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25th Anniversary power handling (Read 619 times)
Alex
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Posts: 113
25th Anniversary power handling
08/11/20 at 01:58:13
 
Hi folks,

I am contemplating building an Open Baffle for Lii's Crystal-10 and the W-15. Does anyone know if the SE84UFO25 produces enough power to drive the W-15?
The specs on the W-15 read as the following:
Technical Data:
1. Related power Maximum power   100 150W
2. Nominal inpedance Z   8+8 Ohm
3. Frequency response   fu-5000 Hz
4. Mean sound pressure level   91dB(2.83V/1m)
5. Resonance frequency fs   28 H

I do plan on having an XO built as well.

Thank you folks.
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Geno
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Posts: 981
Re: 25th Anniversary power handling
Reply #1 - 08/11/20 at 02:27:48
 
Hi Alex. A good way to handle this is to have a separate subwoofer amp to drive the W-15s. For example, I have Crystals in their own baffles, with 12 woofers in their own baffles, as well as a powered sub.

The Crystals, subwoofer amp, and the powered sub are all three connected to the amplifier speaker terminals. Then the speaker connections on the subwoofer amp are connected to the W-15s.

The sub amp has crossover and volume controls. For example, mine is crossed at 80hz. This way, frequencys are split between the Crystals and the W-15s.
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SE84UFO(25th Mods)
CSP3
PS Audio DSDAC JR / Cambr.Audio CXC / LRaven AudioPC / ZBIT
Technics 1210MK5(KAB Mods)-KAB/Ortof ProS 40 cart / ZP3(25th Mods)
Otari MX5050 R2R
Decware ZLC
Alnico Betsy Baffles OR Crystal 10 Baffles
(2) 12" Lii Bass Baffles
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Alex
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Posts: 113
Re: 25th Anniversary power handling
Reply #2 - 08/11/20 at 02:37:22
 
Thanks for the response Geno. And you system sounds good with this setup?
The person building my XO suggested i get the following amp for the W-15.
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Geno
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Without music, life
would be a mistake.
Nietzsche

Posts: 981
Re: 25th Anniversary power handling
Reply #3 - 08/11/20 at 02:58:21
 
I love the sound with this setup. What sub amp are you considering? Im using the Crown XLS 1002 thanks to forum member Palomino.
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SE84UFO(25th Mods)
CSP3
PS Audio DSDAC JR / Cambr.Audio CXC / LRaven AudioPC / ZBIT
Technics 1210MK5(KAB Mods)-KAB/Ortof ProS 40 cart / ZP3(25th Mods)
Otari MX5050 R2R
Decware ZLC
Alnico Betsy Baffles OR Crystal 10 Baffles
(2) 12" Lii Bass Baffles
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Alex
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Posts: 113
Re: 25th Anniversary power handling
Reply #4 - 08/11/20 at 03:04:36
 
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Alex
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Posts: 113
Re: 25th Anniversary power handling
Reply #5 - 08/11/20 at 03:07:32
 
That's an expensive amp Geno. Who knows, I may go for it. The XO that will be built is Lionidas OB XO.
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Geno
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Without music, life
would be a mistake.
Nietzsche

Posts: 981
Re: 25th Anniversary power handling
Reply #6 - 08/11/20 at 03:56:03
 
If you go Dayton, the SA100 would serve your needs better. Thats what I had before. Pretty inexpensive.

Ive followed Lionidas pretty closely on the Lii Website. Pretty cool stuff. Im not sure what hes using for power, and how he has that power distributed.
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SE84UFO(25th Mods)
CSP3
PS Audio DSDAC JR / Cambr.Audio CXC / LRaven AudioPC / ZBIT
Technics 1210MK5(KAB Mods)-KAB/Ortof ProS 40 cart / ZP3(25th Mods)
Otari MX5050 R2R
Decware ZLC
Alnico Betsy Baffles OR Crystal 10 Baffles
(2) 12" Lii Bass Baffles
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Alex
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Posts: 113
Re: 25th Anniversary power handling
Reply #7 - 08/12/20 at 02:32:35
 
So you do not have a crossover on the Crystal, just the woofer? I thought the way it would work would be the XO would channel the highs and mids to the Crystal 10 while the low signal would be channeled to  the woofer. It seems like your setup only has the XO on the woofer. Does this mean some of the bass is also going to the Crystal 10?
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Geno
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Without music, life
would be a mistake.
Nietzsche

Posts: 981
Re: 25th Anniversary power handling
Reply #8 - 08/12/20 at 17:51:32
 
All of the Lii drivers are full range. No crossover required.
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SE84UFO(25th Mods)
CSP3
PS Audio DSDAC JR / Cambr.Audio CXC / LRaven AudioPC / ZBIT
Technics 1210MK5(KAB Mods)-KAB/Ortof ProS 40 cart / ZP3(25th Mods)
Otari MX5050 R2R
Decware ZLC
Alnico Betsy Baffles OR Crystal 10 Baffles
(2) 12" Lii Bass Baffles
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Alex
Seasoned Member
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Posts: 113
Re: 25th Anniversary power handling
Reply #9 - 08/16/20 at 02:42:28
 
Thank you Geno. Just trying to get the best sound possible.... even though my Crystals sound very good right now.
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GroovySauce
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Posts: 107
Re: 25th Anniversary power handling
Reply #10 - 08/19/20 at 20:13:06
 
Alex, Looks like we are working in the same direction.

I currently have 2 C10. I'm looking to get 4x W15 and make a XO. I'm planning on crossing them over quite high. 500-1000hz. Hard to say until I can play with the W15. In this case I would use a XO for both the C10 and W15s

I'm a complete newbie on DIY speakers, so this is might be more of a learning experience for me than useful or accurate information.

Geno offers a very practical solution, which I'm guessing delivers great results.

If you go with the plate amp option IF the C10 naturally rolls off at let's say 150hz you can then use the XO and gain on the plate amp to match the frequency and levels so you have a very smooth frequency response. In this case you wouldn't need a XO on the C10 at all which might be the ticket you are looking for.

Check out GR Researchs Youtube channel the first dozen or so of their Tech Talk series I found very educational.

Keep us posted!
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