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Dayton Audio RSS390HF-4 15" Reference HF Subwoofer 4 Ohm
Is the cone attached in a way that allows it to act as a heat sink for the voice coil? Aluminum cone speakers I had in the past used an all metal connection instead of just glue to help cool the voice coils.
I will be using a external amp rated at 200 watts per channel @ 4 Ohms. Will that be enough power to run this Sub?
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Date published: 2015-05-29
I have a 13cu ft box that is built into a room (1.5in thick on all sides). I think 2 of these would be good (sealed) for Q=0.66 and f3=42Hz. What other drivers would you recommend I look at for a 13cu ft sealed box? I like Q from 0.5 to 0.7
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Date published: 2015-05-29
Optimal sealed size for rss390hf of 2.88 ft3 does not match my own calculations. How well stuffed should it be on that volume? Based on your calculations what is the Q? Plan on running two 390hf's on the SA1000 Amp. Risk of oil-canning?
That volume takes into consideration the driver displacement and is calculated with average stuffing, which is about 1/2 pound per cubic foot of airspace. The Qtc of this alignment is 0.707. If you are going to run two of these on one SA1000 they will have to be wired in series for an 8 ohm load. I would not worry about oil canning in this configuration.
Date published: 2015-05-13
I understand that its not optimal to put this in smaller sealed enclosures. I'm not sure if this is due to suboptimal Q or due to cone excursion on higher watt amp? Winisd shows around 120l net (unstuffed) as optimal. 100L net stuffed should give good Q?
A slightly smaller enclosure will raise total Q which helps keep excursion under control in a sealed box. the difference between 120 and 100 L will be negligible, and lightly stuffing the enclosure will help make up for this.
Date published: 2015-05-07
I have an old Velodyne F-1500 enclosure with a bad driver. Exploded the VC, no simple trick I suspect. If this a good match for that cabinet IF I also change out the amp? And.. what amp would be good?
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Date published: 2015-05-06