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Kal Rubinson
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Tim Link wrote:
Tim Link wrote:

It's right between them!

If it's a CRT, I hope you have a lot of space between the TV and the K'horns.

geoffkait
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Perfect, they cancel each

Perfect, they cancel each other out.

Tim Link
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Kal Rubinson wrote:
Kal Rubinson wrote:
Tim Link wrote:

It's right between them!

If it's a CRT, I hope you have a lot of space between the TV and the K'horns.

Not a CRT. But what if it was?

Kal Rubinson
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The speakers' magnets create

The speakers' magnets create external magnetic fields which can, depending on size, distance and geometry, interfere with the electromagnetic deflection mechanisms of a CRT. Early in HT, many speakers were designed with shields to minimize this problem but it is no longer an issue with today's technology.

SAS Audio
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Kal Rubinson wrote:
Kal Rubinson wrote:
SAS Audio wrote:

2. The second method is to simply install a part or component in a system and listen. After a while, one comes to a conclusion for that particular system.

After a while, one inevitably adapts to that particular system.

I somewhat agree. I would say until one listens to a live performance or another system that one feels is more lifelike.
I will stop here with my comment.

cheers

steve

Kal Rubinson
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Agreed.

Agreed.

geoffkait
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One solution to the speaker

One solution to the speaker magnet problem, if it even is a problem, which I seriously doubt, due to the fact that magnetic field strength obeys inverse square law, is to wrap high gauss/ high frequency mu metal around both magnets. This technique is used primarily to prevent magnetic fields from affecting internal speaker wiring and components. For large transformers on amps use low gauss/ low frequency mu metal. Wrap twice for even better performance. Does that surprise you?

Tim Link
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Bench testing possibilities

I agree that a good bench test tells quite a lot. I don't know if this is common practice but I suppose they should run a pre-amp in to various loads to simulate a possibility of different amps it might encounter. If the pre-amp has a specification for minimum input impedance on the amp the bench test should include input impedances within the ranges specified by the manufacturer to see if there are any performance differences within that range.

SAS Audio
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Differing Amplifier Input Impedances
Tim Link wrote:

I agree that a good bench test tells quite a lot. I don't know if this is common practice but I suppose they should run a pre-amp in to various loads to simulate a possibility of different amps it might encounter. If the pre-amp has a specification for minimum input impedance

on the amp the bench test should include input impedances within the ranges specified by the manufacturer to see if there are any performance differences within that range.

Agreed, there is certainly a sonic difference when changing amplifier input impedance (Z) with capacitor coupled output stages.

I am retired for some 10 years now, but early on, my 11A Reference Line Preamplifier was designed with an adjustable rotational control for differing amplifier input impedances (Z), from 20k ohms on up. (Control is Not in series with anything.)

As far as I know, my 11A is the only preamplifier with this advanced feature.

Cheers

steve

Poor Audiophile
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Unbiased?

Is that possible?

SAS Audio
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Is that possible

I assure you, it is possible and been done for some 25+ years now.

cheers

pos

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