Hi Gents...


Just after some advice. I have some more equipment at my disposal atm, namely a 2x250WRMS D-class full range eclipse amp.

My speakers consist of, Arvus tweeters 16ohm, morel mids 4ohm, and a pair of VDO HPS12 Single 4ohm subs.

Amplification currently consists of a bridged Orion 2250SX(2x250WRMS) feeding approx 1000WRMS into 2ohm (parallel subs), a bridged Eclipse EA3422(4x50WRMS or 2x120WRMS) into the morels and an Orion 250SX (2x50WRMS) into the tweeters.

It sound nicely balanced etc and I have no major issues with it. I was thinking I would like to feed the morels and tweeters some more power, so I have two options.

Option 1:-

Subs:- Orion 2250SX bridged, 500WRMS/sub
Mids:- Eclipse d-class, 250WRMS/mid
Tweeters:- Eclipse EA3422, approx 50WRMS/tweeter

Option 2 :-
Subs:- Eclipse d-class, 250WRMS/sub
Mids:- Orion 2250sx, 250WRMS/mid
Tweeters :- Eclipse EA3422, approx 50WRMS/tweeter

I guess it really comes down to what the SQ of teh D-class will be liek compared to the Orion 2250Sx. I'd liek to be able to retain the 1000WRMS into the subs, and not lose any SQ by using the d-class to feed the mids.

But on the other hand I've read that the d-class has more 'grunt' (for want of a better word) behind it for driving subs, so the 3dB lost in halving the power might not be so noticeable.

ATM all speakers in the system are very balanced and seem to reach clipping limits approximately the same time, so I'd say the power balance is fairly good.

Thanks in advance.

Ben

i cant say I know those models well.

But my gut feeling is to take option 1

I'd be going with option 1 provided you are happy with how your subs are currently sounding.

Other than that i'd have a bit of a play round and try the amps in different spots to see which way personally suits your needs

I was thinking the same. I'm jsut a little concerned about the SQ of the D-class amp. It will be running from around 60hz - 2000hz.

From what your saying i'm gathering it is an active setup. I'd say leave it as it is. 120WRMS is heaps for some midrange running active. I would also hate to have to redo all the tuning. If u still want improvements i suggest to keep tuning as i think that will be the main change in sound.

\

I don't expect to get much in any gain in low level SQ, but I;'d expect by doubling the power into the front speakers I'd be giving them a fair whack more headroom in Amplifier power and hence transient response by getting more power?


I guess the better question may have been, would I notice a degrade in SQ between changing from the eclipse EA3422 to the Eclipse DA6213 amp?

Topic/title changed to reflect new direction.

Will there be any discernable SQ change between switching froma Bridged Class A/B Eclipse EA3422 and an eclipse D-class DA6213 amplifier on my mids for the 2-way front stage.

if you got them both there then try them out

And then come back and tell us cause Im curious about this too.

Just waiting on a little issue to be sorted out It involves a rewire also, I doubt 8GA would be enough for the DA amp.

It's my understanding that a class-D amp is great for subwoofers, because it's more efficient therefore more powerful for the same load on your car. Class-D is not so good for higher frequencies, tweeters etc. Apparently their not as SQ-ish. ie. Because their digital, they can't follow the high frequencies as accurately as a class-A/B.

I have one running my subs - no dramas.

I guess you can only try. dodgy wire it and see how it sounds.

I read an independant review on the new class D full-range amps (not specifically Eclipse, but IcePower module-based) .
apparently they have exceptionally detailed response and can highlight problems elsewhere in the system - a bit like valves can hide some problems

but as all above suggested - try it and let us know.
how loud do you want it?
my amps are 65Wrms per driver (3-ways) + 150Wrms sub - plenty loud enough for me.

Well I've had the amp fixed and did some playing today, though I didn't bother connecting the amp up to my mids as it has a noise floor in it. When powered up even with no inputs there's a slight high freq noise floor. This is a pet hate of mine and bother me enough that I won't install the amp for anything other then bass duties, as the subwoofers can't reproduce this freq so I won't hear it.

Even the inbuilt low pass filter could not cut this noise, so it must be an amp design floor. This probably wouldn't bother most people, but I expect to be able to put my ear against ANY speaker in my system at 0 VOL and have absolutely no noise coming from the speakers.

On a different note I did connect one channel of the D-class to my subs, 2ohm load and I must admit even with only one channel feeding the subs I didn't notice any obvious reduction in level between a single channel feeding both subs from the d-class and my 2x250WRMS Orion feeding both in bridged mono.

This has tempted me to think about using the d-class on the subs and feeding the mids from the orion I'll just double check the larger Orion doesn't have any noise floors similar to the D-class.

Stayed tuned....

noise - ugh!
mind you anything better than 100dB is considered good
personally I like -112dB - then as you say - no noise (most nearly, at least)

I'm very picky in this area though. When I say 'noise' I mean when you put your ear right on the speaker there is a faint hissing. This is evident regardless of crossover settings, and signal feed. I removed the RCA's completely and it still was eveidnet. I even tried every setting and combination of crossover mono, stereo L+R etc onthe amp and it remained for the entrity.

I have experieneced the same 'noise' on numerous amplifiers before though...

The good news is the Orion showed absolutely NO noise whatsoever;) and I tried the Eclipse with bridged 2ohm mono and it seemed to cope okay, no signs of stress of excessive heat.

I guess I'll have to start working out how to rewire and mount the new system now I'm 'almost' happy with it atm, but it's just slightly lacking....