6 Ohm speakers, matching ?

Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
27,855
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
I got a bargain yesterday having found two Denon SC-M51 speakers for a tenner. I good condition with the exception of some candlewax down the sides which I can remove.

I had thought about changing the computer speakers here which are Trust Soundwave 3D (two shelf units and one subwoofer that also contains the 15W amplifier (which usefully can be be used in active and passive mode).

The potential issue is their impedance of 6 Ohms. I believe the existing Trust units are 8 Ohm and have only one speaker in them, no crossover.

Am I going to find trouble with distortion or damage to the main unit at a particular volume or am I OK to connect ?
 
Last edited:
Luke61

Luke61

Regular Member
Messages
36
My Satellite Setup
80cm Technomate, Philips twin lnb, Telekom HD receiver, fixed on 39E
My Location
Leicester
as long as you keep the volume under 85-90% you should get no distortion
 
A

Archive4

Guest
A long time since I did my Electro Magnetic Principles, but I would of thought you should be ok, as long as you don´t keep volume on max all the time. You could, in theory, wire in a 2 Ohm resistor on each of the two feeds, thus making them 8 Ohm impedance to the amp, at least from memory that should worko_O
 
Channel Hopper

Channel Hopper

Suffering fools, so you don't have to.
Staff member
Messages
27,855
My Satellite Setup
A little less analogue, and a lot more crap.
My Location
UK South
Thanks. I doubt the volume is much beyond half at any point, the Trust speakers have done their job for years and work well, but the new units look the part and should save me from reaching under the desk to turn on the bass when needed.

At some point I will be redoing the whole room for the audio, having acquired one of these a few months back, not new, but functioning.

X Rocker Pro 2.1 (# 51319) - X Rocker
 
Last edited:
D

drats

Member
Messages
109
My Satellite Setup
VU+Duo, Vu+Duo2, Vu+Zero, Gibi 1.5m, TBS 6903 PCI
My Location
North West UK
I think you will find your new speakers will be easier to drive than your existing ones. They should be marginally louder at the same volume. 6 ohm will be less resistance than 8.
 
Terryl

Terryl

Specialist Contributor
Messages
2,360
My Satellite Setup
OpenBox X5 on a 1 meter motorized dish.
And now a 10 foot "C" band dish.

Custom built PC
My Location
Deep in the Boonies in the central Sierra Nevada mountains of California.
Some newer stereo systems can run from 4 to 8 ohm speakers without problems, I would check your spec's for your stereo amp first, if it say's 8 ohms then you would have to put some 1 ohm resistors on the plus and minus sides of the input, as some stereo outputs are balanced driven outputs.

And be sure to use the correct wattage resistors, you don't want to pop them.

If you have trouble finding the correct resistors you can always add more speaker cord, or go to thinner wire gauge, this may compensate for the lower resistance.

But in most cases the 2 ohms difference may not matter on some stereo amps as long as the speakers are not under rated as far as how much wattage they can handle.
 
P

pgh13

Specialist Contributor
Messages
1,606
My Satellite Setup
XTrend ET8000, Dr HD 15, PC/twinhan combination. 80cm dish. GBPVR with 2 DTTV cards +hauppauge Media MVP +Raspberry Pi running XBMC
My Location
Midlands UK
Isn't this only relevant if you're going to run the system with volume turned to '11?' If you're using with them with a 15W amp I'd not expect problems ..... 'scept you'd maybe want a bigger amp! :)
 
Top