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Multi-Way Conventional loudspeakers with crossovers

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Old 9th November 2011, 09:47 PM   #171
Salas is online now Salas  Greece
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Did you keep track of last night's volume settings and source material to be sure? I have seen woofers gaining 1dB sensitivity after some initial use in the past after rubber and glue got worked a bit. Not unusual.
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Old 9th November 2011, 09:54 PM   #172
Starre is offline Starre  Sweden
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I am pretty sure of it, I have stepped settings on my volume and earlier I put it beyond "12 o´clock" and now it is sufficient at 12. I just listened again and it has very good dynamics, low level detail is very good and I hear info I never heard before from bass and all the way up in frequency. It seems the filter parts is very good allowing the drivers show all that detail.
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Old 9th November 2011, 09:56 PM   #173
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Salas what is the Frequency Response and sensitivity of the speaker?
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Old 9th November 2011, 10:04 PM   #174
Salas is online now Salas  Greece
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Quote:
Originally Posted by Starre View Post
I am pretty sure of it, I have stepped settings on my volume and earlier I put it beyond "12 o´clock" and now it is sufficient at 12. I just listened again and it has very good dynamics, low level detail is very good and I hear info I never heard before from bass and all the way up in frequency. It seems the filter parts is very good allowing the drivers show all that detail.
Yes its true you did not make a cheap crossover, much dearer than normal commercial standard.
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Old 9th November 2011, 10:13 PM   #175
Salas is online now Salas  Greece
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Quote:
Originally Posted by Dufus View Post
Salas what is the Frequency Response and sensitivity of the speaker?
87-88dB SPL. About frequency I only saved a pink noise response chart from full stereo pair replay in room. Its listening spot taken at 2.5m including all interference and nodes. Its a kind of that particular living room and speakers ''house curve''. It takes a frame of curves and averaging around the listener to be more informative, but anyway.
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Old 9th November 2011, 10:24 PM   #176
Starre is offline Starre  Sweden
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I am pretty sure they measure even better in a room made for measuring. As you mention Salas, that is in a normal living room with its standing waves which is hard to avoid.
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Old 9th November 2011, 10:27 PM   #177
Salas is online now Salas  Greece
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Even when they do that house curve they average many measurements for each channel and then they average the two sets outcome. That one solo take is the worse possible. It includes not only standing waves, but room reverberation and absorption also, since its pink noise RTA. Still I have seen much worse with just one spot take from a pair playing together in real rooms.
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Old 16th November 2011, 09:08 AM   #178
Starre is offline Starre  Sweden
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Some info about what is going on right now. I have screwed the bass port tubes to the speakers. I have a test CD with frequency tests for bass and so on and I discovered I have sound in the 20Hz band, weak but present, that was a surprise. I am planning to make a listening chart from 20Hz and upwards to 100Hz to figure out how the bass is doing.
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Old 16th November 2011, 12:17 PM   #179
Starre is offline Starre  Sweden
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I have now done a listening chart, it is subjectly made but rather exact from many listenings. I use a level grading from 1 to 5 where 1 is very weak but you hear something present. Its range is from 20Hz-105Hz. Speakers a little closer to back wall now, 55cm from center of back panel to wall.

Freq:Level
20Hz:1-
21Hz:1
24Hz:2
27Hz:1
30Hz:2
33Hz:2+
36Hz:3
39Hz:3+
42Hz:3+
45Hz:4
48Hz:4+
51Hz:4+
54Hz:4
57Hz:4-
60Hz:4
65Hz:4+
70Hz:5-
75Hz:4
80Hz:4
85Hz:4-
90Hz:4
95Hz:3
100Hz:2+
105Hz:3

Last edited by Starre; 16th November 2011 at 12:24 PM.
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Old 16th November 2011, 12:29 PM   #180
Starre is offline Starre  Sweden
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I should say that the bass-reflex tube is 135mm. Next I will try a frequency sweep 20Hz - 7kHz and listen.
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