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Post by john1977 on Mar 11, 2005 18:28:21 GMT 7
this is a nice amp, if you're adventurous, change the ps caps to a higher value and if you want use sla batteries (can be bought at home depot)
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Post by Handyman on Mar 13, 2005 12:23:27 GMT 7
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Post by Timn8ter on Mar 13, 2005 13:01:33 GMT 7
Very nice! Where did the battery come from?
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Post by Handyman on Mar 13, 2005 20:17:16 GMT 7
Very nice! Where did the battery come from? Thanks Tim, i owe you one ..it's a sealed lead acid batt i bought in a local mall.
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Post by Superman on Mar 13, 2005 20:45:38 GMT 7
Sonic Impact in beech, acrylic and audience narinig ko to kahapon, HANEP! ;D
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Post by iceman90a on Apr 26, 2005 10:13:31 GMT 7
meron na ako! ;D we tried it playing "Tutti" on MA S2 spkrs - hmmm kaya, di ka malalaglag sa silya pag palo ng orchestra, pero hindi din bitin considering na CAT wires lang ginamit na spkr wire, at 8 x AA batteries, nakaka tuwa bakit ganun tumunog dalhin ko next session
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narayan
Audionut
I am a peaceful soul
Posts: 234
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Post by narayan on Apr 27, 2005 12:53:17 GMT 7
was there too and really amazed that a small and inexpensive amp can sound very good we even compared it to another set of amp on demo(i wont mention the make and model) and to my ears, significantly better ung t amp considering both were out-of-the-box units. my guess is it will greatly benefit when paired with a set of high sensitivity speakers...nakaka-aliw talaga
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Post by Superman on Apr 27, 2005 14:50:28 GMT 7
meron na ako! ;D we tried it playing "Tutti" on MA S2 spkrs - hmmm kaya, di ka malalaglag sa silya pag palo ng orchestra, pero hindi din bitin considering na CAT wires lang ginamit na spkr wire, at 8 x AA batteries, nakaka tuwa bakit ganun tumunog dalhin ko next session bro, pwedeng mahiram, audition ko lang sa bahay? pero sa 2nd week of may na?
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Post by iceman90a on Apr 27, 2005 15:28:48 GMT 7
Sure - swap tayo ng 6550 mo
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Post by Superman on Apr 27, 2005 17:47:30 GMT 7
Sure - swap tayo ng 6550 mo yung 845 na lang muna ;D ;D ;D
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Post by bayonic on Apr 27, 2005 17:56:43 GMT 7
some questions regarding this amp :
1. how long will 8 AA batteries last with continous operation ?
2. what is the correct polarity for the AC adaptor for those who have tried one already ? ( positive ba sa gitna ? )
thanks
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Post by iceman90a on Apr 28, 2005 7:48:28 GMT 7
1. i think the 6 moons review states 8 to 10 hours...
2. havent tried it yet, come to think of it - i dont think there's a manual in the box...
OT - congratulations on your baby boy ;D
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Post by sandawa on May 17, 2005 7:13:44 GMT 7
Monster Vintage Amps for Sale! no not really, i'm just joking. after about a year of hesitation, the Davao kids (-once) finally got their Sonic Impact toys. medyo kulelat, but our units were significantly cheaper and waiting time was just a week. ganun ka-efficient si Diego (with his connections).
on its first 12 hours, Sonic T was subjected to experimentation: connected to 5 pairs of speakers, hooked to four CDPs, and fed with signals from three preamps, including Tono, to have an idea how it performs under varous combinations. tried it on EV, JBL, Technics, Design Acoustics and finally the metal-cone Hitachi HS-50 (takot ako ikabit sa Epos or KEF, baka lusawin ang tweeeter wire.) all 5 with over 90dB SPLs, the hands down best result was on Hitachi's 92dB floorstanders (3-way with 12 inch woofer). the balance is good, bass comes out clean and strong, and room-filling sound could be had at 10 0'clock on the volume knob. i bet this amp could shout louder on a Cerwin Vega or a Klipsch, but no luck yet on my incoming Cerwins.
i've also tested it against Sansui AU-X11 monster amp, TOTL in early '80s, with my wife and two kids as respondents to confirm an earlier observation. using fixed and variable outputs from one CDP and the same sets of speakers (EV Interface A and Technics SB-5300), the verdict was unanimous: Sansui was a clear winner in sonic clarity and transparency - from mid to high. i would not dare comment on its ability to reproduce real lows considering its limited power. i rank the AU-X11 by the way as the 2nd best sounding in my 5 active systems, next to Sansui Alpha 907.
i did ask separately my wife and kids pretending i was comparing the Accuphase and the Sansui, didn't show them the Sonic T which I hid on a dark corner beside the Accuphase. i also had the volume set on Sonic T's best reponse, normal listening level, to mask its weakness - insufficient power. everyone said the AU-X11 was the better amp compared with the more expensive champagne-colored Accuphase. all three were amazed, however, when they learned the other amp was a plastic toy and after realizing it was harmless and almost paperweight my son said: "Daddy, puwedeng ikabit yan sa banyo para hindi na kumanta si Mommy habang naliligo." oops, "teka magkano yan?" my wife asked with her dagger look. she didn't know i got 2 units - to reduce the possibility of getting an "aberration" on the production line.
anyway, i know Sonic T needs a burn-in period of up to 50 hrs but still, i don't think it could match the best of the traditional vintage amps even when compared at its best rated power. right now, it's hooked to my full-DC Luxman Laboratory Reference preamp and was rewarded with its own cohorts, the 6th active system in my collection - the 4th in my room. thru the preamp, it now has 2 record decks, 2 CDPs and a Nak 482Z. i'll probably write again my observations on this toy after two weeks, i.e., if there's a perceptible sonic change after the burn in period.
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Post by Superman on May 17, 2005 7:45:59 GMT 7
congrats sandawa and diego!...hey, i'll be back june last week 'til july 1st week...hope to listen to your new toys...any new finds?
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Post by hans adriane on May 17, 2005 10:33:00 GMT 7
Monster Vintage Amps for Sale! no not really, i'm just joking. after about a year of hesitation, the Davao kids (-once) finally got their Sonic Impact toys. medyo kulelat, but our units were significantly cheaper and waiting time was just a week. ganun ka-efficient si Diego (with his connections). on its first 12 hours, Sonic T was subjected to experimentation: connected to 5 pairs of speakers, hooked to four CDPs, and fed with signals from three preamps, including Tono, to have an idea how it performs under varous combinations. tried it on EV, JBL, Technics, Design Acoustics and finally the metal-cone Hitachi HS-50 (takot ako ikabit sa Epos or KEF, baka lusawin ang tweeeter wire.) all 5 with over 90dB SPLs, the hands down best result was on Hitachi's 92dB floorstanders (3-way with 12 inch woofer). the balance is good, bass comes out clean and strong, and room-filling sound could be had at 10 0'clock on the volume knob. i bet this amp could shout louder on a Cerwin Vega or a Klipsch, but no luck yet on my incoming Cerwins. i've also tested it against Sansui AU-X11 monster amp, TOTL in early '80s, with my wife and two kids as respondents to confirm an earlier observation. using fixed and variable outputs from one CDP and the same sets of speakers (EV Interface A and Technics SB-5300), the verdict was unanimous: Sansui was a clear winner in sonic clarity and transparency - from mid to high. i would not dare comment on its ability to reproduce real lows considering its limited power. i rank the AU-X11 by the way as the 2nd best sounding in my 5 active systems, next to Sansui Alpha 907. i did ask separately my wife and kids pretending i was comparing the Accuphase and the Sansui, didn't show them the Sonic T which I hid on a dark corner beside the Accuphase. i also had the volume set on Sonic T's best reponse, normal listening level, to mask its weakness - insufficient power. everyone said the AU-X11 was the better amp compared with the more expensive champagne-colored Accuphase. all three were amazed, however, when they learned the other amp was a plastic toy and after realizing it was harmless and almost paperweight my son said: "Daddy, puwedeng ikabit yan sa banyo para hindi na kumanta si Mommy habang naliligo." oops, "teka magkano yan?" my wife asked with her dagger look. she didn't know i got 2 units - to reduce the possibility of getting an "aberration" on the production line. anyway, i know Sonic T needs a burn-in period of up to 50 hrs but still, i don't think it could match the best of the traditional vintage amps even when compared at its best rated power. right now, it's hooked to my full-DC Luxman Laboratory Reference preamp and was rewarded with its own cohorts, the 6th active system in my collection - the 4th in my room. thru the preamp, it now has 2 record decks, 2 CDPs and a Nak 482Z. i'll probably write again my observations on this toy after two weeks, i.e., if there's a perceptible sonic change after the burn in period. Nice review sir sandawa.
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Post by sandawa on May 18, 2005 8:23:58 GMT 7
addendum. i have tried comparing the output of my two Sonic T units and found one a bit louder, could be up to 1 dB. that justifies my decision to order two units instead of one. of course, having two also means one could be modded and the other left stocked. i actually promised myself to give one to my Dad who was into this hobby (tubero converted to SS) when he was younger.
one of the questions Diego and I asked after we got our Sonic T units on Monday was the specs of AC/DC transformer to buy. the small manual was quiet on ampere rating as well as polarity. we made some tests and computations and found it's polarity normal - positive inside, negative outside. Diego had wanted to order the original converter at $20 but i discouraged him from doing that since it is rated at 120 volts and a similar converter could be bought here cheaper. he eventually bought a 1.5-ampere unit (roughly P700) which we felt is good enough based on AudioKarma members' posts where transformers as low as 800 milliamperes were used without resulting in damage.
in my case i'm determined to use my 12-volt 12-ampere battery charger units, i got two, which i use for recharging car battery, airbed inflator and for the car vacuum cleaner whenever i use it on my sofa. thus, one Sonic T is now connected to a battery charger and another unit working on 8 AA batteries (ang mahal, over P200 for all).
determining the amperage required for Sonic T is basic. since we're using less than 20 watts total under normal use, 1.5 amperes would be enough. if we abuse the unit (in that case risk tweeter meltdowns) and pump up the volume at 30 watts total, you'll need a 2.5-ampere converter. that estimation, of course, is from the basic equation that says voltage multiplied by ampere equals output in watts.
also if you're buying a power supply, i think it would be better to have the regulated type, 3-ampere costing P600 to P1,200. i would yield to JojoD, however, if he has another suggestion. better to use the ones that have banana plug capable terminals. good quality adaptor connector fit for Sonic T's power terminal with 1.5-meter wire (banana plugs would be connected to the other end) is available from hardwares at P20 or less.
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Post by maitani on May 20, 2005 12:56:35 GMT 7
some questions regarding this amp : 1. how long will 8 AA batteries last with continous operation ? 2. what is the correct polarity for the AC adaptor for those who have tried one already ? ( positive ba sa gitna ? ) thanks 1. Using 8 new Energizers, the amp should last for more than 15 hours using reasonable volume levels. 2. Correct polarity is center-positive.
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Post by hans adriane on May 20, 2005 13:46:12 GMT 7
1. Using 8 new Energizers, the amp should last for more than 15 hours using reasonable volume levels. 2. Correct polarity is center-positive. Try using rechargable battery i'm sure you get better mileage..
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Post by john1977 on May 20, 2005 20:24:15 GMT 7
for those using sla batteries with their t-amps, try adding some caps in parallel with the battery for improved dynamics
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Post by maitani on May 21, 2005 13:49:37 GMT 7
Try using rechargable battery i'm sure you get better mileage.. No you won't. Energizers are 1.5 volts each while nickel-metal hydride batteries are at 1.2 volts only. 8 batteries means 12V vs 9.6V. The T-Amp starts clipping/shuts down at about 9 volts.
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