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Looking for a skilled Hornresp user - RCF L15P/06C
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dcibel View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dcibel Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 2:38pm
I can't figure out how to upload images to this forum, so here' s a bunch of links to my Google Drive.

This is the results using the values posted by Teunos, with the exception that I don't get Fr and Tal values when I select tapped horn, and am uncertain of the values for Apt, Lpt, Vtc, etc. 
https://drive.google.com/file/d/0B-GpgK57lLMNdHZhQkxldmlnNnM/view?usp=sharing
https://drive.google.com/file/d/0B-GpgK57lLMNY0Q5dUJURXJhRlk/view?usp=sharing

This is the results using the values from the other thread that I linked to above:
https://drive.google.com/file/d/0B-GpgK57lLMNaV9BZGxDRHhQQ2M/view?usp=sharing
https://drive.google.com/file/d/0B-GpgK57lLMNTU5YZm1tTGFodDQ/view?usp=sharing

I'm not confident I've done this sims correctly due to not understanding what a few of the values mean, regardless it looks like I should be able to get extension down to about 40Hz with this combination. 
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Teunos View Drop Down
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Points: 1832 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Teunos Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 3:51pm
the sim you ran on my input data looks about the same as what i got when i quickly tried it with your parameters. 

The other simulation you did that you got from the topic assumes a standard rear loaded horn while you also used TH mode! This is wrong!
If you use those numbers, you have to put the driver arrangement to Normal Nd. 

I think if you use my numbers and the correct mode for that (TH, like you did) and compare that with the sim from the other thread but then with The correct mode for that (Normal Nd), then the simulations will probably be pretty equal.
I dont think there will be large discrepancies between the TH model (mine) or the ND model (from the other thread)

Do you get what i mean?
Best regards,
Teun.
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dcibel View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dcibel Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 5:21pm
Thanks so much. You are correct, the sims are very similar when I set the other to normal Nd, however with a difference of 5dB sensitivity, your values being the lower of the two. The shape of the response is equal however, which is what I wanted to see anyway. It looks like a nice extension to 40Hz, requiring a sharp high pass filter below that. 

I am actually quite satisfied with the result, so I will likely proceed to build a pair of scoops for these drivers. 

Thanks everyone for the assistance!
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b grade View Drop Down
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Points: 1333 		Post Options Post Options   Thanks (0) Thanks(0)   Quote b grade Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 6:26pm
Is the ND and the TH in the same Ang? 5 DB increase is probably with a more optimistic space.
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dcibel View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote dcibel Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 7:22pm
Aha! Right you are, I had one set to 1Pi, the other at 2Pi. Now they are right on top of each other. PEBCAC.
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Young Croc
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Points: 1333 		Post Options Post Options   Thanks (0) Thanks(0)   Quote b grade Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 7:39pm
been there done that. :)
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Teunos View Drop Down
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Points: 1832 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Teunos Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2015 at 8:18pm
Originally posted by dcibel dcibel wrote:

Aha! Right you are, I had one set to 1Pi, the other at 2Pi. Now they are right on top of each other. PEBCAC.
Jup like i said, mine is modeled as a TH but if you get the numbers correct then it doesnt really matter if you use a TH or a rearloaded horn configuration. Hornresp basically just uses impedance transformer models for each section of the horn. An entire cab is just a nodal labyrinth of sections and all of them combined with the electric equivalent of the driver as source, you must get the same result if the model is true to the physcial representation of the actual cab.
Be it a TH or BLH, in this case you can use both ;)
Best regards,
Teun.
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ampedupelectronics View Drop Down
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Points: 1 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ampedupelectronics Quote  Post ReplyReply Direct Link To This Post Posted: 25 May 2025 at 4:17pm
Originally posted by dcibel dcibel wrote:

Hi all,
I have a pair of ancient speakers that I would like to put to good use. They are RCF L15P/06C. I haven't found much info about them online, just a few posts. They seem to be well liked, and one post suggested that they would work well in a "Staiper Microscoop". These speakers have a exteremely low Qts making them difficult to use in a "normal" sealed or ported cab, so I am open to other suggestions on what to do with them. 

I am not new to acoustic design, however I don't really have any horn experience. Is there someone experienced with Hornresp that can run a simulation of this driver in a Microscoop? Below is the cabinet design and a link to my measured T/S parameters. 

https://drive.google.com/file/d/0B-GpgK57lLMNZGxGdWVUaTMyLVE/view?usp=sharing


Hi, this link is broken but I am hoping you still have the T/S perimeters to post for this driver?
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