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Measuring Amplifiers - Page 40

post #1171 of 1917
Quote:
Originally Posted by chasw98 View Post

Yes, both were tested and both measured almost identical. No hiccups at all. They are rock solid old time big heavy iron amps. No blown fuses, but a bunch of heat out of the top and the fans would kick in regularly. Voltage was not sucked down, but they were running on a dedicated 30 amp circuit and would draw close to 20 amps.

Good to hear. Not bad at all for some 20 year old amps. Not even sure what I'm going to do with them yet. Probably try them out on my subs to compare them with the CE4000's then move them to a pair of my Klipsch CF4's and try that out. Thanks a bunch Chuck. PM, or email me when you want to take care of the shipping details. No rush at all, just whenever.

Just an FYI. Chuck went WAY out of his way to help me out with aquiring and testing these Techron amps, so I've got to give him mad thanks. The amp testing and other stuff he's doing are not all fun and games and it's a real asset to have him around here.
post #1172 of 1917
Chuck,

Are the FaceAudio tests complete...or eat least do you have data.

Thank you
post #1173 of 1917
Thread Starter 
Quote:
Originally Posted by TheEAR View Post

Chuck,

Are the FaceAudio tests complete...or eat least do you have data.

Thank you

No, not complete. Yes, I have some, not all, data. Life intrudes sometimes. It will be this weekend most likely.
post #1174 of 1917
I'm afraid to go back and read, but I have to know.


Did the XTi2000 pass muster after all was said and done?

What is the cliffnotes version of the test results? Do I need to sell the thing?

All I know is that it pounds the screws out of the drywall in my house:
post #1175 of 1917
No Tundr, you don't need to sell anything.
post #1176 of 1917
Good to know, especially after I got into the software EQ program. I really like this amp.
post #1177 of 1917
I use the XTi2000 and XTi4000 to drive RL-p 15's and REVO 15's,no missing bass. In fact,it will shake N bake.
post #1178 of 1917
Thread Starter 
Everyone has anticipated this measurement test and most of you have been very patient, Arthur? SO here it is, a Face Audo F1200TS sent to me by penngray.





post #1179 of 1917
Thread Starter 
More pictures..........





post #1180 of 1917
Thread Starter 
Finally, the results....



post #1181 of 1917
Thread Starter 
Here is a new set of measurements. 1.00% THD is the defining factor here for 4 ohms and 8 ohms.



And here are the published specifications from the owners manual. If you have a hard time reading this go to the web page for the amplifier. http://www.faceaudio.com/pdf/FaceAud...nersManual.pdf

post #1182 of 1917
Thanks for the test, Chuck! For those who can't read the published specs (probably most of us), it's 650 @ 8 ohms stereo and 2000 @ 8 ohms bridged. No distortion or frequency range specified. Then it's .05% distortion at 1200W into 4 ohms, 1kHz. Pretty sparse specs to say the least but fortunately we have our old pal Chuck to keep 'em honest.
post #1183 of 1917
The Face Audio is not bad at all, 900 over watts for 4 ohms 1%, 2 ohms its stable (but very far off from specs), and is very accurate to the paper specs for 8 ohms. At least it maintains the power when doing 20Hz.
post #1184 of 1917
Not bad at all. For the price it does a competent job.

Thank you Chuck for the data.
post #1185 of 1917
I have mixed emotions here; seems to fall shy of the published 4Ω Stereo/1200W rating - this is what my modeling has been based upon.

I may very well never notice once implemented though

Larry
post #1186 of 1917
From ~800W to 1200W the gain in loudness is very slim. Still where are the almost 400W gone?

At least it is not another XTi1000 with its mighty 80W of titanic superpower to make your LMS-Ultra sweat.
post #1187 of 1917
Very true Arthur, although, I must admit that I'm disappointed here!

Larry

Quote:
Originally Posted by TheEAR View Post

From ~800W to 1200W the gain in loudness is very slim. Still where are the almost 400W gone?

At least it is not another XTi1000 with its mighty 80W of titanic superpower to make your LMS-Ultra sweat.
post #1188 of 1917
Most people don't like my aggressive threads;

Face Audio F1200TS
http://www.avsforum.com/avs-vb/showthread.php?t=1018027


Rated:
650w/ch @ 8 ohm
1200w/ch @ 4 ohm
2350/ch @ 2 ohms

http://www.faceaudio.com/pdf/TS.PDF

Tested:
What was Chucks 2 ohm test scores again ?

Gotta love that marketing "95% efficiency" rating
post #1189 of 1917
Guess that you wouldn't want to drive a set of Apogee Scintilla's ( sp? ) with that amp LOL..
post #1190 of 1917
Quote:
Originally Posted by thylantyr View Post

Most people don't like my aggressive threads;

Face Audio F1200TS

Gotta love that marketing "95% efficiency" rating


A friend of mine designs signal amplifiers for medical equipment, he has a class D design he's been working on, going for excellent efficiency. Right now, it is 92%, getting any more will result in compromises, maybe some genius somewhere can get 94% or MAYBE 95% in real world tested conditions.

Class H though?
post #1191 of 1917
Has somebody tabulated a list of all chuck tested amps and its specs in one file? It would be valuable reference


Chuck, looking forward to your American Audio v5001 testing!
post #1192 of 1917
Quote:
Originally Posted by mikeonyx View Post

Has somebody tabulated a list of all chuck tested amps and its specs in one file? It would be valuable referenc

It's in the first post of this thread.

Thanks again Chuck for all your work. Do have any bridged results for the Face?
post #1193 of 1917
Quote:


From ~800W to 1200W the gain in loudness is very slim. Still where are the almost 400W gone?
?

I remember the aftermath to the Dayton 1000W amp test when it only did aroun 600W instead of 1000W into 4 ohms.

I agree that the difference isnt much in terms of dBs but its still a 400W difference.

I still think all these test continue to show the EP2500 as an easy DIY sub amp choice.
post #1194 of 1917
I nominate the Peavey CS4080HZ as the step-up contender in the bang/buck category.

1250/2040 W/ch @8/4 ohms (there's a similar model rated with same max power at 2 ohms), and it's well spoken of at Prosoundweb.

I just got a refurb for $800.

At moderate HT levels the variable-speed fans are only audible if I put my ear up to it.

It might be my imagination, but I think it sounds a little better than my K2 (now available).

With my pair of Ava 18's rewired to 8 ohms, I get the same power as I was at 2 ohms before.

It's also impressively dense at 58 lb in a 2 rack space unit.
post #1195 of 1917
I agree; unfortunately, I have two of these guys still in the box which I purchased solely based upon their 4 ohm spec - this test reveals 66% of published spec. I may reach out to seek resolution here; I believe this missing 1/3 would indeed factor into my planned overhead.

Chuck, could you please test bridged capability?

Regards,

Larry


Quote:
Originally Posted by penngray View Post

I remember the aftermath to the Dayton 1000W amp test when it only did aroun 600W instead of 1000W into 4 ohms.

I agree that the difference isnt much in terms of dBs but its still a 400W difference.

I still think all these test continue to show the EP2500 as an easy DIY sub amp choice.
post #1196 of 1917
The Face F1200TS doesn't really do that much better than a EP2500 considering the additional cost. I'd still take a XS1200/XS900, PLX3602/3402, CE4000, pair of EP2500's over it. It does look the best of those though.
post #1197 of 1917
Quote:


Chuck, could you please test bridged capability?

There seems to be a small problem with running the face amp in bridged mode

I never tried it at home either but Chuck did, lets just say I hope the warranty is good
post #1198 of 1917
General rule for bridged:

Take the 2 ohm stereo score and double it, this will be the
estimated 4 ohm bridged mode power.

ie, if a amp tests at 500w/ch @ 2 ohm stereo, bridged will be
1000w ~ @ 4 ohms, and 500w @ 8 ohms.

Per Chucks test - Face Audo F1200TS

Estimated Bridged Power;

20hz - ~ 1400W @ 4 ohms
1khz - ~ 1700W @ 4 ohms
20khz - ~ 70W @ 4 ohms
post #1199 of 1917
Quote:
Originally Posted by TheEAR View Post

At least it is not another XTi1000 with its mighty 80W of titanic superpower to make your LMS-Ultra sweat.

Look at the 2 ohm 20khz test [unless it's a typo]
post #1200 of 1917
Thread Starter 
Quote:
Originally Posted by penngray View Post

There seems to be a small problem with running the face amp in bridged mode

I never tried it at home either but Chuck did, lets just say I hope the warranty is good

Yes, there was a problem with the amplifier. It lost a lot of its 'magic smoke' when I turned it on in bridged mode. But there is a bright side to this story.

I spoke with Breton at Face Audio this morning and I explained what happened to the amplifier. He asked for the serial number and said a new amplifier will be shipped by FedEx to me today. He also emailed me a FedEx prepaid return shipping label to send the broken amplifier back with. I believe he is sending the new amplfier overnight so that I should receive it tomorrow. I explained to Breton that I was not the owner of the amplifier and the circumstances as to why I had the amp. He said that is not a problem and would gladly send the amp to my address instead of to penngray's house where it would sit outside until penngray gets home from traveling.

THIS IS INCREDIBLE CUSTOMER SERVICE!

Did I say that loud enough? Face Audio is to be commended for their customer service and ease of use.

When I get the new amplifier I will continue testing and perform the bridged mode tests and post the results when I am done.

Chuck
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