L3 and L4 Values on RTA 12 x-over
Michael8it
Posts: 192
I need some help identifying the values of L3 and L4 in the Original RTA 12 Schematic.
I have identified all of the other components and their values, but as the schematic shows, there was originally a second page to this with the component values, and that page is missing. I don't have the test equipment to check these, so I am hoping someone on the forum knows the answer.
Based on the design of the LF side of the x-over, I would assume the values are the same as the 12B or 12C for these components, but the handwriting on the schematic suggests otherwise. The handwritten version says .58 for L3 and 0.171 for L4. The same two components for the 12B are 1.55 for L3 and 3.2 for L4. Just looking at them, I find it really hard to believe that L3, which is the large inductor under the pc board, has a value of 0.58. I think it is more likely that L4 (on top of the board) is .58 - it would be the same value of L1. L4 is still the mystery component.
If anyone can help with this - I have a rewritten schematic for this that I can submit to replace the existing one, but I need these to component values positively identified.
Thanks,
I have identified all of the other components and their values, but as the schematic shows, there was originally a second page to this with the component values, and that page is missing. I don't have the test equipment to check these, so I am hoping someone on the forum knows the answer.
Based on the design of the LF side of the x-over, I would assume the values are the same as the 12B or 12C for these components, but the handwriting on the schematic suggests otherwise. The handwritten version says .58 for L3 and 0.171 for L4. The same two components for the 12B are 1.55 for L3 and 3.2 for L4. Just looking at them, I find it really hard to believe that L3, which is the large inductor under the pc board, has a value of 0.58. I think it is more likely that L4 (on top of the board) is .58 - it would be the same value of L1. L4 is still the mystery component.
If anyone can help with this - I have a rewritten schematic for this that I can submit to replace the existing one, but I need these to component values positively identified.
Thanks,
Carver C-1, M-500 MKII, Yamaha HTR-5835, Polk RTA 12BM's (M-for mod'd).
Post edited by Michael8it on
Comments
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Your bets bet is to pull the parts out take them to a T.V. shop that has a Lcr meter and have them check them.Absolute corruption empowers absolutely.
Lg 55LW5600 TV
Onkyo PR-SC 5508
Legacy Audio Focus SE
Legacy Audio Silverscreen HD center
Polk F/X500i Rears
Parasound HCA-3500
Sunfire Grand Cinema
Behringer iNUKE NU6000DSP
Pair of CraigSUB SS-18.1
