It is arriving tomorrow. So should be able to report on then soon after.
That will be interesting, good benchmark for whatever amp and speakers you buy to test.
There are measurements of the old ones here http://noaudiophile.com/JBL_LSR305/
I see that polar plot is for the 308. Is the 305 better as one would think? The crossover is actually lower in frequency on the 305 and it will be handing off to the 5 inch driver.
Thanks for the plots btw. Measurement data is held in much higher regard on this forum.
I would rather say the speaker is loosing it's directivty from around 1200 Hz and becomes gradually wider. And above 2 KHz is becomes gradually wider to a certain point. It's only constant between 1200 Hz and 2 KHz.Seems like the woofer is progressively beaming, and then the tweeter/waveguide takes over and the dispersion becomes a bit wider again? Is my interpretation correct?
I would rather say the speaker is loosing it's directivty from around 1200 Hz and becomes gradually wider. And above 2 KHz is becomes gradually wider to a certain point. It's only constant between 1200 Hz and 2 KHz.
The data from the german magazine looks better than what it really is because of the small resolution or large increments on the y-axis. Geddes' graph is displaying it much better.
Sure. Like I pointed out earlier, everything is relative and compared to many commercial speakers these measure quite well. For the price, they are great. The fact that are active is also a an advantage.You're demanding in your approach to loudspeakers, Bjorn
I see your point. But even if it's not "constant", we can surely speak of better or worse directivities? So that some speakers are more constant than others, even if they are far from being fully constant?
And would you agree that the 305 seems to better controlled directivity-wise than the 308?
Sure. Like I pointed out earlier, everything is relative and compared to many commercial speakers these measure quite well. For the price, they are great. The fact that are active is also a an advantage.
The 305s don't exhibit so much narrowing around the crossover as the 308s do. At the same time, the 308s remain the directivity lower in frequency. So weaknesses and strengths with both. The lobing and comb filtering will be more pronounced with 308 but difficult to say how audible this is. It's really an audible problem with both speakers. The directivity graphs only give us a small picture.
Maybe. Difficult to say before doing a serious listening test. Personally I don't like small woofers though for any critical listening. They sound compressed, which becomes very obvious when comparing them to something larger and a sub crossed over low doesn't solve it well. For a computer speaker it's ok though. I have a pair of Behringer Truth monitors myself as computer speakers. The smaller version of the ones that beat Linkwitz Orion in a blind test.Thanks. Good points. I would hazard a guess that the 308s might be better for near-field listening, contrary to what could be assumed perhaps, and the 305s (with a sub) better for mid-field or far-field listening? In the near-field the direct sound will dominate, and the narrowing around the crossover of the 308s might be less perceived. And the direct sound of the larger woofers will have more dynamics and punch. But farther away, the more uneven dispersion in the presence region compared to the 305s might create an ambient field that is perceived as less homogenous.
Would be interesting to A/B-test this!
Maybe. Difficult to say before doing a serious listening test. Personally I don't like small woofers though for any critical listening. They sound compressed, which becomes very obvious when comparing them to something larger and a sub crossed over low doesn't solve it well. For a computer speaker it's ok though. I have a pair of Behringer Truth monitors myself as computer speakers. The smaller version of the ones that beat Linkwitz Orion in a blind test.
http://www.diyaudio.com/forums/multi-way/177403-linkwitz-orions-beaten-behringer.html
It's actually quite easy to build a cheap speaker with far more constant directivity in the most sensitive area than the JBL 3 series. But manufacturing at a similar low price tag would take a lot of investments and involve high risk.
Maybe. Difficult to say before doing a serious listening test. Personally I don't like small woofers though for any critical listening. They sound compressed, which becomes very obvious when comparing them to something larger and a sub crossed over low doesn't solve it well.
The only downfall is that it absolutely will not play deep bass.
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!
What's the source of the hiss?