I thought you guys might enjoy these. I made them as a gift for a friend who always wants to know how stuff works. š
Offset driver TL design done in Hornresp, physical design done in Fusion360. The layers were cut on our 80w laser. Alternating layers of 6mm ply and MDF. After gluing, I quickly ran the belt sander over them to end up with a bit of a steampunk look. Drivers are SB12PFCR-4 and Dayton TD20F-4. I used the foam for stuffing since it has very little weight for its volume. It looks a bit funky- one bit on one side and one bit on the other, but it is as calculated in Hornresp. Any more kills the LF and when I tried less, they sounded boxy.
The acrylic sides do vibrate very slightly at high volume, so Iāll readily admit that they are not perfect - but they do sound very very nice. By far the most expensive cabinets I have ever built!
#translam #tl #transmissionline
Ve
Offset driver TL design done in Hornresp, physical design done in Fusion360. The layers were cut on our 80w laser. Alternating layers of 6mm ply and MDF. After gluing, I quickly ran the belt sander over them to end up with a bit of a steampunk look. Drivers are SB12PFCR-4 and Dayton TD20F-4. I used the foam for stuffing since it has very little weight for its volume. It looks a bit funky- one bit on one side and one bit on the other, but it is as calculated in Hornresp. Any more kills the LF and when I tried less, they sounded boxy.
The acrylic sides do vibrate very slightly at high volume, so Iāll readily admit that they are not perfect - but they do sound very very nice. By far the most expensive cabinets I have ever built!
#translam #tl #transmissionline
Ve
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Wow.
There seems to be a lot of knowledge and skill put into them.
Plus interesting choice of build techniques and driver and crossover choices.
Out of interest what are your day to day speakers of choice?
There seems to be a lot of knowledge and skill put into them.
Plus interesting choice of build techniques and driver and crossover choices.
Out of interest what are your day to day speakers of choice?
Thanks Raymond - you missed āluckyā š
I have used that driver pairing successfully before, so it reduced the risk of the project turning into a disaster.
For a long time, I have been very happy with my Kef Q60s. I bought them as a youngster, working at a hi-fi store. But I have recently surprised myself with an experiment that blows the socks off the Kefs. Itās a TL bass with OB top. I might do a writeup on them at some stage.
I have used that driver pairing successfully before, so it reduced the risk of the project turning into a disaster.
For a long time, I have been very happy with my Kef Q60s. I bought them as a youngster, working at a hi-fi store. But I have recently surprised myself with an experiment that blows the socks off the Kefs. Itās a TL bass with OB top. I might do a writeup on them at some stage.
Topology wize look a lot like a BabyLab. Surprisingly, even at such a small size works.
Now the critique: Tranlam is such a wasteful method of building, especially when it can be more easily be done. Given that translam uses the material oin a direction not intended, your walls are likely not thick enuff. Nice holey braces thou, but you missed the opportunity to brace the driver. Are they centred in the box? They are the right direction for a normally built box but for a translam thou they arenāt all that useful, since they should go perpendiculkar to the slicesā¦ and that would interfere with the line.
dave
Now the critique: Tranlam is such a wasteful method of building, especially when it can be more easily be done. Given that translam uses the material oin a direction not intended, your walls are likely not thick enuff. Nice holey braces thou, but you missed the opportunity to brace the driver. Are they centred in the box? They are the right direction for a normally built box but for a translam thou they arenāt all that useful, since they should go perpendiculkar to the slicesā¦ and that would interfere with the line.
dave
@Dave
definitely not the most efficient way of building speakers, but this was more of an itch-scratch art project rather than a hard-core acoustic one. The thickness of the baffle is 30mm - way more than the 6mm acrylic on the sides! The holey brace is a full layer of MDF, in the middle of the stack, so it does support the driver at the top and bottom. I added it mostly to aid in aligning everything during assembly. Thatās a horror story I would prefer to forget!
definitely not the most efficient way of building speakers, but this was more of an itch-scratch art project rather than a hard-core acoustic one. The thickness of the baffle is 30mm - way more than the 6mm acrylic on the sides! The holey brace is a full layer of MDF, in the middle of the stack, so it does support the driver at the top and bottom. I added it mostly to aid in aligning everything during assembly. Thatās a horror story I would prefer to forget!
The series crossover is a bit weird and it doesnāt work with all driver pairings. But it works really well on these. For low frequencies, the coil has very low resistance and the capacitor has very high resistance, so the power goes to the woofer. At high frequency, the coil is high R and the cap is low R, so the power goes to the tweeter. Faster roll-off than a normal first order.
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