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Marantz MA500, only 50Hz output?
Marantz MA500, only 50Hz output?
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Old 23rd September 2008, 07:49 PM   #21
sreten is offline sreten  United Kingdom
Join Date: Nov 2003
Location: Brighton UK

An 8 ohm driver nearly always has dc resistance ~ 5.6R.

If the bass driver the speaker should be 8 ohms nominal.
(Unless the designer is a muppet ....)

The fact that 8 ohms impedance is not 8 ohms resistance is sort
of ignored to an extent for amplifier ratings. However it would
not make sense to build an amplifier that offered bridging but
it could not drive 8 ohm speakers, too many would blow up.

In fact it might not blow up bridged into 4 ohms with conservative
protection, it just would not produce a lot more power. Without
the protection details it is handwaving to a degree, but for most
japanese stuff you woud expect it to survive in some manner.

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Old 23rd September 2008, 08:36 PM   #22
RobertinMn is offline RobertinMn  United States
diyAudio Member
Join Date: May 2008

I like your response. So, it would be wise for me to limit what the speakers can draw, somehow.

Any recommendations?

BTW, most of what I use is American made:

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