The "Elsinore Project" Thread - Page 152

petefrontiers · 5th March 2013, 09:52 PM

Thanks Joe. I have enough damping left so it will not be a problem to try getting lower this way. 20mm more on the port? I'm surprised that I can add as much considering the relatively short lenght of the port.

jdkJake · 8th March 2013, 01:55 PM

Quote:

Originally Posted by petefrontiers

Thanks Joe. I have enough damping left so it will not be a problem to try getting lower this way. 20mm more on the port? I'm surprised that I can add as much considering the relatively short lenght of the port.

I added 15mm to mine to get the appropriate drop. You would be surprised how much you can add and how small the corresponding frequency drop that results.

Sharkythefrog · 8th March 2013, 04:34 PM

Good to have some quality tools on site.....

We also made the chambre for the tweeter closed by a thinner lid.
Having fun...

ermat1234 · 8th March 2013, 04:42 PM

Nice work. Makes my very modest clamp collection feel very inadequate !

Sharkythefrog · 8th March 2013, 04:45 PM

Our Tweeter mounting cabinett hole and the submerged WG with the same outline as the mids and the bases......

Sharkythefrog · 8th March 2013, 04:47 PM

Quote:

Originally Posted by ermat1234

Nice work. Makes my very modest clamp collection feel very inadequate !

I did just happen to find the best carpenter and his site in the area. Nice guy, he help us on and of when we do stupid things, we pay for the time he spend and some minor sum for he letting us spend hours and hours there.... Really Nice

petefrontiers · 9th March 2013, 11:27 AM

Quote:

Originally Posted by jdkJake

I added 15mm to mine to get the appropriate drop. You would be surprised how much you can add and how small the corresponding frequency drop that results.

I found an interesting study about the effect of port lenght and damping vs Fb. vent tuning

petefrontiers · 9th March 2013, 11:54 AM

Very nice work Sharky and Sibbeli ! I'm curious to see your carbon fiber waveguide.

petefrontiers · 9th March 2013, 02:37 PM

Played with damping and port lenght this morning. Adding damping did not lower Fb, obviously, I didn't add enough... Fb stayed at 35 Hz. I only changed the 25mm thick damping pieces at the front for 33mm thick pieces.

I added 20 mm to the port with tape and Fb got down to 33 Hz.

jdkJake · 9th March 2013, 10:51 PM

Quote:

Originally Posted by petefrontiers

Played with damping and port lenght this morning. Adding damping did not lower Fb, obviously, I didn't add enough... Fb stayed at 35 Hz. I only changed the 25mm thick damping pieces at the front for 33mm thick pieces.

I added 20 mm to the port with tape and Fb got down to 33 Hz.

Do you like the sound better at that tuning?

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5th March 2013, 09:52 PM	#1511
petefrontiers diyAudio Member Join Date: Nov 2010 Location: Quebec	Thanks Joe. I have enough damping left so it will not be a problem to try getting lower this way. 20mm more on the port? I'm surprised that I can add as much considering the relatively short lenght of the port.

8th March 2013, 04:42 PM	#1514
ermat1234 diyAudio Member Join Date: Jun 2011 Location: melbourne	Nice work. Makes my very modest clamp collection feel very inadequate !

9th March 2013, 11:54 AM	#1518
petefrontiers diyAudio Member Join Date: Nov 2010 Location: Quebec	Very nice work Sharky and Sibbeli ! I'm curious to see your carbon fiber waveguide.

9th March 2013, 02:37 PM	#1519
petefrontiers diyAudio Member Join Date: Nov 2010 Location: Quebec	Played with damping and port lenght this morning. Adding damping did not lower Fb, obviously, I didn't add enough... Fb stayed at 35 Hz. I only changed the 25mm thick damping pieces at the front for 33mm thick pieces. I added 20 mm to the port with tape and Fb got down to 33 Hz.