98 SNAKE EATER Posted August 27, 2019 Report Posted August 27, 2019 Looking at a JBL Stadium sub that has a switchable impedance from 2 to 4ohm's How exactly do they do this? Are they adding another vc or just using a switch to bypass one of two vc's?
slowfkncar Posted August 27, 2019 Report Posted August 27, 2019 Thats a trip, probably a resistor but haven't got a clue
ToNasty Posted August 27, 2019 Report Posted August 27, 2019 I think you mean from 4ohm to 1 ohm or 8 ohm to 2 ohm. Audiofrog GB subs have this ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers
paidnfull Posted August 27, 2019 Report Posted August 27, 2019 13 minutes ago, ToNasty said: I think you mean from 4ohm to 1 ohm or 8 ohm to 2 ohm. Audiofrog GB subs have this He probably means 4 to 2. Infinity shallow subs have a switch that goes 4 to 2 also. Same company, probably same technology. I don't know how they do it and agree with you that if they were simply changing coils from series to parallel, your numbers would make more sense.
ToNasty Posted August 27, 2019 Report Posted August 27, 2019 12 minutes ago, paidnfull said: He probably means 4 to 2. Infinity shallow subs have a switch that goes 4 to 2 also. Same company, probably same technology. I don't know how they do it and agree with you that if they were simply changing coils from series to parallel, your numbers would make more sense. If you have a d2 ohm sub. It can only be wired to 1 ohm or 4 ohm. Or a d4 sub can be wired to 8 ohm or 2 ohm. ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers
ToNasty Posted August 27, 2019 Report Posted August 27, 2019 https://www.audiofrog.com/gb10d4-10-250-mm-audiophile-grade-automotive-subwoofer/ ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers
98 SNAKE EATER Posted August 27, 2019 Author Report Posted August 27, 2019 It's 2 or 4 https://www.jbl.com/car-subwoofers/Stadium+1224.html?dwvar_Stadium 1224_color=Black-GLOBAL- Makes me think it's a 4ohm dvc wired in parallel at 2 ohm with a switch that just bypasses the second coil when you wanna run 4ohm, but that's just weird
AaronT Posted August 27, 2019 Report Posted August 27, 2019 Yeah that's fucking tarded If that is the case the wattage gotta be false,
ToNasty Posted August 28, 2019 Report Posted August 28, 2019 3 hours ago, 98 SNAKE EATER said: It's 2 or 4 https://www.jbl.com/car-subwoofers/Stadium+1224.html?dwvar_Stadium 1224_color=Black-GLOBAL- Makes me think it's a 4ohm dvc wired in parallel at 2 ohm with a switch that just bypasses the second coil when you wanna run 4ohm, but that's just weird That makes no sense ***Super Sellers List***http://www.stevemeadedesigns.com/board/topic/25829-super-sellers-buyers
SnowDrifter Posted August 28, 2019 Report Posted August 28, 2019 Is it possible it's a 4 ohm driver with a transformer? ~~~~~~~~SAY NO TO PHOTOBUCKET~~~~~~~~ Snow's DD-1 tracks here: https://www.stevemeadedesigns.com/board/topic/167433-snows-dd-1-tracks/ My take on OFC vs CCA: https://www.stevemeadedesigns.com/board/topic/110381-things-that-piss-you-off-in-the-car-audio-world/?do=findComment&comment=2461444
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