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Old 18th February 2011, 11:33 AM   #1691
Helmuth is offline Helmuth  Netherlands
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Quote:
Originally Posted by IslandPink View Post
I just wanted to jump in here and say thanks to David, if it's been a while since anyone said that, for all the effort he's put in developing this program and the incredible generosity of providing it free to all the DIY'ers out there.
Just yesterday I discovered that I could get all the numerical data I need to make my current mid/bass horn ( a hyperbolic ) using the 'Export > horn data' option . There it was , the profile for the curved and straight sides, all tabulated and ready to go .

What a hero !!

MJ
Yeah David deserves a statue.
Click the image to open in full size.

Really a fine programme to use although I do not know all the features already.

David I have a question can I simulate a 1"or 2" horn without knowing the TS-parameters.
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Old 18th February 2011, 12:08 PM   #1692
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by Helmuth View Post
David I have a question can I simulate a 1"or 2" horn without knowing the TS-parameters.
very good question !!!!

But do remember that these 1" and 2" dimensions refer to the mouth opening. The Dome and Voice Coil will be roughly twice as large.
i.e. ~50mm and ~100mm drivers buried inside the casing.
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Old 18th February 2011, 08:37 PM   #1693
djn is offline djn  United States
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What happens when a driver that is twice as small as the horn throat is used?
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Old 18th February 2011, 10:38 PM   #1694
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Originally Posted by djn View Post
What happens when a driver that is twice as small as the horn throat is used?
You get a poor horn design :^).

You should plug in the idea into Hornresp and find out, make S1 larger than Sd.
Simple answer, it will be less smooth and sensitive, women will hate it.

Art

Last edited by weltersys; 18th February 2011 at 10:42 PM.
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Old 19th February 2011, 05:47 AM   #1695
NEO Dan is offline NEO Dan  United States
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Question Acoustic watts question

Hi David,
Can it be added to the export data? It's interesting and I'd like to explore it's correlation with the other data. PLEASE

***

I have a built a couple bass cabs that Hornresp shows an output peak of ~300 acoustic watts for the pair, yes indeed they are NICE and LOUD.

Now for the strange...
I've recently revisited the design and in the same external form I have gotten an additional 1kw acoustic power peak output for the pair. Now considering I have spec'd much higher quality, larger drivers, 2 drivers per cab this time, and 4x total power I do expect a big increase in output. I did this while keeping the drivers near x-max and the CR is <3 this time around

Just wondering what other Hornresp users see in their own models, I'm skeptical to say the least.
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Old 19th February 2011, 07:52 AM   #1696
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Hi Helmuth,

Quote:
Originally Posted by Helmuth View Post
Yeah David deserves a statue.
Wrong statue - that is Poseidon, not David... :-).

Quote:
Originally Posted by Helmuth View Post
Can I simulate a 1"or 2" horn without knowing the TS-parameters.
Without knowing the driver parameters, all you can simulate is the horn throat acoustical impedance.

Kind regards,

David
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Old 19th February 2011, 08:04 AM   #1697
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Quote:
Originally Posted by NEO Dan View Post
Can it be added to the export data?
Hi Dan,

Acoustical output power can be readily determined from the existing exported data.

Acoustical output power = Pin * Efficiency / 100 watts

Simply export the data as a *.csv file, open in Excel, add a new column and enter / copy the above formula for acoustical power.

In Cell O2 the formula should read: = L2 * J2 / 100

Kind regards,

David
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Old 20th February 2011, 04:31 PM   #1698
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Hello David, just like everyone else I have been enjoying your excellent program for the past couple of weeks playing with FLH's, TH's and vented designs. Thank you for your continual work and patience.
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Old 20th February 2011, 10:38 PM   #1699
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Default Newbie needs help...

Greetings all!

I have to say straight off, that I have not read every page in this thread ....wow.... regretfully, I'm an anal retentive and therefore prefer organization (i.e. an index) to anarchy

But the number of pages here would seem a tribute in itself to the usefulness of 'Hornresp' and debt owed David J. McBean, but at the same time, possibly a reflection of its complexity.

Off topic: would it not be possible to reverse the two parameter input sections and label them according to use; i.e. 'Driver Parameters (T/S)' and 'Loudspeaker (+Sd) Enclosure Parameters'?

Help referred to:

1. Is it not possible to start 'Hornresp' with a blank input page? Once the driver parameters are entered what information will 'Hornresp' provide me with, if any? If yes, how and where do I get it?


2. Is there a 3 dimensional presentation of an enclosure where S1, S2, ..L12, L23....and possibly the other parameters are indicated in relationship to each other?


3. Why are S2, S3 and S4 repeated in the input page? Where are L12 and L23 located in the input page; ref. Help page?


4.This said, is there not a comprehensive example available that takes one from the driver to inputs and finally showing a complete enclosure in 3 dimensions with all the pertinent parameters indicated?


Thanks in advance for any and all help......arnakke
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Old 21st February 2011, 08:00 AM   #1700
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Originally Posted by arnakke View Post
Thanks in advance for any and all help......arnakke
Hi arnakke,

You might like to check out some of the Hornresp tutorials now available on the Web - simply Google "Hornresp tutorial". As you become more familiar with the program I think you will find that your questions are automatically answered. The layout and labelling of the Input Parameters window is not going to change, however :-).

Kind regards,

David
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