HD215 with combined chamber.

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   New user.. I have experienced some major problems with my e-mail and other accounts being hacked. So i have been forced to shut them all down and therefore i have made a new user here also.. 
Best regards..  Frank, now known as FOO. 
Formerly know as Crazy Dane 🙂

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FOO Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 23 December 2018 Location: Denmark Status: Offline Points: 815	Post Options Post Reply Quote FOO Report Post Thanks(0) Quote Reply Topic: HD215 with combined chamber. Posted: 23 December 2018 at 1:45pm
	New user.. I have experienced some major problems with my e-mail and other accounts being hacked. So i have been forced to shut them all down and therefore i have made a new user here also.. Best regards.. Frank, now known as FOO. Formerly know as Crazy Dane 🙂

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 3:31pm
	I am thinking more about the measurements in the start of the horn flare where flare and front chamber meets. It is not excactly the same, but very close. About the driver, i think that should be strong enough then 🙂 And Its actually the same price as PD154 when discount has been added. I know 60hz isnt low low, and thats also fine. If i need them to go lower, i will ad more. 2 stacks of 6 drivers each should make it a bit lower i guess 🙂 Or else, if i really need some grunt, i will add some dual18 BR boxes.
	Best regards... Frank

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 2:08pm
	its a matter of looks. acoustics wise, 3 piece is totally fine. 15nlw9401 has carbon reinforced cone, iirc. way stronger than pd154 for sure. You wont get usefull output below 60Hz, no matter what you put inside though.

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 12:13pm
	Might be a good idea to check that 🙂 Or else, neo must be the way. I am mostly conserned about the strength of the cone. I will from time to time be running a double on each side for small gigs. So it will be highpassed pretty "low". So its not all kick duty. "sub" duty will also be needed sometimes. Do you have any comments on the curved-to-3piece convertion? Or is it just all dandy and great that way? 😄
	Best regards... Frank

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 11:48am
	yeah that is the ferrit äquivalent and works aswell. not sure if the magnet fits inside the chamber, check that please ! ;) It will be a smoother tone but still far from "washy" if you get what i mean.

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 11:18am
	Interesting. I also think the pd154 loaded Cubo215 had very aggressive and harsh sound to it. But at the same time a really Nice kick. You think the 15nlw9401 will deliver a more rounded and smooth kick? What about 15lw2400? Looks to be just about the same driver, with ferrite and about 20% cheaper. Price isnt critical, but i dont need to save weight 🙂
	Best regards... Frank

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 9:56am
	i know, but imo the "original" Hd15 is not a nice cab at all. it has a brutal and unpleasant sound to me. Same as every low qes driver in a BPH, after simming and hearing quite some.

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 8:57am
	Pd154 is the recommended driver for this cab, and the Lf15n401 Sims almost the same. But I will take a look at what you recommend also 🙂
	Best regards... Frank

corell Members Profile Send Private Message Find Members Posts Add to Buddy List Young Croc Joined: 19 August 2013 Location: Berlin Status: Offline Points: 1161	Post Options Post Reply Quote corell Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 7:05am
	Both Chassis have to low qes for a frontchamber of that size. Try going with somehting more "moderate" around 0,28-0,3. 18sound 15NLW9401 comes to mind.

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 6:33am
	Would not say that it helps alot 🙂 A Sim does not tell much about how the sound is. But I can almost figure it out, that the PD will be more harsh and have more attack. I have used it in some Cubo 215 cabs some time ago. Very Hard hitting! Edited by Crazy Dane - 21 December 2018 at 6:34am
	Best regards... Frank

munkey Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 17 August 2011 Status: Offline Points: 300	Post Options Post Reply Quote munkey Report Post Thanks(0) Quote Reply Posted: 21 December 2018 at 12:43am
	https://forum.speakerplans.com/hd15-driver-sims_topic2617.html Might be of some help. The link are broken and you need to click the images
	the midtops!

Crazy Dane Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 14 October 2010 Location: Denmark Status: Offline Points: 303	Post Options Post Reply Quote Crazy Dane Report Post Thanks(0) Quote Reply Posted: 20 December 2018 at 11:44pm
	I have been reading and reading aaaand reading. And now i have come to that conclusion that i should just build them as they are.. Standard HD15. But...! I would like to make the flare with 3 straight sections instead of a curve. So after alot of failed Google searching, i found some partial drawing of a plan regarding the 3 piece flare. From those, i have made my own drawings. Can anybody confirm that my findings are correct and that it will work like the original HD15? There are small chamber volume differences, and also small differences in the throat. Am i good to go? Pictures here: https://imgur.com/a/AWKAK0x And last but not least.. I am trying to choose between PD154 and RCF LF15N401. They will cost me the same, so wich driver would be the superior choice? Best regards Frank Edited by Crazy Dane - 20 December 2018 at 11:45pm
	Best regards... Frank