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DIY Planar magnetic Hybride
DIY Planar magnetic Hybride
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Old 9th August 2012, 02:26 PM   #71
JAMESBOS is offline JAMESBOS  England
diyAudio Member
Join Date: Jan 2007
Location: wigston leics england

46 rows on this re-design, using the 3mm tape. Easier to use than 4.5mm tape used previously. Prefer the horizontal design seems to give better bass than the vertical layout. Although you get more turns using horizontal than vertical position on diaphragm, which is harder to place on diaphragm, more fiddling. Resistance 6.7 ohms give or take a couple of tenths.
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Old 9th August 2012, 02:48 PM   #72
Iamimdoc is offline Iamimdoc
diyAudio Member
Join Date: Aug 2011
Default Would appreciate a little more help

The magnets are attached (glued, magnetically attached, other?) to a steel mesh grill - yes/no? - or makes no difference as to "grill material"?

Magnets are arranged in alternating polarity by rows ? (ie one end is "North" and adjacent is "South") - yes/no?

Could you give link to magnets - exactly - ie where to purchase or what to look for? Possibly in US if you are familiar. If not then in UK as I have relatives.

Same for tape - link, thickness, material, etc.

I have Mylar so will use this as membrane

INITIAL Current flow in tape makes no difference as it alternates also row by row? - or is there an initial orientation with respect to magnet polarity that needs to be considered?

Tape is just hooked to amplifier outputs - no other circuitry required?

Response to 20Hz is measured or estimated?

SPL's that can be obtained - your estimate

Other "gotchas" to be aware of.

Thanks for help.
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