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PD.186/3 does fit in a 186 horn?

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medkit View Drop Down
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    Posted: 10 February 2022 at 1:38pm
hello there, iam planning to build two 186 for my listening room. 
What brings me the most hifi sound out of it?
what driver fits perfect at the moment? any ideas to the 

PD.186/3 

https://www.precision-devices.com/products/all-products/pd-186-3/
Is it still the same. Data seems little different. Is it even better or should i choose
a

RCF L18P300-07

https://www.thomann.de/de/rcf_l18p30007_8_ohm.htm?gclid=EAIaIQobChMIqrrq7Jzz9QIVDLh3Ch26oQCFEAQYASABEgKyNPD_BwE 

??? 
may you can help me out.
 
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Post Options Post Options   Thanks (1) Thanks(1)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 2:08pm
For a listening room, if you want Hifi Sub, would suggest 2x18 reflex, loaded with Fane 18XB.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Esc4pe Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 2:11pm
Originally posted by medkit medkit wrote:

hello there, iam planning to build two 186 for my listening room. 
What brings me the most hifi sound out of it?
what driver fits perfect at the moment? any ideas to the 

PD.186/3 

Is it still the same. Data seems little different. Is it even better or should i choose
a

RCF L18P300-07


??? 
may you can help me out.
 

There is some helpful posts on the FAQ that can help you compare parameters yourself, just click the Speakerplans icon at the top then choose FAQ on the tabs! 

186 horn for HiFi sounds very mental!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote levyte357- Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 2:45pm
Originally posted by Esc4pe Esc4pe wrote:

186 horn for HiFi sounds very mental!


1x 186 Horn Cab, will barely hit 48hz.

There are some 1x15" Home theatre subs, that will do 15hz, so not sure about mental...
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Post Options Post Options   Thanks (0) Thanks(0)   Quote toastyghost Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 2:51pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by Esc4pe Esc4pe wrote:

186 horn for HiFi sounds very mental!


1x 186 Horn Cab, will barely hit 48hz.

There are some 1x15" Home theatre subs, that will do 15hz, so not sure about mental...


Not if you do the maths and place it so the room’s corner extends the path length and mouth area.

But still, for what appears to be a critical listening space, neither of those drivers nor that box are a good suggestion. It’s ‘boring’ but for most folk, it’s hard to beat the simplicity of a fridge-sized sealed box or ‘infinite baffle’ loaded with a high-excursion driver like almost all of the top-tier PA drivers aimed at reflex cabinets.

With normal home listening levels, a Linkwitz transform and the room gain will easily extend the response low enough for it to be real fun.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Esc4pe Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 3:26pm
Originally posted by levyte357- levyte357- wrote:

Originally posted by Esc4pe Esc4pe wrote:

186 horn for HiFi sounds very mental!


1x 186 Horn Cab, will barely hit 48hz.

There are some 1x15" Home theatre subs, that will do 15hz, so not sure about mental...

I’m more than aware. Hence saying it would be mental to use when a smaller cab can give more of the fidelity wanted with a hifi system. 

Mental:
INFORMALBRITISH
mad; insane.



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Post Options Post Options   Thanks (0) Thanks(0)   Quote FOO Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 3:58pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote medkit Quote  Post ReplyReply Direct Link To This Post Posted: 10 February 2022 at 4:27pm
the PD.186/3 seems to be a little different than the older one. Will it fit or not? What do you mean? 


THIELE SMALL PARAMETERS
Fs34.18 Hz
Re6.19 Ω
Qms10.77
Qes0.55
Qts0.52
Le (@ 1 kHz)1.95 mh
Vas192.15 litres
Mms203.93 g
Sd1134.11 cm2
Cms106.67 µm/N
BL22.18 T/m
Xmax10.5 mm
Vd1.2 litres
Ref. Efficiency2.05%
EBP62.14 Hz

EBP changed lower. Is it possible?  Better to go with the  RCF L18P300 https://images.static-thomann.de/pics/atg/atgdata/document/specs/241835.pdf ?? 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote turbo7 Quote  Post ReplyReply Direct Link To This Post Posted: 13 February 2022 at 9:21am
i just had a look at the specs - this driver is not suited for any horn at all. 

It is exremely weak in its motor structure, the specs tell you to build a closed box or maybe a bassreflex for low SPL ( maybe Hifi ) good sounding deep and round Sub. 

You can get drivers which will provide  2x output for the same cost easily. 

The RCF driver would be a bit louder, although a mms = 180g is too low for high compression horns and it could be dangerous to damage the cone, this is as well a Bassreflex driver. 


Edit: Both might be OK for your home hifi setup, although i would not build a 186 Horn for home Hifi. You would gain much better overall sound quality with a closed box. 


Edited by turbo7 - 13 February 2022 at 9:32am
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