Looking for a new SQL driver

[Doxquzme Premium Member]

And big (diameter) coils seem to perform better at their BL limits (ie Dyn & Morel midbass drivers).

It was a few years ago but built two HT subs using these, each fed with a kilowatt plate amp, the low end output would raise the hair on your arms, make your heart skip a beat, pretty impressive.

 

[djdilliodon!]

The peerless sub has a winding width of 2.25”. Not accounting for top plate thickness, that’s 28.5mm of xmax mathematically calculated, with top plate thickness accounted for its probably around 20mm realistically mathematically.

 

[Doxquzme Premium Member]

I don't recall the particulars, but 3.5" top to bottom travel is the linear movement, before being affected or distorting. I'd have to find the articles that discuss it, but that is pretty well documented.

 

[Marve_Lous]

I love my IDMAX 12. Have it in about 1.6 sealed. Bass sounds nice and warm. I’ve been wanting to grab another.

 

[djdilliodon!]

I don't recall the particulars, but 3.5" top to bottom travel is the linear movement, before being affected or distorting. I'd have to find the articles that discuss it, but that is pretty well documented.

That is mechanical movement, not linear. The mathematical calculation is the best way, that is the coil still in the gap (some may add 10-15%). Mechanical movement is when it comes to damage (coil hitting the backplate). Many use this spec along with peak to peak to make a sub appear to have a lot of xmax. The data sheet that shows xmax at 10.4mm may be accurate depending on how thick the top plate is. Looking at the coil again, the 2.25” is the actual full length of coil, not the windings so that spec is probably accurate. The 10.4mm is also mentioned on partsexpress as well.

 

[Doxquzme Premium Member]

That is mechanical movement, not linear. The mathematical calculation is the best way, that is the coil still in the gap (some may add 10-15%). Mechanical movement is when it comes to damage (coil hitting the backplate). Many use this spec along with peak to peak to make a sub appear to have a lot of xmax. The data sheet that shows xmax at 10.4mm may be accurate depending on how thick the top plate is. Looking at the coil again, the 2.25” is the actual full length of coil, not the windings so that spec is probably accurate. The 10.4mm is also mentioned on partsexpress as well.

Correct, my bad. All I know is when watching that thing go, it MOVES like a mofo!

 

[djdilliodon!]

Correct, my bad. All I know is when watching that thing go, it MOVES like a mofo!

Xmax is only part of the puzzle, there is more to it for making a great sub. Bottoming that sucker out will take a lot of work. There are so many subs now poorly designed that it’s very easy to do. With the power handling that sub has you can plug it in the wall no problem

 

[Old_Slapper]

Grab one of these.

https://www.digikey.com/en/products/detail/peerless-by-tymphany/STW-350F188PR01-04/7401300?utm_adgroup=&utm_source=google&utm_medium=cpc&utm_campaign=PMax%20Shopping_Product_Low%20ROAS%20Categories&utm_term=&utm_content=&utm_id=go_cmp-20243063506_adg-_ad-__dev-c_ext-_prd-7401300_sig-Cj0KCQiAw6yuBhDrARIsACf94RUZYGAJSNWWyWSbfciky2SGfxoZGrPTfMGEY05v0yTbT7-CyQHl1lwaAvQMEALw_wcB&gad_source=1&gclid=Cj0KCQiAw6yuBhDrARIsACf94RUZYGAJSNWWyWSbfciky2SGfxoZGrPTfMGEY05v0yTbT7-CyQHl1lwaAvQMEALw_wcB

eBay if you're in a hurry.

Peerless by Tymphany STW-350F 15" Subwoofer 3500W RMS NEW(OPEN BOX) | eBay

Brand new, just taken out of the box to take pictures. These are monster subwoofers made for small enclosures wirh their 7.4" voice coils, and use a lot of power for brute force. I intend to make a pair of awesome DIY home theater subs but never got around to it. 3500w RMS, so they need a big amp.

www.ebay.com

I did two of these ported in a home theater build and they are pretty impressive drivers. 7.5" VC, 3500 watt SQL air pumps! THis is terrible recording where the mic obviously can't handle the output but it gives you an idea!



Don't let the xmax fool you. Read up on this driver, really pretty impressive all the way around.

Is it just me, or do those subs look like they are out of phase?

 

[Buck 5,000+ posts]

Currently owned Stereo Integrity SQL, Adire Brahma, and RF power T1. I’m looking for another good sound quality subwoofer to play with and came across ID Max, are the ID Max similar to the the SI SQL? I’m also looking at the W7 but not sure if the price tag is worth it. Any other brand suggestions would be great as well.

What type of enclosure are you trying to use? And are you doing a vehicle or house or maybe both?

 

[Buck 5,000+ posts]

Ive always like how the DC Level 3 subs sounded

DC Audio Level 3 12 M3 1000w Subwoofer

Shop DC Audio Level 3 10 M3 1000w Subwoofer at the Guaranteed lowest allowed price of 329.99 with 20+ yrs of the best customer service, only at the SSA STORE

store.soundsolutionsaudio.com

I'm a big fan of DC woofers. Their small box size and nice motor strength means you can put a ton of cone area and motor force in a pretty small enclosure vs other similar nature or class woofers, and they just really seem to pump sound out nicely. Might need some big ports, though. You can do like 2 15's in 6-7 cubes with 7000-9000w with DC, at least with vehicles. I'd also like to try the SSA Evil woofers in home audio, due to those subs liking a large sealed and ported box. I think that might really be beneficial with home audio. I mean, the Fsc of the SSA Evils can be iirc like 35 hz with full power 3500w, that's a super low sealed resonance; I actually talked to SSA about this one time. You could make a stupid 4th order bandpass with those that would play subsonic.

EVIL 18" 3500W Subwoofer by SSA®

Shop EVIL 18" 3500W Subwoofer by SSA® at the Guaranteed lowest allowed price of 789.99 with 20+ yrs of the best customer service, only at the SSA STORE

store.soundsolutionsaudio.com

• Fs 25.1 Hz
• Re 0.7 Ohms/coil | 1.6 Ohms/coil
• Qms 7.41 | 7.64
• Qes .59 | .59
• Qts .54 | .54
• Mms 552g
• Cms .70mm/N | .70mm/N
• Sd 1210cm^2 | 1210cm^2
• Vas 144.1l | 144.1l
• Spl 88.4 | 88.4
• Bl 16.9 | 24.1
• Xmax 33 / 33 mm
• Wattage 3500wRMS
• Displacement 0.27cuft

Better link, sorry:

EVIL

Evil 3500w RMS Subwoofer When your sub bass goal is nothing but supreme, unrestrained performance without compromise, the choice is the SSA Evil. The capa

www.ssaudio.com

1st is the 15 2nd is the 18

Sealed	2.5 ft^3	4.5 ft^3
Sealed Optimal	4.0 ft^3	6.25 ft^3
Ported	3.25-4.25 ft^3 @ 29-33hz	6.5-7.25 ft^3 @ 29-33hz
Ported Optimal	4.25-5.5 ft^3 @ 29-33hz	7.25-8.5 ft^3 @ 29-33hz
Sub Outside Diameter	15.625” | 15.625”	18.500” | 18.500”
Cut Inside Diameter	14.125” | 14.125”	16.750” | 16.750”
Mounting depth	11.250” | 11.250”	11.750” | 11.750”

Look at those sealed sizes! SUPER LOWS

 

[Buck 5,000+ posts]

You might also check these out, idk if this would be what you wanted, probably have to run specific type enclosures with this, like a t-line:

IB3 | One Audio USA

The new One Audio IB3v3 Series subwoofer is a massive step forward over the previous models. With a complete redesign ever aspect of the subwoofer was tailored towards being as detailed and articulate as possible while still handling excellent power for increased bottom octave output. Great care...

www.oneaudiousa.com

 

[SlugButter]

I'm a big fan of DC woofers. Their small box size and nice motor strength means you can put a ton of cone area and motor force in a pretty small enclosure vs other similar nature or class woofers, and they just really seem to pump sound out nicely. Might need some big ports, though. You can do like 2 15's in 6-7 cubes with 7000-9000w with DC, at least with vehicles. I'd also like to try the SSA Evil woofers in home audio, due to those subs liking a large sealed and ported box. I think that might really be beneficial with home audio. I mean, the Fsc of the SSA Evils can be iirc like 35 hz with full power 3500w, that's a super low sealed resonance; I actually talked to SSA about this one time. You could make a stupid 4th order bandpass with those that would play subsonic.

EVIL 18" 3500W Subwoofer by SSA®

Shop EVIL 18" 3500W Subwoofer by SSA® at the Guaranteed lowest allowed price of 789.99 with 20+ yrs of the best customer service, only at the SSA STORE

store.soundsolutionsaudio.com

• Fs 25.1 Hz
• Re 0.7 Ohms/coil | 1.6 Ohms/coil
• Qms 7.41 | 7.64
• Qes .59 | .59
• Qts .54 | .54
• Mms 552g
• Cms .70mm/N | .70mm/N
• Sd 1210cm^2 | 1210cm^2
• Vas 144.1l | 144.1l
• Spl 88.4 | 88.4
• Bl 16.9 | 24.1
• Xmax 33 / 33 mm
• Wattage 3500wRMS
• Displacement 0.27cuft

Better link, sorry:

EVIL

Evil 3500w RMS Subwoofer When your sub bass goal is nothing but supreme, unrestrained performance without compromise, the choice is the SSA Evil. The capa

www.ssaudio.com

1st is the 15 2nd is the 18

Sealed	2.5 ft^3	4.5 ft^3
Sealed Optimal	4.0 ft^3	6.25 ft^3
Ported	3.25-4.25 ft^3 @ 29-33hz	6.5-7.25 ft^3 @ 29-33hz
Ported Optimal	4.25-5.5 ft^3 @ 29-33hz	7.25-8.5 ft^3 @ 29-33hz
Sub Outside Diameter	15.625” | 15.625”	18.500” | 18.500”
Cut Inside Diameter	14.125” | 14.125”	16.750” | 16.750”
Mounting depth	11.250” | 11.250”	11.750” | 11.750”

Look at those sealed sizes! SUPER LOWS

I just did a big slot port box for 2 of the SSA 18s in a guys extended cab pickup. 16 cubes after displacement tuned to 30 HZ. Had to take the door off to get it in. Both of the subs had recones done on them recently. He had tiny little amps in this video. I think he now has 2 4500 watt amps strapped. I need to get a new video from them.

 

[mclsound 10+ year member]

Sensitivity..88.4
I'd be curious what it would be at 40hz

 

[denim 5,000+ posts]

Excellent choice on the SSA Evil's.