My problem with the apron around the baffle method is that it does not include the baffle diffraction in the measurement. I like to know how that is affecting the measurement.
Type: Posts; User: Steve C 2020; Keyword(s):
My problem with the apron around the baffle method is that it does not include the baffle diffraction in the measurement. I like to know how that is affecting the measurement.
Yes correct. Thank you !!! Is that graph 5 or 10db per division? It is a little hard to read
Thanks for that information. My ground plane measurements are typically conducted outdoors not in close proximity to objects.
I apologize for the late reply and thanks to all for this information. I don't have a copy of Eargle's loudspeaker handbook. Do you have an easy way to share that graph as an attachment? Thanks !!!
Yes that is true. The size and shape of the front baffle of the speaker affects the frequency response of the speaker. I believe that is referred to as BD (baffle diffraction). Keep in mind that...
I was looking for a study showing the difference between ground plane measurement and (VS) anechoic measurement but I was not able to find anything. Obviously I know that the GP measurement will...
Thank you. It was difficult for me to find a picture of it on the net.
I have this drivers in my speakers JBL 2254j/2251j/2435hpl and 045Be
This is hornloded speakers with this crossover point 300Hz/700Hz/10kHz
regards
Ari[/QUOTE]
Hi Ari,
Can you please...
That makes sense
That is interesting. The 67000 does have a higher sensitivity, higher max SPL and it looks more impressive etc. But maybe what you are saying is correct.
I wonder if it is possible to mount...
Yes that was also my guess but I thought that possibly there was a decision made on the engineering side. I was just wondering.
Thanks !!
Steve
I noticed that the Everest DD 67000 uses a Beryllium midrange and the K2 9900 uses a magnesium midrange. What was the reason for not using the Beryllium midrange in the 9900? Just curious.
Thanks...
That is interesting. I didn't know that about the mono bass on the records. I grew up in the 60s so I am familiar with them. I also own an old McIntosh tube amp. I enjoy all of it.
Hi Ed,
It sound like you have a solid 4 way system. The 10" woofers in the 4410s can easily go down to 60Hz and your larger woofer / subwoofer can probably go much lower. That must make a nice...
87841
This is GP measurement at 2m. My problem is that I want to create a speaker with similar curve in a smaller box (hopefully 3 cu ft). The speaker shown in the measurement is 9 cu ft. My...
Hi Rob,
Thank you for that suggestion. Don't forget that I live in western Oregon where it rains everyday in the winter time LOL. Yes I understand the limitations of the gated measurements. ...
Yes I saw maybe a similar review on the L100T. I did not see a response curve (anechoic) on that but it is probably - 10db at 20Hz. I built a speaker last summer that achieved my design goals but...
Hi Richard,
Yes that woofer cone looks very unique. I don't believe I have seen that style before. I like the 5" 2 way designs because when used together with a 12" (or 15") woofer it becomes...
Richard,
When I saw your 2 images it reminded me that I have a similar one from Harmon but mine is a PDF from 2008. I could have found the TS data in my copy so I apologize for forgetting that I had...
Yes I think many people blend the L & R low freq together (mono). Do you have a pair of FR (full range) speakers sitting on top of Base cabs?
Nice article !!
Actually I don't have anything against Powered subs and a DSP / EQ. It is just that recently I am working on passive speaker projects. My goal is +/- 1.5db 20Hz to 20Khz. ...
Nice !! I have TS data for the 2235. Is it similar to the 2205?
This is off topic but do you have TS data for the 2205H? The data sheet that I saw for it didn't seem to have complete TS data.
Richard,
That is interesting. Does the "Plasiflex" cone basically look like plastic? I am assuming that it is the near field speakers are using the 5" that you mentioned before. In my experience,...
It looks like the VMPS has some similarities with a line array. On that one the specs are not at all specific.
On the Duntech the specs seem relatively clear but maybe you are referring to the...