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Old 19th December 2002, 06:51 PM   #31
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Quote:
Originally posted by dhaen

Good for the source, but the destination wiring must be short.
Thanks John, good point. I always put the networks at the amp inputs or between amp stages, and I should have added it for clarity.

Which ribbons? All the ones I've ever heard sounded awful (to my ears), although the new ESg range looks interesting.

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Old 19th December 2002, 07:04 PM   #32
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Bi-amping can yield huge improvements, and with SE amps removing the reactive XO components makes the amps a lot happier.

The PLLXO parts can be put between stages inside your amps for even greater simplification.

dave
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Old 19th December 2002, 07:09 PM   #33
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Quote:
Originally posted by Brett
Which ribbons? All the ones I've ever heard sounded awful (to my ears), although the new ESg range looks interesting.
The only ones i've heard for any extended time were the Decca London ribbons, and they were very fine -- and horn loaded so they would have a better chance of integrating into your systen Brett.

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Old 19th December 2002, 07:12 PM   #34
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Default DECCA LONDON

Hi Dave,

Quote:
better chance of integrating into your systen Brett.
I'm not sure about the effeciency of the ribbons on their own but
didn't the Decca London have an overal effieciency of ~88dB?

Cheers,
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Old 20th December 2002, 05:02 PM   #35
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Brett-

Thanks for the tip on the internal capacitor.

Having bought these on eBag, I didn't get a schematic.

Dan at Electronic Tonalities is a great guy, and I have always found him very accessible and helpful.

Do you have any experience with his 2A3 amps? I am considering buying a couple so I can have a whopping 5 watts to drive the altecs.

Anybody want to buy a Hafler 500????

Ho Ho Ho

Lee
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Old 20th December 2002, 05:25 PM   #36
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Quote:
Originally posted by RADIOLEE
Do you have any experience with his 2A3 amps? I am considering buying a couple so I can have a whopping 5 watts to drive the altecs.
Nope. I'm not a big fan of SETs because they all sound muddy to me (well all I've ever heard). When my system is complete, I'd like to try some parafeed designs as it only means the purchase of some chokes.

Also, before you decide on a low watt amp, get a RatShack SPL meter and check how loud you like to listen, and back calculate power requirements, with headroom, from this. You might find 5W isn't enough to not sound compressed on peaks. A SE 2A3 will have a fair bit of (obvious) distortion at 5W!
I have horns and I use more than this. FTR, my <i>average</i> listening level is about 85dB or so, with peaks obviously extending well above that.
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Old 22nd December 2002, 12:07 AM   #37
bob4 is offline bob4  Germany
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Hi folks,

I wanted to ask if the passive line level crossover would be ok for PA?
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Old 22nd December 2002, 12:10 AM   #38
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Default JUST DON'T TELL ANYONE.

Hi Bob,

Pssssst...

Industry's best kept secret...

Bob..Why shouldn't it?

Ciao,
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Old 22nd December 2002, 12:55 AM   #39
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Quote:
Originally posted by bob4
I wanted to ask if the passive line level crossover would be ok for PA?
With proper driver choice it would probably work fine, but at a sacrifice to ultimate loudness capability.

dave
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Old 22nd December 2002, 02:59 AM   #40
JoeBob is offline JoeBob  Canada
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I'd like to put a passive line-level xover between two tube buffers, would this be a good idea, or should I just build a traditional active xover? I really don't need a high order slope and would prefer a 1st or 2nd order slope anyways. Are there any advantages to a "normal" active xover compared to the one I want to make? Or is there any point to putting it between two tube buffers, maybe I should just keep it between my preamp and amp? I'd rather stay away from feedback, and with a pllxo I can acomplish that and keep the parts count low and relatively cheap (so I can make a switch to select frequency and order).
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