Help please - Do I need an amplifier for 7.2.4 system using a Denon 3700h?

[IndySummit]

Hello - I am installing a 7.2.4 system for Thanksgiving but not sure if I need a 2, 3, or 5 channel amp?

1) I bought SVS pinnacles, ultra center, ultra surrounds, two PB 2000 subs and four Polk Audio indoor/outdoor for atmos.
2) I bought a Denon 3700, 105w/channel
3) I bought a Parasound A23 two-channel amp, 160 watts/channel

My thoughts are to power the front right and left Pinnacles (20-300w at 88Db) with the Parasound A23 amp and power the remaining channels with the Denon 3700 AVR.

My question - should I purchase another amp to power the center and two surrounds?

The ultra center rating is 20-250 and the ultra surrounds are 20-200 watts w a 87Bb sensitivity.

I am able to return the Denon and Parasound and start over if that is best but I can't afford separates at this time.

I appreciate your thoughts and ideas,

Thanks everyone!
Mike

 

[PENG]

Hello - I am installing a 7.2.4 system for Thanksgiving but not sure if I need a 2, 3, or 5 channel amp?

1) I bought SVS pinnacles, ultra center, ultra surrounds, two PB 2000 subs and four Polk Audio indoor/outdoor for atmos.
2) I bought a Denon 3700, 105w/channel
3) I bought a Parasound A23 two-channel amp, 160 watts/channel

My thoughts are to power the front right and left Pinnacles (20-300w at 88Db) with the Parasound A23 amp and power the remaining channels with the Denon 3700 AVR.

My question - should I purchase another amp to power the center and two surrounds?

The ultra center rating is 20-250 and the ultra surrounds are 20-200 watts w a 87Bb sensitivity.

I am able to return the Denon and Parasound and start over if that is best but I can't afford separates at this time.

I appreciate your thoughts and ideas,

Thanks everyone!
Mike

Congrats on your great choice of speakers!

If it is not too late, you probably should consider returning the A23/A23+. I have been using Bryston SST amps and Halo A21 for years, while they are nice and powerful but I really enjoy my new Hypex and Purifi based low cost amps now. I have not spent enough time on comparing them yet but my initial impression is that they are every bit as transparent as my other class AB amps, plus they are near silent. I am sure at my age I must have lower sensitivities to high frequencies but I am very sensitive to hum and hiss, yet these class D amps are really quiet compared to all my other amps including the A21.

The reason I am going to get rid of the A21 soon is that it is now looking ridiculously big (it seems to get bigger and bigger these days, and much too heavy for a 250/400 W 8/4 ohm amp. Take a look of how they compare below and if real estate is a consideration, you can see why I prefer my new amps.

This little thing will give you at least 3 dB more headroom than the A23+ and at lower THD+N.

Your important first step is to estimate your actual need using an online calculator. If you need help on that just let us know.

Please read the instructions carefully before using either of the following:

Peak SPL Calculator (hometheaterengineering.com)
Crown Audio - Professional Power Amplifiers

Your should also email SVS for their opinions, but do provide them with the following info:

- room dimensions
- seating distances.
- how loud do you listen to music and movies

 

[IndySummit]

Thank you for the help and suggestions. I will contact SVS and consider using a class D amp. I like their effeciancy as well. Thanks again. Mike