
sahlomonic
Well-known member
I got this in a Seismic 1x12 with a Crate BV60 for freaking $50 this week. No idea what this speaker is intended for or how it sounds, but I'm trying to see if anyone here has experience with them at all?

Sam says the K has huge lows.I think it's like a D-120
Both designations have an Alnico magnet, but the design is slightly different.
"K" series has more RMS capability, but "D" series apparently has a rounder sort of tone.
The E120 is the one with the biggest lows (300w, ~23lbs), but any 120 series JBL will have much more low end (and highs) than any CelestionSam says the K has huge lows.
I find actually the D's to sound sharper and punchier/tigther (at least for the orange back D120F's), but really vs most Celestion any of these JBL's will come off pretty sharp and aggressive in highs. If you want a rounder sort of tone stay the hell away from any JBL LOLI think it's like a D-120
Both designations have an Alnico magnet, but the design is slightly different.
"K" series has more RMS capability, but "D" series apparently has a rounder sort of tone.
They work great to blend with a Greenback, tho'I find actually the D's to sound sharper and punchier/tigther (at least for the orange back D120F's), but really vs most Celestion any of these JBL's will come off pretty sharp and aggressive in highs. If you want a rounder sort of tone stay the hell away from any JBL LOL
They do, particularly the 20w Greenbacks, but they work well with a bunch of different speakers. My favorite combo so far has been with Redbacks on top and either D120F's or E120's on bottom. Those Celestion’s I think fill in the mids the JBL's lackThey work great to blend with a Greenback, tho'
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The JBL D-120s remind me of the Altec 417-8HThey do, particularly the 20w Greenbacks, but they work well with a bunch of different speakers. My favorite combo so far has been with Redbacks on top and either D120F's or E120's on bottom. Those Celestion I think fill in the mids the JBL's lack
Yeah the JBL's and Altec's sort of sound like cousins to me. I find the JBL's still have more low and highs, but the Altec's are more warm, woody and less scooped. I don't like the 417H as much, but the 417C and 417B are some of my favorites, top 3The JBL D-120s remind me of the Altec 417-8H
Very efficient speakers.
I'm happy you found one !Those K's have been harder to find for me than the D series. The ones I have seen lately were exorbitant. So unless you get a deal from someone who doesn't know or care. That is my favorite JBL and favorite all time speaker because it takes a lot more abuse than a D series will and still gives the classic tone. I would def hang on to that speaker especially if it's in good cosmetic shape also. NICE score.
I have my 2 120F orange frames in with 2 Altec 417Cs. Great combo.Yeah the JBL's and Altec's sort of sound like cousins to me. I find the JBL's still have more low and highs, but the Altec's are more warm, woody and less scooped. I don't like the 417H as much, but the 417C and 417B are some of my favorites, top 3
I find those combos can be cab dependent, but I preferred in mine both of those either as full quads or with 20w GB’s (heritage is what I had in 8 ohms to use with) or RB’s to better complement their voicingsI have my 2 120F orange frames in with 2 Altec 417Cs. Great combo.
The upper mid zing of the Altecs go great with the scooped 120s, in a Marshall B cab.I find those combos can be cab dependent, but I preferred in mine both of those either as full quads or with 20w GB’s (heritage is what I had in 8 ohms to use with) or RB’s to better complement their voicings
Altec’s across the board IME (B’s, C’s and H’s) are very subdued in the uppermids (you might mean higher frequencies that add zing?) and part of their unique hollow character in that region that I also hear in RR and Santana’s recordings, but that also might be why imo they can work very well with Marshall’s and my SLO. Both JBL’s and Altec’s have that American flat/subdued midrange (JBL’s just a lot more so), which is why I felt they actually weren’t the best functional match, at least in my KW cabsThe upper mid zing of the Altecs go great with the scooped 120s, in a Marshall B cab.
We hear differently; the JBLs in my cab are clearly scooped while the Altecs are not. To me, it's a great combo. But, maybe my Cs are a little different than yours? The 417Hs I had, are WAAY more mid scooped than my Cs. Huge difference there.Altec’s across the board IME (B’s, C’s and H’s) are very subdued in the uppermids (you might mean higher frequencies that add zing?) and part of their unique hollow character in that region that I also hear in RR and Santana’s recordings, but that also might be why imo they can work very well with Marshall’s and my SLO. Both JBL’s and Altec’s have that American flat/subdued midrange (JBL’s just a lot more so), which is why I felt they actually weren’t the best functional match, at least in my KW cabs
As a whole quads there’s a nice cohesiveness to their sound I find and with the right Celestion fill in the mids and upper mids they lack