Trevor Wilson wrote:



**I should also mention the (in)famous Gale 401 speaker. UK designed and
built, with an impedance curve dipping to around 1.8 Ohms in the
mid-bass region.

** Not true at all.

The Gale 401 used two nominal 8 ohm woofers ( 5.6ohms DC ) in parallel, with a 3.3mH inductor in series. The box was sealed so the impedance of the woofers rose to a maximum at resonance and fell to a minimum around 250Hz.

http://0339436.netsolhost.com/WordPr...chematic-4.jpg

The minimum *possible* impedance at 250 Hz calculates to 6.3 ohms.

Warm the voice coils up a bit with bass and you will see 8 ohms or more.

Reviews said the speaker's impedance averaged 8 ohms - as claimed.


In fact, the designer of the above-mentioned amplifier
owned a pair of Gale 401s back when they were first released and was
part of the reason why he designed his amplifiers with such prodigious
current ability.


** Really ??

That would have been a big mistake for Mr Stein.



...... Phil