Re: Different Ohm Speakers

On Dec 27, 2:54 pm, jh <jh-audiop_NOS...@xxxxxxxxxxx> wrote:
Fit E. Cal schrieb:





On Dec 26, 6:14 am, jh <jh-audiop_NOS...@xxxxxxxxxxx> wrote:
Fit E. Cal schrieb:

On Dec 25, 5:50 pm, JD <b24warb...@xxxxxxx> wrote:
Freddie wrote:
Hi,
  I got an amp that can output to 8 or 16 Ohm speakers.  For the same
type of speaker, what would different Ohms do?
   Consider ohms figure the matching component of the system.
   The numbers should match 4 to 4, 8 to 8, 16 to 16, for the
   best performance and meet the power specifications. Mismatches
   are not favorable, results vary. Do your homework.
You do not manditorily have to match;
                                Amp                           Cab
"Hi into lo will go" Ex/ "( 8 ohm into an 4 ohm output jack)"
                                       Amp
Cab
"Lo into high won't fly" Ex/ "(8 ohm into an 16 ohm output jack)
 "Hi into lo will go
 "Lo into high won't fly"
:-) mvm
NO NO NO NO NO NO NO NO

NO

when will you ever learn?- Hide quoted text -

- Show quoted text -

http://www.21frets.com/speakers.html;

"...In the case of solid state amps, there will normally be a "Max
Load" (also called "Minimum Impedance") rating for the amp. The load
plugged into the amp should never go below the minimum impedance or
serious damage may occur to the amplifier. Maximum power will be
obtained when the speaker load matches the minimum impedance. It is
perfectly safe to use a higher impedance speaker load, but there will
be a corresponding drop in output power (i.e. an 8 ohm speaker load
will result in approximately half the output power of a 4 ohm speaker
load).
In the case of tube amps, it is best to match the speaker load as
closely as possible to the amplifier output impedance. In theory,
there is some small amount of mismatch that will not hurt the amp,
however, it is always recommended that you match the speakers as
closely as possible to the rating of the amp to avoid potential
problems. If there is a slight mismatch, it should be at a lower ohm
rating, not higher...."   "Hi into lo will go...Lo into high won't
fly"

marc,
first of all, i wrote my post some days ago from a different provider.
It just appeared today. This was before you made it more clear.
second, your little rhyme is a bit easy to understand - and the example
too. Is the "output jack" the amp or the input of the cabinet?

:-)

jochen- Hide quoted text -

- Show quoted text -

I think the semantics CAN get confusing too Jochen and in fact, many
months ago, Ether clearly pointed out the correct
way to relay this info. I just keep the little rhyme handy. To answer
your question; That's output jack is on the cab
and you are correct, as jacks go, it's actually an INPUT jack.
Laughing. OY! :-) Marc
.

Relevant Pages

  • Re: Different Ohm Speakers
    ... Load" rating for the amp. ... Maximum power will be ... obtained when the speaker load matches the minimum impedance. ... will result in approximately half the output power of a 4 ohm speaker ...
    (alt.guitar.amps)
  • Re: amplifier/receiver question
    ... Manual says 8-16 ohm impedance, and I'm wondering how bad will it be ... Check out "maximum power transfer", ... because the amp specs are not based on output impedance. ...
    (sci.electronics.basics)
  • Re: amplifier/receiver question
    ... in must equal impedance out for power to be transferred effectively. ... The old "impedance matching" thing almost certainly doesn't apply here ... because the amp specs are not based on output impedance. ... Now consider a 4 ohm load. ...
    (sci.electronics.basics)
  • Re: Extending a combo amp
    ... If the amplifier would produce more power into a lower ... This allows you to plug an external 8 ohm speaker in to get the ... 60W amp will only be a 60W amp no matter what you plug into it. ... When you're at 2 ohms with an external speaker, ...
    (alt.guitar.bass)
  • Re: impedance mismatch and my jcm 800 4104
    ... the stock celestions say they are both 16 ohm speakers. ... the wires from the amp go to only one speaker which is daisy chained to the 2nd speaker. ... i think that means that i should have the amp impedance set at 8 ohms when using both the stock speakers. ... I believe a rule of thumb is ...its safe to plug a speaker load that is ...
    (alt.guitar.amps)