Melon Head's State of the "DUMB" Open Baffle Design

[Melon Head]

I think it is time to try more dumb ideas

 

[Melon Head]

Doing something absolutely melon head like this, does virtually nothing to extend bass response any further

 

[buzzforb]

Batman rises ...again?

Just add a wall and stick those things on IB.

 

[Melon Head]

Just wanted to see what would happen if I extended the baffle.

 

[buzzforb]

Jokes aside,
I hope to be building a building next year and plan to have the IB option. That is in fact what i have considered the AN15's for. Slightly toed in wall with AN15's and couple Delta Pro's, as they seem to look better down low than others, including Kappalite 15"

 

[Melon Head]

I will start testing the AN drivers on PHY baffle soon. I just need to get more cardboard.

After that I will try slot loaded PHY baffle

 

[norman bates]

I'm surprised that the baffle with 2 drivers (without the wings) goes as low as the graph shows. Then again, how tall and deep is that baffle (without the wings) ?

Is the bottom one running wide open or is there an inductor on it ?

And it is believable that the wings do nothing. The front and rear short circuit over the top. The top one's rear short circuits the bottom one's front (makes sense to me).


yea, I bet you will/have inspire(d) more than a couple of us to build the phy open baffle for the an15's.


Norman

 

[Melon Head]

One mystery I can't workout is that Frequency Response tells you absolutely nothing about how a speaker sounds, even if the distortion is also the same, speakers can still sound very different even though they measure the same.

I am guessing sine waves aren't the best way to make these assessments.

I don't want to think about that too much or I will seriously risk blowing up my remaining brain cells.

 

[Melon Head]

I'm surprised that the baffle with 2 drivers (without the wings) goes as low as the graph shows.

Me too.
Wait I will do the measurements

 

[Melon Head]

The centre baffle is 120cm x 45cm
The wings are 102cm tall x 35cm deep (at the bottom) and 30cm deep (at the top)
The change in depth from top to bottom occurs in a linear fashion

 

[Melon Head]

Is the bottom one running wide open or is there an inductor on it ?

1.5 way remember
There is a 4mH inductor on the bottom woofer

 

[Antoinel]

Melon Head. Will you predict the sound of your speaker if driven by a Transconductance Power Amp [TCA]? The recent F6 Amplifier threads are showing 'modified' circuits [e.g. by kasey197, and possibly circlomanen] to the simplified schematic of Mr. Pass which appear to be plausible TCAs to test it.

 

[Melon Head]

And it is believable that the wings do nothing. The front and rear short circuit over the top. The top one's rear short circuits the bottom one's front (makes sense to me).

Yes the top one short circuits quite quickly, but what about the bottom one?
I would have thought the additional width might have had an influence on extending FR on the bottom woofer.

 

[Melon Head]

Melon Head. Will you predict the sound of your speaker if driven by a Transconductance Power Amp [TCA]? The recent F6 Amplifier threads are showing 'modified' circuits [e.g. by kasey197, and possibly circlomanen] to the simplified schematic of Mr. Pass which appear to be plausible TCAs to test it.

I haven't looked at the F6 thread for a few days now. I will have to look at what they have created

 

[Zen Mod]

naah

mostly just chatting

 

[Melon Head]

The top one's rear short circuits the bottom one's front (makes sense to me).

Yes
This makes sense. Although I would have thought to a much lesser extent because it has already short circuited itself.
Just trying to make a bit of sense to this. I think you are right though

 

[Melon Head]

Well it definitely does show baffle height above woofer is just as critical as baffle width

 

[Melon Head]

One more idea.

Hey
What do you call a Deer with no eyes?

 

[buzzforb]

Hood ornament?

 

[Melon Head]

No idea