Heretic Loudspeaker A612 Clone
- Thread starter dualuxe
- Start date
In answer to A1008, I posted data to help others approach the original design, and at the same time I wanted to try and understand serial Xovers a bit more as I had never tried the idea before.
I am slowly building a box of approx. 80 litres along the shape of an old Tannoy Chatsworth sized cabinet and now have a different serial over i want to try and tune further once i have built the cabinet.
I imagine that Chris's post 82 would work as one of many possible solutions.
I am slowly building a box of approx. 80 litres along the shape of an old Tannoy Chatsworth sized cabinet and now have a different serial over i want to try and tune further once i have built the cabinet.
I imagine that Chris's post 82 would work as one of many possible solutions.
I think ? it looks more like this, without the resistor across the tweeter.
L-Pad on Series Crossover?
https://www.diyaudio.com/community/threads/l-pad-on-series-crossover.397411/
post# 5 AllenB
1.8 ohm x2 parallel = .9 ohms
https://www.solen.ca/en/products/so...-resistors-aoc1600g1r8-1_8ohm-16watt-resistor
L-Pad on Series Crossover?
https://www.diyaudio.com/community/threads/l-pad-on-series-crossover.397411/
post# 5 AllenB
1.8 ohm x2 parallel = .9 ohms
https://www.solen.ca/en/products/so...-resistors-aoc1600g1r8-1_8ohm-16watt-resistor
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This looks to be correct. from post #66.Is this it as traced out by our friend?
Count on the back: Left side bottom to top 1-6 ( #1-8.2uf, #2 -1.6 mH,#3-10 uf,#4-1.6mH,#5 Res,#6-Res.)
Right Side 7-12 top to bottom (#7-Res,#8-Res,#9-.62mH,#10-.62mH,#11-10uF,#12-8.2uf
post#71
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Just a thought regarding PCB images?
Look at component side image big inductor on LHS.
Now look at posted images of the underside, ie the soldered side. Note that the solder input terminals are not flipped they still align?
Question: shouldn't the larger L1 inductor be on the RHS now?
I am in the garage attempting cutting wood for cabinets today, so the cold may have addled my brain.
Look at component side image big inductor on LHS.
Now look at posted images of the underside, ie the soldered side. Note that the solder input terminals are not flipped they still align?
Question: shouldn't the larger L1 inductor be on the RHS now?
I am in the garage attempting cutting wood for cabinets today, so the cold may have addled my brain.
I was wondering about that, looks like he flipped the image so we could trace it easier.
If you look at the component side the tweeter terminals are on the bottom right. Amp +/- near the mounting hole.
The tweeter terminals are on the bottom right- flipped image.
The Zap straps Larger Coil on the left, Smaller Coil on the right.
Normal back & top pcb.
Flipped pcb image
from post #88 Try this & apply to the crossover on post #27 or #66
Backside flipped (image supplied), count on the back: Left side bottom to top components 1-6 ( #1-8.2uf, #2 -1.6 mH,#3-10 uf,#4-1.6mH,#5 Res,#6-Res.)
Right Side 7-12 top to bottom (#7-Res,#8-Res,#9-.62mH,#10-.62mH,#11-10uF,#12-8.2uf
Woofer - negative see post #65
If you look at the component side the tweeter terminals are on the bottom right. Amp +/- near the mounting hole.
The tweeter terminals are on the bottom right- flipped image.
The Zap straps Larger Coil on the left, Smaller Coil on the right.
Normal back & top pcb.
Flipped pcb image
from post #88 Try this & apply to the crossover on post #27 or #66
Backside flipped (image supplied), count on the back: Left side bottom to top components 1-6 ( #1-8.2uf, #2 -1.6 mH,#3-10 uf,#4-1.6mH,#5 Res,#6-Res.)
Right Side 7-12 top to bottom (#7-Res,#8-Res,#9-.62mH,#10-.62mH,#11-10uF,#12-8.2uf
Woofer - negative see post #65
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A1008, thanks for taking the time to get these photos of the crossover. Much appreciated!
POST # 89 Crossover
https://solen.ca/en/categories/inductors/products
Solen std 1.6mH diameter dcr- ohms
S201.6 20g 57mm .96
S181.6 18g 64mm .63
S161.6 16g 76mm .44
S141.6 14g 89mm .29
S121.6 12g 102mm .2
Mundorf vs Solen
post #70
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A1008, could you post the dimensions of the front port on your AD612? Thanks!
If you don’t want a significant peak in the midrange where the impedance skyrockets you don’t want to use a high output impedance amplifier.
The box size would also need the output impedance added to the Qt when simulating the box.
dave