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JBL-L-112 stacked

mikewish

mikewish

Active Member
Just wondering if anyone else has run stacked JBL L-112's? Right now I am running mine through a heavily modded Sansui AU-7900. They are sitting next to a pair of Norman Labs Model Tens hooked up to my HT receiver. I have listened to this combination for several months now. I can feed to either system from my media center computer. The L-112's stacked sound very, very good. The Norman Labs Model Tens can stay with them for the most part.

I plan on a direct comparison with my stacked OLA's as soon as I can refoam the Advents.
 
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I hope you're disconnecting one of the 044s in each side, or at least orienting the stack so the tweeters are as close as possible.

Perhaps another interesting comparison might be between a single L112 pair versus L112s stacked. :dunno:

(Or a single-pair installation of L150As?)

Happy Turkeyday!
 
That is a no-brainer!

Top set is flipped upside down so that the tweets are next to each other. In my experimentation, they sound better than a single pair. I have tried both ways since I had to restore both pairs from a previous owner's attempts at refoaming the woofers. Elevating a single pair with tweets at ear level while sitting sounds very good, but the stack sounds better. I have also tried the two alignments of having the tweets to the inside and to the outside. I prefer the tweeters to the inside offset.
 
Are you sure it isn't increased volume making you think they sound better? The only way to know for sure is volume matched stacked v.s. unstacked measured with a db meter. Stacking tends to introduce comb filtering and mess up sound staging.
 
They still image very well. I have not notice any filtering effect. Not saying its not there, but if there is any presence of comb filtering, it is in the mid-range. I ended up with four speakers and one the previous owner had tried to sand a cabinet (even though these are some of the finest cabinet I have seen on L-122's) and left a bare spot on top of one. So I stacked them to hid that screw-up. I plan on keeping one pair anyway (most likely the the pair with one bald spot). I have no clue where my old db meter is and I don't have a good enough mic to place in the room for detailed analysis by other means. I was hoping someone might have already done some of this work.

As I am downsizing my collection, I am playing with different combinations of vintage gear and just seeing what happens.

The bass is just as strong from the L-112's as from the Normans. If anyone is not familiar with Norman Labs Model Tens, they are designed to play with plenty of bass! The Tens also really shine in digital formats. Amazingly so.

I find that the L-112 stack is much better near-field. So the pair I keep will most likely end up in the office being pushed by a Sansui Seven using the computer as its source. Source could change to having a TT and R2R added, but who knows? That is the fun of this addiction!
 
IMHO the L-112s need no help, they are a great sounding speaker system all by themselves. I have owned a lot of higher end JBLs that do not sound nearly as good as the 112s.
 
That is why I am selling one pair and keeping one pair. I have run them stacked for a couple of months just to see how they sounded. The one pair I keep will end up in the office or garage powered by either my Sansui Seven or my Sansui G-7500. Even though I am tending towards my HPM 100's in the garage, and then putting Klipsch Epic CF-2's in the bedroom.

I still prefer the large JBL studio monitors for mains. I should have never sold my JBL 4333A's! My next set-up for my HT will be Altec 9842-8D's for mains with Altec Model 14 center, with Altec Model 8's for the rear.
 
mikewish said:
They still image very well. I have not notice any filtering effect. Not saying its not there, but if there is any presence of comb filtering, it is in the mid-range.
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Offering more credibility to the design of the L150A . . . perhaps.
 
redbeard74 said:
Theebadone
Just curious which models you preferred the L112s to?
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For a start, the 4412s aren't nearly as musical as the L-112s at least not to my ears. The 4410s are a little better, bass wise, but still not as good as the 112s You can throw the C-38 with the 030 load in there too, the L-112s top end tromps the 075 tweeter with any type of music. IMHO the L-112 is tough to beat.
 
theebadone said:
For a start, the 4412s aren't nearly as musical as the L-112s at least not to my ears. The 4410s are a little better, bass wise, but still not as good as the 112s You can throw the C-38 with the 030 load in there too, the L-112s top end tromps the 075 tweeter with any type of music. IMHO the L-112 is tough to beat.
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Thanks. I have been enjoying my L112s and thinking about where they fit into the JBL hierarchy. Seems like they are close to the top as far as bookshelfs are concerned.

It would be nice to hear a stack of L112s, Mikewish you are lucky!
 
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