Phones for Quickie

[Paul Birkeland]

Ah, OK, well, that is the tap that we typically used, wired as an autoformer with the whole primary winding involved.  This makes essentially a 4K:250 transformer, which means that high impedance and high efficiency headphones are a good match.

I haven't tried Grados on the lower taps myself, but my gut feeling is that there won't be enough power available for them, but your mileage may vary.

-PB

[Paul Joppa]

THe problem with the Specos is that there were two versions, both with the same part number. The large Speco was about 2.2 inches between mounting holes, the small one 1.8 inches. I believe I have posted wiring and impedances for each of them.

[mcandmar]

You did indeed...

(https://forum.bottlehead.com/proxy.php?request=http%3A%2F%2Fbottlehead.com%2Fsmf%2Findex.php%3Faction%3Ddlattach%3Btopic%3D5829.0%3Battach%3D5080%3Bimage&hash=1bd5b752393d770191d8fa7102e5b9f3ee0e2fbf)

[20fenix08]

A pretty decent sounding pair of headphone with high sensitivity and high impedance; I would suggest Urbanears Plattan. You can find them in stock at most BestBuys. You can find great deals online if color is not important. Plattan specs: sensitivity=115db; impedance=60ohms.

[Paul Birkeland]

impedance=60ohms.

For the Speco modified Quickie, 250 Ohms is a good starting point.

-PB

[Paul Joppa]

For the Speco modified Quickie, 250 Ohms is a good starting point.

-PB

That would be the "old speco" ... the "new" version should drive 60 ohms quite well.

[fullheadofnothing]

115dB/...?

Unspecified specifications are so fun!