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#419654 - 06/29/16 11:34 PM Re: Revel? [Re: AAAA]
dakkon Offline
connoisseur

Registered: 02/08/04
Posts: 1863
serenity,

i'm using a krell fpb 300cx to power the front drivers on my lfr's and a kav 205a to power the rear drivers.

the 300cx is rated down to 2ohms @ 1200w per channel, the 250a is rated down to 4 ohms @ 500w per channel.

granted, you dont need that much power... but, to Ians comment about dynamic head room i thought i'd chime in...

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#419657 - 06/30/16 05:24 AM Re: Revel? [Re: AAAA]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
My speakers have never sounded as muscular as when I demo'd them on a huge $$ classe amp setup at the dealer. I had always thought it was just a good room we were in.

I thought I had a powerful setup. I guess it's all relative. smile One thing about this hobby. The more you learn the more you realise you dont know. Freaking hindsight biting me again.

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#419658 - 06/30/16 09:31 AM Re: Revel? [Re: AAAA]
dakkon Offline
connoisseur

Registered: 02/08/04
Posts: 1863
I'd tell you to enjoy what you have. I'm probably running more power than most.

Similar thing as cars.. Right? Every time i see someone with a gt3 cup car i wish i had one (kind of)...

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#419659 - 06/30/16 09:53 AM Re: Revel? [Re: AAAA]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
I'll just have to rent one and see if big #'s make a difference worth the outlay. And will report back as usual. Pro amps are super cheap to rent. $50/month.

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#419662 - 06/30/16 12:15 PM Re: Revel? [Re: AAAA]
dakkon Offline
connoisseur

Registered: 02/08/04
Posts: 1863
The pro amps are quite popular with the dedicated theater room crowd. Very cost effective power.

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#419666 - 06/30/16 04:12 PM Re: Revel? [Re: AAAA]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
Call me proactive.... It might rain saturday. grin

Rented a yorkville amp at 1800 a side.. My wife says "I hope you have fun with it. But I hope it doesn't make a difference." She knows me all too well. lol.


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#419673 - 07/01/16 04:41 AM Re: Revel? [Re: AAAA]
Ian Offline
President
connoisseur

Registered: 03/13/01
Posts: 1328
I have not checked the specs of the amp you have rented but speaking in general terms these sorts of amps tend to have no dynamic headroom and limiter circuitry, so the wattage rating can be tough to make a comparison with. Does this amp have two power cords?
_________________________
Ian Colquhoun
President & Chief Engineer

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#419675 - 07/01/16 07:34 AM Re: Revel? [Re: AAAA]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
I think the quoted1800 is at 2 ohms. Its a class H 3 tiered rail switch design. One 15A cord on it. Havent hooked it up yet. Wanna be sure I dont cook something. Reading manual thoroughly.

8ohm 600w
4ohm 1000w
2ohm 1800w

This is with the 2ohm voltage limiting mode engaged. burst rated at 1000/1800/2500

1000/1800/NA 4ohm mode no limiting mode. burst rated at 1800/3500.

I will run it in limited 2ohm mode so I reduce the risk of letting the smoke out of my speakers.... I expect a noise floor when I hook this up. No idea how it will respond to my puny speakers.

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#419676 - 07/01/16 08:35 AM Re: Revel? [Re: AAAA]
Ian Offline
President
connoisseur

Registered: 03/13/01
Posts: 1328
What are you using for speakers?
_________________________
Ian Colquhoun
President & Chief Engineer

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#419677 - 07/01/16 08:56 AM Re: Revel? [Re: AAAA]
AAAA Offline
connoisseur

Registered: 03/28/14
Posts: 1593
Mordaunt Short Mezzo 6's.

Amp in system and level matched. Running amp wide open (no attenuation) with preout level lowered to compensate. 1db volume changes correspond to 1db spl in room. All should be well gain wise. Slight hiss at 2' from speakers with no signal playing. Quiet at mlp.

Just starting to listen... I might get brave and go to 4ohm full voltage mode.

I am just barely lighting the second meter light at 75db. Its still asleep.

This is fun.


Edited by Serenity_Now (07/01/16 09:15 AM)

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