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Author Topic: Crown LPS series power amplifiers  (Read 84073 times)

Offline Glennox

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Re: Crown LPS series power amplifiers
« Reply #150 on: March 02, 2011, 06:42:26 PM »
Sir C12 500mb ang ilagay mo, yun talaga ang para sa MB 378..it will not MB 378 if its not for that driver..

...Korek ka bossing...sa installation namin kinabit kasi sa auditorium...1 pair lang pero dulo-dulo ang range...ganda ng dispersion saka linaw ng mids...,, :wink:

...Lps 800 ang amp namin sa highs at Lps 2500 para sa mids...hataw!...,, :wink:
« Last Edit: March 02, 2011, 06:44:44 PM by Glennox »

Offline mackie

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Re: Crown LPS series power amplifiers
« Reply #151 on: March 02, 2011, 09:32:24 PM »
Thats good then..lakas talaga nyan, linis pa at di pa masakit sa tenga, kumusta performance ng LPS 2500 with the C12500MB, di ba nag cclip?, ano freq cut off mo sa mid at hi.

Enjoy.....

Offline luffy

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Re: Crown LPS series power amplifiers
« Reply #152 on: March 02, 2011, 11:17:54 PM »
Thats good then..lakas talaga nyan, linis pa at di pa masakit sa tenga, kumusta performance ng LPS 2500 with the C12500MB, di ba nag cclip?, ano freq cut off mo sa mid at hi.

Enjoy.....

+1, mukhang kapos ang LPS2500 sa C12 500W

Offline mackie

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Re: Crown LPS series power amplifiers
« Reply #153 on: March 03, 2011, 12:14:03 AM »
Di ko pa nasubukan LPS, pero according to its spec e kapos sya sa 378, It will do the job but it will not unleash the power of 378. At least 1000w rms sa 8ohms ang power amp mo dapat.

Offline Glennox

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Re: Crown LPS series power amplifiers
« Reply #154 on: March 03, 2011, 02:04:54 PM »
Thats good then..lakas talaga nyan, linis pa at di pa masakit sa tenga, kumusta performance ng LPS 2500 with the C12500MB, di ba nag cclip?, ano freq cut off mo sa mid at hi.

Enjoy.....

...Bossing mackie C12 300mb po ang pina-install sa 378 namin para pasok ang LPS2500....ganda ng response!...pero sa next project namin C12 500mb na!...Baka QSC GX7 ang ipangdadrive namin sa C12 500mb...,, :wink:


Offline tjlimjoco

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Re: Crown LPS series power amplifiers
« Reply #155 on: March 06, 2011, 04:03:04 PM »
...Bossing mackie C12 300mb po ang pina-install sa 378 namin para pasok ang LPS2500....ganda ng response!...pero sa next project namin C12 500mb na!...Baka QSC GX7 ang ipangdadrive namin sa C12 500mb...,, :wink:

B0z it0 ba yung bag0ng Qsc GX7?

http://www.qscaudio.com/press/news.php?id=300

Offline stoney73

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Re: Crown LPS series power amplifiers
« Reply #156 on: March 06, 2011, 06:04:40 PM »
"The wrong piece of gear, at the right price, is STILL the wrong piece of gear".

Offline konastinky

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Re: Crown LPS series power amplifiers
« Reply #157 on: March 07, 2011, 04:36:43 PM »
ask lang sir sa xprnce nyo sa lps2500 anong klaseng speaker or brand spec nang speaker ang kayang kaya nang lps na drive... in stereo mode and bridge mode? planning to have those... :?

Offline eirol_99

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Re: Crown LPS series power amplifiers
« Reply #158 on: March 07, 2011, 07:38:31 PM »
OMG  :-o just 15.5 lbs!!!  :evil:

power light kasi PSU nya kaya magaan, magkano kaya ito dito sa pinas? mas mura gx series sa rmx series ata. kaso no bridge mode at di recommended to drive 2 ohm loads. ok na for monitor amp duties at for small events with your favorite plastic speakers.

Offline eirol_99

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Re: Crown LPS series power amplifiers
« Reply #159 on: March 07, 2011, 07:50:11 PM »
magaan din yung bagong xls drivecore, class d power amp with SMPS unit. mura din ata, kaso baka pag nasira hirap na magawa, class d eh.

Offline tjlimjoco

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Re: Crown LPS series power amplifiers
« Reply #160 on: March 09, 2011, 04:38:03 PM »
ask lang sir sa xprnce nyo sa lps2500 anong klaseng speaker or brand spec nang speaker ang kayang kaya nang lps na drive... in stereo mode and bridge mode? planning to have those... :?

B0z kunG sa midRange speaKer 300 - 400 watts pas0k anG LPs 2500. 

Sa 18" naman, basTa naka bridGe-m0n0 anG LPs 2500 (8 0hms), sakt0 din.  :-)

Offline king_james

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Re: Crown LPS series power amplifiers
« Reply #161 on: March 12, 2011, 05:06:16 PM »
These LPS series sound as clean as the QSC's Rmx series.  The best part is -  they're just half the price. 8-) 8-)

Offline barracks01

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Re: Crown LPS series power amplifiers
« Reply #162 on: March 12, 2011, 07:14:03 PM »
These LPS series sound as clean as the QSC's Rmx series.  The best part is -  they're just half the price. 8-) 8-)

Definitely true! 8-)

Offline eller_04

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Re: Crown LPS series power amplifiers
« Reply #163 on: March 25, 2011, 07:32:52 AM »
Mga Sirs,

I just want to buy Crown LPS 2500. cno po may benebenta jan? thanks.

Offline tjlimjoco

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Re: Crown LPS series power amplifiers
« Reply #164 on: March 25, 2011, 10:58:45 AM »
Mga Sirs,

I just want to buy Crown LPS 2500. cno po may benebenta jan? thanks.

B0z nag-inquiRe ak0 sa Audi0phile din ng LPS2500. 2nd weeK of April anG e.t.a.  :-)

Offline mants

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Re: Crown LPS series power amplifiers
« Reply #165 on: May 13, 2011, 07:23:23 AM »
Sad to say,,ung lps2500 ko nasira,,8 months pa lng binili ko un s MB..nsa setup ako noon, ung load nya 4 n HF neusch 400 wtts 8 ohms maya maya may nangamoy sunog an then ayon nkita ko ung lps 2500 nka fault at nka clip na , kahit n e on at off ko at reset wla n talaga nka steady n ung light ng fault indicator nya kya ayon dnala ko sa MB mag 1 month na dpa tapos kya dko pa alam kong ano ang sira nya,,,,,,,Ano ang opinion nyo dto mga bossing,,,,,,tnks
« Last Edit: May 13, 2011, 07:35:29 AM by mants »

Offline ryanbairan

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Re: Crown LPS series power amplifiers
« Reply #166 on: May 13, 2011, 09:16:13 AM »
Sad to say,,ung lps2500 ko nasira,,8 months pa lng binili ko un s MB..nsa setup ako noon, ung load nya 4 n HF neusch 400 wtts 8 ohms maya maya may nangamoy sunog an then ayon nkita ko ung lps 2500 nka fault at nka clip na , kahit n e on at off ko at reset wla n talaga nka steady n ung light ng fault indicator nya kya ayon dnala ko sa MB mag 1 month na dpa tapos kya dko pa alam kong ano ang sira nya,,,,,,,Ano ang opinion nyo dto mga bossing,,,,,,tnks
baka walang parts,
ALECXIE LIGHTS AND SOUNDS RENTAL
 
www.alexiesoundph.n.nu

Offline tjlimjoco

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Re: Crown LPS series power amplifiers
« Reply #167 on: May 14, 2011, 04:21:15 PM »
Sad to say,,ung lps2500 ko nasira,,8 months pa lng binili ko un s MB..nsa setup ako noon, ung load nya 4 n HF neusch 400 wtts 8 ohms maya maya may nangamoy sunog an then ayon nkita ko ung lps 2500 nka fault at nka clip na , kahit n e on at off ko at reset wla n talaga nka steady n ung light ng fault indicator nya kya ayon dnala ko sa MB mag 1 month na dpa tapos kya dko pa alam kong ano ang sira nya,,,,,,,Ano ang opinion nyo dto mga bossing,,,,,,tnks

SaD talaGa yan b0z per0 tRy m0 din maG palit ng driveRs. GanYan din dati sa KevleR namin. ShorteD yata yung passive netw0rk kaYa bumiBigay ang amP namin.

Offline mants

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Re: Crown LPS series power amplifiers
« Reply #168 on: May 14, 2011, 11:15:26 PM »
SaD talaGa yan b0z per0 tRy m0 din maG palit ng driveRs. GanYan din dati sa KevleR namin. ShorteD yata yung passive netw0rk kaYa bumiBigay ang amP namin.
pwede nga na ganon din  ang nangyari sa lps ko bozing ,,kya pag magawa n ung lps2500 ko dko na gagamitin un sa ibang driver, ilalaan ko nlang un pag makakuha n ako ng paudio drivers,,tnks

Offline wesleywes

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Re: Crown LPS series power amplifiers
« Reply #169 on: May 15, 2011, 11:31:37 AM »
SaD talaGa yan b0z per0 tRy m0 din maG palit ng driveRs. GanYan din dati sa KevleR namin. ShorteD yata yung passive netw0rk kaYa bumiBigay ang amP namin.
bos wala bang proteksyon ung kevler amp at crown LPS 2500 pag short?
« Last Edit: May 15, 2011, 11:41:18 AM by wesleywes »

Offline mr. ultimate

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Re: Crown LPS series power amplifiers
« Reply #170 on: May 15, 2011, 12:04:55 PM »
Sir baka nag DC out yong LPS 2500 kaya nag shoted ang driver or crossover net work

Offline lighttech

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Re: Crown LPS series power amplifiers
« Reply #171 on: May 15, 2011, 11:25:32 PM »
Sir baka nag DC out yong LPS 2500 kaya nag shoted ang driver or crossover net work

IIRC, may crowbar circuit across sa output ng LPS2500 so kung sakali man na magkaroon ng significant DC sa output ng LPS2500, maa-activate yung crowbar circuit at i-shoshort out yung output para mag open yung fuse sa output. therefore hindi makakarating yung DC sa driver or crossover network. kaya hindi DC ang reason kung nag"shoted" ang driver or crossover network.

possible things that might have caused the failure are
1. oscillations,
2. if the HF drivers are used with 2nd order passive cross-overs, it could be that there was significant power at the resonant frequency of the LC crossover. If the HF drivers somehow opened, then the unloaded LC crossover will appear as short circuit at the resonant frequency thus causing the amp to fail.
3. Third scenario is that since the amp was used for HF, it could be that the rail-switches were not fast enough to cope with the HF signals, causing them not to turn off completely.  This will make the rails stay at elevated voltage increasing the dissipation of the output transistors, heating them excessively leading to failure.

these are just probable scenarios that might have happened, and it is difficult to conclude without the evidences. parang CSI na a.

Offline mr. ultimate

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Re: Crown LPS series power amplifiers
« Reply #172 on: May 15, 2011, 11:37:35 PM »
IIRC, may crowbar circuit across sa output ng LPS2500 so kung sakali man na magkaroon ng significant DC sa output ng LPS2500, maa-activate yung crowbar circuit at i-shoshort out yung output para mag open yung fuse sa output. therefore hindi makakarating yung DC sa driver or crossover network. kaya hindi DC ang reason kung nag"shoted" ang driver or crossover network.

possible things that might have caused the failure are
1. oscillations,
2. if the HF drivers are used with 2nd order passive cross-overs, it could be that there was significant power at the resonant frequency of the LC crossover. If the HF drivers somehow opened, then the unloaded LC crossover will appear as short circuit at the resonant frequency thus causing the amp to fail.
3. Third scenario is that since the amp was used for HF, it could be that the rail-switches were not fast enough to cope with the HF signals, causing them not to turn off completely.  This will make the rails stay at elevated voltage increasing the dissipation of the output transistors, heating them excessively leading to failure.

these are just probable scenarios that might have happened, and it is difficult to conclude without the evidences. parang CSI na a.

+1  posible ganon nga ang nangyari

Offline dakilangpatricio

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Re: Crown LPS series power amplifiers
« Reply #173 on: May 15, 2011, 11:40:53 PM »
Sad to say,,ung lps2500 ko nasira,,8 months pa lng binili ko un s MB..nsa setup ako noon, ung load nya 4 n HF neusch 400 wtts 8 ohms maya maya may nangamoy sunog an then ayon nkita ko ung lps 2500 nka fault at nka clip na , kahit n e on at off ko at reset wla n talaga nka steady n ung light ng fault indicator nya kya ayon dnala ko sa MB mag 1 month na dpa tapos kya dko pa alam kong ano ang sira nya,,,,,,,Ano ang opinion nyo dto mga bossing,,,,,,tnks


anu sir ginawa nio nung nasira amp?? anung remedjo/pinalit nio pong amp? kasi the show must go on xempre hehe

Offline mants

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Re: Crown LPS series power amplifiers
« Reply #174 on: May 16, 2011, 06:04:35 AM »

anu sir ginawa nio nung nasira amp?? anung remedjo/pinalit nio pong amp? kasi the show must go on xempre hehe
tama ka sir the show must go on kya sinalpak ko na ung standby amps ko na MA10,at kung halimbawa n wla akong reserve amps d e connect ko nlang sa mid ung HF in parallel,,pra tuloy ang party at ng d nila bawasan ung bayad sakin hehe..
« Last Edit: May 16, 2011, 07:58:40 PM by mants »