I need some box plans for a DIY ht sub

[GlocksRock]

It doesn't matter now... I sold the sub to my friend. I'm now looking to sell my PB10-NSD then move the 20-39PC+ to the bedroom, so I can get an PB13 Ultra! I have a couple of prospects for the NSD already, but I would prefer to sell it locally.

 

[annunaki]

I plotted the sub and when using a 80hz lowpass filter with at least a 3rd order slope, it turns out OK. Using a 4.0ft^3 enclosure with a 3.5" x 16" x 58" vent tuned to 24hz the -3db point on the low end is around 22 hz.

 

[lsiberian]

I plotted the sub and when using a 80hz lowpass filter with at least a 3rd order slope, it turns out OK. Using a 4.0ft^3 enclosure with a 3.5" x 16" x 58" vent tuned to 24hz the -3db point on the low end is around 22 hz.

I guess I need to learn your tricks

 

[GlocksRock]

That seems pretty good, but I want something that can still do below 20 hz. I think I'll be best suited by the ultra for my setup, thanks to all those that looked into this for me.

 

[lsiberian]

That seems pretty good, but I want something that can still do below 20 hz. I think I'll be best suited by the ultra for my setup, thanks to all those that looked into this for me.

Does the ultra extend below 20hz?

 

[GlocksRock]

Oh yes, you can put it in a 10 hz. tune mode, but I will most likely not plug any ports, or just plug one, giving it a 15 hz. tune.

 

[annunaki]

It was an interesting driver to model. If it is tuned lower, a spike in response occurs at the tuning frequency around +3db to +5db. The vent size & length also increases greatly to keep noise inaudible.

It appears to be capable of a lot of output (112db+ at 20hz; 118db+ above tuning) . Though, with that much vent area (56in^2) it should.

 

[lsiberian]

It was an interesting driver to model. If it is tuned lower, a spike in response occurs at the tuning frequency around +3db to +5db. The vent size & length also increases greatly to keep noise inaudible.

It appears to be capable of a lot of output (112db+ at 20hz; 118db+ above tuning) . Though, with that much vent area (56in^2) it should.

Agreed. This thing is really powerful.

I was able to model it in a box with a very nice bump at 25hz. tuned around 25hz. With a big box this thing could shake a house.

 

[tokehectic]

Check out speakerplans.com for some inspiration on box design there were some good ones the last time I checked.

As for an amp Id say CV900/1800 would do the trick fine.

http://sabotageaudio.co.uk/index.php/store.html?page=shop.browse&category_id=9

 

[WmAx]

Okay, I have put this driver through several scenarios in modelling. It can be used for a high quality HT device with substantial SPL at 20Hz. I needs to be used in a 2 cubic foot sealed cabinet (based on factory T&S parameters). You will need to use 2 parametric bands to obtain the desired response. One filter will be used at 20Hz, Q=2, Gain= +8dB. The 2nd filter will be used to correct/flatten the inductance hump that this driver most likely has. But since Le is not specified in the manual, you will have to either measure inductance and provide this parameter, or simply measure the final acoustic response of the driver in the final cabinet and apply a suitable parametric band to counteract this response peak.

You need an absolute minimum of 2000 watts RMS plus at least 2 parametric EQ bands available. Plate amp need not apply. But this can be used as a formidable, tiny sized, high output home subwoofer. I am of course assuming a very linear driver since it is really a TC Sounds TC9 motor based driver according to a poster in this thread.

-Chris

 

[GlocksRock]

I knew it could make a great HT sub... it's just more involved that what I'm looking for. I know my friend will be very happy with it in his car, as I was for the years that I used it. I just hope he decides to port it one day so I can hear what it's really capable of.