Hey guys, me again...

I'm looking at some amps and I'm after a few opinions.

Just for reference, I'm checking out pyroay's (caa) PG amps, namely the qx4150 and qx3250.
He has a few of each of these, so I'm after a few opinions.

Specs are
4150
50rms @ 4ohm x 4 channels 12v
60rms @ 4ohm x 4 channels 14.4v
150rms @ 4ohm bridged x 2 channels 12v

2350
100rms @ 4ohm x 2 channels 12v
125rms @ 4ohm x 2 channels 14.4v
350rms @ 4ohm bridged x 1 channel 12v

Now here are the questions...

Are these good sq amps? I've been reading up, and they sound like good reliable amps

What would you be paying for them? I was thinking in the order of $250 each (asking $350)

I need to run splits and a sub (maybe 6x9's too and maybe one day another sub), should I look at getting one 4150 (split into 3 channels), two 4150's, two 2350's or one of each to maximise my options?

Will a decent sub run ok (for good sound, not spl, but at decent volumes) on 150wrms?

Tim, magnat, ascention (spelling?)... any of you know this guy? Is his gear ok? He did win caasq 2004 with it, but recon it'll be alright?
Thanks guys

Cheers,

Danno

Hey guys, me again...

I'm looking at some amps and I'm after a few opinions.

Just for reference, I'm checking out pyroay's (caa) PG amps, namely the qx4150 and qx3250.
He has a few of each of these, so I'm after a few opinions.

Specs are
4150
50rms @ 4ohm x 4 channels 12v
60rms @ 4ohm x 4 channels 14.4v
150rms @ 4ohm bridged x 2 channels 12v

2350
100rms @ 4ohm x 2 channels 12v
125rms @ 4ohm x 2 channels 14.4v
350rms @ 4ohm bridged x 1 channel 12v

Now here are the questions...

Are these good sq amps? I've been reading up, and they sound like good reliable amps

What would you be paying for them? I was thinking in the order of $250 each (asking $350)

I need to run splits and a sub (maybe 6x9's too and maybe one day another sub), should I look at getting one 4150 (split into 3 channels), two 4150's, two 2350's or one of each to maximise my options?

Will a decent sub run ok (for good sound, not spl, but at decent volumes) on 150wrms?

Tim, magnat, ascention (spelling?)... any of you know this guy? Is his gear ok? He did win caasq 2004 with it, but recon it'll be alright?
Thanks guys

Cheers,

Danno
Phwwwaar dude

I run Phoenix Gold QX300.4 and a QX900.1d

I have to say that these amps are AWESOME! Pretty damn good value for money i reckon. One is a 4ch, the other monoblock. I'd say they're not too bad SQ wise. Definately a lot better than Jaycar, but not as good as Phass, or Xtant. Still pretty good though. My QX900.1d and my DD sub have rattled my boot pretty bad...the nut holding on the boot garnish came off, and my parcel shelf is rattley as hell.

They're very reliable as I've never had a problem with them either. Pyoray's prices aren't too bad. A little steep, but then again, I'm one hell of a tight arse.

I reckon you should get two amps. It definatly depends on what you're going to upgrade to...1 sub, two subs? running 6x9s off headunit, or amped... Get two of the 4ch ones for the hell of it. You can use one to run all ur speakers, and the other for sub(s)

Definatly worth looking into getting those amps, very good. I would have brought them if they were black though, since both mine are black at the moment.

Bumpity schbump

Yea, I'm leaning towards one of the 4ch and one of the 2ch, only because the 2ch can be bridged into 1x350wrms@4ohms for a sub, where as the 4ch can only be bridged into 2x150wrms@4ohms.

Could I run a sub off 150wrms?
I'm not really after spl, just wondering because it would mean I could run a sub and splits off the 4ch as 2x50wrms and 1x150wrms... or can't this be done?

Cheers

Bumpy bump

If at all possible I would Get Two 4150's but wait till S_tim_ulate answers as to how good these will be for SQ...

What do you expect from the 4150 bridged at 14.4V? 2 x 170WRMS?

I'd also go two of these.... one running the front and 6x9's, then the other bridged down to 2 channels and each channel running 1 coil of a high sensitivity 4ohm DVC sub of some description (or 2x 4ohnm SVC subs).

Should get you going nice and hard, and if you ever want to upgrade, the 4 channel will be easier to dispose of.

Do they make a 4200???
(ie 4ch, 2 x 200WRMS @ 12V bridged as the 4150 is 4ch, 2x 150WRMS @ 12V bridged)

Well he's probably not going to do much better than $300 each, $275 at best, so I was thinking maybe I should just get a decent 4x100 instead of worrying about two.

I'd be getting the 2350 because it can run as 1 channel at 350wrms or 2 channels at 100 wrms, so I could run splits or a sub.

The 4 channel amps can't be bridged to mono, and I'm only planning one sub, so two might be a bit useless to me... but one would definately be useful.

I might just go get a brand new eclipse 4x75wrms for $400...

I dunno what to do!

Help?

Personally I would go the PG 4150 for the Interiors and a Jaycar Responnse Monoblock for the Sub(s)

Well he's probably not going to do much better than $300 each, $275 at best, so I was thinking maybe I should just get a decent 4x100 instead of worrying about two.

I'd be getting the 2350 because it can run as 1 channel at 350wrms or 2 channels at 100 wrms, so I could run splits or a sub. If you are after SQ though, don't bother getting the 2ch and bridging it.

The 4 channel amps can't be bridged to mono, and I'm only planning one sub, so two might be a bit useless to me... but one would definately be useful.

I might just go get a brand new eclipse 4x75wrms for $400...

I dunno what to do!

Help?

did u read my above post? these amps are good!! I have two of them atm.

If you really are looking for more sub power, then look elsewhere for a sub amp, otherwise, if you don't mind, get the 2ch one and bridge that for the sub. however, if you have SQ in mind, then dont worry about getting the 2ch to bridge.

The 4 channel one will be worth it for running internal speakers.

Sorry eek, did read your post, just wasn't sure what to do.

I think I'll get at least one of these, maybe two if he cuts me a good deal.

Cheers guys... but just after a bit more info on DVC subs...

So if I have two channels of 150wrms, can I run two voice coils of a dvc sub, one off each channel?

Cheers

Danno

So if I have two channels of 150wrms, can I run two voice coils of a dvc sub, one off each channel?
In a word, yes. To make it more correct, one VC wired to one of the two bridged outputs.

For this to work, you will need 4 ohm DVC's for this to work.

When you bridge two channels to form a bridged output (no, its not a channel....), each channel of the bridged output will 'see' (and operate) at HALF of the presented impedence load.

In your case, 4 x 75WRMS channels bridged into 2 x 150WRMS outputs, with a 4 ohm impedence on BOTH outputs, each channel will see 2 ohms of that load (impedence / number of channels = presented load per channel, 4ohms / 2 ch = 2 ohms)

So in your case, to keep things from going into protection mode, or worse, big bang followed by acrid smoke, you need 4ohm+4ohm DVC's.

IF you went for 2ohm DVC, 2ohms / 2ch = 1 ohm per channel = BAD FOR NON-1OHM-STABLE AMPS!

Did I explain it so you understand it??

Kind of... I'm still a bit confused, which probably isn't the best way to buy amps, but it's the best way to go about learning IMO :D

Decided to buy... haven't transferred money yet, but the deal was $550 for a 4150 and a 2350. He decided to keep the other 4150, otherwise I would have chosen 2 x 4150's.

Here are the specs again:

4150:
50rms @ 4ohm x 4 channels 12v
60rms @ 4ohm x 4 channels 14.4v
180rms @ 4ohm bridged x 2 channels 12v

2350:
100rms @ 4ohm x 2 channels 12v
125rms @ 4ohm x 2 channels 14.4v
350rms @ 4ohm bridged x 1 channel 12v

So I I have the following options (I think, let me know if I can't do any of these):

1. 2350 running splits and 4150 running the 6x9's and a sub in 3 channel mode.
2. 4150 running splits and 6x9's and 2350 running sub in mono mode
3. 2350 running splits and 4150 running sub (in 2 ch mode) with 6x9's runniing off the deck

I haven't got a sub yet, so I'll buy to suit.

Will these set-ups all work?
Am I right to say that I'll need a SVC 4ohm sub for config's 1 and 2 or a DVC (2x4ohm voice coils) sub for config 3?

I think I have it sussed, but not sure...
Any and all help here is much appreciated.
Cheers guys.
Danno

P.s. It's a shame there isn't a lot of info on this stuff, I've searched around heaps.
If anyone can give me a link to somewhere where I can read up about load and power ratings and what works with what, please stick it up. Cheerrs.

http://www.bcae1.com/