Eclipse EA3422 help!

[MrSo0h0o]

hey guys, i have an Eclipse EA3422 amp that runs in 4/3/2 channel mode. the manual has no power or ohm ratings on this amp in 3 ch mode. i was wondering if anyone could help me out on this? i remember seeing someone who said they also had this amp so if ya could come forward and help me out with this, it would be greatly appreciated :-)

Randy

[William from NOLA]

3 channel is really just using one side of it bridged (fronts or rears) and the other side (rears or fronts) as normal. So whatever the bridged power is, for that front or rear it will be thus. The other channels are how they are rated normally.

[MrSo0h0o]

hmm.. not fully sure on that, maybe cuz its 3am..

in the manual, these are the numbers they give me..

2ohm- 70Wx4ch
4ohm- 50Wx4ch
4ohm bridged- 140Wx2ch

so now lets say i want to bridge the front, which would yield a 4ohm load and 140W into 2 channels. with the remaining channel(s), what happens? is it only one channel? is it still 2? the amp says it is 2ohm stable so does that mean that last channel can be run at 2ohm? and if so, how many watts would that yield?

im sorry for so many questions.. i emailed eclipse with my questions but they never responded :doh

[William from NOLA]

You should just treat the front set and the rear set as two separate amps. That should help you understand what I mean.

[MrSo0h0o]

so if i bridge the front set, could i bridge the rear set? how exactly does bridging work? does it depend on the wiring?

basically, im just trying to figure out how to run a sub off of that extra channel after bridging, because i dont want to buy another amp quite yet..

[William from NOLA]

Yea, it's just wiring. You can either bridge both or either or. You could actually think of it in terms of left and right too (depending on how the amp lets you bridge).

[MrSo0h0o]

i just realized.. dont u need to use all 4 channels to bridge?

[William from NOLA]

Nope, only two; typically either the front or rears, but some amps will allow you to use both left channels (or right) as well.

[GlassWolf]

4 channel mode: 2 ohms per channel min.
3 channel mode: 2 ohms per channel 1&2, 4 ohms on bridged channel 3&4 min.
2 channel mode: 4 ohms per channel min.

[MrSo0h0o]

ok just to make it clear kiki, if i wanted to bridged the front channels, it would be 4ohm and 140Wx2. the remaining channels CAN be run down to 2ohm? can they only be 50Wx2? or is there a way to combine them or something so that i can run a sub off of them? i know, its not going to be much power, but i dont want to buy another amplifier right now.

[ridr4lif]

Yes. If you were to bride one set (for example rear) you could run it at 4 ohms only, which im assuming is 140 watts x 1 bc you would be bridging channels 3 and 4, so it would be only 1 channel then ( i think...its late)

If you wanted to run the other 2 channels, you could run them to 2 ohms.

TEDD

[MrSo0h0o]

damn, now im not sure.. b/c the manual says 140Wx2 @<hidden> 4ohm bridged. which probably means when all 4 ch are used combined to make 2 channels. im tryin to figure out what the RMS rating will be on the mono channel in 3 ch mode. :-/

[GlassWolf]

right. 2 channel mode
140x2 @<hidden> 4 ohms bridged

4 channel mode would be
70x4 @<hidden> 2 ohms, 35x4 @<hidden> 4 ohms

3 channel mode is
140x1 @<hidden> 4 ohms bridged & 35x2 (both @<hidden> 4 ohms)
or
140x1 @<hidden> 4 ohms bridged & 70x2 @<hidden> 2 ohms

[MrSo0h0o]

why is it only 35Wx2? the amp is rated at 50Wx2. and i dont think its one of those amps that overrate. its eclipse.

[GlassWolf]

ok 50x2. it's an unregulated power supply then. it doesn't double it's power at half the load.
no big deal.
I was going based on the one spec you offered. I didn't look up the ratings.

[MrSo0h0o]

sorry for it to sound like i was attacking you kiki.. it was meant to sound more of a question of if you found it was only 35x2

[GlassWolf]

no, I didn't take offense or anything, I just meant I based the figures on the first bridged numbers. if it's 35x4 @<hidden> 4 ohms and 140x2 @<hidden> 4 ohms bridged, then that's what you'd get in 3 channel mode.
35x2 @<hidden> 4 ohms for front speakers
140 watts x 1 for the sub (4 ohms bridged)