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Old 2nd October 2006, 13:50   #811
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Quote:
Originally Posted by ST7677

Hey Veyeron,
Where did you read this Tru producing 300 RMS per channel? There is lot of Hype around but not all is true!

They are one of the best, and are highly under ratted, But not by 50%.I guess they would be producing more around 200 RMS max per ch.
ST,

TRU amplifier designs are different from normal AB amplifers they are technically very robust and very powerful.

Some of the features of T 4.150 i would like to mention :
  • Class AB
  • 2000 Watts capable output stage
  • 2 oz PC Board
  • High Current unregulated Bi-polar power supply
  • 8 guage speaker wires and 8 guage power wires for PCB
  • Dual Differential Transformers
  • Metal Film Resistors
  • 16 Nos 250Volts TO-3 output devices
  • 16 Hexfet Power Invertors
  • 4 No 50Volts 10000mF caps
  • Dual Hand Wound power transformers
  • WIMA Caps
  • Tantalum shunt capacitors
and more

The TRU can deliver 2000 Watts in peaks, so loads of headroom is there moreover they use metal cans TO-3 devices which operate at 250 Volts which are very efficient and have loads of power reserves. These output transistors are used in professional amplifiers to meet huge power demands in tough applications like touring sound, concerts etc.

The PCB board is heavy and internal cabling is all 8 guage. The power supply includes dual hand wound toroidals along with 40000mf of capacitance. The amplifier has high efficiency.

It surely does deliver close to unclipped 300 Watts per channel at 5Volts preamp input which means the output stage totals for 1200 Watts which is well under its 2000 Watts capability.

TRU is like an elctronically limited car with top speed restricted to 180 or 250 Kph but are capable of going beyond 300 Kph.

The TRU TO Series, Hammer, Copper series (all discontinued) were very powerful machines built to last designed by legendary designer Late. John Fairchild, one of his creation was famous Cerwin Vega Stroker subwoofer, he was also main tech force behind Fosgate Electronics where he designed famous Punch amps.

Lastly I measured max. 38 Volts AC on speaker output terminals with preamp at 5Volts input. Poor Mclaren who was holding the subwoofer cables jumped as he got AC shock

Last edited by Autophile : 2nd October 2006 at 13:53.
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Old 2nd October 2006, 14:31   #812
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Quote:
Originally Posted by Autophile
Lastly I measured max. 38 Volts AC on speaker output terminals with preamp at 5Volts input. Poor Mclaren who was holding the subwoofer cables jumped as he got AC shock
how do we reverse calculate the wattage here....from the volts....
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Old 2nd October 2006, 15:09   #813
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I am sure you can do it
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Old 2nd October 2006, 15:48   #814
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here is a look inside the tru amp the stuff which is inside it is very well made...good job....




the above pics are taken from ampguts web site...

the power supply section is well made but look what I have to show to every body....4 torodial transformers and 4 chokes....



the above pic is only the power supply of a amp..this amp is capable of making of ...
2 x 330W @ 4 ohms (0.03% THD at 90%)
1 x 2400W @ 2 ohms bridged

rest of the info i will post later today....


Quote:
Originally Posted by Autophile
I am sure you can do it
Sir i am using this link to calculte the voltage am I right .....help...

http://www.caraudio911.com/tutorials...et/voltage.htm

if I put the amplifier output to 360 watts then the voltage comes to 37.9 volts....is this correct....
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Old 2nd October 2006, 18:25   #815
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Yeah the figure is correct. A 360 Watts amplifier will give 37.94 Volts AC.

In this case I did not want the amplifier to go beyond 300 Watts at max. demands. Hence dialled in for 34.64 Volts.
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Old 2nd October 2006, 18:45   #816
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here is the link of the above amp.....

http://english.gttrading.it/easysite/scheda3.asp?livello=3&Marchio=StegΓ=K%20competitio n&Modello=K2|04&pg=1
Stereo RMS power @ 4 ohms Watt 335 x 2
Stereo RMS power @ 2 ohms Watt 650 x 2
Stereo RMS power @ 1 ohm Watt 1200 x 2
Bridged mono RMS power @ 4 ohms Watt 1300 x 1
Bridged mono RMS power @ 2 ohms Watt 2400 x 1
SERIALPOWER RMS power @ 4 ohms Watt 4800 x 1
Min. output load impedance - stereo / bridged mono Ohm 1 / 2
Damping factor @ 4 ohms >1000
Input sensitivity range V 0,25,0
Input impedance Kohm 10
Filter [quantity] type [1] HP + [1] LP
AQXM2 filter frequency range Hz 228500
SW4FQ filter frequency range HP / LP Hz 60,80,100,120 / 60,70,80,90
Filter slope (mono mode) dB/oct. 12 (24)
Frequency response - 3dB Hz 5-165000
THD distortion at 1 KHz - 90% nominal power @ 4 %0,03
DIM distortion - 90% nominal power @ 4ohm % 0,005
Signal/noise ratio - 10 Hz to 22 KHz - 90% nominal power dB 78
Signal/noise ratio A weighted - 10 Hz to 22 KHz 90% nominal power dB 108
Supply voltage adjustment Volt 1016
Recommended power cable size (per 5m length) mm2 / AWG 54 / 0
Maximum current absorption (stereo) @ 4 ohms 14.4 V A 74,1
Maximum current absorption bridged mono @ 4 ohms 14.4 V A 149,3
Idle current without input signal A 1,82
Minimum current absorption with amplifier powered off mA <1
Fuses A 175
Weight Kg 7,3

CEA-2006 A COMPLIANT DATA
POWER RATING watts per channel @ 4 ohms <1% THD+N 345 x 2
SN RATIO reference: 1 Watt @ 4 Ohms 85 dBA


the output stage is capable of of 3528 watts with 28 nos 127 watts mosfets and the power supply is capable of 960 amps using 16 nos 60 amps mosfets....quite underrated.........
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Old 2nd October 2006, 19:21   #817
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Impressive specs. How much is it for ?
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Old 2nd October 2006, 19:47   #818
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Quote:
Originally Posted by Autophile
Impressive specs. How much is it for ?
It is priced quite reasonable....but less than the amp with similar specs....
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Old 2nd October 2006, 19:57   #819
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Ok I got that it is reasonable, but how resonable is it and what are other amplifiers with similar specs are you talking about.
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Old 2nd October 2006, 21:40   #820
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Talking I'm BAK!!

Boys!!... Back after hibernation ... was slightly indisposed immly after coming back from Bangly..first health.. then work.. then meet... Today is the first time I am loggin on in almost 10 days...

LIke Zak clarified... the snaps are all in JB's camera... now that they have gotten back to Delhi, I will soon collate them and have them put up! However this is going to take another day (or two!) given the amount of typing I am going to have to do (and the speeds I do them at!) -- Till then --- SABR' >> Meetha -- etc etc..

In the meantime I can see theat the ppl who 'witnessed' and 'heard' the install have put up their 'experiences/comments' ... A few more have since heard the set up at the Tri-State meet... trust them to put down their views shortly as well!

Hmmmm.. STEG uh... I have posted earlier on these amps... looks like they are earning themselves a reputation - good or bad remains to be seen. (but sure are lucious looking - and specs!)
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Old 2nd October 2006, 22:05   #821
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Quote:
Originally Posted by low_bass_makker
and steg they sure are very solidly built with some premium and exotic componets like tru and others with there some amps which are even 0.25 ohms stable, they sure are some soild amps for seroius audiophiles, in there series they have a A class amp which has some serious awards....and one more thing they are very smartly priced.......
I know I know... I researched extensively remember.... and have been following this amp thru its stages! - I had even posted some details about them here in T-Bhp some four-five months back

The snaps... they WILL be up soon!

Last edited by kb100 : 2nd October 2006 at 22:09.
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Old 3rd October 2006, 13:08   #822
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LBM, JB, lets stick to the Install. And LBM, you dont need a website for calculating voltage from power.
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Old 3rd October 2006, 15:02   #823
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Guys, please. Like the man said, we need to stick to KB's install. JB... i hope you are putting up the pics soon.

Any posts on this thread NOT related to KB10000000000's installation will be removed from now on.
Thanks for your cooperation.
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Old 3rd October 2006, 16:16   #824
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Guys,
I am only interested is seeing KB's intall pics. I have closed and opened this thread TWICE to keep it on topic. The next time it will stay closed and WE all will be the loosers.

I have deleted a few posts above to make my point. I hope everyone gets it.
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Old 4th October 2006, 12:53   #825
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some thing related to kb ka db

http://www.team-bhp.com/forum/303665-post169.html
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