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#424579 - 03/28/17 10:15 PM AV receiver vs. stereo Amp?
Rock Offline
old hand

Registered: 07/22/15
Posts: 71
Hi guys,

Many suggested me to test AV receiver vs. stereo Amp for below reasons:
1. My NAD 3556BEE only has 80W power, no Sub pre-out. So I have to run full range on my M22s even though my EP500 is very powerful.
2. AV receiver could create/restore more realistic music for better experience.

I did a test today but not satisfying with the results.

Got a second hand Denon AVR 1802/882 and run M22s and sub. However the receiver couldn't generate the same level of detailed,warm, controlled bright sound especially on the high range. The sound is not bad in general and at least better than my expectation. But certainly not as good as the stereo amp. I set the receiver with pure stereo, tone defeat mode. Use the same CD source.

What is your experience and suggestion? Maybe I should use a more expensive receiver? I am thinking to connect receiver front pre-out to NAD line-in to see if there will be any difference.


#424584 - 03/28/17 11:32 PM Re: AV receiver vs. stereo Amp? [Re: Rock]
bridgman Offline

Registered: 08/25/04
Posts: 6067
Loc: Bowmanville, Ontario, Canada
Whoa, welcome to the slippery slope smile

Dumb questions to start with:

1. IIRC there are some modes ("Pure Direct" comes to mind) where not only tone controls are disabled but also the DSP processing which generates low-pass subwoofer output and high-pass mains output. Are you fairly sure you were not running one of those ?

2. When you say "... bright sound especially on the high range..." does "high range" refer to "loud" or something else ?
M60ti/VP180/QS8/M2ti, SVS PC-Plus 20-39, EP500
M5HP, Sierra-1, M40ti
M3v4, VP100

#424586 - 03/29/17 08:24 AM Re: AV receiver vs. stereo Amp? [Re: Rock]
MatManhasgone Offline

Registered: 05/06/14
Posts: 986
Loc: Lost in the great wide yonder
I have a different take on it. Your NAD will have a better amplifier inside of it. With a torrodial power transformer. I am going to guess that it is some sort of digital amplifier inside but likely has some analog domain inside it as well.

The Denon is pure digital. So you are loosing out on some of the warmth that you are use to with the NAD. I found from my own experience that every receiver that i have bought since 2005 have sounded empty. All except the last unit, the Anthem. That however cost far more than I generally paid in the past.

I don't know if the digital domain gets the same sound when it is done on the cheep.
Anthem: AVM60
Axiom: ADA1000, LFR1100, VP180, QS8, EP500, M3, M3comp
AudioSource: Amp One/A

#424587 - 03/29/17 09:10 AM Re: AV receiver vs. stereo Amp? [Re: Rock]
BBIBH Offline

Registered: 01/10/02
Posts: 1260
Loc: Canada
Perhaps you can describe what you are trying to achieve with this testing? The NAD is a solid unit, albeit without all the bells and whistles. I used a 7240 for years driving Axiom AX3's and later M80's with an EP350 to great joy.

If your trying to get the M22's and EP500 to work within the frequency ranges, I originally connected my 7240 to the High Pass inputs on the EP350 and then ran cables to the M80's. The sub acts like an AVR would by setting the limits on frequency passed to the downstream speakers.

This required extra cables, but worked well. Not sure if the newer subs still offer this capability.


#424589 - 03/29/17 09:59 AM Re: AV receiver vs. stereo Amp? [Re: bridgman]
Rock Offline
old hand

Registered: 07/22/15
Posts: 71
I would test it again to see if all DSP is disabled.

High range to me means high frequencies, not loud.

Still wondering if a more expensive receiver would make more difference.

Currently considering to get a used Pioneer Elite Receiver Model VSX-21TXH 400 W for another try.

#424590 - 03/29/17 10:01 AM Re: AV receiver vs. stereo Amp? [Re: MatManhasgone]
Rock Offline
old hand

Registered: 07/22/15
Posts: 71
Good point. I could feel the difference between pure digital and hybrid digital and analog.

#424591 - 03/29/17 10:03 AM Re: AV receiver vs. stereo Amp? [Re: BBIBH]
Rock Offline
old hand

Registered: 07/22/15
Posts: 71
EP500 doesn't have a high pass out for downstream speakers. So I may have to use AVR or get another AMP to separate the frequencies.

#424592 - 03/29/17 11:15 AM Re: AV receiver vs. stereo Amp? [Re: Rock]
brwsaw Offline

Registered: 10/12/12
Posts: 1781
Loc: Canada
Maybe Ian or another member with a EP500 can should be able to twist the cable ends together at the EP500 and not need an "output".
Run your left and your right cable to the sub, join the ends of these cables with the ends of the cable needed to reach your speakers by twisting the ends together, insert and tighten. Once for the left, once for the right.
Set your crossover using the subs crossover adjustment/knob.
Remove any extra equipment, try with just the Nad and a player of choice as per the recommendations given.

Edited by brwsaw (03/29/17 11:16 AM)
Thinking about co-locating my 4 powered Paradigm subs between my LRR and my LR.
A tower of power.

#424593 - 03/29/17 11:49 AM Re: AV receiver vs. stereo Amp? [Re: brwsaw]
Rock Offline
old hand

Registered: 07/22/15
Posts: 71
I doubt that crossover of the sub would do anything to filter the low frequency when just simply twist the two cables. The reason is that the signal you pass to the speakers is exactly the same you get from the amp since they don't pass through the sub at all.

I maybe wrong:)

#424594 - 03/29/17 12:18 PM Re: AV receiver vs. stereo Amp? [Re: Rock]
cb919 Offline

Registered: 02/17/09
Posts: 1165
Loc: Ottawa, Canada
Hi guys, this was discussed recently over in this thread .

Just scroll down to JohnK's and 2x6Spds posts which have great info on bass management and what signals go where.
On-Wall M5HP LCR, QS8 & EP500 in 7.1

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