Hello all!
I refoamed the woofers of my beloved L110A speakers . Please let me know is my refoam job done OK? There is no collision between the coil and the magnet, tested it with 50Hz tone.
Hello all!
I refoamed the woofers of my beloved L110A speakers . Please let me know is my refoam job done OK? There is no collision between the coil and the magnet, tested it with 50Hz tone.
I use stands shown on the picture I attached. Is it better using these stands or go for lower JBL stands?
Originally Posted by vrobec
I use stands shown on the picture I attached. Is it better using these stands or go for lower JBL stands?
The refoams look great !!
stands ? tweet closer to ear level the better., but closer to floor or room corners reinforces bass.
Some kind of happiness is measured out in miles
Requested DCR specs for LE111A
Min. 5.5 - Max. 6.5 Ohms, Aquaplas on the back of the cone
Thank you!
According to the posted specs the LE111A has nearly 1.2 ohm higher DCR than the LE111H.
The L110 has (with 033, LE5-10 and LE111A drivers) higher resistance (6.3-6.6 ohm) measured on speaker terminals. My L110A (with 033, LE5-10 and LE111H drivers) has 5.1 and 5.2 ohm.
Hi vrobec,
Nice refoam job.
As for the speaker stands, the higher they are and the further you move from 2Pi placement going more in the direction of 4 Pi placement (free field). This decreases room low frequency reinforcement or gain. You decide which LF sound you prefer most based on stand used. The speaker's owner manual should provide some placement guidance.
On the other hand i note you seem to have a hard tile floor which is generally not great acoustically because of sound reflexions it promotes. Another reason why you need to experiment with placement/stands and play this by ear... Regards,
Richard
Excellent refoam. Very tidy
Your re-surround job looks fantastic!!
Want to do my 10-inchers for me?
". . . as you have no doubt noticed, no one told the 4345 that it can't work correctly so it does anyway."—Greg Timbers
Just to be sure your results are correct, have you "calibrated" your DMM, meaning measured its residual resistance? Put DMM in ohm mode, join the two test leads together for a few seconds until data stabilizes, and note the number indicated, which you must subtract from DCR driver or speaker readings.
Depending on DMM accuracy (quality and price) it may show enough resistance by itself to falsely indicate a driver is off specs. My low cost ($25-30.) DMM has 0.6 - 0.7 ohm residual resistance (enough to fool a DCR reading), while the $80. unit has 0.0-0.1 (nice), and the $150. DMM is a perfect zero residual resistance. Try it with yours, you'll see. Mabe you'll need to revise your DCR numbers.
It is possible JBL's switch to ferrite magnets has caused some other changes, like in DCR numbers.
You were right. I have to subtract 0.2 ohms. So the real DCR values for speakers are 4.9 ohm and 5.0 ohm, measured on terminals.
Thank you all! I tried my best.
Hello all!
Just a short question about L110A. Today I measured with DMM the resistance on speaker terminals. One speaker is 5.1ohm, the other is 5.2ohm.
I know the crossovers determines them, but are these values OK? The speakers sounding fine, but the specification say 8ohm.
Can't say if what you measured is correct or not. But the 8 ohm spec is a NOMINAL figure only. Its not unusual for speakers to actually measure lower than spec.
Richard
Just measured L19 speakers with DMM. They are 5.7ohm and 5.8ohm.
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