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Citronic cx 1000br 'push-pull' 2 X 18" subs |
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imageoven 
Old Croc 
Joined: 28 March 2007 Location: Scotland Status: Offline Points: 2186 |
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 Posted: 24 August 2018 at 3:14pm |
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have you just tried them in one location? If so you could just be getting room cancelation effects.
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Keep pushing on, things are gonna get better.
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hectorpatch
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Joined: 02 March 2005 Location: London Status: Offline Points: 34 |
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Posted: 24 August 2018 at 4:11pm |
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Yes, maybe room cancellation effect... the push - pull speakers I have had before were sensitive to room position...prob one of the reasons they never caught on really..access to a venue next week so will get em in for a second try out...
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2db,or not,2db..Is that the question ...
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bob4
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Joined: 29 February 2004 Location: Finland/Germany Status: Offline Points: 1843 |
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Posted: 24 August 2018 at 5:01pm |
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The way you describe it the two transducers are definitely out of phase! They should both move inwrds and outwards (as in towards or away from the enclosed airvolume inside the cab) simultaneously. Edit: So it is either an internal wiring fault in the cab, or the transducers have differing polarity. Maybe a bad/non original recone? Edited by bob4 - 24 August 2018 at 5:03pm |
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nickyburnell
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Joined: 06 February 2005 Status: Offline Points: 4410 |
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Posted: 24 August 2018 at 6:25pm |
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No he tested that, one is out of phase as it should be.
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It's everything, not everythink!
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bob4
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Posted: 24 August 2018 at 7:45pm |
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Yes, he tested the wiring. But the way he described cone movement, the cones are working against each other (one pushing into the box, the other doing the opposite). |
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Robbo
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Joined: 05 December 2005 Location: Shropshire Status: Online Points: 4226 |
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Posted: 24 August 2018 at 8:02pm |
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The cones are working with each other as they are in a Push/Pull design cabinet so the have to be wired out of phase with one another.
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nickyburnell
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Posted: 24 August 2018 at 8:04pm |
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Ooer, that's not how I read it. But anyhow, to confirm one driver should be out of phase (this might be done at plug) so both push to front of cab. I THINK the driver mounted furthest back should be the out of phase one??
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It's everything, not everythink!
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bob4
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Posted: 25 August 2018 at 12:40pm |
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Discussions about push pull designs always do peoples heads in.....
  The inverted cone should obviously be connected in inverse polarity to the non-inverted cone, so that it physically moves in the sme direction as the non-inverted one -> acojstic polarity matches. The fact that the electrical connection seems to be correct is one thing. There is a possibility that the cones are acoustically working in opposite polarity despite correct wiring. If the two drivers are from different batches, or one has been faultily reconed, they might have diverging polarity for identical electric input. |
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bob4
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Posted: 25 August 2018 at 12:58pm |
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 I did a picture search, is this the sub being discussed? |
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bob4
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Posted: 25 August 2018 at 1:00pm |
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IN and OUT relative to what? Your statement is unclear. |
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hectorpatch
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Joined: 02 March 2005 Location: London Status: Offline Points: 34 |
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Posted: 25 August 2018 at 1:20pm |
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one speaker is facing INTO the cab.... which is wired INVERTED, the other speaker is facing OUT of the cab and wired ‘normal’
Not sure if I can post a picture on here... will try later, have a look online an Citronic cx1000br... image... and that will show the configuration... thanks..
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2db,or not,2db..Is that the question ...
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hectorpatch
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Posted: 25 August 2018 at 1:21pm |
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Yes! That’s the picture of the sub in question..
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2db,or not,2db..Is that the question ...
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hectorpatch wrote: