I already have the 6" woofers on their way.That's fine. Your design/build may well satisfy your needs. I just wanted to present an alternative.
😉 If you are interested in the Sunflowers, your six inchers can always be used for the surround/back speakers I bet you'll do someday.😀
😉 If you are interested in the Sunflowers, your six inchers can always be used for the surround/back speakers I bet you'll do someday.😀
That's not a bad idea! My main concern is if the amp I am proposing is going to be enough for the design I have shown.
I also wonder if I couldn't recreat the sunflowers with one size larger drivers......6" woofers and 10" subs....or is that just a little on the silly side. I understand it's a proven design, I'm just trying to make something unique to myself.
I also wonder if I couldn't recreat the sunflowers with one size larger drivers......6" woofers and 10" subs....or is that just a little on the silly side. I understand it's a proven design, I'm just trying to make something unique to myself.
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Don't know. Paul is easy to talk to so give him a shout on the site or use undefinition1@gmail.com He usually has something new in the works.
BTW, the 8" drivers in his design will rattle the coffee cups three rooms away in my house. Good design can sometimes trump size in speakers. 🙂
BTW, the 8" drivers in his design will rattle the coffee cups three rooms away in my house. Good design can sometimes trump size in speakers. 🙂
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I'm going to go ahead and get the 300va 25-0-25 toroid coming this way and see if I can't get another kit from the same seller. This should leave me some different options with my setup.
While I wait for the 2 week shipment of the first half of my order I will try and teach myself how to use WinISD......could be a lost cause but, it's worth a shot!
When this is all said and done there will be a video of my results. Hopefully I can show what an average person with very little electrical knowledge can achieve with help from around the world
When this is all said and done there will be a video of my results. Hopefully I can show what an average person with very little electrical knowledge can achieve with help from around the world
Does anyone have any experience with these?? is it worth it?can i build my own? should I not even bother?
Audio Input Selector Relay Module Board, 4 L/R to 1 L/R, Japan TAKAMISAWA Relays | eBay
In the meantime I might start on these. This is a very rough draft, It's to get a general idea of the finished product....I'll put full details in the multiway section
Audio Input Selector Relay Module Board, 4 L/R to 1 L/R, Japan TAKAMISAWA Relays | eBay
In the meantime I might start on these. This is a very rough draft, It's to get a general idea of the finished product....I'll put full details in the multiway section
Attachments
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Sounds like your having fun and learning about the vast number of choices available. Remember you are on the chip-amp forum and you probably will get better answers on speakers in threads dedicated to that topic or even here:Techtalk Speaker Building, Audio, Video, and Electronics Customer Discussion Forum From Parts-Express.com - Powered by vBulletin
i wasn't really looking for any info on the speakers....just wanted to show what I was up to in the meantime
Yeah I'm learning quite a bit and having a blast.
Yeah I'm learning quite a bit and having a blast.
Copper is fantastic for heat dissipation.
Only silver is better.
Yes, copper is heavier and more expensive, but in return, it is fantastic. (well worth repeating myself).
I see difficulties with these proposals.
Bridging a pair of amps demands very high current from the amplifiers.
Chipamps in general don't have high current capability.
Bridging chipamps into a 4ohm speaker exacerbates all that is poor in a chipamp.
Expect a BPA300 (3pr of chips) to struggle to power a 4ohm speaker from a 25+25Vac transformer. You may have to consider going to 4pairs or maybe 5pairs of chips for a single channel 4ohm bass speaker.
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Thank you for the info. I'll head on over to the subwoofer forum and see if I can find something I like.
So if the LM3886 isn't the correct chip for the job, am I stuck using a plate amp or is there another route???
.......or should I be asking this question somewheres else?
.......or should I be asking this question somewheres else?
Great to see your progress!
I have built the exact same XY kit a few months ago.
I would suggest to replace the 1uF "Wima" input capacitors with 2.2-3.3uF. I was quite unhappy with low end response before the change.
I have built the exact same XY kit a few months ago.
I would suggest to replace the 1uF "Wima" input capacitors with 2.2-3.3uF. I was quite unhappy with low end response before the change.
Thanks! I'll try the capacitor swap tonight. I was also unhappy with the low end on the few test runs I have done. I'll run it again when I get the proper transformer in.😉
Would you happen to have any photos of the completed amp?
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I only found a photo of the unfinished amp, it also still has the wima input caps. The 2.2uF radials were mounted on the right edge of the PCB.
I was concerned about heat sinking, but the heat sinks barely get warm.
Top of enclosure.
I was concerned about heat sinking, but the heat sinks barely get warm.
Top of enclosure.
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Talk about room to grow! from what I can see it looks really good. I especially like the fit and finish of the heat sinks to the lid. Were there any other little tweaks you had to do to the boards or power supply?
Going back to the transformer.....If I run both kits off of one transformer would it split the va between them? Let's say it's a 400va twin secondaries, I run it through 2 identical power supplies, would that put 200va to each psb? or am I overthinking this?
Basically, yes.
It would not "put" 200va to one particular amp, it will just "limit" the total current drawn by all amps to 400va.
If it is an AnTek, they claim you can draw more then the stated VA from them. Maybe up to %20?
So your 400VA could actually handle closer to 480VA without issue.
I don't know that you would actually use two separate rectifiers, though you could have separate filter and decoupling units.
It would not "put" 200va to one particular amp, it will just "limit" the total current drawn by all amps to 400va.
If it is an AnTek, they claim you can draw more then the stated VA from them. Maybe up to %20?
So your 400VA could actually handle closer to 480VA without issue.
I don't know that you would actually use two separate rectifiers, though you could have separate filter and decoupling units.
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