Discuss ...

[DoubleTap]

http://www.decware.com/newsite/FRX.html

[Pete Schumacher]

Re: Discuss ...

http://www.decware.com/newsite/FRX.html

Not sure why he had to use a transformer to create a current source to drive the voice coil. But I suppose you don't have to sell a custom amp to do the same thing that way.

So, if he's dumping power into a dummy load, why not just do the same thing with a crossover?

[DoubleTap]

Re: Discuss ...

Not sure why he had to use a transformer to create a current source to drive the voice coil. But I suppose you don't have to sell a custom amp to do the same thing that way.

So, if he's dumping power into a dummy load, why not just do the same thing with a crossover?

That was my thought too, since every speaker is an electromagnet already, I'm not sure what he's trying to say with his marketing.

And I'd bet anything that published FR graph is a load of you know what.

[Pete Schumacher]

Re: Discuss ...

That was my thought too, since every speaker is an electromagnet already, I'm not sure what he's trying to say with his marketing.

And I'd bet anything that published FR graph is a load of you know what.

Did you download one of the close mic'd recordings supposedly made from the driver itself?

[DoubleTap]

Re: Discuss ...

Did you download one of the close mic'd recordings supposedly made from the driver itself?

Ha, no ... but I might try that downstairs.

[Mark65]

Re: Discuss ...

Just skimming through, I found the DNA Horn that uses the $112 Tang Band W5-1880 Fullrange. No harm in that, but he even uses the PE ad copy for it!:eek:

http://www.decware.com/newsite/HORN.html

And only charges $2300 for a pair.:D


Mark

[Pete Schumacher]

Re: Discuss ...

Just skimming through, I found the DNA Horn that uses the $112 Tang Band W5-1880 Fullrange. No harm in that, but he even uses the PE ad copy for it!:eek:

http://www.decware.com/newsite/HORN.html

And only charges $2300 for a pair.:D


Mark

I wonder how he gets that horn output to sum so nicely with the driver output to arrive at such a ruler flat response. :rolleyes:

[DoubleTap]

Re: Discuss ...

Just skimming through, I found the DNA Horn that uses the $112 Tang Band W5-1880 Fullrange. No harm in that, but he even uses the PE ad copy for it!:eek:

http://www.decware.com/newsite/HORN.html

And only charges $2300 for a pair.:D

If I had the same margin, my Cirrus would be about $18,000/pair :eek:

[Mark65]

Re: Discuss ...

If I had the same margin, my Cirrus would be about $18,000/pair :eek:

:D:D:eek::D:D

[Deward Hastings]

Re: Discuss ...

I'll take the one with the girl in it . . . it would free up some space in the closet . . . :rolleyes:

[isaeagle4031]

Re: Discuss ...

There is quite a bit of discussion on the dnas over on diyaudio. Some of the posters were none too kind to them and what id posted on decwares website. I'm still trying to wrap my head around all of the horn theories, but I am having a very hard time believing a lot of the graphs from decware.

Funny too, I know in one of my books of drawings I have drawn a BLH very similar to the DNA:D Just haven't gotten around to actaully building it yet.

[Paul Carmody]

Re: Discuss ...

How can a single driver, on an open baffle produce this without a filter? (Or is there a filter involved, and I missed it).



Where is the dipole peak? The -6 dB/oct roll-off below that?

[Pete Schumacher]

Re: Discuss ...

How can a single driver, on an open baffle produce this without a filter? (Or is there a filter involved, and I missed it).

Where is the dipole peak? The -6 dB/oct roll-off below that?

Nothing gets by you grasshopper.

It's probably buried inside the large coupling chamber that hosts the dummy load and transformer.

As for the flatness of response . . . well, that'll have to wait until my order arrives for confirmation.

Then again, we could look at Curt's singularity for a taste, could we not?



Sure looks similar eh? Just a redone surround perhaps?

[critofur]

Re: Discuss ...

With a transformer one can achieve something like "bass boost" WITHOUT throwing power into resistors. You see, you can tap into the output from the amp both before and after the transformer so you can essentially get your ~ 6 db BSC without wasting any power into resistors (of course, the wire will have some resistance...). [If you think I'm saying something that's incorrect here, I'm not, just think it through and you'll probably figure it out - I'm not implying that you are gaining efficiency]

You can also attach passive crossover components at different points along the transformer's wire. Many neat tricks can be done...

[Pete Schumacher]

Re: Discuss ...

With a transformer one can achieve something like "bass boost" WITHOUT throwing power into resistors. You see, you can tap into the output from the amp both before and after the transformer so you can essentially get your ~ 6 db BSC without wasting any power into resistors (of course, the wire will have some resistance...). [If you think I'm saying something that's incorrect here, I'm not, just think it through and you'll probably figure it out - I'm not implying that you are gaining efficiency]

You can also attach passive crossover components at different points along the transformer's wire. Many neat tricks can be done...

You do that with an 8 Ohm speaker, and you'll drop the impedance presented to the amp to 2 Ohm.