6 ohm speakers on 8 ohm receiver

[B Crawford]

I have an older 10 watt receiver that receives distant stations quite well.
Would like to hook it up to some decent 6 ohm speakers I have but the back
of set says 8 ohms. Any problems on this low a power or suggestions?
Thanks, BCinBC

 

[jasen]

On 2006-08-31, B Crawford <bcdcinbc@telus.net> wrote:

I have an older 10 watt receiver that receives distant stations quite well.
Would like to hook it up to some decent 6 ohm speakers I have but the back
of set says 8 ohms. Any problems on this low a power or suggestions?

probably OK if you don't use full volume,

or maybe stick some 5 watt 2.2 ohm resistors in series with the speakers.


--

Bye.
Jasen

 

[default]

On Thu, 31 Aug 2006 00:36:12 GMT, "B Crawford" <bcdcinbc@telus.net>
wrote:

I have an older 10 watt receiver that receives distant stations quite well.
Would like to hook it up to some decent 6 ohm speakers I have but the back
of set says 8 ohms. Any problems on this low a power or suggestions?
Thanks, BCinBC

Decent six ohm speakers PLURAL? Two equal impedances run in parallel

will yield half the impedance of each or 3 ohms (worse than 6). In
series twice the impedance or 12 ohms (better from a loading
standpoint)

How do you arrive at six ohms? If you measured the DC "resistance" -
and got 6 ohms it may well be an 8 ohm speaker "impedance".
Impedance is what matters and is the combination of resistance and
inductance measured at some test frequency.

If you have a speaker that is marked 6 ohms . . . it would probably be
OK on an 8 ohm amplifier. Not guaranteed OK - but probably OK.

One 6 ohm speaker, or two in series (NOT parallel)

If it is old enough to have vacuum tubes on the output go for it. Old
enough for germanium transistors on the output - less a sure thing.
Silicon bipolar - a pretty good bet.

But a schematic of the output stage and power supply voltages would
yield a more informed response.

If you are sweating it, get a 2 ohm, 5 watt, resistor and wire it in
series with one lead of the speaker. You'll lose some volume - maybe.
Don't use two such resistor speaker combinations in parallel. Just
one, or run two six ohm speakers in series with no resistors - that
should be perfectly OK.

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