JBL crossover / impedance interaction
In looking at the JBL 3110 and 3120 passive crossovers, I have noticed that the 3110 (800 hz) is listed as being set up for a 12-16 ohm woofer while the 3120 (1200 Hz) is listed as being for 8-12 ohm woofers. Those numbers vary a little from one JBL publication to the next, but it seems to indicate that the 3110 was designed for 16 ohm woofers and the 3120 was designed for 8 ohm woofers.
My question is: How will the crossover curve be affecteed if you were put an 8 ohm woofer (and the correct 16 ohm HF) on the 3110 crossover?
...I suspect that the woofer might extend a little higher, passing a little more high frequency and I suppose creating a slight rise in the overall response around 1K. ?
Any explanation on all this and what I will get using this 3110 w/ an 8 ohm woofer?
Thanks,
Tom
Re: JBL crossover / impedance interaction
Tom,
Take a look at the resistors in the conjugate/zobel networks on the LF drivers. In the 3110 it is 10 ohms and in the 3120 it is a whopping 15 ohms. The 3120 is going to be more sensitive to LF impedance than the 3110 will be. For example, an "8 ohm" 2242H has already reached 10 ohms by ~ 500 Hz.
Different forum category for that request
And could you be more specific on what you are wanting to buy!
:blink: