REloading a "tubby" G Sub

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   So, I have had a go at using WIN ISD- th einternal measuremeant sseem to be 131x50x38.5cm, the port is 50x27, going down to 50x15... I calculated a volume of 255.4l, and WIn Rsp gives me a tuning of around 29hz. 

So far so good the PD186/2 is 30hz-above so I think in that respect it won't resent an issue ( especially if my filters are on hig hpass 30hz and above,)..an assumption, but I am a noob

The excursion I suspect is based on original pd186, but around 50hz was 9cm vs xmax of 10.5 cm on 186/2... my guess is I need to eq the 45-60 hz band  down a little to get an even response ?

Of course this is without the porting angle being taken into account...which I'll have a go at next, but I wondered if I had used WIN SIP correctly here ? Cheers for the help  

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Radius Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 30 January 2019 Location: UK Status: Offline Points: 102	Post Options Post Reply Quote Radius Report Post Thanks(0) Quote Reply Posted: 27 October 2019 at 5:12pm
	So, I have had a go at using WIN ISD- th einternal measuremeant sseem to be 131x50x38.5cm, the port is 50x27, going down to 50x15... I calculated a volume of 255.4l, and WIn Rsp gives me a tuning of around 29hz. So far so good the PD186/2 is 30hz-above so I think in that respect it won't resent an issue ( especially if my filters are on hig hpass 30hz and above,)..an assumption, but I am a noob The excursion I suspect is based on original pd186, but around 50hz was 9cm vs xmax of 10.5 cm on 186/2... my guess is I need to eq the 45-60 hz band down a little to get an even response ? Of course this is without the porting angle being taken into account...which I'll have a go at next, but I wondered if I had used WIN SIP correctly here ? Cheers for the help
	AKA the typo king...bear with me, my hands are big and the keyboard small....

Elliot Thompson Members Profile Send Private Message Find Members Posts Add to Buddy List Old Croc Joined: 02 April 2004 Location: United States Status: Offline Points: 5175	Post Options Post Reply Quote Elliot Thompson Report Post Thanks(0) Quote Reply Posted: 27 October 2019 at 5:35pm
	I appears you can just drop-in the drivers and start enjoying your favourite tunes. I wouldn't worry about the xmax. If you exceed the xmax slightly, you will not damage the driver. It is only when you exceed the xmech limit is when you will damage the driver. A high pass filter anywhere between 30 Hz - 35 Hz will be appropriate for the PD 186/2-Tubby combination. Best Regards, Edited by Elliot Thompson - 27 October 2019 at 5:36pm
	Elliot Thompson

Radius Members Profile Send Private Message Find Members Posts Add to Buddy List Registered User Joined: 30 January 2019 Location: UK Status: Offline Points: 102	Post Options Post Reply Quote Radius Report Post Thanks(0) Quote Reply Posted: 27 October 2019 at 8:44pm
	Spot on! I'm off to an arts centre hoping to set up some Sunday sessions... It's an old church so I'm sure I'll be wanting more sound enforcement..
	AKA the typo king...bear with me, my hands are big and the keyboard small....