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Forum: DIY Speakers and Subs   04-16-2017, 08:27 AM
Replies: 12
Views: 409
Posted By diy speaker guy
It's fine. The 10x vas rule is just an...

It's fine. The 10x vas rule is just an approximation of infinite - it's big enough so that driver qts will almost equal the sealed box qtc and the box has very little impact on what the driver is...
Forum: DIY Speakers and Subs   04-07-2017, 05:13 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
What are you talking about? Every company in...

What are you talking about? Every company in this market niche is selling similar products at similar prices, including SI and Mach 5. The only reason I mentioned the original SI 24 pricing was to...
Forum: DIY Speakers and Subs   04-06-2017, 11:38 AM
Replies: 489
Views: 21,527
Posted By diy speaker guy
There's never a dull moment in a BTH thread I...

There's never a dull moment in a BTH thread I guess.

I was just going to go ahead and ignore SI's comment but it seems to have pushed a few buttons and his post got a lot of "likes" so I'll...
Forum: DIY Speakers and Subs   03-31-2017, 11:34 AM
Replies: 489
Views: 21,527
Posted By diy speaker guy
What do you want to know? I'll tell you a...

What do you want to know?

I'll tell you a bit now but I don't have a lot of time to get into the details.

Here's a couple of quotes from Ricci's write up about the Rockford.



And we've...
Forum: DIY Speakers and Subs   03-29-2017, 08:18 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
Yeah absolutely. I want to do some analysis...

Yeah absolutely. I want to do some analysis first on the Rockford driver vs a few other similar models measured by data-bass, mainly focusing on inductance management. I also want to do a few coil...
Forum: DIY Speakers and Subs   03-29-2017, 08:05 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
There's a lot of risk involved so a reasonable...

There's a lot of risk involved so a reasonable markup is justified. Ask Kevin Haskins about that. A single bad batch can potentially wipe out a previously very successful small/medium sized...
Forum: DIY Speakers and Subs   03-28-2017, 07:39 AM
Replies: 489
Views: 21,527
Posted By diy speaker guy
Usually the way that works is that you pay for...

Usually the way that works is that you pay for the sample up front and for the shipping. You inspect the product. Then when you make your minimum order of say 50 or 500 units then they subtract the...
Forum: DIY Speakers and Subs   03-27-2017, 10:18 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
You sure about that? BTH is getting a 176 pound...

You sure about that? BTH is getting a 176 pound 24 inch driver for $254. Here's another ad showing just how low the price on these big drivers can be. ...
Forum: DIY Speakers and Subs   03-27-2017, 08:43 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
I know what you meant, I was just outlining a few...

I know what you meant, I was just outlining a few of the concerns. And personally I would want a more advanced motor if possible. Clearly Ricci's tests show the Rockford motor and coil design is...
Forum: DIY Speakers and Subs   03-27-2017, 08:34 PM
Replies: 23
Views: 619
Posted By diy speaker guy
I don't know if he's still advertising but there...

I don't know if he's still advertising but there used to be a bunch of ads. I collected a few links but they are all dead now.
Forum: DIY Speakers and Subs   03-27-2017, 06:25 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
While on the subject of mixing and matching...

While on the subject of mixing and matching parts, this is what I would like to see someone offer for sale. A large format true IB driver. Mostly because I'm cheap, and these could be very...
Forum: DIY Speakers and Subs   03-27-2017, 05:42 PM
Replies: 489
Views: 21,527
Posted By diy speaker guy
From the pictures I've seen Mach 5 makes their...

From the pictures I've seen Mach 5 makes their own motors and coils. I don't know about Fi or TC. SI puts their premium products together in house but I don't think they make the motors (but...
Forum: DIY Speakers and Subs   03-27-2017, 04:36 PM
Replies: 23
Views: 619
Posted By diy speaker guy
It doesn't take time to post a simple diagram,...

It doesn't take time to post a simple diagram, maybe two minutes.

You've openly said on several forums that the concept works and works well. You've also had this type of sealed/ported concept...
Forum: DIY Speakers and Subs   03-27-2017, 04:23 PM
Replies: 23
Views: 619
Posted By diy speaker guy
Fixed. You are welcome but please try to use the...

Fixed. You are welcome but please try to use the proper terminology.
Forum: DIY Speakers and Subs   03-27-2017, 02:53 PM
Replies: 23
Views: 619
Posted By diy speaker guy
Thanks for adding this. Here you admit that...

Thanks for adding this.

Here you admit that this IS a "sealed/ported" design. And you've clearly shown a DBR in your pictures of "Bass Build Up C".

Yet you continue with the condescending...
Forum: DIY Speakers and Subs   03-27-2017, 02:49 PM
Replies: 23
Views: 619
Posted By diy speaker guy
If that's not your sealed/vented concept then...

If that's not your sealed/vented concept then post a picture.
Forum: DIY Speakers and Subs   03-27-2017, 02:13 PM
Replies: 23
Views: 619
Posted By diy speaker guy
It's very hard to make the enclosure shapes...

It's very hard to make the enclosure shapes UpperCut prefers with normal construction methods. Translam makes it a lot easier.

Of course there's no reason at all (other than aesthetics) to make...
Forum: DIY Speakers and Subs   03-27-2017, 12:12 PM
Replies: 62
Views: 1,674
Posted By diy speaker guy
Done. Proof that you ISCT "sealed/vented" is...

Done. Proof that you ISCT "sealed/vented" is actually a translam DBR is right here -...
Forum: DIY Speakers and Subs   03-27-2017, 12:01 PM
Replies: 23
Views: 619
Posted By diy speaker guy
Thank you so much for this. After 2 years or so...

Thank you so much for this. After 2 years or so of posting you've finally posted what appears to be a clear picture of the internals of your "sealed/vented" concept.
...
Forum: DIY Speakers and Subs   03-22-2017, 05:30 PM
Replies: 62
Views: 1,674
Posted By diy speaker guy
The rabbit hole goes deep. The following is an...

The rabbit hole goes deep. The following is an earlier post of mine copied and pasted from one of the previous ISCT threads.



Doing a quick search for ISCT, UpperCut Audio, Roland E W Mucke...
Forum: DIY Speakers and Subs   03-21-2017, 11:14 PM
Replies: 62
Views: 1,674
Posted By diy speaker guy
I do know it's some type of bandpass made with a...

I do know it's some type of bandpass made with a translam construction.



There is audio theory, which for the most part is not incorrect. There is also some room for art. But assuming you are...
Forum: DIY Speakers and Subs   03-21-2017, 09:51 PM
Replies: 62
Views: 1,674
Posted By diy speaker guy
I would love to but the only information on your...

I would love to but the only information on your speakers is what you've posted on several forums (hundreds of posts and a few pictures of your translam speakers) and in the many ads you have all...
Forum: DIY Speakers and Subs   03-21-2017, 06:32 PM
Replies: 62
Views: 1,674
Posted By diy speaker guy
Why do you keep posting about it if you don't...

Why do you keep posting about it if you don't want to talk about it?

Why are you advertising these products for sale if the "sealed/vented" idea is still a "halve cooked chicken" not ready to even...
Forum: DIY Speakers and Subs   02-21-2017, 07:06 AM
Replies: 78
Views: 1,645
Posted By diy speaker guy
If you want to bench race different drivers with...

If you want to bench race different drivers with a simulator you have to know how the specs were derived. There is no standard to define xmax and there are at least 6 different ways that different...
Forum: DIY Speakers and Subs   02-03-2017, 01:08 PM
Replies: 8
Views: 203
Posted By diy speaker guy
You will get vastly more spl from a ported box. ...

You will get vastly more spl from a ported box. This should be common sense.

This has nothing at all to do with frequency extension. You tune your box to the lowest notes you want to play and...
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