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How hard is it to bridge a ZX450 2ohm x 2?
Posted: Fri Feb 24, 2012 5:15 am
by bds0688
The subs I'm interested in and am getting a good deal on are dual 4. I'm pretty partial to Phoenix Gold amps and am trying to find an amp that can do 200-350 for each sub.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Fri Feb 24, 2012 6:04 am
by Eric D
Run the amp with one channel per coil. Although the ZX450 is rated at only 75W x 4, it does almost 150W x 4, so you would have close to 300W a sub with all 4 channels running on 4 ohm loads.
If you are worried about the balancing of loads, then bridge the ZX450 into 8 ohm loads instead of 2 ohm.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Fri Feb 24, 2012 2:41 pm
by smgreen20
The review I saw on the 450 side of a Reactor did 111 x 4 at 4 ohms.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Fri Mar 16, 2012 9:54 am
by Virtue
So I assume you have 2 subs, dual 4 ohm voice coils? As Eric said, 8 ohms mono or 1 ohm mono (not recommended). What you also can do is you can run it 2 ohms stereo. So, each sub is on each channel, stereo. Then your amp will see 2 ohms stereo. What you then need to do is get a y-adaptor rca cable, it joins the signal together, (mono signal) and then get another y-adaptor and split the signal back into two RCA's then plug it into the amp. This will give a mono sound signal into the amp and then you won't have a stereo (left and right) sound coming out of the amp and then into the subs. Is this important, not really, but some music recordings will have more bass out of one side than the other, so by joining the signal and then separating them back, both subs get the exact same sound signal.
Down the road, you can buy another amp for more volume (one amp per sub), or, just use one sub right now and you should get similar sound and volume out of it by bridging the amp and it will see 2 ohms mono.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Sat Mar 17, 2012 10:09 am
by Eric D
Virtue wrote:So I assume you have 2 subs, dual 4 ohm voice coils? As Eric said, 8 ohms mono or 1 ohm mono (not recommended). What you also can do is you can run it 2 ohms stereo. So, each sub is on each channel, stereo. Then your amp will see 2 ohms stereo. What you then need to do is get a y-adaptor rca cable, it joins the signal together, (mono signal) and then get another y-adaptor and split the signal back into two RCA's then plug it into the amp. This will give a mono sound signal into the amp and then you won't have a stereo (left and right) sound coming out of the amp and then into the subs. Is this important, not really, but some music recordings will have more bass out of one side than the other, so by joining the signal and then separating them back, both subs get the exact same sound signal.
Down the road, you can buy another amp for more volume (one amp per sub), or, just use one sub right now and you should get similar sound and volume out of it by bridging the amp and it will see 2 ohms mono.
The ZX450 is a 4-channel amp.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Sat Mar 17, 2012 11:44 am
by MW3
Eric D wrote:Run the amp with one channel per coil. Although the ZX450 is rated at only 75W x 4, it does almost 150W x 4, so you would have close to 300W a sub with all 4 channels running on 4 ohm loads.
If you are worried about the balancing of loads, then bridge the ZX450 into 8 ohm loads instead of 2 ohm.
X2
Although the ZX450 can drive 2 ohms front and rear bridged, it will put A LOT of stress on the amplifier.
Re: How hard is it to bridge a ZX450 2ohm x 2?
Posted: Sat Mar 17, 2012 4:46 pm
by Virtue
(The ZX450 is a 4-channel amp)
Hahaha oops! Reading was never my strong point. Bridging amps are!
