Author Topic: Surplus amps (Read 991079 times)

nels76 · « **Reply #420 on:** Feb 22, 2004 at 06:57 AM »

Quote from: nels76 on Feb 20, 2004 at 06:57 PM

First Impression sa Sony ES Amp.

IMHO, i found this amp neutral sounding connected to my MS 902 and having a VCD/CD Player as the source.

Haven't connected though to my MS 912.

And also this AMP does not get hot easily compared to my Kenwood Receiver on stereo use.

Better dynamics or should I say full-bodied ang sound compared to the 9060D on stereo.

I thought the clipping would be solved when I change AMP. Hindi pala. Still I am not comfortable to listen to high volume. Anyway, this SONY ES - MS 902 is set up in my room (3m x 3m). I hope harshness will be gone when I move the set up to the Sala next month.

Update:

SONY ES AMP vs. 9060D

SONY: Yup. akyat is right. mas mataba tumunog, but bass is stiff and ear piercing (mid and high) at high volume. Malakas and has lots of power reserve.

9060D: Bass is refined, lower, softer. Much more forgiving to the ears at high volume. Much comfortable to listen to.

cheers.

BGA VI · « **Reply #421 on:** Feb 22, 2004 at 10:53 PM »

Hi, sir akyat, may question lang ako, ilang watts na transformer ba ang kailangan para sa mga surplus amps, para safe ang operation niya. Minimum?

Thanks !!

akyatbundok · « **Reply #422 on:** Feb 23, 2004 at 12:10 PM »

Quote from: BGA VI on Feb 22, 2004 at 10:53 PM

Hi, sir akyat, may question lang ako, ilang watts na transformer ba ang kailangan para sa mga surplus amps, para safe ang operation niya. Minimum?
Thanks !!

has to be more than the power consumption printed at the back of the amp (with some allowance)... i use a 1000w transformer coz i also connect my surplus TV to it... but i think 500w would suffice if the amp consumes only 200w - 300w.

when using a transformer, i prefer to use 100V rather than 110V... you'll never know how high a voltage spike could go... better if you use an AVR.

akyatbundok · « **Reply #423 on:** Feb 23, 2004 at 12:29 PM »

pareng nels76, mukhang matinding stress test yan ha... the 333ES is rated 105w/ch at 8ohms and 140w/ch at 4ohms... i can only imagine the stress that your mighty ms-912's are undergoing at the point of clipping.

with a VU meter in the amp, i can see that 95% of the time the power output is only between 0.3W to 10W, spending most of the time at less than 2W when playing vocals... but during dynamic peaks, and especially when using the #6 drum track, i can easily reach 130w/ch and above.

av_phile1 · « **Reply #424 on:** Feb 23, 2004 at 05:27 PM »

Quote from: akyatbundok on Feb 23, 2004 at 12:10 PM

when using a transformer, i prefer to use 100V rather than 110V... you'll never know how high a voltage spike could go... better if you use an AVR.

You preferred correctly, jap appliances are rated at 100VAC not 110. The latter would overdrive them.

BGA VI · « **Reply #425 on:** Feb 23, 2004 at 11:06 PM »

Sir akyat thanks for the quick reply !!!

akyatbundok · « **Reply #426 on:** Mar 02, 2004 at 03:10 PM »

in my last trip to the pier, these 2 heavy duty amps got me interested... but last i checked, the sansui was already sold... both are around 105wpc, late 80's models.

onkyo integra A-701D - asking P5,500 (built-in DAC, coaxial/optical inputs)

sansui au-alpha607L extra - asking P5,800 (power amp direct inputs)

av_phile1 · « **Reply #427 on:** Mar 02, 2004 at 03:23 PM »

Very tempting to get. Especially if those at the pier looked exactly like those in pictures. Last I was there, I saw plenty of sansui au-d7 something amps but their conditions on the face plates won't make you wanna buy them.

akyatbundok · « **Reply #428 on:** Mar 02, 2004 at 03:28 PM »

yeah those "D" models are just accumulating, not very good according to some sansui fan sites... those are the models that gave sansui a bad rep, they tried to redeem themselves thru the "alpha" models but the damage has been done.

BGA VI · « **Reply #429 on:** Mar 02, 2004 at 10:14 PM »

Hi , i just bought my first surplus amp, i got the
Denon PMA-780D, meron bang iba pang nakabili nito ? any feedback? for me the denon sounds way better on audio than my yamaha rxv-630. mas buo ang tunog and the highs are very clear,i'm using Wharfs 8.3. medyo mahal lang bili ko, 5.2k. sa cubao ko nabili, meron pa dun isa onkyo integra A-701d, asking is 6k. kunin ko sana yun kya lang when we tried it sa optical wala labas na sound, so i settled for the denon, no regrets naman.

akyatbundok · « **Reply #430 on:** Mar 03, 2004 at 11:48 AM »

congrats bro, i also heard that one driving 2 mini-ref size speakers.

same observation -- powerful bass & clear highs.

nels76 · « **Reply #431 on:** Mar 03, 2004 at 01:02 PM »

James lend me his Denon DCD 800 last night.

Now I have the pleasure of connecting it to Roger's Sony ES and my MS 912 for evaluation.

This morning I was already impressed with the sound improvement of this DENON when connected to my Kenwood 9060D and 902.

Will post my review soon on:

DENON - SONY - MS Combo.

Denon and Sony are both surplus equipment.

Problem witht he DENON though is that it does not have a good "grip" on the CD while being played.

BGA VI · « **Reply #432 on:** Mar 03, 2004 at 10:14 PM »

hi, just went to the pier today, Latest Sighting : Alpine/Luxman LV-105 hybid amplifier yung may 2 tube sa front. 5.5 k asking. almost bought the luxman dahil sa reviews ni Sir Akyat, but i saw another amp, a Harman Kardon HK 6100 any feedback on this amp it's quite small compared to the other amps but when we tested the sound was quite amazing to my ears. the store wanted 5.5 k for the HK6100 mura ba to or mahal. ? Sir Akyat any views on this amp ? Baka gusto niyo pa kunin yung luxman. nahawa na yata ako. ;DThanks !!

$:-\$

akyatbundok · « **Reply #433 on:** Mar 04, 2004 at 11:47 AM »

nakupo, labanan mo ang sakit na yan hehehe

thanks for the tip bro, baka bukas wala na pareho yan hehehe joke joke, after the accuphase i swore that it will be the last solid state amp i will buy in the next 12 months, tube naman this time.

dalawang luxman na nasira ko, papaayos ko yung isa with original parts, tapos yung isa gagawin kong frankenstein amp, either gainclone or super leach circuit sa power section while retaining the tube in the preamp section... yung luxman hindi kasing taba ang bass compared sa denon mo, pero gusto ko yun dahil medyo overpowering ang bass ng speaker ko minsan kaya sa luxman mas tight & tuneful ang bass... weakness nga lang niya is medyo bright & confused pag malakas na volume.

BGA VI · « **Reply #434 on:** Mar 04, 2004 at 12:46 PM »

sir akyat baka may comments kayo dun sa hk 6100, or mga links pa post naman wala kasi ako mahanap,

btw binili ko na kanina yung hk 6100

. ganda ng tunog sa wharfs ko. very detailed yung tunog, yung highs di masakit parang malambot, bass is also good malamig ang dating sa akin, very satisfied with this amp, parang mas gusto ko ito kesa yung denon pma-780d.

akyatbundok · « **Reply #435 on:** Mar 04, 2004 at 01:28 PM »

does it look like this?

HK6800... i suppose it may be close relative.

120W/ch (4/8ohms 20-20,000Hz)
15.5kg

power output ratings by HK are usually underspecified so expect better performance than similar spec amps from other jap brands.

H a n $ · « **Reply #436 on:** Mar 04, 2004 at 02:21 PM »

BGA VI,

Pre ganda yan HK mo and Akyat is right underated yun watts pero di naman underated ang performance

BGA VI · « **Reply #437 on:** Mar 04, 2004 at 11:11 PM »

hi sir akyat, medyo hawig dyan pero mas slim yung hk 6100.here' a link galing sa HK website. wala pics. http://www.harmankardon.com/specifications.asp?cat=&ser=&prod=HK6100BLK&sType=H

sir hans, ok naman yung amp tama ka nga understated yung specs pero sa tunog ok na ok. !

kunan ko ng pics, pero di ko marunong mag post.

akyatbundok · « **Reply #438 on:** Mar 05, 2004 at 12:48 PM »

underrated nga sabi 30wpc "lang" pero kita mo power consumption 242VA ganyan talaga HK good find bro.

BGA VI · « **Reply #439 on:** Mar 05, 2004 at 12:55 PM »

sir akyat, ok,swerte pala punta ko nung isang araw. punta ako ulit today, hanap ako speakers. may bago daw dating today. baka gusto mo sama ? thanks !!

kid · « **Reply #440 on:** Mar 13, 2004 at 07:13 PM »

mga tsong,

kung meron akong 150W RMS na speaker, ano ba dapat ang wattage ng amp na match sa speakers ko based don sa mga binebenta sa pier? ano ba ang ibig sabihin ng mga wattage na naka display sa mga amp don sa pier, is it the power output or the power consumption?

qguy · « **Reply #441 on:** Mar 15, 2004 at 01:24 PM »

power consumption ...

"guestimate" is divided by 3.5 to get RMS per channel

so if the spec at the back says 180 watts more or less its 60 W/ch...then again...this is guestimate ...

Quote from: punk_kid on Mar 13, 2004 at 07:13 PM

mga tsong,

kung meron akong 150W RMS na speaker, ano ba dapat ang wattage ng amp na match sa speakers ko based don sa mga binebenta sa pier? ano ba ang ibig sabihin ng mga wattage na naka display sa mga amp don sa pier, is it the power output or the power consumption?

arthurallanj · « **Reply #442 on:** Mar 15, 2004 at 01:45 PM »

Quote from: punk_kid on Mar 13, 2004 at 07:13 PM

mga tsong,

kung meron akong 150W RMS na speaker, ano ba dapat ang wattage ng amp na match sa speakers ko based don sa mga binebenta sa pier? ano ba ang ibig sabihin ng mga wattage na naka display sa mga amp don sa pier, is it the power output or the power consumption?

I've recently learned that your amps should have 20% more power than the rated RMS of your speakers. Yung wattage at the back of the amps are usually the power consumption. USUALLY ha? not always. Yung rating kasi at the back of the amps are usually impedance lang. TC.

arthurallanj · « **Reply #443 on:** Mar 15, 2004 at 01:54 PM »

Quote from: qguy on Mar 15, 2004 at 01:24 PM

power consumption ...

"guestimate" is divided by 3.5 to get RMS per channel

so if the spec at the back says 180 watts more or less its 60 W/ch...then again...this is guestimate ...

I'm not saying you're wrong bro, ha? Kasi I had a technician friend that even said you just divide the power consumption by 2 and that's it. But amplifiers have efficiency ratings din e, so amps that have higher efficiency ratings convert the power consumption to actual amplification power more efficiently and therefore have higher power to drive speakers. Mahirap kasi malaman ang power output ng amp pag walang manual e. And manufacturers will never give out efficiency ratings ng amps nila. So pag surplus, all you can do is audition.

qguy · « **Reply #444 on:** Mar 15, 2004 at 05:21 PM »

arthur..

no problem....

like i said its ....guestimate....and was never meant to be accurate...but I use 3 to 3.5 more or less to give me an idea...when there is no other information to go on....

but it would be best to search the net ...most oldish pioneers/sansui/marantz would be listed on the net somewhere with the WATTS / Channel informations

LOD/TRIO-Kenwood /Hitachi brands may be harder to find...

kid · « **Reply #445 on:** Mar 16, 2004 at 09:59 AM »

salamat sa mga inputs nyo bros.

BGA VI · « **Reply #446 on:** Mar 17, 2004 at 08:53 AM »

Hi, i recently bought a pair of surplus speakers. Onkyo Liverpool D-200II, carbon fiber yung cone, may konting scratches sa body but overall good condition and ganda ng tunog. very clear ang highs, ok naman din ang bass, try ko sa surplus ko na hk6100, di maganda, pero nung kinabit ko sa suplus na denon pma 780d, ok na siya, i guess kailangan ng malakas na amp, 150 watts ang rating ng speaker. bookshelf lang ang size. parang rosewood yata color . Sir akyat any links to this speaker Thanks

BGA VI · « **Reply #447 on:** Mar 17, 2004 at 09:16 AM »

try ko mag post ng pics. hope it works !

BGA VI · « **Reply #448 on:** Mar 17, 2004 at 09:26 AM »

try ko ulit

BGA VI · « **Reply #449 on:** Mar 17, 2004 at 09:29 AM »

here's a link http://page4.auctions.yahoo.co.jp/jp/auction/d35084267