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Old 2nd March 2010, 11:59 PM   #31
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If you want to stay with a paper/nomex cone the Peerless 830845 appears to still be available. For how much longer I'm not sure......
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Old 4th March 2010, 11:36 PM   #32
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Hi Cokewithlime,

In fact I have two 830845 borrowed from a friend, but they need a large enclosure (80 to 90l) due to its high Qts. I was thinking in something a little bit smaller...
What about the Alu-cone? The FR seems to be pretty flat for a 12'' driver...

Any comments about the 835017???

Thanks!
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Old 5th March 2010, 04:06 AM   #33
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Quote:
Originally Posted by filipemacedo View Post
Hi Cokewithlime,

In fact I have two 830845 borrowed from a friend, but they need a large enclosure (80 to 90l) due to its high Qts. I was thinking in something a little bit smaller...
What about the Alu-cone? The FR seems to be pretty flat for a 12'' driver...

Any comments about the 835017???

Thanks!
Sorry, I haven't tried the 835017 Alu-cone version of the XXLS series as yet. But my guess knowing Peerless and their reputation is that it should perform and sound very much like all the earlier versions of XXLS series drivers.
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Old 5th March 2010, 06:02 PM   #34
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Hi,
Here you have the test box, simulation and measurements for the 830845!
The measured response is near field (in front of dustcap) and with low-pass active filter.

I'll try to find some reviews on the 835017. Maybe I'll buy them next week...

Regards
Attached Images
File Type: jpg DSC05734_1.JPG (337.9 KB, 341 views)
File Type: gif CB Response Peerles 1x830845.gif (21.5 KB, 331 views)
File Type: jpg 830845_filter.jpg (75.4 KB, 278 views)
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Old 6th July 2010, 09:32 PM   #35
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Hi,

I finally managed to buy two 835017, and they look great! I already did some experiments, and they sound great as well!
As soon as I can I'll post some results.

BTW, if anyone is interested, I can get some OEM 830500! I'm going to buy two of them very soon!
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Old 4th August 2012, 11:13 PM   #36
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Default Please help man !!!

Quote:
Originally Posted by Norcad View Post
The Peerless XLS12 has been my friend for many years
Well, two of them and the oldest is four years old to be exactly.

I started with the passive solution, and the most important experience is that you need TWO passive radiators.

After a year or so, I build an closed enclosure instead, and I have never looked back! They play music much better this way. Why I dont know for sure. Maybe its the group delay?

As I said; I use two of them, in 45L boxes and driven by two Hypex DS4.0 subamps. This amps has a one band eq and +6dB is what it takes to make it play flat.

And with four of these you could really play LOAD!

Here you can see some measurements I have done in my home cinema.
The first is one 830500 + 2x 830548 (425gr each) in a 49L box
The second is one 830500 in 45L closed box
And the third is the same as no two, with +6dB "bassboost"
Dear friend....is just amazing what you achieved building those beasts....

I was wondering if you can help me.


I have a set of Bookshelves The JBL s38II.here some specifications:


Here some specifications.(See Attached Pictures as well)


Nominal Impedance 8 ohms
Max Amp Power 175 watts
Frequency Response 45Hz 20kHz (3dB)
Sensitivity 89dB (1 watt @ 1 meter)
Crossover Frequencies 800Hz, 3200Hz






Basically.....I need some help Building the subwoofers with one passive radiator to match each bookshelf speaker.


As you see in the specifications of the JBLs38II....... we see that these bookshelves go all the way down to 45hz...I need the woofers to work from 45Hz all the way down to maybe 20Hz,18hz or the best flat response available without sacrificing performance.Your recommendations will be greatly appreciated man. I will drive then with power amps at the back of each enclosure.






Thank you in advance.


Gio.
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File Type: jpeg x109S38ii.jpeg (39.1 KB, 60 views)
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