4 ohm speakers with amp rated for 8 ohms?
I'm replacing my very old Dynaco PAT-4/Stereo 120 amp that I use for my 4 ohm AR-3A speakers. I have a Sherwood RX-4109 receiver I want to use. The manual says to use at least 8 ohm speakers. It's rated at 100W/channel. I use them in a small space, so I'm not going to play them very loud.
Can I get away with this, or will the impedance mismatch possibly harm the receiver, or give me unsatisfactory performance?
- khalilLv 78 months ago
if you use a 8 ohms instead of a 4 ohms, the output power will go down .... 88.88%if you use a 4 ohms instead of a 8 ohms, the output power will go down .... 88.88%the speaker should stand the amplifier power otherwise turning up the volume will fry the speaker.
- spacemissingLv 78 months ago
Personally, I would keep using the Dynaco equipment.
It's still very good stuff.
(I own a 120.)
As long as you don't crank the volume too high,
using 4 ohm speakers should cause no problems.
In case you didn't know or forgot, the optimum load for the Stereo 120 is 8 ohms.
I would find it hard to believe your 4 ohm speakers have hurt it over the years.
- PaulLv 68 months ago
I let my son use my AR-3A speakers with a cheap amp. Burned out the tweeters. Amps that are are compatible with 4 ohm speakers will say so in their specs. They tend to be a bit pricy.
- Tony BLv 78 months ago
You should use at least 8 ohm speakers. The manual wouldn't say that if 4 ohm speakers were okay.
Yes, you could damage the receiver. How likely it is that damage occurs is impossible to say.
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- JoeLv 78 months ago
You will probably get away with it. Especially at modest volumes.
If you play it loud, you might trigger the protection circuits.