8 Ohm Amplifier and 4 Ohm Speakers

Hello,
I have a similar issue; I won a Marshall 4x10 cabinet at 4 ohms.
The problem is that I use a Hartke System amp and cabinet, both of which operate at 8 ohms. My amp has two 8-ohm outputs, so I can connect two cabinets. Is there a way to bypass this impedance issue :p or should I sell my Marshall (which is really good...) to buy a cabinet at 8 ohms instead?

Thanks in advance.

I asked myself the same question and I found the answer

http://www.hifissimo.com/store/search.cgi?user_id=925&database=base.db&template=fiche_technique.tpml&0=28065

Good evening
"In theory" (as they say), you should connect 2 X 2 speakers in series (with the polarities like for batteries, if that image makes sense to you).
In this case, you will get 2 X 16 ohms, which means that the overall sound level will decrease, as surprising as that may seem. Moreover, if the speakers in series are not of the same model, the sound quality will be affected.
If you connect the speakers in parallel, you will have 2 X 4 ohms, and you will go beyond the specifications of the amplifier. However, most of the time, amplifiers are quite capable of handling this load. The available power will increase (but you may need to be careful not to overdo it), and the sound issue mentioned earlier will not arise if the speakers are mismatched.
Linux Mandriva 2010.0 Firefox 3.6.10

Hello
If an amplifier works with 8-ohm speakers, it doesn't mean it can't also work with 4-ohm ones. You would need to read the technical specifications.
The impedance curve of a speaker is extremely twisted, and assigning it a nominal impedance is partly based on a rough estimation.
--
Linux Mandriva 2010.0 Firefox 3.6.6

Good evening,

I also have some issues with impedance, I've made a diagram and put the questions directly on it: http://img4.hostingpics.net/pics/576026Caissondebasse.png

Thank you in advance :)

Hello, I have an 8-ohm amplifier and 4 8-ohm speakers, and I don't know how to connect them to the amplifier without technical issues (like the amplifier cutting out or the speakers blowing). Thanks for getting back to me as soon as possible!! :)

I thank you for your advice, it will help me a lot! :) Thanks again.

Hello,

despite my efforts, I still haven't quite grasped the issue of power and ohms. Well, I've understood that the lower the impedance, the greater the maximum power potentially supplied by the amplifier, but it's still quite unclear.

So my question will be quite simple: is it problematic to connect two 140W column speakers at 4 ohms to an amplifier that offers 130W/channel at 6 ohms?

If I'm following the reasoning, there is a risk of blowing the speakers because at 4 ohms my amplifier will deliver more than 130W (theoretically 130*3/2, again if I've understood correctly, so 195W) and at maximum power that would be too much for the speakers.

If someone could confirm this or on the contrary tell me that I'm wrong (and explain it to me :)), that would be really nice and reassuring as well.

Thanks in advance!

Good evening,
To give a precise address: http://www.sonopratique.com/index.php?art=enceintes&titre=Enceintes
to consult before doing something foolish, nowadays amplifiers are protected but speakers are not, the first to fail are the tweeters, so tests should be done at low power.
For good speaker performance, respect polarity (an inversion results in a 30% loss of sound dynamics).
Best regards...
Signed Papy DJ

6 ohm amplifier tuner and 8 ohm speakers

is it compatible?

Hello

I have an iPod dock with two front speakers + 1 subwoofer all at 6 ohms. The two speakers are connected from the subwoofer.

I would like to connect two speakers in parallel (8 ohms) to have a sound that fills the room better without having to buy an additional amplifier, but I'm afraid of damaging the amplifier of the iPod dock.

I know that, in principle, I shouldn't do it, but since most of the bass (the most intense frequencies for the speakers) is handled by the subwoofer and I don't plan to turn the amplifier to the max (50% at most), it seems doable to me.

What’s your opinion?

good question, I need to check as soon as my neighbors are out!

apparently yes, it's heating up since I can feel the warmth as soon as my hands wander around the amp without actually touching the heatsink. But I should check if it really gets hotter when I push it to 80%

thanks for the answer anyway, at least it gives me a lead

Yes, this is possible as long as you do not raise the total volume of the amplifier to more than half of the gain, meaning instead of using it up to 4/4, you should use it up to 2/4.

I have an 8-ohm amplifier and speakers marked 4-8 ohms, is that okay?

Hello,
I have a Marantz PM 5004 amplifier (2 x 40 watts at 8 ohms, and 2 x 55 watts at 4 ohms), and I was looking to buy Triangle Comète 202 Carbon speakers (8 ohms, 80 watts capacity)

Am I at risk of losing volume?
(knowing that I live in a 35m2 one-bedroom apartment and I don't plan to crank up the decibels...)

Thank you.

91 dB is an excellent sensitivity for bookshelf speakers!
The Marantz PM5004 with its 20Wrms per channel at 8ohm will support the Triangle.