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Author
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Topic: JBL D130 vs. K130
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Marty Nemanick
Member From: Madera, California, USA
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posted 24 February 2005 08:36 PM
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Lately there have been several interesting posts regarding JBL speakers.The "D" and the "K" series always seem to be the most desirable. What is the difference between them? |
Jerry Gleason
Member From: Eugene, Oregon
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posted 25 February 2005 12:19 AM
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The the JBL K series was an updated version of the D series. It uses the same frame and alnico magnet assembly, but painted black instead of gray, and has a higher wattage voice coil, 200 Watts, I think. There may be other minor differences, but I'll leave that to the JBL experts here. D and K series speakers sound very similar to me. The E series, with it's bigger (and much heavier) ceramic magnet sounds different, more like a Black Widow, at least to my ear. |
Bob Carlucci
Member From: Candor, New York, USA
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posted 25 February 2005 04:06 AM
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They sound the same to me... I think both sound nicer than any BW ever did,but I know I'll get arguments on that... bob |
Jay Ganz
Member From: Out Behind The Barn
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posted 25 February 2005 06:56 AM
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David Doggett
Member From: Philadelphia, Pennsylvania, USA
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posted 25 February 2005 07:01 AM
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I have read here on the Forum that the K series have thicker paper for the higher power handling rating. I don't know how noticable the difference is in the sound. The old D series were really only rated for about 60 watts. So for regular guitar for a player that likes to run an amp at top volume, the amp should have less than 60 watts. That would include Stevie Ray Vaughn's Vibroberb, which basically had a Pro Reverb chassis. Steelers who use a volume pedal might get by with one of these in a 100 watt amp, because one typically attacks notes with the volume pedal at least half off. Any more power than that and it would be wise to use two speakers to handle the power safely. That is one reason Fender typically used two D120s in the Twin. |
David Spangler
Member From: Kerrville, TX USA
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posted 25 February 2005 08:09 AM
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I downloaded a brochure from the JBL Pro website for the K-series. They were rated at 125W. So far, I haven't been able to learn about the details that make the D and K series different. I do know that the recommended recone kit for the K series is the E series kits. The E-series are rated at 150W RMS but I believe have a higher Gauss rating (magnet strength) than the D or K. It would be interesting to know if the D-130F and K-130 have the same Gauss and magnetic gap dimensions. Ken Fox' post on the D-130 "truth" indicates a larger gap for the D-130F to improve power-handling.------------------
David Spangler |
Dave Grafe
Member From: Portland, Oregon, USA
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posted 25 February 2005 01:34 PM
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quote:
Ken Fox' post on the D-130 "truth" indicates a larger gap for the D-130F to improve power-handling
This is correct. Jay's beautiful post of the old D series fact sheet is for what JBL called the "HiFi" speaker. The D130F ("F" ostensibly for "Fender") was the "musical instrument" version and was rated at 125 watts RMS, due to the slightly enlarged gap. The cone and voice coil remained the same.The K series speakers incorporated some minor changes which amount almost entirely to a different color of paint on the basket, otherwise they were identical to the D"F" series speakers. I know of no differences in the cone construction until the E series was introduced. I use them interchangeably. The cones of the E series are of heavier construction and the flux density is up to 13,500 gauss from the 12,000 gauss of the K and D series. As a result there are slight tonal differences, primarily in that the upper mids jump out more and the high end rolls off just a bit earlier. I am using an E130 at 4 ohms in my Randall amp and it works just fine, but the old 8 ohm D130 (re-gapped by JBL to the "F" spec, re-gaussed and reconed a few years back) in my old rig is a bit sweeter to my ear and I still use it now and then when I want a second speaker. Here are the JBL sites for more info on K and E series transducers:
http://www.jblpro.com/pub/obsolete/k_series.pdf http://www.jblpro.com/pub/components/eseries.pdf [This message was edited by Dave Grafe on 28 February 2005 at 10:11 PM.] |
Len Amaral
Member From: Rehoboth,MA 02769
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posted 26 February 2005 07:07 AM
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I have a 15 inch K-130/8 ohm speaker that I was going to put in an Evans SE-150 amp with a stock 15 inch 4 ohm speaker. How much of a power loss will I experience from the 4 ohm to the 8 ohm speaker? |
Jay Ganz
Member From: Out Behind The Barn
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posted 26 February 2005 07:22 AM
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If the Evans is 150 watts at 4 ohms, it would
be roughly 100 or so at 8 ohms. A 200 watt
amp at 4 ohms would go down to about 160 watts.
You won't notice any volume difference but the
"headroom" (volume before distortion) will decrease somewhat. |
Jack Stoner
Sysop From: Inverness, Florida
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posted 26 February 2005 07:36 AM
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The power formula is E squared divided by RIn the case of an Evans SE-200, it is rated at "200 watts" into a 4 ohm speaker. But, with the current Emminence Deltalite speaker, which is 8 ohms, the power is only 128 watts. The max voltage is 32 VDC at the speaker for the SE-200, thus 32 squared (1024) divided by 8 equals 128 watts. In the case of a Nashville 400, it's rated at 28 VDC into a 4 ohm speaker. If you installed, for example an Emminence Delta Lite speaker which is 8 ohms, the maximum power would only be 98 watts, compared to it's rated 210 watts with the supplied 4 ohm 1501-4 BW speaker. |
Joe Alterio
Member From: Fishers, Indiana
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posted 28 February 2005 05:15 AM
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quote:
compared to it's rated 210 watts with the supplied 4 ohm 1501-4 BW speaker.
It is rated 210, but using the formula, the amp would only put out 196 watts with the stock BW speaker. What accounts for the differential?  Joe |
Randy Carson
Member From: Cedar Park, Texas, USA
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posted 05 March 2005 08:50 PM
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Len,
Evans SE 150 comes stock with an 8 ohm speaker, but they rate the amp at 4 ohms.however it does not come from the factory with a 4 ohm speaker just call Evans. They say its 150 watts into 4ohms but stock it with a 8 ohm speaker. So if your using the stock speaker that comes with it you will loose nothing, but will gain a whole lot of tone with the K speaker. same with the SE200 it comes with an 8 ohm speaker but its rated at 200 watts into 4 ohms, meaning you can change it but from the factory that amp is not 200 watts unless you custom order a 4 ohm speaker. I was going to buy the SE150 and put a 4 ohm speaker in it to get the most out of it, but when I talked to Evans they didn't really recommend a 4ohm speaker in it stating something about the heat sink, so I'm not sure if you can run a 4ohm speaker in the 150 or not but i do know that it is rated at a 150 watts into 4 ohms. SOUNDS FUNNY I know but ask them why its this way, unless something has changed in the last year or so. Put the K in and I bet you dont loose any power or headroom, but I bet you gain tone!!
R C |
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