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Two Pi [message #52683] Sun, 28 September 2008 11:45 Go to next message
themilford is currently offline  themilford
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Registered: May 2009
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Hey guys,

quick questions.

What Capacitor value and Inductor value are used in the current 2PI speakers?

Thanks,
David

Re: Two Pi [message #52685 is a reply to message #52683] Sun, 28 September 2008 12:07 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18726
Registered: January 2001
Illuminati (33rd Degree)

10uF in series with the DX25 tweeter, 16Ω in shunt across the tweeter. The Alpha 10 has a 0.5mH coil in series with it.


Re: Two Pi [message #52686 is a reply to message #52685] Sun, 28 September 2008 12:34 Go to previous messageGo to next message
themilford is currently offline  themilford
Messages: 66
Registered: May 2009
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Thanks Wayne!

Does your tweeter "upgrade" kit come with the cap and resistor?

My poor Audio Note AN-J/SPs foam have started crumbling to dust! So I think I'll build a pair of 2PIs to tide me over until I can refoam or afford new AN woofers... I have an account with New Sensor so I get the Alpha 10s at cost... but I need to grab the Tweets and other parts either from you or Parts express.

Man it sucks not having a stereo!

Cheers,
D



is this a decent candidate for a... [message #52688 is a reply to message #52685] Sun, 28 September 2008 20:30 Go to previous messageGo to next message
themilford is currently offline  themilford
Messages: 66
Registered: May 2009
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PI inspired Alpha10 2-way?

Alesis tweeter/

Specifications:
*Power handling: 40 watts RMS/80 watts max
*VCdia: 1" *Impedance: 4 ohms *Re: 3.0 ohms
*Frequency range: 3,000-20,000 Hz
*Fs: 1,500 Hz *SPL: 93 dB 1W/1m
*Dimensions: A: 3-3/4", B: 3", C: 1-3/4".

* 1" treated fabric dome
* Fully shielded design
* Horn loaded faceplate for high efficiency

http://www.partsexpress.com/pe/pshowdetl.cfm?&DID=7&Partnumber=279-140&ctab=15#Tabs

Re: Two Pi [message #52691 is a reply to message #52686] Mon, 29 September 2008 12:41 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18726
Registered: January 2001
Illuminati (33rd Degree)

Yes, the upgrade kit comes with tweeter, cap and resistor.


Re: is this a decent candidate for a... [message #52692 is a reply to message #52688] Mon, 29 September 2008 12:42 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18726
Registered: January 2001
Illuminati (33rd Degree)

Might work. If you try one, let us know how it sounds!


Re: Two Pi [message #52693 is a reply to message #52691] Mon, 29 September 2008 13:59 Go to previous messageGo to next message
themilford is currently offline  themilford
Messages: 66
Registered: May 2009
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Thanks Wayne!

how much are the tweeter kits from you? Also how much extra to throw in the inductors too?

BTW: which brand/gauge inductors are using these days?


Re: Two Pi [message #52695 is a reply to message #52693] Mon, 29 September 2008 16:17 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18726
Registered: January 2001
Illuminati (33rd Degree)

The tweeter upgrade kits are $30.00. You can find it in the "Parts and Options" section of the shopping cart.

The Vifa upgrade kit was initially introduced in February 2005, when I started using that tweeter in the one π, two π and two π tower loudspeakers.

I removed the Vifa upgrade kit from the shopping cart after two years, after I thought just about everyone that was going to upgrade their older speakers had already done so. Some people get confused and think the upgrade should be added to new kits, but in fact, it's already included in all new kits since February 2005.

So but anyway, the Vifa upgrade kit is there now. Might leave it there for a while, might not.

All of my crossovers come standard with good quality polypropylene capacitors and pure copper air core coils. The entry level stuff is Jantzen 18 guage coils, Solen caps or equivalent. I have also used Jantzen Cross-caps, Erse poly caps and Daytons for entry level parts, but nothing of lesser quality.

There are options available for audiophile parts in the three π and larger speakers. You can choose larger guage pure copper coils, Auricaps and Mills resistors.

You don't call your part on the entry level build, but you can specify components by size and brand as an option. For example, you can choose 15 guage coils, Auricaps and Mills resistors.

See the "Crossover" page of the "Parts and Options" section for available options. Click on any of the crossovers and you will see a list of options with drop-down menus showing what's available.


Re: Two Pi [message #52702 is a reply to message #52695] Fri, 03 October 2008 00:39 Go to previous messageGo to next message
themilford is currently offline  themilford
Messages: 66
Registered: May 2009
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Aww crap!

Sorry Wayne... I was impatient and ordered the tweets from Parts Express... I hadn't checked my messages or the board. Sorry you went to all the trouble.

I appreciate your help. BTW can I get those Two Pi plans again.

Cheers,
David

You've got mail! [message #52703 is a reply to message #52702] Fri, 03 October 2008 19:39 Go to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18726
Registered: January 2001
Illuminati (33rd Degree)


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