ALBUM VINTAGE

[IR Babuin]

La rugamintea mai multor pasionati, aici este un link spre un album vintage - mai am multe componente nepozate, dar cu timpul o sa adaug si o sa pun aici update-ul

http://www.imagestation.com/album/?id=2128975901

[Mitica]

[usernamex]

Mersi frumos pentru efort!

[luleashca]

felicitari....imcredibil....nene, sincere felicitari. m-ai lasat cu gura cascata! sincer.

[IR Babuin]

...apare pe undeva si un selector sau 2 ... !!!!!!! cu selectorul , in aceeasi serie am si mini sistem - cass deck, preamp, amp, tuner, reverb procesor

[luleashca]

cele de sub semineu, le folositi la foc? au pacatuit si le ardeti? pot sa va dau un F31 in schimbul gratierii lui F71 care-si asteapta rindul la sacrificare???

[IR Babuin]

pai am si f31, si 51, si 71, si 91 - - le tin, nu le pun pe foc inca - la semineu era poza asa de revista, inca mai gasim lemne si gaz ...

[gigiduru]

faine scule...

[momolo]

pe mine m-au ametit si as pune 100 de intrebari!

De exemplu cum suna acel deck Marantz auriu? Sau care dintre casuri deck suna mai bine si pe care il preferi la redare?

Impresionanta colectie insa dupa opinia mea "bomboana" este acea garnitura de NAKAMICHI dragon seria speciala! Nu am idee si nici o sansa sa-l aud cum merge insa arata criminal!

[momolo]

Nici un raspuns la intrebarea de mai sus.....

..Dar mai am o intrebare, defapt o nelamurire. Am cautat rapid pe net si nu prea m-am dumirit, putina documentatie. Intrebarea este - deckurile AKAI GX 75 si GX F75 sunt defapt acelasi lucru sau chestii diferite?! Sau nu exista "GX F75" ?!

A!, si inca una, am gasit la cineva un AKAI GX 75 (nu l-am vazut inca dar mi s-a spus ca e impecabil...cica!) culoare negru. Cere pe el 200 euro. Vi se pare mult? Cam cat ar merita, cat ar fi un pret onest de piata in caz ca deckul este in stare buna?

Si inca una - cat merita un AKAI GX F91 auriu in stare buna? de exemplu, 400 euro ar fi mult?

[IR Babuin]

Toate deckurile din colectie suna impecabil pe caseta trasa de AKAI GX-F91 - cel modificat - la inregistrare sint diferente intre ele !

Deckurile AKAI seriile 75/95

- seria pre 82 - - - - AKAI GX-F95 - un tanc, design excelent, sunet impecabil

- seria post 86 - - - - AKAI GX 75, GX 95 - - - - -numai negre, capete discrete, lemn lacuit pe margini, mi se par mai subtirele decit F95 la design, la performante nitel mai bune, in special GX 75/95 MKII

-Un deck GX-F91 - - - - de la 400 $ in sus, pe mine m-a costat unul din ele,in final, dupa modificari - - - ~ $ 1100

Prezint aici modificarile

AKAI GX-F91


**** INTRODUCTION
The Akai GX-F91 high end audiophile cassette deck is truly one of the world's most uniquely styled and highest performance cassette deck. The GX-F91 represents one of Akai's most unique landmark cassette deck achievements at the height of the Compact Cassette medium. Its list of standard features is truly plentiful and rich, and this unit was built in the era where Compact Cassette was at the peak of its demand and significant research and development was expended to yield technical performance of the highest standards possible with this medium. Making this particular unit even more one of a kind are special
modifications to this particular GX-F91 cassette deck that further increases its performance potential and flexibility beyond that of original specifications.


**** FEATURES (Stock unit features)

Transport and head block module
* Full logic dual-microcomputer controlled 3-motor advanced transport
* Quartz-locked direct drive capstan motor
* Closed loop dual capstan drive
* Separate reel drive motor for high speed tape spooling
* Motorized transport mode switching and head block operation
* Optical take-up reel motion sensing
* 3 head system
* Wear-free GX record and playback heads - 150,000 hour head life, or 24 hour
use for 17.5 years
* Ferrite dual gap erase head
* Wide shoe tape guides
* Back illuminated cassette well allows easy viewing of tape position
* Power cassette door loading and eject - insert tape without closing cassette
door and press a transport button to close door followed by auto tape slack tape
up and execution of selected transport mode

---------------------

Tape handling / auto tuning system / signal processing
* Auto tape selector via Compact Cassette ID notches
* Auto microcomputer tape tuning system - 6-bit, 64-step test and tuning increments
* Individual channel recording equalization and recording level (tape
sensitivity) tuning
* Tape tuning recording bias manual offset adjustment to yield flat response
with a wide range of bias offsets for maximum high frequency saturation level
manually tailored / adjusted to suite program material recorded - a feature
unique to Akai's tape tuning algorithm never before implemented by other
cassette deck manufacturer's auto tape tuning schemes.
* 3 standard reference settings for types I, II and IV for instant recording
(See Reference Tape Calibrations section below)
* Fifteen (15) non-volatile user tape tuning data storage memories - 4 permanent
memory stores and 1 buffer memory for each of three tape types
* Full tape tuning data memory management functions - write, recall, erase
* Dolby B and C noise reduction system with defeatable MPX filter (for use with
FM stereo broadcast recordings), yielding up to 20 dB of weighted noise
reduction effect.
* High quality DC (Direct Coupled) recording and playback pre-amplifiers
* Stereo headphone jack
* Separate individual line output level control and headphone output level controls
* Akai exclusive auto monitor - deck signal monitor mode automatically switches
to source mode in record pause mode, and automatically switches to tape mode in
record mode. Manual override possible via electronic monitor touch button.
Monitor signal switching is fully electronic and non-mechanical, with no
potential for monitor switch contact wear or noise.

---------------------

Visual level monitoring
* Three mode meters - Peak modes I and II, and VU mode meter response
characteristics, all with peak hold function
* Wide level range meters, displaying from -30 dB to +8 dB (Peak I and VU modes)
and -20 dB to +15 dB (Peak II mode)
* High resolution 24-segment bar meters, at fine 1 dB steps between ranges of
-11 to +8 dB (Peak I and VU modes) and 0 to +15 dB (Peak II mode)
* D-COMP Dynamic Compensation meter mode - simulation (and display) of record
signal levels after signal processed through recording amplifier's record
equalization circuitry. This extremely rare feature has only extremely seldomly
been offered on any tape deck in history. Meter signal display of recording
levels inclusive of recording equalization emphasizes the dramatic increase in
high frequency levels of signals recorded to tape, and potentially assists in
improved record level setting of high frequency rich content.
* Recommended maximum record level range cursors on meter scale for each tape
type, illuminated depending on tape type inserted

---------------------

System automation logic
* IPLS Instant Program Locating System - for forward and backward blank search,
for track location
* Intro-scan - auto search to beginning of each program segment and playback for
10 seconds then auto search to next blank segment for intro-playback
* Memory stop (counter zero) and memory play modes (rewind to counter zero and
auto play), or rewind to beginning of tape and auto play.
* Record cancel function - instant re-cueing to beginning of recording start
point then auto record-mute for 4 seconds then auto-record-pause
* Auto record mute with 1 second timing indicator, followed by auto pause after
4 second mute
* Tape turns and quartz based real time electronic counter modes
* Remote control capable, with appropriate Akai wired or wireless remote control
units
* Timer start modes - play and record

---------------------

Product styling / design
* Slim line tape deck profile
* Stunningly minimalistic style with fully motorized large control panel door,
rotates to open and then retracts beneath deck - see item photo below for
separate digital images of this control panel in its closed and fully open position.
* Closed control panel door with large playback controls with indicators and
noise reduction mode indicators
* Cool soothing blue glow power switch translucent bar (See item photo)
* Large Dolby B and C noise reduction mode indicators on large panel door while
closed



**** FEATURES - SPECIAL MODIFICATIONS (Custom features unique only to this
particular unit)
The following section summarizes the unique custom modifications to this
particular unit of the Akai GX-F95 audiophile cassette deck, and their
performance benefits. For technical audiophiles that are seriously interested in
considering this unit for purchase and are interested in more details on these
modifications, please contact the seller directly for detailed information on
these modifications and why the applied modifications are (and have been) highly
reliable during the service life of this deck while fully meeting original
manufacturer's mechanical performance specifications. To the best of knowledge,
there exists no other unit of this model that have these modifications.

* Three speed operation - half speed (0.55 or 55%), standard (1.00 or 100%) and
high (1.35 or 135%) while fully under quartz locked servo control for all three
speeds, for exceptional recording performance and extended recording time. At
135% speed, a C-60 tape runs 45 minutes, a C-90 tape runs 60 minutes, and a
C-120 tape runs 90 minutes. Running at 135% normal speed, a 15 kHz waveform is
the same wavelength as approximately a 11 kHz signal at normal speed. As a
result, the demands on all tape types is signficantly reduced at high speed and
frequency response and maximum output level is increased accordingly by a
significant margin. At this speed this deck on its own is useful for 2-track
final mixdowns of high quality, and when paired with an outboard complementary
noise reduction unit (compander) can yield recordings with a level of clarity
and air that is difficult to obtain at standard cassette speed, yet without
rapidly consuming tape as would other rare double speed cassette decks that run
at 3.75 inches per second. At half speed mode running at 55% normal cassette
speed, the available recording time is nearly doubled, as recording time per
tape is increased by about 81% percent. This speed is especially useful for
recording programmes that run long and/or for non-critical fidelity program
recording. No other mass produced consumer cassette tape deck of any quality is
equipped with three speed operation under such a high quality dual capstan
direct capstan drive transport with full quartz locked speed servo at all speeds.

* Three discrete heads / 3rd generation, LC-OFC Super-GX heads - The original
single housing fixated combination 2nd generation Super-GX record and playback
head structure on the stock unit GX-F91 has been upgraded to a 3rd generation
Super-GX head structure with true discrete head independent suspension head
structure. As a result of this significant costly upgrade to true discrete
heads, separately adjustable recording and playback head alignment in height and
azimuth is realized for the most precise magnetic alignment between recording
and playback heads. The new 3rd generation Super-GX heads uses LC-OFC Linear
Crystal Oxygen Free Copper head core windings, yielding higher sonic purity from
its improved electrical conductive characteristics. To the best of knowledge,
this is the only known unit of the GX-F91 in existence with a true discrete
three-head configuration. The new 3rd generation discrete Super-GX head
components were ordered directly from Akai Electric in Tokyo, Japan and is of a
value of approximately US$350, *excluding* installation tech time and other
costs involved in this special key components upgrade. These very valueable and
costly head components are no longer available after the complete termination of
Akai Electric Co. insofar as the original Japanese company's operation is concerned.

* Ceramic tape guides - The original stock unit supply side capstan wide shoe
guide and take up side capstan wide tape guide have been replaced with Akai's
high end deck ceramic tape guides, of the same physical shape.

Other custom enhancements
* 3-position tape speed selector most seamlessly integrated into the front panel
through a special physical modification, resulting in a new front panel control
that is fully cosmetically / visually matched to this unit's original control
cosmetics.
* 67% (2/3 times) increased resolution tape turns counter mode - a C-120 tape
wound from end to end runs up to over 7700 on the 4-digit electronic counter,
compared to about 4600 on the stock GX-F91. The higher tape counter value
realizes finer increments on tape position tracking.
* Large Dolby-B noise reduction mode indicator on back side of control panel
(visible in closed position) in orange. Dolby-C noise reduction mode indicator
left at its original green colour. This realizes colour indication of noise
reduction mode at a glance from afar.


**** REFERENCE TAPE CALIBRATIONS
The Akai GX-F91 support three tape types - IEC type I, II and IV (Normal, CrO2
and Metal positions). While the on-board auto tape tuning microcomputer adjusts
the recording circuitry parameters to suit virtually any tape type inserted,
this deck also has three default reference positions, one each for each tape
type. These reference mode positions have been calibrated for modern production
versions of TDK Dynamic (D) type I tape, TDK Super Avilyn (SA) type II tape, and
TDK Metal Alloy (MA) type IV tape.



Si inca o precizare - pe caseta crom, pe viteza marita de x 1.3 raspunsul de frecventa sare la peste 25khz si s/n ratio la 74 db

[momolo]

Ok!
totusi sunt perseverent ca poate aflu si eu! - merita sa cumpar un AKAI GX 75 MKII ? Parca am vazut si MKIII dar nu sunt sigur. Pe e-bay cam "ploua" cu GX 75!...si ma intreb de ce atatea deodata?!
Intradevar, toate vazute pe net sunt negre!

Si o explicatie! - am primit de la IR Babuin o caseta trasa pe faimosul GX F91 impreuna cu alte 3 inregistrari (Technics, Naka Dragon si Pioneer CT93). Pot sa va asigur ca asemenea dinamica si energie ca din inregistrarea de pe F91 eu nu am auzit ever! Este la distanta de toate celelalte!...fapt pentru care mi s-a pus pata sa-mi gasesc si eu un F91!...dar nici urma pe net iar in alta parte nici atat! In schimb observ ca GX 75 este gasibil si chiar foarte accesibil ca pret. Intrebarea e daca se merita totusi? (e pentru colectionari si cunoscatori).
Totusi, au capete discrete? Ca la Nakamichi? Adica sa nu fie lipite impreuna?! Eu stiam ca Naka au fost singurii.

...iar pe langa asta nu am renuntat sa gasesc un AIWA ADF 910 ! Sunt vreo 2 pe e-bay dar unul parca are un defect iar celalalt e dubios.
IR Babuin, ai avut vreodata un AIWA ADF 910 ? Se merita? Eu am tras pe unul acum muuulti ani si pe vremea aia aveam alte criterii; mi-a ramas in cap ca nu am auzit ceva mai rafinat si mai pur in materie de casdeck!

...si sa nu mai zic de SONY din seriile ES cu lemne!...si iata cum ma ia valul! (la Hitachi nici nu sper ca nu am vazut la vanzare minuni din alea pe e-bay!).
..dar evident, astea de sus nu au haz fara macar un Pioneer sau un Technics din generatiile bune (cele vechi).

PS - pana in tavan mai e loc!

[IR Babuin]

GX 75 E de duzina, sint cu zecile la ebay.de ....F91 este extrem de rar - daca apare 1, max 2 de vinzare pe an pe tot ebay-ul...GX95 MKII are capetele discrete, aceleasi ca la F91 al meu si la A&D

[Colonelu']

momolo, dupa citirea ultimului tau post mi-am adus aminte de melodia de la Voltaj - "Mi s-a pus pata pe tine".