"The" Amplifier Internals thread ...

Author

Message

Topic Search

Topic Options

The Builder View Drop Down

Old Croc

Joined: 03 January 2010
Status: Offline
Points: 3107

Posted: 07 April 2010 at 11:21pm

It just is.

Speaker Sol View Drop Down

Young Croc

Joined: 15 September 2009
Location: Ireland
Status: Offline
Points: 1320

Posted: 09 April 2010 at 9:48pm

Some pictures of the inside of the Crown Macro Tech 9000i

Power supply on the right, The amp is built upside down with all the component hanging from the top of the amp, I think there is a heat sink under the boards.

Power supplie seems to be able to do amazing things with a 13 amp, I recently replaced with a 16amp plug and gave it a direct line to a big 20k genny driving a pair of Stasys X it was very loud.

So over all I am very happy with the performance from this amp, I have been having problems bellow 40Hz but may have solved this by giving it a proper power supply but have not had a chance to test this.

I will be do a side by side comparison with an info 8 mk2 soon. I will post my unscientific results.

Centauri

Old Croc

Joined: 29 November 2004
Location: Newcastle Aus
Status: Offline
Points: 1792

Posted: 10 April 2010 at 2:20am

Looks virtually identical to the iTech series.

Xmax extreme View Drop Down

Registered User

Joined: 23 May 2006
Location: Pilipinas
Status: Offline
Points: 308

Posted: 10 April 2010 at 2:47am

Speaker Sol wrote:

Some pictures of the inside of the Crown Macro Tech 9000i

Power supply on the right, The amp is built upside down with all the component hanging from the top of the amp, I think there is a heat sink under the boards.

Power supplie seems to be able to do amazing things with a 13 amp, I recently replaced with a 16amp plug and gave it a direct line to a big 20k genny driving a pair of Stasys X it was very loud.

I will be do a side by side comparison with an info 8 mk2 soon. I will post my unscientific results.

NICE One... yeah identical to the ITEch.... and thats plenty of LC combinations... Clap

Maximum Excursion

Don't criticize your own competition, it looks like a publicity of your own commercial products.

levyte357

The 10,000 Points Club

Joined: 10 May 2004
Location: UK, London
Status: Offline
Points: 11743

Posted: 10 April 2010 at 7:26pm

andyamp wrote:

i have done in my old ones but no f

g way in my new smps ones.
there is some rather high voltages,and they bite.

My STR1500 will 'ave your SMPS mate..... LOL

"Who am I? I'm the guy who does his job.. You must be the other guy".

DjLeco

Young Croc

Joined: 21 April 2009
Location: Bucharest
Status: Offline
Points: 817

Posted: 14 April 2010 at 11:48pm

Crown XTI 4000, dropped during function.

The only one dead is FAN 7380 MX, the driver for IGBT's.

Some movies after repairing and testing on 4 ohms dummy load

http://www.youtube.com/watch?v=V96xrcXU8qw

http://www.youtube.com/watch?v=fEuSw52Kpcw

http://www.youtube.com/watch?v=A-a14-GZM1M

http://www.youtube.com/watch?v=-9Q75t8LVwU

http://www.youtube.com/watch?v=cc_2QZlk6fQ

http://www.youtube.com/watch?v=KUjZDakRpXA

http://www.youtube.com/watch?v=B7_hN94oDDk

Edited by DjLeco - 03 June 2010 at 10:25am

I'm A Stupid SMART Romanian...

DjLeco

Young Croc

Joined: 21 April 2009
Location: Bucharest
Status: Offline
Points: 817

Posted: 17 April 2010 at 2:37pm

I-Tech 5000 HD, very dissapointing for me....

http://www.youtube.com/watch?v=-FsEAIO2ZGI

http://www.youtube.com/watch?v=meM3qu96dvM

http://www.youtube.com/watch?v=gShWZ5CEqFg

http://www.youtube.com/watch?v=4gRio4dbFDc

http://www.youtube.com/watch?v=Y9otqUjSCwg

http://www.youtube.com/watch?v=PgtboRv1Mf4

http://www.youtube.com/watch?v=_ZGcPCJANvk

http://www.youtube.com/watch?v=kX27yqarkCM

I'm A Stupid SMART Romanian...

M4trix

Registered User

Joined: 23 June 2009
Location: Croatia
Status: Offline
Points: 445

Posted: 17 April 2010 at 4:07pm

Hi DjLeco,

you're probably aware that you've lost the Crown's warranty the moment you opened the cover of that amplifier? Tongue

Just joking! By the way, good vids. Unfortunately, I can't understand the conversation. Ermm

DjLeco

Young Croc

Joined: 21 April 2009
Location: Bucharest
Status: Offline
Points: 817

Posted: 17 April 2010 at 4:18pm

I'm telling something about huge power limmiting after 1 second of reaching max output power, also the amp cannot sustain the declared power, so it's a BURST power amplifier.

Also alot of distortions at more than 1000 Hz...

Personally I din't like how it works on dummy load.

Edited by DjLeco - 17 April 2010 at 4:19pm

I'm A Stupid SMART Romanian...

alabpro

Registered User

Joined: 25 August 2006
Location: Thailand
Status: Offline
Points: 33

Posted: 18 April 2010 at 8:16am