intentional speaker shorting?

[Etocynned]

Was reading about this on a design pdf from here, Humble Homemade Hifi.


anyone tried this?

im tempted to try it with my B&W DM302's.

Any idea why it would make a difference or perhaps damage an amp?

[Etocynned]

To be specific he shorted the negative terminal to the driver frame by soldering.

[sreten]

Hi,

Popularised by Tannoy and their 5th driver frame grounding terminal and
mentioned in : http://www.humblehomemadehifi.com/do...o-206_copy.pdf

Nothing to do with driver / speaker shorting as usually understood.

For Tannoy its just a marketing ploy, easily done inside the speaker,
and if going for an extra earthing terminal you need two, if bi-amping.

YMMV, rgds, sreten.

[Juergen Knoop]

well, since speaker baskets are usually touchable and not every amplifiers negative terminal provides ground or may be safe to touch, the whole thing isn't advisible.

[nicoch58]

try is free....fast test, just rub a bit the varnish in the hole of one front screw (woofer?) put the wire and the screw on , connect the wire in negative of the amp....

for me work not so much but is better ,as is free is a lot better

[planet10]

Originally Posted by sreten

Popularised by Tannoy and their 5th driver frame grounding terminal

The idea predates the Tannoy 5 terminal thing, you find a lot of vintage drivers (Philips in particular) with a solder tage on the basket.

Nothing to do with driver / speaker shorting as usually understood.

I have a feeling that it is related to groundside electron pools.

For Tannoy its just a marketing ploy, easily done inside the speaker,
and if going for an extra earthing terminal you need two, if bi-amping.

Unless you have a typical Class D amp or any other that is a bridged balanced design, the negative terminal on the amp is not grounded.

dave

[sreten]

Originally Posted by planet10

The idea predates the Tannoy 5 terminal thing, you find a lot of vintage drivers (Philips in particular) with a solder tage on the basket.



I have a feeling that it is related to groundside electron pools.



Unless you have a typical Class D amp or any other that is a bridged balanced design, the negative terminal on the amp is not grounded.

dave

Hi,

a) Is probably more do do with safety than anything else.
Probably a very good idea in old valve stuff to ground the
driver chassis, especially in lethal old valve televisions.

b) No comment. I'm not one for pseudotecnobabble.

c) I presume you connect the speakers extra ground
to the amplifiers casework if you are so inclined.

rgds, sreten.

[planet10]

Originally Posted by sreten

c) I presume you connect the speakers extra ground
to the amplifiers casework if you are so inclined.

Which requires a dedicated terminal on the speaker.

dave

[Etocynned]

The pic shows a 2" length of wire soldered from the - speaker terminal to the basket.

perhaps some second hand store electronics experimenting is in order, $20 worth of amp and speakers can be put to good use here.

[nicoch58]

Originally Posted by Etocynned

The pic shows a 2" length of wire soldered from the - speaker terminal to the basket.

yes but how you thinks to fix the copper on Alu basket ?