Need Blaupunkt/speaker Advice

[Hawkeye's-911T]

I have this Blaupunkt Model # A2804711 radio from my 1970 911.

The speaker cone had totally disintegrated upon removal. I now wish to upgrade the dash mounted speaker with the speakers from an unused countertop satellite Memorex speaker unit. Please disregard the time/date stamp on the photos as I haven't re-set my camera.

Here's a pic for info:

The woofer is 8 ohms – the tweeter is 8 ohms. The ‘transformer’ on the input panel (c/w a + & -) has a black resistor(?) with a printed tagging of 4.7uF @ 50V. The foregoing info exceeds my level of understanding of electronics. What I would like to know is; can I use these speakers to connect-up with my existing radio unit without damaging its amplifier?

My 2nd question is how to best bench test this unit & proposed speaker set-up before final installation. The power input to the radio is obvious (the yellow wire); the ‘notso’ obvious is, there is no ground tab. Can I assume the chassis of the radio grounds itself when installed into the dash?

Any input or advice will be greatly appreciated. Thanks in advance.
Cheers
JB
Go Blue Jays!!

[Hawkeye's-911T]

Seems I'm dealing with a 'paucity' of information at the moment - even manufacturer's info on the Blaupunkt unit in question seems hard to come by. I'll have to be patient as I am sure someone out there must have confronted a similar situation.

Thanks & Cheers
JB

[Mocker]

That head unit looks a lot older than 1970. Most 1970 US 911s came with a Blaupunkt Frankfurt that looks like this:



As for speakers, one of Pelican's competitors (SMC) shows their stock replacement speaker with a rating of 4 ohms, FYI. If you want an aftermarket solution for better fidelity (co-axial 2-ways), I'd buy new before trying to cobble something together. YMMV.