I Bi-Amped my DRs even though they had Piezo arrays, not for performance gains, but I liked to turn down the gain on them.
For simplicity sake (one less amp to haul around) I'm wiring my new Otop8s (CD not piezo this time) with a passive, BUT I want the ability to bi amp in the future, should I feel the itch to do so.
I'm sure this wouldn't normally be recommended, but will this work? I've seen other commercial cabs with a bi-amp and normal inputs...
Was also thinking about adding a Zobel filter to the mids? Probably not recommended if Bill didn't put it in the plans...
And was also thinking about a fixed L-Pad for the highs? I suppose the answer to that would be to just EQ down the highs if they are too much?
Thanks for letting my kick the can around....
Passive Crossover questions
Passive Crossover questions
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
-
- Posts: 8322
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Passive Crossover questions
On the NL4 for the passive - you'd only have two wires coming into the crossover (full range).
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: Passive Crossover questions
ah yes.
Now I can plug a 2 pole speakon cable into a 4 pole jack, but not the other way around, right?
Now I can plug a 2 pole speakon cable into a 4 pole jack, but not the other way around, right?
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
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- Posts: 8322
- Joined: Fri Nov 27, 2009 11:37 am
- Location: New Braunfels, TX
Re: Passive Crossover questions
Yes.....always use the 4 pole jack and either the NL4 or NL2.....stay away from the old 2 pole jacks and plugs. Those suck....
https://www.parts-express.com/Neutrik-N ... nt-092-052
https://www.parts-express.com/Neutrik-N ... nt-092-198
6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210
"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Re: Passive Crossover questions
I'm fairly certain you'll need to put a switch in that isolates the crossover from at least one of the drivers when in bi-amp mode. Otherwise, the two amps will be connected through the crossover circuits.J_Dunavin wrote: ↑Sun Sep 12, 2021 3:04 pm I Bi-Amped my DRs even though they had Piezo arrays, not for performance gains, but I liked to turn down the gain on them.
For simplicity sake (one less amp to haul around) I'm wiring my new Otop8s (CD not piezo this time) with a passive, BUT I want the ability to bi amp in the future, should I feel the itch to do so.
I'm sure this wouldn't normally be recommended, but will this work? I've seen other commercial cabs with a bi-amp and normal inputs...
Was also thinking about adding a Zobel filter to the mids? Probably not recommended if Bill didn't put it in the plans...
And was also thinking about a fixed L-Pad for the highs? I suppose the answer to that would be to just EQ down the highs if they are too much?
Thanks for letting my kick the can around....
On second thought, you might be able to just put a switch on the input side of the crossovers that simply disconnects the inputs of the crossovers from each other. But, I have no idea whether the crossover circuits would alter the sound by just having their outputs connected to the speakers or not. If not, I think this would be the simplest solution.
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
- Rune Bivrin
- Posts: 521
- Joined: Tue Aug 19, 2008 5:42 pm
- Location: Stockholm, Sweden
Re: Passive Crossover questions
For any crossover steeper than 6dB/octave, you'll need to disconnect the drivers from the crossover. Otherwise, the amps will "see" the drivers in parallel with extra components, which may cause substantial problems.
In build order:
O12 with no tweeter.
3 x WedgeHorns.
2 x Jack 10 without tweeters.
2 x DR250.
2 x 16" T39
1 x Tuba 24
2 x SLA Pro (sort of...)
O12 with no tweeter.
3 x WedgeHorns.
2 x Jack 10 without tweeters.
2 x DR250.
2 x 16" T39
1 x Tuba 24
2 x SLA Pro (sort of...)
Re: Passive Crossover questions
Ahhh yes I didn’t think about components being parallel across the coil of the speakers.Rune Bivrin wrote: ↑Mon Sep 13, 2021 4:28 am For any crossover steeper than 6dB/octave, you'll need to disconnect the drivers from the crossover. Otherwise, the amps will "see" the drivers in parallel with extra components, which may cause substantial problems.
Thanks for the input guys!
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba