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Frugel-Horn XL for Alpair 10.3/10p, Fostex FF165wk, more
Frugel-Horn XL for Alpair 10.3/10p, Fostex FF165wk, more
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Old 15th February 2018, 05:37 PM   #951
kerux is offline kerux  United States
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I finished my FHXL this past weekend and even though the curved back and front of the sides was cut freehand with a jigsaw the FHXL with A10pen speakers sound amazing. As others have said, the amount of bass produced is amazing.

It is the first time in my stereo system that each instrument could be heard very cleanly and separately.

I put the required amount of stuffing between the back panel and interior panel but did not put any stuffing behind the speakers which the instructions say are optional?

In my man-cave, the speakers sound good at 18 inches from the wall. If I move them closer, it appears the bass lessens and the treble/upper frequencies don't sound as good. This sound leaves the music maybe a bit bass heavy so I need to experiment some more.

Thanks Scottmoose, Planet10, ChrisB for working on the FHXL design. it is easily the best pair of speakers I have heard in awhile.
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Old 15th February 2018, 06:48 PM   #952
chrisb is offline chrisb  Canada
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what amp(s) are you using?
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Old 15th February 2018, 08:15 PM   #953
planet10 is offline planet10  Canada
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Frugel-Horn XL for Alpair 10.3/10p, Fostex FF165wk, more
The stuffing below the driver is used to tune the bass to your room/taste/driver/other kit. It also will tame some of the ripple above the primary harmonic. Try about half of the 80g max to start. Tease very thoroughly.

dave
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Old 15th February 2018, 11:35 PM   #954
planet10 is offline planet10  Canada
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Quote:
Originally Posted by Toby Jug View Post
And what speakers are currently considered best for low power OTL Valve amps please !!
Typically you are ahead with higher imnpedance speakers to have an OTL shine. None of the usual candidates satisfy those requirements. Few drivers are available 16Ω and higher.

One could maybe series connect a pair of drivers to get 16 ohms, but then you might have issues with combing. A stacked FHXL could fill the bill.

Or look to some of the more exotic speakers… likely stretch the budget, and i’d have to get Scott to sim to see if the’d work… AF-1.5 - Voxativ Store. On the face of it, looks like they could benefit from a higher output impedance amplifier.

dave
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Old 16th February 2018, 04:12 AM   #955
kerux is offline kerux  United States
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I am using a Tubelab Simple SE Power Amp with a ECC82 Muchadumbre Tube Buffer.

Thanks for the tip with the stuffing. I will try your instructions.

Andy
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Old 17th February 2018, 08:15 AM   #956
Toby Jug is offline Toby Jug  United Kingdom
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Thanks Gents , more thinking to do then.!
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Old 6th March 2018, 06:16 PM   #957
donovas is offline donovas  South Korea
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im thinkin of building the XL for my main system, but with tangband drivers.

of these two, which one would you suggest for more 'slamming' bass and softer treble?

Tang Band W5-2143 5" Paper Cone Full Range Driver 8 Ohm

Tang Band W6-2144 6-1/2" Paper Cone Full Range Driver 8 Ohm
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Old 6th March 2018, 06:20 PM   #958
planet10 is offline planet10  Canada
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Frugel-Horn XL for Alpair 10.3/10p, Fostex FF165wk, more
I haven’t heard either, i won’t guess. Scott may be able to run some sims to ensure the bass alignment (but he is a little scarce these days), but that will not tell you how they sound.

dave
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Old 6th March 2018, 06:26 PM   #959
chrisb is offline chrisb  Canada
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FWIW, having heard the WB-1772 (8" with whizzer cone), and the smaller 1879, as well as more than a few Fostex with and without whizzers, I'd probably go for the 2143. I've never really cottoned to any FR driver with whizzers, but of course YMMV
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Old 7th March 2018, 06:16 PM   #960
Scottmoose is offline Scottmoose  United Kingdom
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I'll have a gander re the TBs.
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