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Post by Deleted on Nov 12, 2019 8:03:44 GMT -7
Hello Guys,
Had my Ghia out this weekend. I have been super happy with the sound of the Eminence Lil' Texas NEO I have in there but I was thinking about other speakers I have on hand and their sensitivity ratings as the Lil' Texas is pretty darn efficient.
Anybody know how 'standard' the ratings are from company to company?
As in, Celestion compared to Eminence, compared to Jensen?
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Post by pcns on Nov 12, 2019 10:37:08 GMT -7
Hi Eric, This probably isn't going to be much help but I recall there being discussion here a few years on this topic. I cannot recall the results but I do remember that the comments were made that each company measures a bit differently (I seem to recall Ted Weber being mentioned in this conversation too). Its a bit like guitar pickups in that the different companies measure SPL a little bit differently and that accounts for the differences? . . . . .
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Post by Paul (TRANE) on Nov 12, 2019 10:44:43 GMT -7
Ted Weber told me that all companies measure differently and that his 100dB is not going to be the same as 100dB from other groups.
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Post by headshrinker (Marc) on Nov 12, 2019 10:58:36 GMT -7
What Todd says above is what I've been told also. You can compare within manufacturers, but not between. Though often you can get a general idea between.
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Post by doctorice on Nov 12, 2019 13:38:33 GMT -7
I thought this was going to be about corporate sensitivity training, My mistake.
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Post by KeithA on Nov 12, 2019 14:20:28 GMT -7
I thought this was going to be about corporate sensitivity training, My mistake. Ha ha!
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Post by John on Nov 12, 2019 15:02:51 GMT -7
I have been told/learned that you only compare the db sensitivity....within the same manufacturer. Celestion to Celestion. Weber to Weber....etc. You cannot compare a Celestion to an Eminence, as they measure slightly differently.
Because as a general rule it seems:
Eminence= LOUD Weber= quiet Celestion: in between Emi and Weber Jensen= very quiet
...meaning an eminence speaker rated at 100db will still be louder than a Celestion speaker rated at 100db. But this is a VERY broad categorization.
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Post by Deleted on Nov 12, 2019 15:23:08 GMT -7
Thanks guys. I have a couple 90's Italian Jensen P12Ns over here. One is loaded in my 80's Rivera-era Deluxe II. I could 'audition' that one through the Ghia to get a rough estimate without taking anything apart. It's one of the more efficient Jensens but my bet is it's gonna be quieter than the Eminence Lil' Texas.
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Post by Mark (Basement Enthusiast) on Nov 12, 2019 15:26:19 GMT -7
Eric, you got a Dr. Z 1x10 cab laying around anywhere? I know the Ghia sounds great with the Celestion G10 Greenback, and it's definitely "less loud" than a 12" speaker.
Edit: I can confirm, too, that those Eminence Lil' Texas are pretty darn nice. One of them almost made it the full distance replacing the stock Eminence in my Carr Rambler. (They're both Eminence, of course, and very very similar; the lighter weight of the neo, though, was great.)
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Post by John on Nov 12, 2019 16:09:32 GMT -7
Thanks guys. I have a couple 90's Italian Jensen P12Ns over here. One is loaded in my 80's Rivera-era Deluxe II. I could 'audition' that one through the Ghia to get a rough estimate without taking anything apart. It's one of the more efficient Jensens but my bet is it's gonna be quieter than the Eminence Lil' Texas.
Without jumping on the Google to verify, I remember a lot of Jensen speakers have smaller magnets. (I think) These smaller magnets...with their weight reduction, plus their (possible) lower db efficiency....could satisfy the two issues you're looking for: weight and efficiency. Can't say anything about tone, as I have NO experience with Jensens. (Italian, USA or other)
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Post by premiumplus (Dave) on Dec 3, 2019 9:46:07 GMT -7
That's a great question! I assume that major manufacturers use an anechoic chamber for testing, but is the equipment used calibrated to NIST (National Institute of Standards and Technology) standards? Do they use the same type of baffle or enclosure for the speaker? There are so many variables that some standard of measurement has to be used.
Ideally you'd need to get the speakers together and test them under identical test conditions to get useful, comparable results. Either that or every speaker manufacturer would need to follow the exact same procedure. I know over the years Altec and JBL have gone to great expense to measure their speakers and it would be really interesting to see how others go about it.
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Post by Deleted on Dec 9, 2019 9:17:22 GMT -7
As I'm getting picked up for some midwest gigs in a couple hours I finally got around to un-scientifically testing these 2 speakers, the Eminence Lil' Texas Neo and my 90's Italian Jensen P12N Bluebell Alnico.
Unscientifically, the Eminence sounded louder so I swapped the Jensen into the Ghia cab for the week. I do remember this speaker fondly. I had one in an ISO cab at the studio and another in my 80's Deluxe II for most of the 90's.
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Post by 2Cents on Feb 16, 2020 3:57:12 GMT -7
Yeah, I know I’m late to the party, but my suggestion could be as useful tomorrow as it might have been yesterday.
Therefore, since SPL (sound pressure level—aka speaker sensitivity level) is measured in dB’s (decibels), I suggest a modestly priced decibel meter (available online) to measure the efficiency of different speakers. Do your own tests—just be consistent with your methods from speaker to speaker.
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