External Amp Connection

mazersteven

mazersteven

Audioholic Warlord
According to some of the reviews those speaker spend some time down in the 4 ohm range. I tried to find specs on the 3806 which is a great receiver but I can't say for sure if it's 4 ohm stable.


 
Last edited:
P

PENG

Audioholic Slumlord
According to some of the reviews those speaker spend some time down in the 4 ohm range. I tried to find specs on the 3806 which is a great receiver but I can't say for sure if it's 4 ohm stable.

If I remember right, like the 3805, it was among the few that passed AVtech's 1 Ohm test. It will be 4 Ohm stable for sure if you go easy on the volume, the same can be said with most AVRs and even power amps. You turn the volume high enough, very few real power amps will be 4 Ohm stable.
 
M

mia666

Enthusiast
According to some of the reviews those speaker spend some time down in the 4 ohm range. I tried to find specs on the 3806 which is a great receiver but I can't say for sure if it's 4 ohm stable.


Am i missing something? If the Denon is 130 watts, would a amp rated at 150 watts really make any difference. That was why i was looking at amps in the 200 watts per channel.
 
Tony Cardenas

Tony Cardenas

Junior Audioholic
Thanks, but now i do not need cables...you talked me out of getting an amp..lol
You could checkout the Outlaw 5000x - 120W per channel - all channels driven (8ohm). Its a great unit and the price is hard to beat ($500-700 depending on where you get it). I connected it similar to how you described (RCAs from pre-outs on the Denon) to RCA in on the amp. Using a trigger cable as well so the amp turns on when I turn the receiver on. Working out well so far.
 
mazersteven

mazersteven

Audioholic Warlord
Am i missing something? If the Denon is 130 watts, would a amp rated at 150 watts really make any difference. That was why i was looking at amps in the 200 watts per channel.
I'm not looking at the watts for 8 ohms I'm looking at the 4 ohm watts. Plus it has nothing really to do with the watts, my concern was whether the Denon 3806 receiver was 4 ohm stable. Meaning can it handle 4 ohm loads for extended periods of time under normal to higher volume.
That is a nice receiver, back in the day one of the best. I just hate to see you damage it.
 
M

mia666

Enthusiast
Thanks for all the advice...i do not need cables if i do not buy that amp..i will now look at a newer avr receiver, or see if anyone has run the Rainmakers with a power amp. Thanks to everyone, the mission continues... Later
 
lovinthehd

lovinthehd

Audioholic Jedi
Thanks for all the advice...i do not need cables if i do not buy that amp..i will now look at a newer avr receiver, or see if anyone has run the Rainmakers with a power amp. Thanks to everyone, the mission continues... Later
A newer avr to gain better features for connectivity and handling of newer video/audio formats/codecs?
 
P

PENG

Audioholic Slumlord
I'm not looking at the watts for 8 ohms I'm looking at the 4 ohm watts. Plus it has nothing really to do with the watts, my concern was whether the Denon 3806 receiver was 4 ohm stable. Meaning can it handle 4 ohm loads for extended periods of time under normal to higher volume.
That is a nice receiver, back in the day one of the best. I just hate to see you damage it.
Put it this way, if the Denon is rated 120 W into 8 ohms, it will be rated at least 60 W into 4 ohms. For real world music and movies, it will be able to do more than 120 W into 4 ohms and stable, but the issue would be if it is used to play compressed music for extended periods it will overheat and hopeful shutdow before it cooks itself to well done.. As always, the safe bet would be to use the online calculator that has been linked many times. The calculated numbers would be based on 8 ohms, but you lower the entered speaker sensitivity by 3 dB and the results will then be good for 4 Ohms. Or use the specified sensitivity, but whatever "watts" you entered, once you get the targeted spl, half it and that would be the correct number. I think you know that very well already..:)

Peak SPL Calculator (homestead.com)

Regardless, for use with 4 ohm load, I would put a fan on top.

Below is the linked to the AVR-3805 test I mentioned earlier, that it passed the 1 ohm test:
Report (milleraudioresearch.com) Note: No sign up required

The 3806 was also tested, but only down to 2 ohm, they did not do the 1 ohm test on it:
Report (milleraudioresearch.com) Note: Any tests results after 2004 required sign in, but it is free to join.

Again, those low impedance torture tests were measured obviously based on some dynamic output measurements standard/protocol. If you use the thing on 4 ohm nominal speakers and expect the same 8 ohm rated maximum output for extended period, then it is a different story. For such use you really should use the calculator to find out if the 3806 would be up to such a task.

Bottom line is, the 3806 is quite powerful, and for 2 channel use I would think it is comparable to something like an Outlaw 5000/7000, or Emotiva A-300.
 

newsletter
  • RBHsound.com
  • BlueJeansCable.com
  • SVS Sound Subwoofers
  • Experience the Martin Logan Montis
Top