Hi Guys,

I was after a bit of advice on what sort of speaker I can replace this one with I am not too concerned if it is authentic or not just need it to not damage the radio.

Cheers

Shane

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G'day Shane,

Going by the photos the speaker seems to be in fair to good condition. Can I take it that the voice coil is open-circuit?

Jaycar sells some 6' x 9' speakers but I am not sure of the impedance. These also have small tweeters mounted in front of the main cone which would have to be taken out for it to look as realistic as possible. Cat. #: CS2378.

Hi Brad,

The speaker still works but it has quite an annoying crackle to it. The jaycar speakers are 4 ohms. Is it ok to place any speaker designed for car audio in a valve radio or do I need to modify the radio to suit? I am not 100% sure about the term electrodynamic and whether it affects my radio. Your help is very much appreciated.

Shane

That looks like a 5 x 7" I am actually looking for the supplier that had them for around $9.20.

However I have someone working on aquiring some.

These were a common car speaker only most of them were 15 ohm.

You may find an old repairer or audio shop that has some "dead stock" hiding on a shelf, MSP made them, HMV used them as did others.

The only mods, if neccessary, would be mechanical, to mount something different.

Marc

Cheers Guys,

It is a 6 x 9, I measured the resistance at the back of the speaker and it was 3.2 ohm. As the speaker sits behind a grill and can't be seen I think I will go a buy a good quality car speaker and place it in there, I would imagine that would result in the best sound as well.

Shane

Don't forget that the resistance measurement is not the same as impedance (AC resistance). Impedance can't be measured, only calculated and I must admit I have forgotten how to do it. Tech was too many moons ago now.

If you can't get a speaker with a suitable impedance you may be able to use a transformer if you know how to calculated the required wire gauge, number of turns and do the winding work yourself. It is a lot of work though.

I have decided to have the speaker reconed, it is going to cost me $110 at a place called Speakerworks, I think this will be the best option that way I will know it is right.

Cheers

I'd have to agree. It seems to be an expensive option but it will turn out to be the option that keeps your set as original as possible but with the right component values.

Impedance is the resistance (ohms law applies) at a frequency of 400Hz from memory. A good rule of thumb is to multiply the DC resistance by 4. Near enough. This would give 12.4 Ohms in your case so probably a 15 Ohm speaker. 15 Ohm would not damage anyting as most seta were 3.5 Ohm and only later 15 Ohm and 8 Ohm put in an appearance.

Hope this helps.
Martin

Cheers Martin, you guys have been very helpful.

Hello.
I have recently bought a 2262 Philips radio.
It is an Australian Philips model.
Lookin verry simmular to the more regular philips 461A
In Holland there is no information to find about this radio.
The chassies does not look like a philips chassies.
No tipical philips parts to see.
Perhaps it's an other mark chassie used by Philips?
any information I welcome.
Here is a link for sone pictures of the repaired chassies
http://www.gloeidraad.nl/radioforum/index.php?id=59738

Wrong treath