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Purifi’s PTT6.5W04-01A woofer group buy
Purifi’s PTT6.5W04-01A woofer group buy
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Old 8th February 2020, 09:32 PM   #61
mainframe99 is offline mainframe99
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I'm going to be building the SPK5 kit for starters before trying it out in something maybe floorstanding later on, has anyone else tried to model that crossover? I get this, was only using spl trace of data from hificompass so probably way off and will get measurements of the drivers in the box when its built.


PURIFISPK5REV1.10.png
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Old 8th February 2020, 11:44 PM   #62
Botte is online now Botte  United States
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Try inverting the phase on the AMT
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Old 9th February 2020, 06:59 PM   #63
kims is offline kims  Denmark
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The hificompass measurememt is on a wider test baffel so you are missing the baffelstep in your simulation.
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Old 10th February 2020, 10:42 AM   #64
wobba is offline wobba
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In the SPK5 Design Document, Purifi has specified 85% Cotton, 15% Polyester, 370g/m^2 damping material.

Is this readily available anywhere?
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Old 10th February 2020, 05:37 PM   #65
HammerSandwich is offline HammerSandwich
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Quote:
Originally Posted by mainframe99 View Post
... has anyone else tried to model that crossover? I get this, was only using spl trace of data from hificompass so probably way off and will get measurements of the drivers in the box when its built.
My SPK5 PDF shows a 22uF cap where you have 10uF.
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Old 10th February 2020, 07:02 PM   #66
Norman Tracy is offline Norman Tracy  United States
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Join Date: Apr 2003
Location: Tulsa OK USA
Group Buy status 2-10-2020

Last week participants' list was frozen. Participants have confirmed their orders and provided email and shipping addresses. The order count (PTT6.5W04-01A woofers 34 units and PTT6.5PR-01A passive radiators 12 units) has been sent to Purifi and I expect quote including Denmark to USA shipping costs this week.

Individuals' second leg within USA shipping costs are estimated. They range $25 to $35 for a pairs of woofers, for orders with passive radiators or four woofers USA shipping costs range $45 to $75. Your individual cost will be sent via private email once we have the quote from Purifi. Estimates made assuming UPS ground. If you prefer a different carrier or faster delivery for USA shipping leg that can be arranged however be advised saving a couple of days doubles USA shipping cost. I refer to 'USA shipping' because Canadian participants are shipping to USA addresses.

Participant list:
Norman Tracy
johngore
mordikai
xrk971
racingpht
cpdk
ramenconnoisseur
anonymous
jmpsmash
Paul Ebert
ani101
jsy
DaveFred
hallcon83
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Old 10th February 2020, 10:10 PM   #67
mainframe99 is offline mainframe99
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Quote:
Originally Posted by HammerSandwich View Post
My SPK5 PDF shows a 22uF cap where you have 10uF.

See the newer v1.10 PDF on the website
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Old 13th February 2020, 04:58 PM   #68
Norman Tracy is offline Norman Tracy  United States
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Join Date: Apr 2003
Location: Tulsa OK USA
Group Buy status 2-13-2020

Working answering questions from Purifi related to creating group's proforma invoice. Shipments are not normally insured, the up charge to insure is ~$14 for each GB participant so I have advised we DO want Denmark to USA shipment insured. Also setting up with customs broker to clear shipment into USA.

I expect to have Purifi proforma invoice Friday or Monday and will then compute each GB members' individual cost and email those to the group. I will post a notice to this DIYAudio thread advising GB members to check for that email once it has been sent.
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Old 13th February 2020, 05:08 PM   #69
xrk971 is offline xrk971  United States
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Purifi’s PTT6.5W04-01A woofer group buy
I am all for insurance on something this big.
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