Hi, I have a question for all HiFi experts among you:
I have 4 Harman Kardon SAT-TS7 satellite speakers with the following data:
Power: 10-80W
Impedance: 8 ohms
Sensitivity: 86db
These come from my home theater system BDS700, so far I have connected them in parallel to the 2 stereo outputs.
Since I now want to mount these speakers in a smaller room (one in each corner), I'm looking for a small, fairly simple amplifier to which I can hang the 4 speakers. It only has to have an aux-in input because I will only play music on my cell phone or laptop.
Do you have any tips / experiences?
The boxes have no power, but a load capacity that is specified with a maximum of 80 watts. How this value was determined is not known, so this information has no meaning.
I don't know what the minimum load capacity of 10 watts is supposed to express. The boxes won't break if the amplifier only gives 5 watts, or 2 watts or whatever.
On the question of the amplifier: You close 2 boxes in parallel. This halves the resistance to 4 ohms. Every amplifier can handle this.
You can find simple amplifiers with a signal input e.g. On ebay or amazon for about 15 euro. The search term is mini amplifier.
The value of the load capacity is usually determined by the manufacturer himself. Here one has to differentiate between the RMS and the peak value. The RMS value indicates the permanent load in watts that a box can withstand without being damaged. The peak value, on the other hand, provides information on how much the box can withstand for a short time without being damaged.
For example, if you only operate the boxes with 5 watts (instead of the minimum recommended 10 W), you risk damaging the boxes (although it must be said that the recommended 10 watts could also kill the LS). An amplifier that is too weak damages a loudspeaker rather than one that is too strong. Because a weak amplifier starts clipping earlier than a too strong one. As a result, you can kill the tweeters / mids of the speakers with an amplifier that is too weak. Therefore the amplifier should have sufficient power reserves.
For example, if you connect 4 boxes to a stereo amplifier instead of 2 boxes as intended, the impedance doubles (resistance in ohms), which halves the power per channel in W. The lower the impedance, the higher the power in W.
Example:
2x140 W at 4 ohms
2x70 W at 8 ohms
Furthermore, not every amplifier can cope with every speaker. You can connect 4 Ohm LS to a 4 Ohm amplifier. Theoretically, however, 8/16 ohm LS. These are then not fully used but the amplifier doesn't care at first. However, if you connect a 2-ohm LS to a 4-ohm amplifier, the amplifier will not last long. (Unless he has safety circuits)
