So while I wait for the goodies to arrive for the crossover, and work thru figuring out the L2 inductor value, I removed the front baffle and the speaker terminal for the cabinet to be duplicated.
Some pictures of the cabinet .
@planet10 Interesting to see that it's a birch ply over MDF and the back is MDF as well. Very well sealed, though you can see that the gasket wasn't secured well when the rear binding post/receptacle was installed originally.
(I'm also hoping that this thread puts some needed visibility and information on Tangent Acoustic since there's very little information out there on these speakers/company. )
Some pictures of the cabinet .
@planet10 Interesting to see that it's a birch ply over MDF and the back is MDF as well. Very well sealed, though you can see that the gasket wasn't secured well when the rear binding post/receptacle was installed originally.
(I'm also hoping that this thread puts some needed visibility and information on Tangent Acoustic since there's very little information out there on these speakers/company. )
Some additional progress updates. I was able to remove the inductors from the crossover and they measured different (no surprises, thank you all for guiding me).
The L1 was 0.58, L2 was 2mH and L3 was 0.34mH.
I ordered replacement inductors to complete the kit. So far the only regular cap that I am using is the 50uF/50V.
Other changes:
1) purchased a 4.4uF Cap instead of the 2x 2.2uF (Should this make a difference?)
2) Still running the 1uF + 1uF configuration, but will look to upgrade them to a 2uF.
3) Slightly concerned about running lower DCR inductors (air core) vs the original ferrite core, but I am assuming it should have minimal impact.
Photo of the x-over with the inductors removed.
The L1 was 0.58, L2 was 2mH and L3 was 0.34mH.
I ordered replacement inductors to complete the kit. So far the only regular cap that I am using is the 50uF/50V.
Other changes:
1) purchased a 4.4uF Cap instead of the 2x 2.2uF (Should this make a difference?)
2) Still running the 1uF + 1uF configuration, but will look to upgrade them to a 2uF.
3) Slightly concerned about running lower DCR inductors (air core) vs the original ferrite core, but I am assuming it should have minimal impact.
Photo of the x-over with the inductors removed.
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I have a follow up Q to the experienced crowd here. I see 2 caps in parallel at the top and 2 more at the bottom. Is this purely a parts availability/cost situation or dividing the capacitance across 2 Capacitors actually help the sound?
I see 1uF + 1uF in parallel at the top and correspondingly 2.2+2.2 uF at the bottom. Both are on the Tweeter/HF
Should I be good to replace them with 1x 2uF and 1x 4.4uF?
I see 1uF + 1uF in parallel at the top and correspondingly 2.2+2.2 uF at the bottom. Both are on the Tweeter/HF
Should I be good to replace them with 1x 2uF and 1x 4.4uF?
Thanks dave /@planet10 . Yep. You can actually make out the reading on the side of the green caps (2.2+/- 20%).
Other crossovers that I looked at for the T27 (Corelli, TM2, Chorale) use 5uF in Series along with a 2uF in series (the 2uF matches the 1+1uF here, albeit it's later in the network, while earlier here).
The TM2 3-way uses a 1uf+2.2uF in parallel, in series with a 2.2uf+2.2uF in parallel. attaching images of what I found on the internet.
The Chorale uses 2 5uF in series with an inductor in parallel with the tweeter.
Other crossovers that I looked at for the T27 (Corelli, TM2, Chorale) use 5uF in Series along with a 2uF in series (the 2uF matches the 1+1uF here, albeit it's later in the network, while earlier here).
The TM2 3-way uses a 1uf+2.2uF in parallel, in series with a 2.2uf+2.2uF in parallel. attaching images of what I found on the internet.
The Chorale uses 2 5uF in series with an inductor in parallel with the tweeter.
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