New Sub Project - AV15 *PIC*

[Jason]

Provided Link: More Pics


Acoustic Elegance (formerly Stryke) is gearing up to go back into production, building their own drivers as well as some of the older Lambda designs. John had a couple of prototypes of the new version of their AV15 sub and I was able to score one. It's not identical to what the production version will be, but pretty close. Mine has a thick aluminum sleeve around the pole piece, both to wick heat away from the coil as well as to reduce inductance (i.e. less compression, harmonic distortion, etc). The production version will use a copper sleeve. This is a monster of a driver - 23mm xmax, 1500W power handling, and built like a tank.

The parameters allow for a variety of uses. I'm using mine for HT duties, and it will be going in about a 6 cuft box tuned around 20 Hz. You have to get up to around 1500W before you start running into xmax issues (below about 15 Hz).

I'm going to attempt a curved sided box, so we'll have to see how that works out. If nothing else, Andy should be proud I'm stepping outside the (square) box.

[Wolf]

Looks pretty good.... *PIC*




Aesthetically, etc. Should hit the low-lows!
Later,
Wolf

PS- Mine is still bigger! *snicker*

[Andy_G]

Re: New Sub Project - AV15


> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

But of course. I know how difficult it can be to push your ideas and carpentry skills beyond the normal box. I used to build just boxes once ;-)) (a long time ago)

Just think it through and take your time.

[mikebw]

Re: New Sub Project - AV15


Wow, that sub is crucial. Any idea how thick the cone material is?

Curved is definitely in lately. Not sure if you have looked but there are a number of projects on the forum in that style. If you need help when it comes to executing the design look up the term "kerfing" and you should see how it's done. For a sub with that kind of power you will definitely need a strong enclosure, so think THICK baffle and well placed braces. For the curved sides I would imagine you will need 2 layers of kerfed MDF, and then perhaps a veneer to suit your design.

> Acoustic Elegance (formerly Stryke) is
> gearing up to go back into production,
> building their own drivers as well as some
> of the older Lambda designs. John had a
> couple of prototypes of the new version of
> their AV15 sub and I was able to score one.
> It's not identical to what the production
> version will be, but pretty close. Mine has
> a thick aluminum sleeve around the pole
> piece, both to wick heat away from the coil
> as well as to reduce inductance (i.e. less
> compression, harmonic distortion, etc). The
> production version will use a copper sleeve.
> This is a monster of a driver - 23mm xmax,
> 1500W power handling, and built like a tank.

> The parameters allow for a variety of uses.
> I'm using mine for HT duties, and it will be
> going in about a 6 cuft box tuned around 20
> Hz. You have to get up to around 1500W
> before you start running into xmax issues
> (below about 15 Hz).

> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

[DougP]

Re: New Sub Project - AV15


> Acoustic Elegance (formerly Stryke) is
> gearing up to go back into production,
> building their own drivers as well as some
> of the older Lambda designs. John had a
> couple of prototypes of the new version of
> their AV15 sub and I was able to score one.
> It's not identical to what the production
> version will be, but pretty close. Mine has
> a thick aluminum sleeve around the pole
> piece, both to wick heat away from the coil
> as well as to reduce inductance (i.e. less
> compression, harmonic distortion, etc). The
> production version will use a copper sleeve.
> This is a monster of a driver - 23mm xmax,
> 1500W power handling, and built like a tank.

> The parameters allow for a variety of uses.
> I'm using mine for HT duties, and it will be
> going in about a 6 cuft box tuned around 20
> Hz. You have to get up to around 1500W
> before you start running into xmax issues
> (below about 15 Hz).

> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

That is a moster of a sub I bet I will be able to hear it at my house.

Doug

[Scott L]

Re: Looks good: WOLFMAN ?


> Aesthetically, etc. Should hit the low-lows!
> Later,
> Wolf

> PS- Mine is still bigger! *snicker*
.................................................. What is that unit there, with a structure behind the woofer, so to speak ?
I ask, because in about a year or so, I'll be doing an I.B. install

Thanks Kindly !

[nick29498141]

Re: Looks good: WOLFMAN ?


>
> .................................................. What
> is that unit there, with a structure behind
> the woofer, so to speak ?
> I ask, because in about a year or so, I'll
> be doing an I.B. install

> Thanks Kindly !

To my knowledge, you won't be finding that driver easily. I was present when he bought it, and found out, though some research, that it was a 1-off prototype from a custom driver company. The closest you'll come to the design in the consumer-market would be...

<A HREF="http://www.memphiscaraudio.com/produ...ails.asp?id=37">http://www.memphiscaraudio.com/produ...ails.asp?id=37</A>

It's based off of the same design.

NK

[Pete Schumacher]

What a beast


> Acoustic Elegance (formerly Stryke) is
> gearing up to go back into production,
> building their own drivers as well as some
> of the older Lambda designs. John had a
> couple of prototypes of the new version of
> their AV15 sub and I was able to score one.
> It's not identical to what the production
> version will be, but pretty close. Mine has
> a thick aluminum sleeve around the pole
> piece, both to wick heat away from the coil
> as well as to reduce inductance (i.e. less
> compression, harmonic distortion, etc). The
> production version will use a copper sleeve.
> This is a monster of a driver - 23mm xmax,
> 1500W power handling, and built like a tank.

> The parameters allow for a variety of uses.
> I'm using mine for HT duties, and it will be
> going in about a 6 cuft box tuned around 20
> Hz. You have to get up to around 1500W
> before you start running into xmax issues
> (below about 15 Hz).

> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

Nice to see John getting back into it. He had some struggles there for a while, but his stuff was always beefy.

[zedguy]

Re: New Sub Project - AV15


You will love the end result, the driver is great. I bought the same one from John and used it sealed in 3 cubes and it sounds excellent. It hardly breaks a sweat with the 500 watt Bash amp that was used with it.

> Acoustic Elegance (formerly Stryke) is
> gearing up to go back into production,
> building their own drivers as well as some
> of the older Lambda designs. John had a
> couple of prototypes of the new version of
> their AV15 sub and I was able to score one.
> It's not identical to what the production
> version will be, but pretty close. Mine has
> a thick aluminum sleeve around the pole
> piece, both to wick heat away from the coil
> as well as to reduce inductance (i.e. less
> compression, harmonic distortion, etc). The
> production version will use a copper sleeve.
> This is a monster of a driver - 23mm xmax,
> 1500W power handling, and built like a tank.

> The parameters allow for a variety of uses.
> I'm using mine for HT duties, and it will be
> going in about a 6 cuft box tuned around 20
> Hz. You have to get up to around 1500W
> before you start running into xmax issues
> (below about 15 Hz).

> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

[ultra680]

Re: New Sub Project - AV15


So is this 15" going out do the RSS 390????

> Acoustic Elegance (formerly Stryke) is
> gearing up to go back into production,
> building their own drivers as well as some
> of the older Lambda designs. John had a
> couple of prototypes of the new version of
> their AV15 sub and I was able to score one.
> It's not identical to what the production
> version will be, but pretty close. Mine has
> a thick aluminum sleeve around the pole
> piece, both to wick heat away from the coil
> as well as to reduce inductance (i.e. less
> compression, harmonic distortion, etc). The
> production version will use a copper sleeve.
> This is a monster of a driver - 23mm xmax,
> 1500W power handling, and built like a tank.

> The parameters allow for a variety of uses.
> I'm using mine for HT duties, and it will be
> going in about a 6 cuft box tuned around 20
> Hz. You have to get up to around 1500W
> before you start running into xmax issues
> (below about 15 Hz).

> I'm going to attempt a curved sided box, so
> we'll have to see how that works out. If
> nothing else, Andy should be proud I'm
> stepping outside the (square) box.

[Jason]

Re: New Sub Project - AV15 *PIC*



Provided Link: More Pics


I'm actually not too scared about the box. For the most part, it's going to be not much different than any other box I've built, aside from the curved sides. I actually picked up a cheap little Ryobi bandsaw for cutting the top/bottom/bracing. Basically, I'll build the box without the sides, including all of the internal bracing, and then I'll use 1/4" material for the sides in multiple layers. The baffle will be 1.5" thick, and the rest will probably just be 3/4". We'll see if 3/4" is adequate for the sides, and if not, I can always add a few extra layers. The pic below is the horizontal internal bracing.

I'm going with dual 4" ports. I won't be running a full 1500W into this thing, so hopefully port noise won't be too big of a problem. I'm still not sure what I'll use for an amp. Originally I was just going to use one of the 350W "Apex Senior" amps from Apex jr., but that seems like WAY underpowering this thing. I've got a QSC USA 900 available that I'll probably give a try first. I think bridged into the ~4 ohm load this thing provides, it should put out a little over 1000W. We'll see how that does.

[Jason]

Re: New Sub Project - AV15


> So is this 15" going out do the RSS
> 390????

Hard to say... they're kind of in different price brackets. The RS drivers are primarily about low distortion "clean" sound, and aren't really designed as extreme xmax drivers. This thing has a lot of similar design goals, with low(er) distortion and good linearity. The pricing on these will probably be higher than the RS drivers, and probably even higher than the Titanics.

[Jason]

Re: What a beast


> Nice to see John getting back into it. He
> had some struggles there for a while, but
> his stuff was always beefy.

Yeah, I'm glad I found him again. I used to have a 15" Lambda sub, and as I understand it, he kind of bought out Nick's old stuff and is making some of the older Lambda designs. I think he's historically had a hard time because he's a small player compared to some other companies, and as such get's the shaft from his suppliers regularly. I think that's basically what did Nick/Lambda in. If you are ever interested, you can check out the forum on the aespeakers site... John has some interesting pics of projects, their shop, and some of their drivers.

[Wolf]

Nick's right...

Provided Link: Link to free-air video...


The assembly is a stacked-frame, dual-spider, DVC 15". There is an inch of coil above the front-plate. The Memphis LVS15 driver is dual-2ohm, and 1000W max, IIRC. Mine is a dual-4, and made by the same company that makes the Memphis LVS15. The Vas is VERY small, and will have an F3 of 25Hz in a 2.6ft^3 tube. I have plans for it that will have a very *burly* aesthetic. Dual 500W BASH amps, and a vented cab are the start of it... I only paid about 65 bucks for this monster at the second annual Tent Sale! Nick tried to fool me into snitching it.....
Later,
Wolf

[nick29498141]

Re: Nick's right...


*burly* aesthetic.

Am I supposed tho think "burl wood" here?

NK