Any experience with the Alpine PDX amps?
Melting Slicks
Joined: Aug 2006
Posts: 2,866
Likes: 45
From: Tampa Bay, Go BUCS!!!Go Rays!!!Go Lightning!!!
St. Jude Donor '12-'13-'14
I've heard nothing but good things about them. I can let you know from personal experience in a couple weeks. They got such good reviews here that I have one coming. Will take a week or two to gather up everything else and get it installed.
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
I run a PDX-4.150 in my C6 and it's a solid performer. It's not the last word in warmth, but it's very clean and delivers it's rated power without a hitch, even in the rather warm pocket I stuffed it into back in the trunk cubby. I may be switching out my setup soon and moving to something like a Zapco to pick up a little sound quality, but that is not a reflection of the PDX, more my own version of Scott's never-ending tweaking. 
The PDX will move into my daily driver Avalanche if/when I change.
The PDX will move into my daily driver Avalanche if/when I change.
Thread Starter
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
Is it a harsh sounding amp?
My Dynaudios are a bit bright as it is. I think this is due to the measly 115watts of power from my ARC amp.
The Dynaudios don't play over 10khz anyway (verified this with my RTA) so I probably wont hear distortion over that.
I thought about tube, since they give a nice warm distortion, but they are just so friggin huge.
My Dynaudios are a bit bright as it is. I think this is due to the measly 115watts of power from my ARC amp.
The Dynaudios don't play over 10khz anyway (verified this with my RTA) so I probably wont hear distortion over that.
I thought about tube, since they give a nice warm distortion, but they are just so friggin huge.
Le Mans Master
Joined: Jun 2004
Posts: 9,289
Likes: 16
From: Skippack PA
St Jude Donor '13
Is it a harsh sounding amp?
My Dynaudios are a bit bright as it is. I think this is due to the measly 115watts of power from my ARC amp.
The Dynaudios don't play over 10khz anyway (verified this with my RTA) so I probably wont hear distortion over that.
I thought about tube, since they give a nice warm distortion, but they are just so friggin huge.
My Dynaudios are a bit bright as it is. I think this is due to the measly 115watts of power from my ARC amp.
The Dynaudios don't play over 10khz anyway (verified this with my RTA) so I probably wont hear distortion over that.
I thought about tube, since they give a nice warm distortion, but they are just so friggin huge.
If you have the space to go with an A/B amp then I'd probably go that way instead, but if space is at a premium I'd say you would not go wrong to install the PDX.
Burning Brakes
Joined: Nov 2006
Posts: 818
Likes: 13
From: San Antonio Texas
I just installed the PDX 4.150 in my c4. I'm currently using it to push my 2 - 8's, and a set of Focal components. I am happy w/ the ability of this amp to push the entire sys. But I probably am going to buy another to have one dedicated to the subs, and on dedicated to the components.
My initial intention was to install behind the pass seat, this amp was the front runner b/c of it's size, IMO it's still too big to mount there. I do not like the pass seat moved up at all. I think it should be all the way back as well, so I probably am going to have a shop fab a custom amp rack to get them outta the way.
All in all though I am please w/ my decision to go w/ the PDX, I'm sure you will be as well.
My initial intention was to install behind the pass seat, this amp was the front runner b/c of it's size, IMO it's still too big to mount there. I do not like the pass seat moved up at all. I think it should be all the way back as well, so I probably am going to have a shop fab a custom amp rack to get them outta the way.
All in all though I am please w/ my decision to go w/ the PDX, I'm sure you will be as well.
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Thread Starter
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
. I have 2 pdx amps coming for my truck system. 4.150 and 1.600
Thread Starter
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
Instructor
Joined: Feb 2007
Posts: 167
Likes: 1
From: Seguin Texas
I just ordered 2 of these amps too. I got the 4.150 to drive my components and a 600 to drive the sub. I will post info when I get them hooked up. BTW< I got really good prices on ebay for the amps. The 4.150 was only $370.
Evan Q.
Evan Q.
Race Director
Joined: May 2003
Posts: 12,725
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From: ECS : WTF did you break now and HTF did you break it this time
if you're only running a front stage why not go with both lefts to one bridged set and both rights to the other......thats kinda my plan with my 300.4 JL into my 3 ways though both sets of the focal crossovers with teh 100kp's and 165kbe midbass extension deal.