I picked up a pair of D123's with original cone (stamped 123 504) this week. These are very cool speakers. Light weight and lower wattage, they won't take the wattage of the D120's but they have a very similar sweetness to them. They seem to have the same crispness. The slightly more rigid ribbed cone may be part of that.
They are Alnico, but with a much smaller magnet they aren't going to offer quite the same bottom end. They also break up quicker than the E's, which might be very helpful in getting that same push that Jerry was getting, but at a much lower volume. I think a pair would be great with 35-40 watts of fender... or an mc-50... and a single would be perfect for a princeton or deluxe. Thanks for the info brad.
Oh... also, check the finished auctions on ebay, I think you'll find them affordable... much more so than some of the BIN prices would indicate. IN fact I may have to pick up a second pair to stash away for down the road.
SarnoMusicSolutions wrote:Also, the other JBL that gets discussed around here is the 10" D110, K110, E110. That speaker actually has a very different motor and in turn it has a different treble voicing and frequency response. The 15" and 12" JBL's use the same 4" voice coil motor. The 10" JBL's as well as the amazing and super secret JBL D123 use the smaller 3" voice coil. Personally, I love the sweetness and hi-fi tone of these 3" versions, but I find that they have such extended highs that it's almost like there's a tweeter involved. I guess the lower mass of the smaller voice coil and smaller dusctcap allows for it to deliver more highs with greater ease. But still a fantastic sounding speaker that does deliver a nice Jerry tone, just not as accurately as the 12" or 15" with that classic 4" voice coil.
By the way, the JBL D123, while being one of the most amazing speakers in the world, is only rated for about 30 watts or so. So putting it in anything louder than a Deluxe Reverb would be risky. If you like the body and character of a 12" but also like that sweeter, crisper 3" JBL voice coil, the D123 is a very interesting speaker. Not all that rare either, just rare as a guitar speaker. Harvey Gerst, the guy at JBL who helped develop many of these JBL's that we revere, says that the D123 is his favorite guitar speaker, especially for bluesy tones. In the midrange/mid-treble it's like a mellower, darker D110 but with the same clear and crisp top end. Just don't abuse it!! You may never be able to recone it properly.