Topic: Surplus amps

[ATJr.]

for quite some time, ive been using stac avr with my jap. surplus gears and had no problems.

then stay as it is....

[oweidah]

then stay as it is....

.
thanks sir tonyt. im doing just that.

bonvoyage sa muling pag-alis mo!

[oweidah]

@sir sandawa,

fullcircle na ako! just acquired a LUXMAN R3045 receiver 45wpc 220v. eto first choice ko bilhin sa goldcrest noong naguumpisa ako sa hobby, pero nag harmankardon receiver na lang kinapos sa budget. ang ganda ng analog tuner! just heard dzfe.fm signoff lupanghinirang!  . medyo madumi lang mga knobs, konting spray ng contact cleaner ayos na 'to!

image copied from the net.; actual pic later na >

[sandawa]

Yun nga eh! Pag bumalik ka dun sa lumang equipment mo, malaki ang tsansa na mas maganda pala kaysa sa mga mahal na bago. Mas maganda siguro i-post mo yung photos sa thread ni Southpeak on vintage hifi.

[oweidah]

Yun nga eh! Pag bumalik ka dun sa lumang equipment mo, malaki ang tsansa na mas maganda pala kaysa sa mga mahal na bago. Mas maganda siguro i-post mo yung photos sa thread ni Southpeak on vintage hifi.

korek ka jan!!! binitawan ko nad am/fm tuner at sansui au9500 eto naman ang napalit...senti value pa!

tsaka na post pics....sa totoo medyo old looking gusgusin pa, medyo naspu at spray contacts muna pero ang tunog primera klase!

[oweidah]

to vintage "bakalboys":

anybody heard or own this bulilit blackface pioneer sx770 receiver?
http://www.audiokarma.org/forums/showthread.php?t=113874
picture from the net:


its just 15wpc but when i heard it yesterday, anakng*&%$! it drove my b&w602s2 with ease and the sound- vintage malapad,fullbodied,lush tube-like! talo ang luxman r3045 ko! unfortunately the unit offered was really old,"gusgusin", tuner had problem with the dial tho fully functioning and, partida- installed was a a cheap china-powercap so i declined. kung marunong at matyaga lang ako mag-restore at magpalit ng cap (an elna 33000uf was included as replacement), baka di ko na pinalampas. so if any of you happen to see this or an sx780, dont be fooled with its light weight - 9kg and 15wpc power.

[sandawa]

Just to share a similar observation. Three of my amps are now in my wife's Las Pinas home: Musical Fidelity A-120 (40wpc of pure class A); A&R Cambridge (or Arcam) Alpha 6 (50wpc) and a Pioneer SA-710 (20wpc). The MF-A120 is of course a different breed, but between the 20-watt Pioneer SA-710 and the Arcam Alpha 6, the Pioneer SA-710 is significantly superior. And to think that the Arcam Alpha 6 is British high current design than puts out 100wpc @ 4 ohms.

The SA-710 (1973) also beats the Pioneer A-UK3 (1993) which is equivalent to the much hyped Pioneer A-400 (30wpc) designed by John Bamford, a British audio engineer working for Pioneer's UK subsidiary. My take on this is if the "legendary" Pioneer A-400 is really that good as UK publications reported in the early '90s, how come it failed to be appreciated by the hifi market outside UK? BTW, A-UK3's (A-400) typical resale price in the Japanese used market is only 6,000 yen. In comparison the SA-710, despite being 20 years older, is still quoted at 10,000 yen.

 

[Superman]

CONGRATS!

[oweidah]

Just to share a similar observation. Three of my amps are now in my wife's Las Pinas home: Musical Fidelity A-120 (40wpc of pure class A); A&R Cambridge (or Arcam) Alpha 6 (50wpc) and a Pioneer SA-710 (20wpc). The MF-A120 is of course a different breed, but between the 20-watt Pioneer SA-710 and the Arcam Alpha 6, the Pioneer SA-710 is significantly superior. And to think that the Arcam Alpha 6 is British high current design than puts out 100wpc @ 4 ohms.

The SA-710 (1973) also beats the Pioneer A-UK3 (1993) which is equivalent to the much hyped Pioneer A-400 (30wpc) designed by John Bamford, a British audio engineer working for Pioneer's UK subsidiary. My take on this is if the "legendary" Pioneer A-400 is really that good as UK publications reported in the early '90s, how come it failed to be appreciated by the hifi market outside UK? BTW, A-UK3's (A-400) typical resale price in the Japanese used market is only 6,000 yen. In comparison the SA-710, despite being 20 years older, is still quoted at 10,000 yen.

 

i also had the pioneer uk3 and it pales in comparison to the sx770. iba talaga ang 60s 70s vintage gears, many sounds tubey! sana maayos at "mapaliguan" yung sx770 at babalikan ko

[aHobbit]

so, sir ahobbit; for an ordinary user with no technical or engineering background, no tools and gadgets; may i ask whats the best to use with japanese surplus gears?

for quite some time, ive been using stac avr with my jap. surplus gears and had no problems.

tnx

so, sir ahobbit; for an ordinary user with no technical or engineering background, no tools and gadgets; may i ask whats the best to use with japanese surplus gears?

for quite some time, ive been using stac avr with my jap. surplus gears and had no problems.

tnx

I mentioned it na, and tony confirmed it ...

a decent avr with 100V output is a sure way of getting 100V no matter what's your wall outlet rating +/- of 220V range ... pag 220V lang output mo sa AVR, then get a transformer with 100V output and plug it into your AVR to ensure a steady 220V comes into your transformer and out a steady 100V

[oweidah]

I mentioned it na, and tony confirmed it ...

a decent avr with 100V output is a sure way of getting 100V no matter what's your wall outlet rating +/- of 220V range ... pag 220V lang output mo sa AVR, then get a transformer with 100V output and plug it into your AVR to ensure a steady 220V comes into your transformer and out a steady 100V

tnx!

@sandawa

sir! di ko tinantanan yung pioneer sx770 na gusgusin.
tama yung mga taga AK > http://www.audiokarma.org/forums/showthread.php?t=113874

ang ganda tumunog ni bulilit! ewan ko kung ano ang binudbod na betsin nung hapon na gumawa neto pero nakakamangha, 15wpc ang liit ng transformer, iisa ang power cap (china replacement pa, may elna cap ako dito pamalit). ok 220volts na ito at ang sorpresa - may preamp out na, may center channel out pa! kinabit ko sa subwoofer yung center channel gumana subwoofer hehehe

now the challenge- "paliguan" ang sx770! 

nga pala meron pang isa inooffer sakin pioneer tube receiver using 6bm8 power tubes, di ko makita info sa net nung model s45x yata nakatatak sa likod....abangan!

[dana]

Pogi ng mukha ng Sx770  Mr Ojofool!
Encountered that model many times before...hmmmm
Sked naten, tulungan kita paliguan yan.
 

[ATJr.]

anybody heard or own this bulilit blackface pioneer sx770 receiver?

this is the first commercial amp that i cloned in 1976.....the power amp section that is....those days, the pcb lay-out was given on the brochures, that is why it was very easy to copy it.....nice amp, i have done scaled up versions using to-3's, 2n3055's at rails of about 50volts from the original rail of 35volts...

[oweidah]

this is the first commercial amp that i cloned in 1976.....the power amp section that is....those days, the pcb lay-out was given on the brochures, that is why it was very easy to copy it.....nice amp, i have done scaled up versions using to-3's, 2n3055's at rails of about 50volts from the original rail of 35volts...

nice to hear that sir tonyt. for the sx770 to merit your attention way back 76, it must be goood! fantastic sound from this "piece of junk" 

Pogi ng mukha ng Sx770  Mr Ojofool!
Encountered that model many times before...hmmmm
Sked naten, tulungan kita paliguan yan.
 

im sure madaming beses mo na naencounter ito. gusgusin maitim siguro accumulated dirt ala taong grasa pero hindi kalawang. 'ika nga -one mans junk is another mans treasure   bakasakaling matapos paliguan eh si maricar reyes pala (sa tv role nya dun k santino)  

btw walang original housing/cover pero ang maganda may improvised narra housing so ok na rin. importante yung tunog - amazing for its size and power rating...

[ATJr.]

you can replace the electrolytic caps in the power amp sectioon, it's been a long time, your amp can use new and fresh caps.....

those days, pcb lay-outs/parts lay-outs were included in the manual...it so i happened i got hold of one...

[oweidah]

you can replace the electrolytic caps in the power amp sectioon, it's been a long time, your amp can use new and fresh caps.....

those days, pcb lay-outs/parts lay-outs were included in the manual...it so i happened i got hold of one...

thanks! thats just what i had in mind. im just curious sir tonyt, theres only one "big" cap beside the smallish transformer in this amp. right now, a replacement chinese-made cap is in place tho i have a 2200uf/50v and 3300uf 50v elnas. the 2200uf fits the hole for the original cap...

can i have a copy of the manual? i'll pm you my email addr if you have time to have it scanned and sent. TIA

[oweidah]

this is the first commercial amp that i cloned in 1976.....the power amp section that is....those days, the pcb lay-out was given on the brochures, that is why it was very easy to copy it.....nice amp, i have done scaled up versions using to-3's, 2n3055's at rails of about 50volts from the original rail of 35volts...

if it was done before, im sure it can be done again! like movie remakes. the younger generation of audiophiles might want a taste of the "glory of the past" and compare it with present day amps. baka mabaligtad ang pananaw nila sa audio hobby! (like that guy in audiokarma.org link i posted)

quote from AK member doodz66 - I just got a mint condition SX 770 for $40 and it sounds incredible. I am hearing things on cd's that I have played forever for the first time. The soundstaging is awesome. I hooked it up to my system in place of my $1400 Linn Majik and now I am reevaluating what I think about audio. I love the classic stuff, but I can't believe that it makes me happier than the Linn. I wish someone could explain it..."

  

yes, the good ole days when the schematic diagram is included in the brochure/manual. eh ngayon yung iba di mailakip ang schematics; ewan kung nagttpid o baka naman delicate, baka magka.aberya?

mula nung na-clone ni "dolly" nauso na cloning !

[oweidah]

....and what really surprised me with the pioneer sx770 is the presence of pre-outs AND A MONO CENTER CHANNEL at the back panel. i used the center channel jack to drive my subwoofer. o anong say ng mga AVR? 19kopon-kopong may center channel na ang pioneer!

[ATJr.]

thanks! thats just what i had in mind. im just curious sir tonyt, theres only one "big" cap beside the smallish transformer in this amp. right now, a replacement chinese-made cap is in place tho i have a 2200uf/50v and 3300uf 50v elnas. the 2200uf fits the hole for the original cap...

can i have a copy of the manual? i'll pm you my email addr if you have time to have it scanned and sent. TIA

i do not have the manual now....anyways, that one big cap is the main filter cap, those days, there just single rails, that  is why only one main filter cap....then there are ouput capacitors, on the pcb....

[oweidah]

i do not have the manual now....anyways, that one big cap is the main filter cap, those days, there just single rails, that  is why only one main filter cap....then there are ouput capacitors, on the pcb....

ok thanks sir tonyt. in the future, at your convenience, pls do remember my humble request.

another lesson learned from the guru. ive always thought that there are two filter caps in amps hehehe

backpanel pic from the net>>> notice the preouts and center channel jack

[ATJr.]

i doubt that the to-66 ouput transistors are still available, but no to worry, there are lots of to-220 replacements out there if the need arises....

i cloned the phono preamp/tone control sections as well.....sold lots of them... is that a working unit btw?

[oweidah]

i doubt that the to-66 ouput transistors are still available, but no to worry, there are lots of to-220 replacements out there if the need arises....

i cloned the phono preamp/tone control sections as well.....sold lots of them... is that a working unit btw?

yup fully functioning! only the tuning dial is misaligned yet functioning well. its driving my ribbon planars and subwoofer now.

tnx for the info on parts.

gawin mo uli! (sama ako ng isang unit!
accdg to net info >
http://www.thevintageknob.org/PIONEER/SX770/SX770.html

from an ebay seller>
Pioneer SX-770
TRANSISTORS & DIODES
Tuner Section
ICs: 3
FET: 1
Transistors: 12
Diodes: 9
Audio Section:
Transistors: 21
Diodes and etc. 7
FM SECTION
Circuitry:
Front-end using "FET"
Frequency Range: 87.5-108 MHz
IHF Usable Sensitivity: 1.8 uV
Image Rejection: 60 dB (at 98 MHz)
Signal to Noise Ratio: 70 dB (IHF rating)
Antenna Input: 300 ohms (balanced)
MULTIPLEX SECTION
Circuitry:
Time switching type de-modulator
FM Mono/Stereo automatic selection
Channel Separation: 40 dB (at 1 kHz)
AM SECTION
Circuitry: Superheterodyne
Frequency Range: 525-1605 kHz
IHF Usable Sensitivity: 10 uV
Image Rejection: 55 dB (at 1000 kHz)
Antenna Input: Built-in Ferrite loopstick antenna
AUDIO SECTION
Circuitry: Single-ended push-pull
Music Power Output (IHF Rating):
70 watts at 4 ohms
52 watts at 8 ohms
RMS Rated Power Output (both channel driven):
17 + 17 watts 4 ohms
15 + 15 watts 8 ohms
RMS Rated Power Output (each channel driven): 20/20 watts 8 ohms
Frequency Response: +/-3 dB from 20 Hz to 40 kHz (Over-all)
Harmonic Distortion: Less than 0.8% (at 1 kHz rated output)
Power Bandwidth: 15 Hz to 35 kHz (AUX)
Hum & Noise (at rated output):
MAG better than 80 dB
AUX better than 95 dB
Inputs Impendance and Audio Sensitivity (for rated output):
MAGnetic PHONO 2.5 mV 50 kOhms (1 kHz)
CERamic PHONO 58 mV 100 kOhms (1 kHz)
MICrophone mV 100 kOhms (1 kHz)
TAPE MONITOR <200 mV 100 kOhms (1 kHz)
AUXiliary 200 mV 100 kOhms (1 kHz)
Damping Factor: 35 (8 ohms, 1 kHz)
Output Terminals and Jacks:
Speakers 4 to 16 ohms
Stereo headphones jack
Simultaneous tape recording jacks, equipped with TAPE MONITOR switch
Tape recording/playback jack (DIN type)
Equalization Curves:
PHONO: RIAA
Tone Controls (each channel):
BASS boost 13 dB, cut 9 dB (at 50 Hz)
TREBLE boost 10 dB, cut 9 dB (at 10 kHz)
Filters:
HIGH - cut 9 db (at 10 kHz)
Loudness Contour: Switchable ON-OFF, boost 12 dB at 50 Hz, boost 7.5 dB at 10 kHz, with VOLUME control set at 40 dB

[sandawa]

It looks similar to this Japanese-version receiver: http://www.audio-heritage.jp/PIONEER-EXCLUSIVE/amp/sx-65.html

[oweidah]

It looks similar to this Japanese-version receiver: http://www.audio-heritage.jp/PIONEER-EXCLUSIVE/amp/sx-65.html

yup that looks identical.

btw i may have access to a jap yamaha ca-r1 int.amp. limited edition daw ito akin to the ca1000 c1010 ?

i do not have the manual now....anyways, that one big cap is the main filter cap, those days, there just single rails, that  is why only one main filter cap....then there are ouput capacitors, on the pcb....

accdg to one site info ---> quasi complementary SEPP-OTL circuit (single ended push pull)

[sandawa]

yup that looks identical.

btw i may have access to a jap yamaha ca-r1 int.amp. limited edition daw ito akin to the ca1000 c1010 ?

I don't know how accurate that info is, but if you look at the time-series data from Yahoo Japan, a CA-1000 series amp sells at an average of 15,000 yen. In comparison, the CA-R1 (limited edition?) comes out at only 7,000 yen.

[oweidah]

I don't know how accurate that info is, but if you look at the time-series data from Yahoo Japan, a CA-1000 series amp sells at an average of 15,000 yen. In comparison, the CA-R1 (limited edition?) comes out at only 7,000 yen.

pls check this out : http://translate.google.com/translate?hl=en&sl=ja&u=http://www.hifido.co.jp/KW/G0101/J/0-50/C00-00009-75959-00/&ei=TxpZSs6wG4vW6gP3yoSWCw&sa=X&oi=translate&resnum=1&ct=result&prev=/search%3Fq%3Dyamaha%2Bca-r1%26hl%3Den%26client%3Dopera%26rls%3Den%26hs%3DQKR%26sa%3DN%26start%3D100

Genre: PURIMEINANPU
CA-R1

Manufacturer: YAMAHA

   Store: Date :2002-07-stock Osu headquarters 02 11:07
Sale date :2003-01-02
Price: 69,800 yen
Sales price (including tax): 2,000 yen

[sandawa]

That confirms. Prices of CA-1000 series amps are from 100,000 yen to 120,000 yen.

[oweidah]

That confirms. Prices of CA-1000 series amps are from 100,000 yen to 120,000 yen.

yup ca-r1 is here. as shown in link and image i posted at the previous page. and yes its makinis and sariwa as claimed

im awaiting pioneer s45x (yes s45x daw nakatatak) tube receiver. it uses 6bm8 tubes compactron? daw. cant find info on the net.
owner is the same guy who posted before the pioneer sa810 

[southpeak]

yup that looks identical.

btw i may have access to a jap yamaha ca-r1 int.amp. limited edition daw ito akin to the ca1000 c1010 ?

accdg to one site info ---> quasi complementary SEPP-OTL circuit (single ended push pull)

looks more identical to CA-2000
http://www.audio-heritage.jp/YAMAHA/amp/ca-2000.html


CA-R1


cangratulation sir.. review naman 

[oweidah]

looks more identical to CA-2000
http://www.audio-heritage.jp/YAMAHA/amp/ca-2000.html


CA-R1


cangratulation sir.. review naman 

not quite the same sir. the ca-r1 doesnt have classA operation and it might not even be "vintage" yet if the ff: translation is accurate. the speaker terminals are pushbutton type not the typical screwtype thats common to many vintage stuff.

i havent listened to it hooked up with cdp. i used the pioneer sx770 as tuner for easy listening last night. malambing not too fullbodied/lush; good details and soundstage.
-----------------------------------------------------------------------

from the net>>> (transalated)

CA-R1

Manufacturer: YAMAHA

   Store: Date :2002-07-stock Osu headquarters 02 11:07
Sale date :2003-01-02
Price: 69,800 yen
Sales price (including tax): 2,000 yen

" Where the power do not sound. Effective Output: 70W +70 W (1kHz, 0.02% THD) SN Ratio: 115dB Frequency response: 10 ~ 100kHZ 1997 release is a product delivery status."


***

edit /add:
  yehey 
yes it seems to be vintage yamaha! as per Axel's post at AK >>>
http://www.audiokarma.org/forums/showthread.php?t=39214
CA-V1 is from c. '78/79, part of "lower" lineups and (seemingly) not distributed much ; CA-T1 is the tuner that goes with it.

Yam' at that time had some fairly similar lineups which still are little mysteries to me and rarities anyway:
CA-V1,
CA-X1,
CA-S1,
CA-R1,
CA-G1...
...all integrated amps with often a dedicated tuner alongside (seemingly), and the "R" and "X" units being (seemingly) nearer the regular units (CA-2000 etc)... Currently hunting some lit' on all of these but no luck so far...