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Multi-Way Conventional loudspeakers with crossovers

New crossover for my current speakers
New crossover for my current speakers
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Old 4th October 2018, 02:03 PM   #121
EarlK is offline EarlK  Canada
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Hi Niklas,

Yes, layout your components ( and wiring ) according to this picture you created.

New crossover for my current speakers-lopass_layout_2nr5gun-jpg

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File Type: jpg LoPass_layout_2Nr5GUn.jpg (14.9 KB, 75 views)
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Old 4th October 2018, 06:16 PM   #122
DoctorAcoustic is offline DoctorAcoustic
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Yes, the lower diagram is equivalent to the upper diagram and is more closely related to the physical layout.
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Old 10th October 2018, 12:20 PM   #123
Rullknufs is offline Rullknufs  Sweden
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New crossover for my current speakers
Excellent, then I think I found the missing piece of the puzzle

Salvaging the old components will take some work (and tools) so I'll leave that for a day I can go to the makerspace. It's open on Wednesday evenings and I'm working tonight and on next Wednesday but I'll probably do it on Wednesday in two weeks from now.

Are cable ties enough to keep the parts on the board? Should I use some hot glue as well?

Also, I was wondering about the power handling of the crossover. I'll only be using one single resistor and it's rated at 10W. I know that the crossover will handle more than 10W because not all of that is converted into heat in the resistor, but how much will it actually be able to handle? There's one ~1.8ohm resistor in the tweeter circuit and I'm not too worried about that, but wont the 2.7ohm resistor in the woofer circuit get quite a lot juice running through it when play loud/bass heavy music?
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Old 10th October 2018, 11:44 PM   #124
EarlK is offline EarlK  Canada
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Niklas,

I'm occupied till the week-end.

You'll need to research answers to some of those questions via Google.

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Old 13th October 2018, 01:47 PM   #125
EarlK is offline EarlK  Canada
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Regarding the watts rating of resistors in a crossover;

One solution ( already mentioned ) is to keep the crossovers external ( permanently or at least till you know you're satisfied with their performance ) and simply monitor the heat generated during a loud listening session.

A simple touch test ( or visual inspection ) will let you know if a resistor needs to be up-graded to a higher wattage type.

The fact that you live in an apartment means I think the wattage ratings of your resistors should be more than sufficient.
IOW; I believe your neighbours will "burn-out + go "charcoal" before your 11 watt resistors burn up.


Mounting?
Tie-wraps and a tiny bit of hot-glue (or heat-rated glue-sealant ) should be all that's required to keep components mounted.

Here's a neatly done crossover from DIYSG;

New crossover for my current speakers-htm_12_crossover-jpg

- Note the quite sparing use of a black glue (?) or sealant (?)

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Old 13th October 2018, 08:35 PM   #126
Rullknufs is offline Rullknufs  Sweden
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New crossover for my current speakers
Thanks for you reply, Earl. The crossover will be external in the beginning for monitoring and because I don't want to go through the effort to mount them before I know that they're great. Do these resistors fail open or closed?
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Old 14th October 2018, 11:24 AM   #127
EarlK is offline EarlK  Canada
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Quote:
Do these resistors fail open or closed?
Resistors generally fail "open".

More complete info is obtained from Google by asking How Do Components Fail?

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