Denon 1911 & Rti A7 / Amplifier Question

cfrizz

thmsbeeman wrote: »

These speakers are only the second set of polks i actually kept after hearig them,but when i first recieved them i went through a 80 hour break in period to ensure these speakers broke in evenly.After that i found the tweeters to be a little harsh.I was also lacking the punch feel on ht.It wa like the tweeters were over powering the rest of the speaker.Thats when i realized these speakers needed more power.They sounded beautiful when i pushed the reciever almost at max,And pretty good at normal volume.Then i added the power amp to make sure i wasnt wasting time with the newer rti line and i was amazed.The power amp made these speakers sound beautiful at any level.Once they recieved the power they needed everything smoothed out evenly and now its a home theater that you dont only hear every detail but you feel it aswell.

You have just described all the advantages of adding separate amplification. Great system you have put together, welcome to Club Polk!

tonyb

thmsbeeman wrote: »

I couldnt agree more.If you put the power to your system it requires you will push out faint noises and sounds that were there all along ,but were not noticeable from your seating position because there wasnt enough power to make that particular sound extend throughout the room

Exactly....I was being somewhat fececious to the poster who thought we claimed the detail came out of thin air.

booyaolian

tonyb wrote: »

The extra detail isn't created out of thin air, it's always been there. It's extracting it, and making it more profound,audible, that's the difference.
Can't help ya too much on the confused part,but I will tell you to bring your favorite cd and go around to different shops,play it on different systems,speakers,amps, and report back.

BTW- put the cans 10 feet from your ear, like a home speaker is, and tell me how good they sound.

When there's enough power then the additional wattage will not be used.
How hard is it to push the A1? NOT very hard......Then why do you need the power to bring out the "faint" sound? Where was the faint sound hiding? 4ohm? Look at the graph again.

oh as I said u didn't even ask about the room size.....why does it have to be 10 ft? I put using an can as test subject to put the end of this More power always give better sound mombo jumbo.
As for his listening position could be 5 ft or less. Then why does he need an upgrade. Again, You have no hard evidence in why you need that much power to push the Polk.

tonyb

booyaolian wrote: »

When there's enough power then the additional wattage will not be used.
How hard is it to push the A1? NOT very hard......Then why do you need the power to bring out the "faint" sound? Where was the faint sound hiding? 4ohm? Look at the graph again.

oh as I said u didn't even ask about the room size.....why does it have to be 10 ft? I put using an can as test subject to put the end of this More power always give better sound mombo jumbo.
As for his listening position could be 5 ft or less. Then why does he need an upgrade. Again, You have no hard evidence in why you need that much power to push the Polk.

Dude,go back and read the original post. He has 2 A9's, 2 A7's, running 7 channel HT. What cans have to do with anything is beyond me. The average receiver in 7 channel mode drops off a cliff for power delivered to all channels. Please enlighten me on your experience with amplifiers and big floorstanders in a 7 channel HT. Doesn't matter how easy a speaker is to push,it's about current,not watts,and any speaker can benefit from a solid power source.

mdaudioguy

booyaolian wrote: »

Then why does he need an upgrade. Again, You have no hard evidence in why you need that much power to push the Polk.

It's not about us thinking he needs an upgrade, it's about him wanting more from his gear and believing that the addition of an amp might do the trick. The general consensus in this world is that the addition of a decent quality amp will more likely than not help him to achieve a fuller, perhaps more pleasing sound from his speakers.

Why you gotta be comin' in here and be gettin' all argumentative? And really, you got nothin'.

polkseller

ok everybody, it's not high wattage that does make speaker sound better it's CURRENT that drive them and amplifier design. AB, class D, A, H or other.

A typical receiver gives more or so 1 AMPERE per channel, vs 20 ampere reserve per channel for a solid power amplifier that makes a big difference at low volume and to saturate the crossover and speaker with sound !

That's why older HARMAN KARDON receiver were so good and they were compared to power amps and give similar sound. Harman Kardon design is 30-35- to 50 AMPS of current to 5 or 7 channels, that's high current amplification and FULL bandwidth amplification 1hz to 130khz.

You get the idea.

Some Yamaha or DENON use this High current design, but it's usually the most expensive and it's still ((mid-current) cuz while it's better than 1 or so amp per channel, it's not much more and far away from STEREO AMP or multichannel amps from ROTEL, EMOTIVA or any other power amp.

I used the RTI A7 with many receivers, I find it perform best with TOP of the LINE yamaha rxv-1900 minimum, or DENON 3310 HK 7300 and above. When I say best, I mean it perform ok and acceptable compared to cheaper receivers. SO ITS A MINIMUM !!! TRUST ME those A7 needs high current to shine !

Yamaha Z7 or marantz 8002 if you still want a receiver, but buying a denon 3310 and a external power amp might cost you less and will be the best option in my opinion.

Always buy high quality STEREO RCA to hook the receiver to the power amp, invest in Monster interlink 400 mkII or equivalent dual balanced solid conductors.Some other members could also recommend some that are cheaper and really good. Maybe Emotiva RCA also.