I disected my old N-1600 crossover

**cradeldorf** · May 10th, 2012, 01:19 AM

Unfortunately I'm at

**Altec Best** · May 10th, 2012, 04:58 PM

I'm sure you could find a capacitance & Inductance meter for maybe $20-$30 bucks..

**bowtie427ss** · May 10th, 2012, 05:05 PM

Originally Posted by Altec Best

I'm sure you could find a capacitance & Inductance meter for maybe $20-$30 bucks..

Pretty handy to have, and surprising how much it gets used.

But, every now and then i wish i'd splurged and spent more for a better capacitance bridge that will measure ESR and leakage.

**Altec Best** · May 10th, 2012, 05:23 PM

Yes the better ones are a bit more. $70-$100 I think depending on Brand and models.

**donaldpatten** · May 10th, 2012, 11:35 PM

Your N1600 agrees with my N1600C's, The only difference is the newer C has a 25 Ohm pot for HF level adjustment. While the N1600 uses the coil ( 1 mH ? ) as an autoformer . By changing the tap, the HF level is adjusted.
Buy the way my N1600C's were potted with a wax-tar ooblick.
Re the testers: I found a used Heath LRC bridge. Also, I use a Fluke 87 DVM to measure frequency, and by adding a 1% cap to form a resonate ckt I can test , and tune coils .
Don

**aditya** · May 11th, 2012, 09:18 AM

Originally Posted by cradeldorf

It just seems strange that the negatives from both speakers would feed back into the positive connection through a Cap? It also seems strange that the LF positive is straight from the amp to the speaker? with no components in the signal.

This is a "series-type", 1st-order xover network. That's why both the drivers are in series to each other, and both the free ends go to the amp's two output terminals. If you look carefully into the wiring, you will notice that the woofer is actually connecting the amp output via the inductor, and the tweeter via the 16mfd in a similar manner.

Series type xovers have an advantage over the more common parallel types in that, once tuned, they do not create any amplitude mismatch between the drivers at the xover point, when one of them shifts it's impedance (there are many reasons for this). What it does is that it actually shifts the xover frequency a little, but keeps the overall levels unchanged. This nature of these types of xovers is very useful in situations where one is forced to mate two drivers at a frequency which is very close to the resonance 'f' of one of them (usually the hf drivers).

As a result of the above mentioned reasons, these xovers have a very different (actually good) sonic quality, as it removes the resonant additions by the hf driver, giving a very coherent quality which also sounds very flat & harmonically rich. In fact there are dedicated worshipers to this school of design.

**Alien_Shore** · May 11th, 2012, 08:11 PM

This is great info. The more I think I know, the more I understand I have to learn. It is incredible how complex all this is.

**mah** · May 12th, 2012, 12:27 AM

You will find it hard to find a better audio electonics site on the web. Rod Elliot not only knows his stuff but is also gifted in being able to clearly communicate theory, as well as how circuits are designed and put together. What's more, he shares it for free. Should you decide to build one of his projects(which are top-class and not expensive)he is willing to help if you have a problem. All our forum members should list his site in their 'favorites' list.