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nice 500w 8ohm 15" Woofer
nice 500w 8ohm 15" Woofer
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Old 15th November 2015, 01:11 AM   #1
MikeCTM2 is offline MikeCTM2  United States
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Default nice 500w 8ohm 15" Woofer

HI
I just logged in here, and i see the last time i logged in was 18th June, 2004

It's been a decade!

I always liked my Adire Audio Tempest. a 15" subwoofer for home audio.

I have a Dayton Audio SA1000 subwoofer amplifier.

For a 3 cu ft ported box, what would be a nice subwoofer, currently availabe, that would be similar to the Tempest ?

I'm looking for a woofer that likes 500w at 8ohms.

I really appreciate the help and insight
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Old 15th November 2015, 06:09 AM   #2
GM is offline GM  United States
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Dayton Audio DVC385-88 15" DVC Series Subwoofer

GM

edit: Oops! it's the 'standard' replacement, but doesn't meet your 8 ohm requirement.
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Last edited by GM; 15th November 2015 at 06:17 AM.
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Old 15th November 2015, 01:07 PM   #3
snappyturtle is offline snappyturtle  United States
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as GM said the dayton DVC is about as direct a replacement as you can get for the tempest. your amp is 4ohm stable so that's not a problem, but if you have your heart set on 8 ohm configuration, the dayton series II is a viable option.

for a little more money the dayton reference HO and HF's could mate to your amplifier as well, and if memory serves, operate well in fairly small enclosures
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Old 15th November 2015, 03:21 PM   #4
Brian Steele is offline Brian Steele  Grenada
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The DVC 385 is now on clearance for what looks like a pretty low price.
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Old 15th November 2015, 10:23 PM   #5
MikeCTM2 is offline MikeCTM2  United States
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HI. appreciate all this.
I think i may get that Dayton Audio DVC385-88 subwoofer.

the specs say 8ohm and 350watts RMS

But like GM pointed out, it can't even be wired to see a 8ohm Load !
My point, why do manufactuers give specs like that ?
So......... what will the RMS power rating be at 4ohms ? ( what the acutal ohm load will be )
And to say another way...... will the dayton audio SA1000 subwoofer amplifier work ?

Last night got things all connected, the woofer installed..
Tonight will be the first time actually turning on the SA1000
I go slow. Read all the instructions again this morning. The SA1000 instructions and the Alpine SWS-15D4 instructions.

i'm using a Marantz CD player and the coaxial digital out, to a Scott Nixon TubeDac (with its little seperate power supply ) to then a simple Sony 2-channel 100W receiver. Then some JBL speakers i've always liked. LX44s ? or something like that.....
Then the audio signal out to the SA1000 connected to a single SWS-15D4 (in a 3 cu ft ported enclosure

The SWS-15D4 was only $130 shipped from Sonic Electronix
Got the SA1000 from Parts Express for $338

Wired the subwoofer in series, per the sws-15D4 owners manual, so the sub amp sees an 8ohm speaker. so the sub amp will put out 500w then. And the sws-15D4 is rated at 500w RMS.


........If i got the Dayton Audio DVC385-88 then the sub amp would see a 4ohm speaker. so the sub amp would put out 1000w. I may get the DVC385
I wander what kind of difference i'll see. comments ?
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Old 15th November 2015, 11:34 PM   #6
GM is offline GM  United States
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Greets!

The 8 ohms/350 W rating is per voice coil [VC], so in theory rated for 700 W in parallel, but 600 w is probably a more realistic rating. All the rest of the specs are with the VC's in parallel.

According to the specs and impedance plot, it's nominally 4 ohms dipping to 3 ohms in its pass-band and your amp is rated 950 W/4 ohms, so there's plenty of peak transient power available if true.

Don't have any experience with any of your equipment, but between 4-8 ohm output, the 4 ohms will heat up the VCs quicker/maintain it longer due to drawing more current, so all else equal, thermal power compression could be more obvious more often, assuming you've ever noticed it [many don't until it gets really excessive] and of course there's the potential for one or more VCs to fail quicker than at 8 ohms.

GM
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Old 16th November 2015, 01:34 AM   #7
MikeCTM2 is offline MikeCTM2  United States
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I like the sub we're talking about, Parts Express part no 295 190

But i just found out about Parts Express part no 295 469

It's the Dayton Audio RSS 390 HO-4

I think this may be the one i get.....

And reading about it in the REVIEWS section below, at the Parts Express website, is just highly impressive.

It's 800w RMS ....4ohms

Is this just a SVC subwoofer ? ...or am i getting confused again?


So the DVC385-88 is 700w RMS ( 4ohms )
And the RSS 390 HO-4 is 800w RMS ( 4ohms )

the DVC385-88 is $145
the RSS390HO-4 is $173


the DVC385-88 requires a 4.74 cu ft ....for vented
the RSS390HO-4 requires only around 2.8 cu ft ....for vented

I currently have a 3.0 cu ft vented enclosure. with a 14" cut out.

The vented box size thing is a big deal, for me.
Therefore, the RSS 390 HO-4 will be the one i get ( in addition to my SWS-15D4
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Old 16th November 2015, 02:35 AM   #8
GM is offline GM  United States
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Quote:
Originally Posted by MikeCTM2 View Post
Is this just a SVC subwoofer ? ...or am i getting confused again?
That's what the description, specs indicate.

GM
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Old 18th November 2015, 03:03 AM   #9
MikeCTM2 is offline MikeCTM2  United States
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Appreciate the time and help GM and snappyturtle.

I played the sws-15D4 for the first time last night. I used the analog outputs of my Sony stereo receiver to the SA1000. This evidently just gave the SA1000 a constant audio signal of 250mV ( the master volume knob on the Sony does not control these analog outputs i learned ) Then i used the gain knob on the SA1000 to control the volume a bit. Worked Fine. ......but this is ridiculous.
I unboxed my Dodd Audio $450 tube preamp last night too.
Will be using that now....... so from the (source ) cd player (coaxial digital out) to the Scott Nixon TubeDac to the Dodd preamp to then the SA1000 !
..........then i'll use the highpass analog outputs of the SA1000 to send an audio signal to the sony stereo receiver. So the SA1000 will only be 'seeing' decent quality audio equipment. no cheap/crappy Sony receiver.

This is only just a little pet project. I'm just wanting to play a sub.
For a long time had an Adire Audio Tempest in a huge *** vented enclosure created by Mr. Marv..... i don't know if anyone knows who he is. he was popular back in 2003 as a speaker box maker. I drove up to Monterey in person to get it. was 22 years old then. Fun trip.

A few years ago i had to move, and i had to give this tempest and custom box to someone. I've contacted him, btw, to see if i can get it back.

I tried the sws-15D4 and it was fine. But when the low Frequencies were played, it did not HIT like the TEmpest did.....

https://orangecounty.craigslist.org/wan/5237489422.html

I hope that Internet Link Works. ..that's the box i got. drove down to Santa Ana 2 weeks ago.

I have the CD entitled KRONIC BASS. I've basically practically memorized it.

The tracks, like track 6, where i know what Low Frequencies should be making everything shake, just aren't quite as impressive (with the sws=15D4 in this 3 cu ft vented box ) as they were with the Tempest in the old big ported box i had.

I know it would help tremendously if i knew what the size of my old Tempest box was.
I've been doing some research here, and i'm seriously suspecting that it was the big vented box that Adire had at their Website, at the time. ( also known as their 320 Liter vented EBS enclosure )


How many cubic feet is 320L ?

How many cubic feet is 214L ? .....Is 214L about 7.8 cu ft ?


I'm trying to find these diagrams.....

What was the vented box size for the Adire audio Tempest ?
Does the Dayton audio DVC385-88 15" subwoofer have the exact same vented box size specifications ?


I've ordered the Dayton Audio RSS390HO-4 15" subwoofer. It's on its way. I want to see how this will do in this enclosure. The sws-15D4 is 8ohm, the RSS390 is 4ohm.

That might be all i do.
Ideally....... I'd love to order the Dayton Audio DVC385-88 and have a big box to put it in. But i have to find a speaker box maker, and before that, the scematics/ diagram of the box i want

If the RSS390HO-4 is better, ....i'll sell the sws-15D4
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Old 18th November 2015, 07:43 AM   #10
GM is offline GM  United States
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You're welcome!

There's a bunch of on-line converters for just about any imaginable conversion, but I prefer this little freeware app for all the common ones: https://joshmadison.com/convert-for-windows/

Tempest EBS alignment was 340 L [12 ft^3] net: http://www.stiger.com/subtable/ventedtempest.pdf

I'm a big fan of EBS alignments and it's TL variants since they 'dig' low to blend with room/boundary gain while emphasizing the mid-bass ['hit'/'slam'/'punch'].

The DVC385 sims audibly the same as the Tempest in its EBS alignment @ 500W, while the RSS comes up at bit short [Tempest green, DVC385 red, Rss390 blue].

GM
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