and listen to them.I am driving them with the Topping DX7 which makes a fantastic package with them. I hooked up a sub to the unbalanced output and let the balanced drive the LSRs. That gave me the lows but measurements and tuning is necessary for best performance there. Hard to imagine that this is a $600 package from DAC to amp and speakers!
They do unfortunately. It is a hiss that is audible to about 3-4 feet on-axis. If you go at just about any angle, it goes away very quickly.
Unfortunately no. I just checked and the noise is there unless the volume control is set at absolute zero. After the first notch the hiss comes and it's level does not change with volume.
An internal cross-brace made -25dB reduction in resonant sound, measured with backplate opened and knockin the side panel. Distortion peak measured at 60m (2') was reduced too. Me happy for solid 1 hour "work" on these. I hope that my daughter willl be happy too for her new desktop speakers!
So these cheap boxes suffer from various rattles and resonances in the cabinet, plastic front plate, metallic back-plate and wires wibrating etc. The loudest noise came from the box panels ringing like a bell with signal of 240Hz and around. 2nd harmonic means buzzing at 480Hz, 3rd ringing at 960Hz etc.Resonances from cabinet walls and other mechanical parts are usually easy to fix. But if I wanted to make these hi-fi, I would construct new heavy cabinets, fill the backside of plastic front plate with something heavy and puttery and place the amplifier board outside the cabinet or in an isolated chamber. I am sure that the wise engineers at JBL know this too, bet they had to fit a certain retail price and still make profit with manufacturing! Nothing wrong with that!
Before it was the hiss and now the resonances, they are different problems.We are talking about hardware, it is not personal.
This file will make LSR305 transient perfect when playing from Foobar.Download "convolver" for Foobar and put this file "FIR.wav" to it.After that 305's will play meander and will have ideal Step response when playing from Foobar.
http://www.diyaudio.com/forums/multi-way/320206-jbl-lsr305-tweaking-post5375313.htmlFocal Alpha 50, 65 or 80 are much better options without any doubt. They are more expensive but they do not have those defects. To listen very good recordings. And without cheap class D amplifiers.
The problem is the same: cheap class D amp.
Sure, it's not perfect, but for the price sound good to me.
It was a bit disappointing considering all the rave 5 star reviews I read prior to buying them. Also, the published response was flat - not waivering like this.Anyhow, even at $210/pair I did not think they were worth it. The mid bass was lacking presence and sound was just not clean enough I ended up returning them. The value would have been incredible had they sounded good. But IMO, a well designed passive 2-way with a solid cabinet and decent but budget drivers sound better.Certainly, the GR Research XL’s are superior in flatness of response and distortion. Just missing the waveguide.
