sorry Jac me old maaaate, they might be semsitive but they're not really efficient, they're a bastard of a load the D700

Posted by Timbo in Oz (A) on February 28, 2007 at 20:38:24

In Reply to: Good Lord posted by revjac on February 28, 2007 at 13:40:49:

MC reviewed them in July 1993 for HFN&RR and rated tham as nearer a 4 ohm load than a 6ohm load. And they can handle 250 watts of power pretty easily and they can drive lage rooms and DE does have a large room IIRC.

Collioms noted how easily the load killed amps at high levels.

I would think that you'd need a 'big PSU' type BIGG valve amp, SS diodes, chokes and lotsa capacitance say a pr of ARC 100 watters tapped for 4 or less ohms, to make them kick arse.

From 100 hz to 300 or so the measured impedance under 1 watt drive is 3.1 ohms, and the phase angle is a bit fierce down there in the bass, too. So CURRENT demands are high! How low the Z might go and under heavy drive, as per Matti Ottala's findings*, we don't know.

* EG. the supposedly easy load (> 8 ohms effective under test conditions) of the Yamaha NS1000M, (a pr of which I didn't buy and bought the spheres) can fall to 2.5 ohms in the bass and midbass under hard drive. Linn's Sara's and Isobariks were a good deal worse!!!

Note that IME and others the 1000's LOVE Quad II and Leak St20's.

;-)!!!

Warmest

Timbo in Oz
The Skyptical Mensurer and Audio Scrounger

And gladly would he learn and gladly teach - Chaucer. ;-)!

'Still not saluting.'

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Follow Ups Full Thread

Topic - Peak Listening Levels - Some analysis and some thoughts... - DevillEars 09:22:27 02/28/07 (16)

Good Lord - revjac 13:40:49 02/28/07 (3)

Re: Good Lord - DevillEars 21:16:18 02/28/07 (1)

OK then!!! - revjac 08:44:22 03/01/07 (0)

sorry Jac me old maaaate, they might be semsitive but they're not really efficient, they're a bastard of a load the D700 - Timbo in Oz 20:38:24 02/28/07 (0)

Peak Listening Levels? my plans!!! ????? - Timbo in Oz 12:54:37 02/28/07 (0)

Look closely at your remote..... - Bruce Kendall 11:08:14 02/28/07 (5)

This is the one..... - mkuller 14:10:59 02/28/07 (0)

"Being There", with Peter Sellers - Todd A. 12:58:22 02/28/07 (1)

Re: Sellers to Shirley McLaine in the back of the limo - grinagog 04:48:12 03/02/07 (0)

Re: Look closely at your remote. - Classe' remote has four programmable function buttons... - DevillEars 11:16:51 02/28/07 (1)

Hopefully you still have your manual. - Bruce Kendall 11:36:56 02/28/07 (0)

A sometimes rather different perspective... - feet's too big 09:49:55 02/28/07 (4)

No arguments on either score... - DevillEars 10:05:27 02/28/07 (3)

Could you see your way clear... - feet's too big 10:21:46 02/28/07 (2)

'twould be only a pleasure, my friend, were it but possible... - DevillEars 10:52:03 02/28/07 (1)

That seems to have been a pleasantly reserved "semi-rant"... - feet's too big 11:35:37 02/28/07 (0)

Follow Ups

sorry Jac me old maaaate, they might be semsitive but they're not really efficient, they're a bastard of a load the D700 - Timbo in Oz 20:38:24 02/28/07 (0)

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