Mark Fenlon's New CHP-70 (note the "P")

markaudio · 8th October 2009, 11:16 AM

Hi Guys,
Here's my all new CHP-70 driver. Note the all custom colour and tone matching. It's only available in Japan at this time. Maybe going to Germany soon.

Paper cone unit, centre bonded cap. Paper is made in Japan, forming done in Taiwan. As per my custom, it's 100% custom built.

Revc = 3.6 Ohm
Fo = 66Hz
Sd = 50 Cm/2
Vas = 5.0 Litres
Cms = 1.394N/M
Mmd = 4.0g
Mms = 4.2g
Bl = 2.99 T/M
Qms = 3.114
Qes = 0.701
Qts = 0.572
Levc = 0.043 mH
No = 0.195%
Pwr = 18 W
Pwr Max = 36 W
Cone Dia = 71-mm

Scottmoose · 11:36 AM

Ha! Look at that extension.

I'm seeing a driver that's flat to 15KHz, gentle roll-off of the extreme top to keep things nice & smooth sounding & a -12dB point at about 25KHz. I love the FR that's engineered into these units -subtle lift to counter step loss, slight dip in the sibilence zone lifting up a touch more to inject some presence, & ~ flat until that final slow descent. I bet the Japanese go ape over these things; it's exactly the sort of thing they like.

Geek · 8th October 2009, 11:38 AM

I have a craving for white chocolate right now

Very stylin' ... I think a visit to Bob is in order for a listen.

Cheers!

markaudio · 8th October 2009, 11:44 AM

Hi Scott,
Arrrrrr....... So you've seen my cunning plan (et al. Black Adder).
Correct, and from what Norio San tells me, I may be busy boy in the factory.

Hi Gregg, sure, give Bob a call.

markaudio · 12th November 2009, 03:16 PM

CHP-70 in a beautiful boxes - source is Linfof site in Japan

http://masahi.cool.ne.jp/linfofbbs/j...ickup&num=6196

Mark.

planet10 · 12th November 2009, 07:50 PM

I like white

dave

Peter Menting · 12th November 2009, 08:32 PM

Nothin' like a dovetail to make things really look sharp!

Pete

markaudio · 12th November 2009, 10:45 PM

Hi Peter,
Long time, hope you're well and enjoying OB.
Yep, a round of applause to the Japan guys, they do some fab work. I wish I had their wood-work skills.

Mark.

Peter Menting · 13th November 2009, 01:20 PM

Hi Mark; Yeah I'm still here after a nasty bout with the Flu! Still enjoying my Alpair 10/ Alpha 15 "H" baffle combo--hard to beat IMHO! Might be fun to try the "12's" with the Goldwood "18" ----maybe I can even work some dovetails into an OB!
Glad your products are doing well.

Pete

Musik007 · 6th January 2010, 02:32 PM

The beautiful CHP-70 drivers match oakwood cabinets.

8th October 2009, 11:30 AM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Ha! Look at that extension. I'm seeing a driver that's flat to 15KHz, gentle roll-off of the extreme top to keep things nice & smooth sounding & a -12dB point at about 25KHz. I love the FR that's engineered into these units -subtle lift to counter step loss, slight dip in the sibilence zone lifting up a touch more to inject some presence, & ~ flat until that final slow descent. I bet the Japanese go ape over these things; it's exactly the sort of thing they like. Last edited by Scottmoose; 8th October 2009 at 11:36 AM.

12th November 2009, 07:50 PM	#6
planet10 diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	I like white dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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8th October 2009, 11:38 AM	#3
Geek diyAudio Member Join Date: Sep 2004	I have a craving for white chocolate right now Very stylin' ... I think a visit to Bob is in order for a listen. Cheers!

8th October 2009, 11:44 AM	#4
markaudio diyAudio Member Join Date: Nov 2008	Hi Scott, Arrrrrr....... So you've seen my cunning plan (et al. Black Adder). Correct, and from what Norio San tells me, I may be busy boy in the factory. Hi Gregg, sure, give Bob a call.

12th November 2009, 08:32 PM	#7
Peter Menting diyAudio Member Join Date: Jul 2003 Location: Blackstone VA	Nothin' like a dovetail to make things really look sharp! Pete

12th November 2009, 10:45 PM	#8
markaudio diyAudio Member Join Date: Nov 2008	Hi Peter, Long time, hope you're well and enjoying OB. Yep, a round of applause to the Japan guys, they do some fab work. I wish I had their wood-work skills. Mark.

13th November 2009, 01:20 PM	#9
Peter Menting diyAudio Member Join Date: Jul 2003 Location: Blackstone VA	Hi Mark; Yeah I'm still here after a nasty bout with the Flu! Still enjoying my Alpair 10/ Alpha 15 "H" baffle combo--hard to beat IMHO! Might be fun to try the "12's" with the Goldwood "18" ----maybe I can even work some dovetails into an OB! Glad your products are doing well. Pete

6th January 2010, 02:32 PM	#10
Musik007 diyAudio Member Join Date: Nov 2009	The beautiful CHP-70 drivers match oakwood cabinets.

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