thank you I will try, I must not be very familiar with winisd.
I try to adapt 2 rectangular ports for a 15" like the 15w700.
I already have a modular box with a volume for the bass of 100 liters where there are 2 rectangular ports. 3.8 cm wide, 16 cm long and 28 cm high. I can only change the height (28 cm) by reducing it. And i can't to determine it...
I'm thinking of switching to hypex FA503
or can pass on 100 liters closed but the 15w700 does not go down ... maybe with EQ and room gain ...
I try to adapt 2 rectangular ports for a 15" like the 15w700.
I already have a modular box with a volume for the bass of 100 liters where there are 2 rectangular ports. 3.8 cm wide, 16 cm long and 28 cm high. I can only change the height (28 cm) by reducing it. And i can't to determine it...
I'm thinking of switching to hypex FA503
or can pass on 100 liters closed but the 15w700 does not go down ... maybe with EQ and room gain ...
Right, so let me get this clear, you're not really asking about Troels' Loudspeaker 3 at all?
In your case, if the ends of the vent are well away from the cabinet walls, they'll tune to around 51Hz, if they're fully built in as a slot they may tune as low as 39Hz.
That's because when a port is built in along the wall of a cabinet, it behaves as if it's longer than its actual size.
Bjorno posted a handy graphic with alternative "End Correction Factor" values to allow us to calculate effective tunings for different port configurations, I attach a copy here.
Of course, that means we do have to do some number crunching ourselves to work out the new port tuning, but that can be done in a spreadsheet easily enough.
HTH,
David.
In your case, if the ends of the vent are well away from the cabinet walls, they'll tune to around 51Hz, if they're fully built in as a slot they may tune as low as 39Hz.
That's because when a port is built in along the wall of a cabinet, it behaves as if it's longer than its actual size.
Bjorno posted a handy graphic with alternative "End Correction Factor" values to allow us to calculate effective tunings for different port configurations, I attach a copy here.
Of course, that means we do have to do some number crunching ourselves to work out the new port tuning, but that can be done in a spreadsheet easily enough.
HTH,
David.
Attachments
I will analyze all of this.
for you which 15" woofer to choose for closed box of 100 liters. to cut in LR24 300Hz and to align on 93 db (therefore 97 db minimum) with hypex FA503
I tell myself that the enclosure is the best solution for corner speakers!
My med is 8nmb420
for you which 15" woofer to choose for closed box of 100 liters. to cut in LR24 300Hz and to align on 93 db (therefore 97 db minimum) with hypex FA503
I tell myself that the enclosure is the best solution for corner speakers!
My med is 8nmb420
I don't have horns on the front end, but some little Mark Audio Alpair 7.3 drivers, which feel almost as fast as horns,
After hearing a podcast (Darko Audio) I researched more into RiPole subs. And bought 2 of the SB Audience 12OB... to use in this configuration. I have the drivers but haven't built the cabs yet. Will be powered by a Hypex Fusion plate amp.
The concept seems interesting for the Ripole's as they interact (or don't) with the room as much as normal subs, and offer horn/ob/electro static like speed.
They were all under patent/license which has now expired, so there are lots of companies coming to market offering this 'new tech'.
After hearing a podcast (Darko Audio) I researched more into RiPole subs. And bought 2 of the SB Audience 12OB... to use in this configuration. I have the drivers but haven't built the cabs yet. Will be powered by a Hypex Fusion plate amp.
The concept seems interesting for the Ripole's as they interact (or don't) with the room as much as normal subs, and offer horn/ob/electro static like speed.
They were all under patent/license which has now expired, so there are lots of companies coming to market offering this 'new tech'.
Honestly, I'm more familiar with PA style drivers which would normally be used vented in this kind of box size, so I don't have any good suggestions off the top of my head.
It will also depend how loud you need to get, how much EQ you're willing to use, and how deep you want to get. Some of these may end up in conflicting requirements - eg if you want very deep but not to use too much EQ, you'll probably have to go vented.
If the room's construction is massive/rigid enough, the corners will have up to +9 dB with > +6 dB being normally better overall for sealed or low tuned EBS vented alignments. My 70 y.o. 'floating floor', Deep South, cheap constructed house OTOH only has ~ +3-4 dB, so powerful venting [TL/horn] or high Qtc sealed is required.
Yes it' s rigid. I have 70-75 liters but i can have 100-110 liters. Perhaps BMS 15n850v2 or beyma 15mc700nd
