Amp

[Ivkyy1]

Should I use old amplifier to new speakers?

 

[Leemix]

More information would be good but usually old amps are just fine unless something wrong with them.


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[Ivkyy1]

i was thinking of buying an old amp someone and the speakers are a Wharfedale D330 ..and if the amp is 8-16 ohm and the speaker is 4, does it matter?...on speakers say (8 ohm compatible)

 

[Leemix]

It depends on the amp and the volume you play at, 4ohm speakers draw a lot more current than 8ohm ones which may be a problem for weak amps if played loud.


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[Ivkyy1]

now i don't know how many watts an amplifier needs for 2 speakers which are 4 ohms

 

[Leemix]

Not many unless you play loud.


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[Leemix]

But give a bit more info about what kind of amp and how old you consider.


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[Ivkyy1]

let's say onkyo A8670 from 1989..that's an example

 

[Leemix]

That one lists 4ohm as ok in specs.

Very old amps may not last long though, they could work for a long time but amps do age.

But the most important isnt 4 or 8ohm, its how loud you play.


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[Ivkyy1]

Ok,thanks..I'll think about it

 

[lovinthehd]

Here's a calculator to help you determine how much power you need for particular speakers' sensitivity at what distance http://myhometheater.homestead.com/splcalculator.html

Most amps can handle 4 ohm loads to an extent, somewhat depends on your listening levels, somewhat depends where in the frequency range the speaker operates at 4 ohm (it varies constantly with particular frequency). Some amps are rated better for 4 ohm operation (or even lower like 2 ohm) than others. Might try this article for some background https://www.audioholics.com/loudspeaker-design/loudspeaker-sensitivity

Your speakers say minimum 4 ohm, nominal 8 ohm and a sensitivity of 88dB (@2.83V at 1m.....2.83V at 8 ohms is one watt, at 4 ohm that's 2 watts). Your speakers should work quite well with a variety of amps/receivers. That Onkyo should work fairly well for your/most purposes if its still in good shape.

 

[Ivkyy1]

thanks for the reply but i think i will take a Denon avr 2106 amp..that would be ok too?

 

[Ivkyy1]

and thanks for sharing, I’m just reading this

 

[lovinthehd]

thanks for the reply but i think i will take a Denon avr 2106 amp..that would be ok too?

A bit old for my taste, altho if in good functioning form should work well enough, although in its specs it doesn't indicate its intended for 4 ohm operation (it indicates 6-16 ohm particularly), but at modest levels should work just fine even at 4 ohm. Why such an old unit? Doesn't have many functions more modern avrs have....

 

[Ivkyy1]

i know it's old but for rehearsal it's an amplifier..
and the speakers say 8 ohm compatible, will the sound be good? .. maybe the heater will be amplified but here it is.

 

[lovinthehd]

i know it's old but for rehearsal it's an amplifier..
and the speakers say 8 ohm compatible, will the sound be good? .. maybe the heater will be amplified but here it is.

For rehearsal? Heater? Might be translation issues there

A speaker indicating it is 8 ohm compatible means little really, particularly as to how it relates to sound quality....but the sound quality should be fine, altho if pushing volume to high levels issues can manifest themselves (distortion, perhaps thermal shutdown).

 

[Ivkyy1]

For rehearsal? Heater? Might be translation issues there

A speaker indicating it is 8 ohm compatible means little really, particularly as to how it relates to sound quality....but the sound quality should be fine, altho if pushing volume to high levels issues can manifest themselves (distortion, perhaps thermal shutdown).

I thought of heating the amplifier haha ,nothing important..mainly thank you for everything

 

[lovinthehd]

I thought of heating the amplifier haha ,nothing important..mainly thank you for everything

The "heating" of an amp can manifest itself in some avrs, and an external cooling fan can help out. If simply a class A amp, then just the design

 

[Ivkyy1]

and which cable to choose for the speakers?

 

[lovinthehd]

and which cable to choose for the speakers?

Speaker cable of the appropriate gauge for the length involved and your speakers' impedance is all that's needed. This is a great site for all things speaker cable http://roger-russell.com/wire/wire.htm