High output 8" Tapped horn - Page 2 - AVS Forum | Home Theater Discussions And Reviews
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post #31 of 56 Old 01-10-2011, 02:45 PM
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I think this sub will be my next project. I already have the driver and amp!
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post #32 of 56 Old 01-10-2011, 02:56 PM - Thread Starter
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That will work out perfect for you then. Feel free to make the internal panels 9 7/8" wide in order to avoid having to modify the amp. This will gain an additional db or two.
Make sure to turn the VR603 pot to reduce the spectral tilt in the amp to flatten out the response of the amp.
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post #33 of 56 Old 01-11-2011, 07:07 AM
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Quote:
Originally Posted by tsloms View Post

That will work out perfect for you then. Feel free to make the internal panels 9 7/8" wide in order to avoid having to modify the amp. This will gain an additional db or two.
Make sure to turn the VR603 pot to reduce the spectral tilt in the amp to flatten out the response of the amp.

VR603 is the pot *IN* the amp, right? If I go with wider internal panels, will I need bracing? I'd like to avoid braces altogether to simplify the build.
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post #34 of 56 Old 01-11-2011, 07:56 AM
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Dave if you want to drive out to buffalo and listen to my setup sometime you are more then welcome to. I built the design per tsolms spec but I haven't put the amp in sub yet, its just on the outside of it.


I really need to post a picture of the completed setup but like someone else said in the thread its a really good TV room sub.

And here it is placed
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post #35 of 56 Old 01-12-2011, 02:08 PM - Thread Starter
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Quote:
Originally Posted by dykz34 View Post

VR603 is the pot *IN* the amp, right? If I go with wider internal panels, will I need bracing? I'd like to avoid braces altogether to simplify the build.

Yes the VR603 is the pot inside the amp.
As for the bracing or lack there of this is for sure the limit to not using braces but I think that if you were to use good quality wood such as arauco or real birch that you should be alright. Mdf would absolutely need bracing. I think that you will be fine without additional braces. That being said some small internal bracing would guarantee the rigidity of the panels.
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post #36 of 56 Old 01-21-2011, 01:57 AM
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Quote:
Originally Posted by tsloms View Post

That will work out perfect for you then. Feel free to make the internal panels 9 7/8" wide in order to avoid having to modify the amp. This will gain an additional db or two.
Make sure to turn the VR603 pot to reduce the spectral tilt in the amp to flatten out the response of the amp.

Amps arrived today! I opened one up and found the VR603 pot (labeled with a 223 on it). Do I turn it clockwise or counterclockwise to reduce the spectral tilt?
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post #37 of 56 Old 01-21-2011, 05:10 AM - Thread Starter
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Originally Posted by Maxjr View Post

Amps arrived today! I opened one up and found the VR603 pot (labeled with a 223 on it). Do I turn it clockwise or counterclockwise to reduce the spectral tilt?

Make sure that you turn it full counterclockwise. That will help to flatten the response of the amp.
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post #38 of 56 Old 01-21-2011, 06:19 AM
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Looks like I found my garage subwoofers. A pair will be perfect.

Your thoughts.......
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post #39 of 56 Old 01-21-2011, 12:46 PM - Thread Starter
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KG, you will love a pair of these corner loaded if possible. They will do a fine job shaking the garage.
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post #40 of 56 Old 01-23-2011, 02:01 AM
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Awesome! Thanks, Tad
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post #41 of 56 Old 01-23-2011, 06:21 AM
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Cool project!

This would make a great computer sub too!

______________________________________________
Joe = LFE Addict
Joe's LOWARHORN build
Dual LMS-5400 Ultra Endtables build
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post #42 of 56 Old 05-28-2013, 02:45 PM
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Pulling up an old thread here! I have a question about a small modification to this box. I'm not going to installing a plate amp into the box. Does anyone think by removing that area and moving the port opening down would make much difference? (keeping the opening the same size) I'm going to use the same MCM driver. My son wants a little bump and I'm anxiously wanting to build a tap horn. Also considering the Tall Auto Tuba from Bill.
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post #43 of 56 Old 05-28-2013, 05:55 PM - Thread Starter
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Originally Posted by Michael Mitten View Post

Pulling up an old thread here! I have a question about a small modification to this box. I'm not going to installing a plate amp into the box. Does anyone think by removing that area and moving the port opening down would make much difference? (keeping the opening the same size) I'm going to use the same MCM driver. My son wants a little bump and I'm anxiously wanting to build a tap horn. Also considering the Tall Auto Tuba from Bill.

By removing the plate amp and moving the port down will make the horn slightly longer and allow it to play perhaps 1-2hz lower. The change will be minimal just so long as the opening area is kept the same.

This horn will have similar output to the Auto Tuba but will play slightly lower in a similar sized package. Honestly you won't be disappointed with either horn. They will give surprising output for the 8" driver. Make sure that you run the high pass filter though to protect the driver from overexcursion.
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post #44 of 56 Old 05-28-2013, 06:14 PM
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Quote:
Originally Posted by tsloms View Post

By removing the plate amp and moving the port down will make the horn slightly longer and allow it to play perhaps 1-2hz lower. The change will be minimal just so long as the opening area is kept the same.

This horn will have similar output to the Auto Tuba but will play slightly lower in a similar sized package. Honestly you won't be disappointed with either horn. They will give surprising output for the 8" driver. Make sure that you run the high pass filter though to protect the driver from overexcursion.
Very cool. I've been doing A LOT of reading on here. I was tempted to snag a couple of the Anarchy 6 1/2"s since Kevin is closing shop, but this design will do my son fine. I haven't shown him Bill's stuff yet. I could see him doing one of those for the sake of having a table to use. We'll see.

I wish amps would say if they have a high pass or not. I was thinking of going with this one, because he will be using my old receiver for a while. He will need the high level input so he can use the crossover on the plate amp. Dayton SA100 Thoughts?
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post #45 of 56 Old 05-28-2013, 08:00 PM - Thread Starter
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I'm not familiar with that amp so I can't say for sure whether it has a high pass or not. I would imagine that it does. Hopefully others can chime in.
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post #46 of 56 Old 05-29-2013, 10:28 AM
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Someone did answer that question on the PE page for that amp. They said 17 hz.
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post #47 of 56 Old 05-29-2013, 04:09 PM
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Someone did answer that question on the PE page for that amp. They said 17 hz.
Thanks! While a little low for this design, it shouldn't be too bad. Besides, it's a $30 driver, not $300.
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post #48 of 56 Old 05-29-2013, 07:33 PM - Thread Starter
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That high pass is a touch high but with the slightly extended horn and the limited power from the amp you should be just fine!
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post #49 of 56 Old 06-17-2013, 06:14 AM
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Nice build!
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post #50 of 56 Old 08-16-2015, 06:11 PM
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Hey, so I love your write up on that subwoofer and am ordering the parts here in the next week or so. I'm looking to get the Dayton SA100 Plate amplifier (Part Number 300-802). I am worried about over-excursion with the lower frequencies though. Do you think I could get away with this? Or will I need to install a High pass filter as well...Thanks a bunch for everything.

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post #51 of 56 Old 08-17-2015, 11:47 AM
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Originally Posted by iHusk View Post
Hey, so I love your write up on that subwoofer and am ordering the parts here in the next week or so. I'm looking to get the Dayton SA100 Plate amplifier (Part Number 300-802). I am worried about over-excursion with the lower frequencies though. Do you think I could get away with this? Or will I need to install a High pass filter as well...Thanks a bunch for everything.

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Without a doubt you will want to high pass. Most vented enclosures will require a HP filter in the HT environment esp ones tuned that high. There is so much content under the tuning point in the HT world that can and will destroy your woofer if you're not extremely careful.
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post #52 of 56 Old 08-17-2015, 12:26 PM - Thread Starter
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Hey, so I love your write up on that subwoofer and am ordering the parts here in the next week or so. I'm looking to get the Dayton SA100 Plate amplifier (Part Number 300-802). I am worried about over-excursion with the lower frequencies though. Do you think I could get away with this? Or will I need to install a High pass filter as well...Thanks a bunch for everything.

Sorry about the bumb...I can't PM (
Without a doubt tapped horns are rather susceptible to unloading below the tuning frequency. Regarding your amp I did a quick Google search and found that someone on another forum tested this amp and found that it has about a 24db/octave high pass starting around 30hz. I wouldn't use it for a sealed sub but this amp should match up quite well with this sub horn. You should be rather well protected for overexcursion.
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post #53 of 56 Old 08-18-2015, 09:56 PM
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Originally Posted by tsloms View Post
Without a doubt tapped horns are rather susceptible to unloading below the tuning frequency. Regarding your amp I did a quick Google search and found that someone on another forum tested this amp and found that it has about a 24db/octave high pass starting around 30hz. I wouldn't use it for a sealed sub but this amp should match up quite well with this sub horn. You should be rather well protected for overexcursion.
So I could pretty much install this with no filters except what is already on the amp? If so great, this just became a whole lot easier!
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post #54 of 56 Old 08-19-2015, 09:30 AM - Thread Starter
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So I could pretty much install this with no filters except what is already on the amp? If so great, this just became a whole lot easier!
Yes that is correct when used with that amp. Of course if used with an amp that had no high pass the driver would exceed its excursion pretty easily below 30hz with minimal power.
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post #55 of 56 Old Today, 04:34 PM
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Was a cut list ever put together for this build, seems like a good build for a bedroom/spare room when bored. Any other drivers work in this enclosure?
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post #56 of 56 Old Today, 05:01 PM - Thread Starter
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Was a cut list ever put together for this build, seems like a good build for a bedroom/spare room when bored. Any other drivers work in this enclosure?


There is also the Tang Band W8-740P woofer which is a higher quality and excursion driver that will give slightly more output. I do have files that were made up in Cutlist which is a freeware program for cultists. Shoot me a PM with your email.
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