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JBL LSR305 (1st gen) quasi-anechoic measurements

Acerun

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Is there a difference between the LSR 305p and the LSR 305p MKII?
 

sweetchaos

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Here you go:
both.gif
 

Acerun

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Thanks. I'm not great at reading these. Do I see smoother and less mid drop on the 305p but a trough at 15k? How would you interpret if you wouldn't mind?

Edit: ok, I see this now. "There is some similarity, though it looks like the newer model might be brighter (but it also has a less pronounced 12k dip and slightly better DI)."
 
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sweetchaos

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Bass extension is the same. Obviously, since it's the same enclosure and woofer size.
The preference score is higher for MKI, due to A) smoothing of the data, since it's just quasi-anechoic response B) the high frequency is more neutral for MKI, where MKII is brighter above 3khz.
The 12khz dip of the MKI was improved on MKII...don't know how much of that is audible.
Early Reflections DI and Sound Power DI look the same.
Power handling should be the same if same enclosure and amplifier.
I think the biggest difference that you'll hear will be the brightness (above 3khz) of MKII, that MKI doesnt have.

I have MKII and I set the dip switch "HF" high frequency to be -2db to bring it back to neutral if I have them playing with a TV.
Otherwise, with a computer, I use PEQ profile to make them more neutral.
 

Acerun

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Bass extension is the same. Obviously, since it's the same enclosure and woofer size.
The preference score is higher for MKI, due to A) smoothing of the data, since it's just quasi-anechoic response B) the high frequency is more neutral for MKI, where MKII is brighter above 3khz.
The 12khz dip of the MKI was improved on MKII...don't know how much of that is audible.
Early Reflections DI and Sound Power DI look the same.
Power handling should be the same if same enclosure and amplifier.
I think the biggest difference that you'll hear will be the brightness (above 3khz) of MKII, that MKI doesnt have.

I have MKII and I set the dip switch "HF" high frequency to be -2db to bring it back to neutral if I have them playing with a TV.
Otherwise, with a computer, I use PEQ profile to make them more neutral.
Thank you. I have an opportunity to buy either one at a good price, so trying to decide which way to go.
 
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dominikz

dominikz

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Thank you. I have an opportunity to buy either one at a good price, so trying to decide which way to go.
If you use EQ both look like they can be corrected to a pretty similar overall response (link to comparison tool):
1638582140279.png

Personally I'd probably go with whichever was cheaper or looks nicer to me (I prefer the look of MK1).
Good luck with your choice! :)
 

Acerun

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If you use EQ both look like they can be corrected to a pretty similar overall response (link to comparison tool):
View attachment 169998
Personally I'd probably go with whichever was cheaper or looks nicer to me (I prefer the look of MK1).
Good luck with your choice! :)
I appreciate your response, I got a pair of MK1 for $189 so I think I should be good. :)
 

Acerun

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Okay thanks! This is the one that I am using, was just curious if there were other tweaks or if I should be happy with this. I'm also playing around a little bit.
 
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