Specification of Lancer 44

[mda3313]

Any information please? especially the frequency range and the sensitivity.

[yggdrasil]

http://www.lansingheritage.org/html/...67-l44-l47.htm

[mda3313]

Thanks. But I want more details. There is no sensitivity or frequency information there.

[Earl K]

Here;

- Download this pdf from JBL Pro to get the info that you're after.

- You're alnico versions are close enough to these specs to make the differences insignificant.

- Here's a link to the index for other obsolete parts.

- Did you build an L-Pad as Giskard suggested to help balance your le175 with those le8t(s) in your custom project ?

[mda3313]

No, not yet. I am still trying to balance the sound with N1200 only with different position of the 175. From the spec, even setting the N1200 to the min. level, the 175 is still 10db louder than the LE8T. However, in my room, the sound level between 2 drivers is probably less than the measurement. This is the reason why I am asking for the spec. of the speakers but not the drivers.

[GordonW]

Are you using the Lancer 44s as a "full-range" bass driver (ie, as the only LF driver in the system), or is there a subwoofer driver?

If there's a subwoofer, one suggestion might be to remove the PR8, and install a SECOND LE8 into the cabinet, making it into a dual-driver midbass/midrange array. It will no longer go down below about 50-60 Hz (due to the loss of the passive radiator bass reinforcement), but the overall output level of the LE8 "array" (ie, the two of them together in one cabinet), should be in the order of about 6 dB louder than one single driver.

Dunno if this works with your plans, but I thought it would be good to at least mention the idea...

Regards,
Gordon.

[Earl K]

No, not yet. I am still trying to balance the sound with N1200 only with different position of the 175.

- That makes no sense to me . One reason Giskard suggested adding an extra LPad into that Horn circuit would be to help you balance the horn to the woofer(s) .

- Do you know how to create a 6 db pad out of 2 resistors ? Depending on your country of location , total cost for two channels is going to be $ 1 to $ 4.00 for standard 10watt wirewounds . Wire it up after the Hipass portion of the crossover.

- Did you end up running 2 le8t woofs per channel in those "L-44" boxes ( as per your other thread ) ?
- If so , I'm hoping that you realize that you've dropped the Low Frequency load impedance from @ 8 ohms down to around 4 ohms . This means that the inductor & capacitor ( LC ) components in the woofer leg of the crossover are now the incorrect values to maintain a 1200 hz crossover point. .

- I think I'd sell those N1200(s) and buildup from scratch, some custom 2-way networks if you want to use two woofers per box .
- The two woofers per box idea , does have some merit ( IMO ).

FWIW : here's a link to the N1200 network schematic ( It's a 1 meg file for those on dialup ) .