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Frugel-Horn Mk3 Builds & Build Questions
Frugel-Horn Mk3 Builds & Build Questions
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Old 1st February 2011, 03:23 PM   #161
Godzilla is offline Godzilla  United States
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Elegant design! Love it!
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Old 1st February 2011, 04:20 PM   #162
planet10 is offline planet10  Canada
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Frugel-Horn Mk3 Builds & Build Questions
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Old 1st February 2011, 04:35 PM   #163
chrisb is offline chrisb
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very tasteful indeed - I love the color of the paper - blends very nicely with your veneer finish


silly good little driver this one, n'est-ce pas?
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Old 1st February 2011, 06:12 PM   #164
Toppsy is offline Toppsy  United Kingdom
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silly good little driver this one, n'est-ce pas?
I have to agree with you there Chrisby. I much prefer this CHP70 paper cone version to the metal cone CHR70.

As you have commented in the past.........makes one wonder what Mark Fenlon could achieve with paper coned versions the Alpair10 and Alpair12
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Old 1st February 2011, 06:20 PM   #165
chrisb is offline chrisb
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Originally Posted by Toppsy View Post
I have to agree with you there Chrisby. I much prefer this CHP70 paper cone version to the metal cone CHR70.

As you have commented in the past.........makes one wonder what Mark Fenlon could achieve with paper coned versions the Alpair10 and Alpair12

we can hope
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Old 5th March 2011, 09:15 AM   #166
MilesCampbell is offline MilesCampbell  United Kingdom
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Hello All

A number of questions if I may

- Driver choice ?? Fostex a good starting point for a first FH build ?

- Running them in ?? Best strategy ?? Best box ??

Thank you
Miles
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Old 5th March 2011, 10:01 AM   #167
planet10 is offline planet10  Canada
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Frugel-Horn Mk3 Builds & Build Questions
Driver choice is growing steadily. Everyone will have their favorite. Room/amp will also play a role.

Toppsy prefers CHP70, Chris likes FE126eN^2, i'd choose Alpair7eN. Other builds have used A7, FE126En. A7eN, FE126eN^2 are going out with flat-paks sold, and the other will house FE108eS (one of Ed's when he cleared them out )

We have had EL70eN and CHR70eN in them. And we'll be trying FE127eN and if i can talk Jeff into it (probably not hard), his FX120eN.

You have to weigh price, room, amp, sonics and choose yourself (BTW, EL70, CHR, CHP, A7, FE126/7, FE108eS, and probably FX120 can all be installed in the same cutout if you don't do a rebate).

I have a dedicated break-in bench. Hook the drivers up naked, set the FM station to lowish volume, turn it on and come back a couple weeks later.

dave
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Old 5th March 2011, 10:22 PM   #168
Toppsy is offline Toppsy  United Kingdom
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Here with attached my cutting schedule for 18mm thick 8' x 4' sheet.

This can easily be cut on a flat bed circular saw.
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Old 5th March 2011, 11:49 PM   #169
planet10 is offline planet10  Canada
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Here is my version of an 18mm cut plan for 18mm.

Designed to optimize the size of the largest offcut*, and to maintain grain pattern -- i suspect many of these will be natural BB finish.

* one chunk just slightly over 25 x 29", large enuff to make a stabalization base (shown ghosted out in blue)

I have a whole bunch of pages to add to the document, will add this & the other pages over the next day or so, and also try to get a 1st page for the website so that it can be hosted there.

dave
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File Type: pdf cut-4x8-18mm.pdf (59.6 KB, 241 views)
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Old 6th March 2011, 07:19 AM   #170
MilesCampbell is offline MilesCampbell  United Kingdom
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Hello

Thanks Dave.. A couple of queries regards the drawing for the cabinet

1. The drawings suggest the front baffle can sit "on" or 'in' the cabinet, but by design which is correct ? Would a rounded edge to the front baffle be an improvement ?

2. Please confirm that the baffle is at 90 degrees to the base ?

3. For the best practice should the driver sit "in" a recess flush on the baffle front ?

4. There is no mention on the plan about the extent of flaring inside the baffle for the driver as too much would effect of rigidity of the baffle and the driver mounting.

5. Looking at the design the most critical part of the design it seems is the top left hand corner of the cabinet. Would it make more sense to dimension the drawing from that point for each material thickness ?

6. The plan infers that a dimensional accuracy of 0.1mm is called for which is going to be quite a challenge without the use of modern methods! What are the tolerance limits for the design and which are the MOST critical ?

Thanks
Miles
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