Sean Bugg wrote on Fri, 31 December 2010 13:48 |
Bob Healey wrote on Thu, 30 December 2010 18:04 |
Ah, now I see what you're asking.
The NL4s are just in parallel: they pass the full range signal to the tops- there's no low highpass/lowcut when passing a signal through the Sb122.
While the Sb122 isn't the best sub, I like mine - they add a decent amount of low end to my Zx1s, I can carry one in each hand, and they're pretty cheap.
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This is what confuses me. http://www.electrovoice.com/sitefiles/downloads/SB122_EDS.pd f
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What that manual is describing is the 2 x NL4 connectors are literally connected directly (in parallel) to each other - the low pass is only after both the NL4 connections - effecting the driver in that sub box only.
The signal can go into either NL4 and out of the other (regardless of how they are labelled) and it will still be the full range signal that the amp is outputting along all the cable runs.
The reason they have done this is so that you can just run one signal out to both sub and mid-high cabinet. The low pass is just to stop the sub getting fed high frequencies, similar to the circuitry for woofers in most passive mid-high boxes.
For your application of linking 2 subs off of one amp channel, just run the NL4 from the amp into one and use another NL4 cable to link into the other. The low pass will only happen once for each sub, the signal between the subs will be full range.
If the 160Hz low pass is indeed to high for your application then you will need to look at using a DSP to filter the signal before the amplifier.
Hope this helps
Gareth