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Multi-Way Conventional loudspeakers with crossovers

1970's TL remake help
1970's TL remake help
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Old 11th April 2018, 10:38 AM   #31
webby is offline webby  United Kingdom
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Thanks Dave, I need to work with what I have if possible.
I have these inductors available;
0.25mH x 4
0.6mh x 2
1.5mH x 2
3.4mH x 2
6mH x 2
playing with a few online calculator, I came to this;
3rd Order (18 dB per Octave)
2100Hz, 6 Ohm tweeter
C1=8.42 F
C2=25.26 F
L1=0.34 mH I have already;
or
2900Hz
C1=6.1 F
C2=18.29 F
L1=0.25 mH I have already
I think I will start with the 2900Hz, does this sound reasonable?

Should be able to make up cap values.
Time to warm up the iron!
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Old 11th April 2018, 04:45 PM   #32
planet10 is offline planet10  Canada
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1970's TL remake help
On-line calculator will not likely be very accurate.

dave
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Old 11th April 2018, 08:22 PM   #33
webby is offline webby  United Kingdom
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Oh, I cobbled the 2900Hz values together. Not plugged them in yet.
What should I do to calculate the crossover?
Thanks
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Old 11th April 2018, 08:32 PM   #34
planet10 is offline planet10  Canada
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1970's TL remake help
To do it proper one measures and uses an XO sim application, but there is a long thread here on XO development with no tools.

dave
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Old 12th April 2018, 11:41 AM   #35
Borus is offline Borus  United States
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Default you can try this

Real world crossover being used today with same tweeter and 6.5 Vifa midbass in a small closed box sound was surprisingly good. Crossover at aprox 2700Hz
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Old 23rd April 2018, 04:05 PM   #36
webby is offline webby  United Kingdom
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Hi All,
Had a few issues getting them up and running.
Still need to spray the inside of theTL port as you can see, pleased with the baffle mod.

I setup the basic crossovers on the minidsp and tweeter, used the TC9's to check the amp outputs were putting out the right frequencies so that nothing was blown.
Turns out one of the Tweeter was faulty, I managed to re solder the fine wires that had broken, it worked!

My Initial observation is that the tweeter output will need padding down a bit.

So I'm ready to break out the UMIK and REW.
Some suggestions on what and how to measure would be useful?

Thanks
Ian
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