Alpine PDR-v75 or Arc Audio XDI 850.5?

[amacura]

I'm new here (but read these posts all the time) and probably should have joined a long time ago. I need some help. I have two questions:

1) Which is a better quality amp Alpine PDR-V75 or Arc XDI 850.5? I know that the pdr is not the same level as the pdx, but is there a major difference in quality?

2) I have seen where the PDR amps wattage are a little underrated. EX. specs show 350 watts on the sub channel 2 ohms, and actual wattage on one was 427. Is this true.

I hope you can help me by answering these questions.

Click to read more...

 

[dsw1204]

I'm new here (but read these posts all the time) and probably should have joined a long time ago. I need some help. I have two questions:
1) Which is a better quality amp Alpine PDR-V75 or Arc XDI 850.5? I know that the pdr is not the same level as the pdx, but is there a major difference in quality?

2) I have seen where the PDR amps wattage are a little underrated. EX. specs show 350 watts on the sub channel 2 ohms, and actual wattage on one was 427. Is this true.

I hope you can help me by answering these questions.

I'd go with the Arc. I love my Arc KS900.6. Their XDi line is one of the better Class D line of amps. Their customer service is very good, as well.

 

[LosIsATool 5,000+ posts]

If you can get the PDX do it.

The birth sheets are dynamic test. Not real world. They will do RMS.

 

[amacura]

I have a Jl audio 10tw3 for my sub that's already installed which calls for 300-400 RMS. If that tells you anything. Single sub. I wish I could do the pdx....just can't right now.

 

[LosIsATool 5,000+ posts]

400 RMS tells me it can handle noise for a few hours no stop at 400 watts.

Something we don't do. Don't get to caught up in one spec. Sure you can blow a speaker from too much power but it will take way more then a 400 RMS amp since they rarely produce 400 watts. Any amp.

It's the W3 a SVC 2?

 

[LosIsATool 5,000+ posts]

https://www.sonicelectronix.com/item_40253_NVX-JAD900.5.html?utm_source=google&utm_medium=cpc&utm_campaign=PLA&scid=scplp40253&sc_intid=40253&adtype=pla_with_pog&gclid=EAIaIQobChMI4v38zKaZ1QIVDKJ-Ch0i2gHOEAQYASADEgIeDfD_BwE

 

[Papermaker85 5,000+ posts]

If you can get the PDX do it. The birth sheets are dynamic test. Not real world. They will do RMS.

source or you LIE.

 

[LosIsATool 5,000+ posts]

source or you LIE.

Pretty sure they say it. Just like rockfords dynamic bass cube birth sheets. My old PDX gen 1 said dynamic.

 

[Papermaker85 5,000+ posts]

Features and Specification

SPECIFICATIONS

CEA-2006 Power Ratings

CEA-2006 Power Rating: 75W RMS x 4 + 250W RMS x 1 (4-ohm, 14.4V at

RMS Power Ratings

Per channel into 4 Ohms: 75W RMS x 4 + 250W RMS x 1 (14.4V at

Per channel into 2 Ohms: 100W RMS x 4 + 350W RMS x 1 (14.4V at

Bridged 4 Ohms: 200W RMS x 2 (CH-1/2/3/4, 14.4V at

Sound Tuning

Crossover Frequency (CH1/2/3/4, HPF): 50 Hz - 400 Hz, -12 dB/oct.

Crossover Frequency (Subwoofer, LPF): 50 Hz - 400 Hz, -24 dB/oct.

Subsonic Filter (Subwoofer): 8 Hz -40 Hz, -24dB/oct. (Variable)

BASS EQ (Subwoofer): 0 to +12 dB, fc=50Hz (Variable)

Dimensions

Foot Print (WxHxD) mm: 270 x 50.8 x 165 mm

Foot Print (WxHxD) in: 10-3/4'' x 2'' x 6-1/2''

General

Power Requirements: 14.4 V.DC (11-16V allowable)

Input Impedance: >10k ohms

Frequency Response (+0, -3dB: 1W into 4 Ohms) for CH-1/2/3/4: 8 Hz - 45k Hz

Frequency Response (+0, -3dB: 1W into 4 Ohms) for Subwoofer: 8 Hz - 400 Hz

THD+N (10W into 4 Ohms) for CH-1/2/3/4: 0.02 %

THD+N (10W into 4 Ohms) for Subwoofer: 0.02 %

Damping Factor for CH-1/2/3/4: >500

Damping Factor for Subwoofer: >1000

Signal to Noise (Rated Power into 4 Ohms) for CH-1/2/3/4: 105 dB

Signal to Noise (Rated Power into 4 Ohms) for Subwoofer: 110 dB

Weight: 2.76 kg/6lb 1.4oz

Input Sensitivity (RCA Input,CH-1/2/3/4): 0.2 - 4.0 V

Input Sensitivity (RCA Input, Subwoofer): 0.1 - 4.0 V

 

[amacura]

Dvc 4ohm

 

[amacura]

So should I go Arc XDI or Alpine PDR? What would you do? By the way I can get Arc for $260 and Alpine for$205. I also want to keep resale in mind.

 

[LosIsATool 5,000+ posts]

The NVX, its a Hertz HDP5. But if you are dead set on those. The ARC.

 

[Papermaker85 5,000+ posts]

The NVX, its a Hertz HDP5. But if you are dead set on those. The ARC.

Arc over nvx and hertz.

 

[amacura]

Question that doesn't have to do with amps. Ballistic around the door speakers, is it worth it or is it a sales pitch for more money? I just remember many systems that sounded crazy and they didn't have Ballistic material.

 

[LosIsATool 5,000+ posts]

Question that doesn't have to do with amps. Ballistic around the door speakers, is it worth it or is it a sales pitch for more money? I just remember many systems that sounded crazy and they didn't have Ballistic material.

Ballistic? Yes door treatments are extreamly important. Look up what a back wave is.

 

---------- Post added at 12:36 AM ---------- Previous post was at 12:35 AM ----------

 

Arc over nvx and hertz.

KS yes. XDi not so much.

 

---------- Post added at 12:36 AM ---------- Previous post was at 12:36 AM ----------

 

Arc over nvx and hertz.

KS yes. XDi not so much.