LoudSpeaker / Wiring Question

[laxkyle17]

Recently, i just bought two 6.5" Three-Way Triaxial Speakers from pyle and i made an enclosure for them. Power handling is 180 watts RMS and 360 Peak at 4 ohms. My problem is that i have an 186 watt home receiver that is rated at 8 ohms. I plan to wire the speakers in series, so that the ohm level matches up, but then will my watt mismatch be a problem? Or will an ohm mismatch be better?

Below is the proposed wiring...

 

[Nimby]

Never worry too much about an over wattage mismatch. Underpowered amps will destroy a speaker quicker than a more powerful one. The underpowered one produces lots of distortion when it's pushed too hard. This will fry the tweeters quicker than the clean power of a big amp.

Use a small 1.5V battery just to check that your bass speaker cones move in unison. You don't want them going in opposite directions or you won't get any bass.

Don't ever try this without the crossovers connected or your tweeters will be ruined by the DC. The crossover is there to protect them.

Nimby

 

[woodentop]

Your amp may be capable (supposedly) or 186W but in practice 'normal' listening levels are usually only around a watt or so - even turning it up won't do much more than about 30W. The 8R rating of the amp is more about its ability to dissipate heat from the output transistors at or near the rated output. Just connect the 4R speakers to the amp O/P amd make sure it doesn't get too hot at your preferred listening level. The worst case it will distort but you chances of doing it any damage are not worth worrying about.

 

[laxkyle17]

well i turned the amp up about 3/4 of the way and it blew out 2 subs rated at 120 watts... so i think that it is capable of about 150

 

[bob1]

Whats the amp,and what do you mean by"it blew out 2 subs rated at 120 watts"did it burn the voice coils out ?If so it sounds like amp was not able to drive the speakers too well and went into clipping.

 

[laxkyle17]

Well it is a sony reciever, and i believe it burned the voice coils of the subs, however they were pyramids (cheap and just for playing around with). I dont believe it went into clipping, because it was pretty clear sound inside and outside of the room before they just stopped working. The RMS of the subs was 60, peak 120.