AUDIOLAB 8000Q PDF

The Audiolab Q preamplifier in this article came to me with a fault which would see it sometimes take a long time to turn on. By a long time, I mean a really long time — this Q would sometimes take up to 30 minutes to become operational after turning it on. Frequency response: 10Hz to 20kHz Total harmonic distortion: 0. I found one definite fault and one possible contributing fault in this Audiolab Q. A few of the electrolytic capacitors in the multiple regulated power supplies showed signs of aging.

Author:Shakanris Fegor
Country:Haiti
Language:English (Spanish)
Genre:Art
Published (Last):2 April 2008
Pages:383
PDF File Size:14.69 Mb
ePub File Size:6.74 Mb
ISBN:875-6-34298-790-7
Downloads:11884
Price:Free* [*Free Regsitration Required]
Uploader:Tajar



The Audiolab Q preamplifier in this article came to me with a fault which would see it sometimes take a long time to turn on. By a long time, I mean a really long time — this Q would sometimes take up to 30 minutes to become operational after turning it on. Frequency response: 10Hz to 20kHz Total harmonic distortion: 0. I found one definite fault and one possible contributing fault in this Audiolab Q. A few of the electrolytic capacitors in the multiple regulated power supplies showed signs of aging.

One was bulging and clearly suffering, exhibiting low C and high ESR. The electrolytic capacitors in the Q are made by a particularly awful Chinese brand called Capxon.

Capxon capacitors feature in some spectacularly cheap and awful gear. Nice work Audiolab. I replaced them with premium high-temp, low ESR parts from stock.

The control circuit inside the Q senses DC offsets and sends the preamp into standby until the DC fault clears. This is a very sensible protection circuit, but one that will prevent the unit from working in the presence of other faulty gear.

In the meantime, this Audiolab is working perfectly again, with the added bonus that it now sounds much better than before. Overall, this repair was very successful, with normal operation restored to the Audiolab Q. She sounds fantastic, works perfectly and the bonus here is that service life is now extended, due to the better parts I installed in her. Hi Mike, thanks for your quick reply. I am based in Wellington, NZ.

So not within range. I am very confident I have the same issue, and its on my head if this does not work. For confidentiality on your solution, please could you email kylerichardnicol googlemail. In exchange, I will recommend you guys to my uncle and his family based in Perth, and also my colleagues based there. I can also let you know how my fix goes. Finally, if I ever move to Perth I will visit you guys!

Any help would be greatly appreciated. Thanks, Kyle. Hi Kyle, no problem and happy to continue the conversation here for now. Hope all is well over in NZ. In terms of caps, I just grab the parts directly from stock as I need them. You have to remember I repair dozens of units a month and that repair was a year or two ago!

It might be best if you call and speak to me directly on , with the Australian codes in front of course. Look forward to chatting on the phone! Hi, brilliant post. Any chance you could tell me what capacitors you have replaced? Many thanks. Hi Kyle, thanks for writing and glad you enjoyed the post!

Are you local and in a position to bring her in? Regards, Mike. The Audiolab Q preamplifier is a really nice piece of gear, let down by a handful of cheap, factory-fitted parts. In this article, I repair a misbehaving Q. Nicely laid out, the Audiolab Q features all components except the toroidal transformer located on just one high-quality fibreglass PCB.

You can see unpopulated spots of the board for input transformers for an MC phono pre, if fitted. Note the neat, clean layout with almost zero wiring — very nice. Board-mounted pot and space for MC step-up transformers. Note the quality board-mounted RCA connectors and relays everywhere, for low-noise, high-reliability switching.

Digital control is under this RFI shield — again, a nice touch. The control unit detects DC offset, power supply issues etc. This is where the trouble was. Note the multiple power supply regulators, very much like Naim use in their gear.

Spot the bulging one..? Nominally rated at uF, this cap tested at around 40uF and 2. The ESR of the new parts was around 0. Out they come, all of them… Here they are, next to some of their replacements. As I always do, I used only premium replacements, many times the cost of the original parts, but always worth it. Job done, all small power supply capacitors replaced.

Another view of the replaced parts Results Overall, this repair was very successful, with normal operation restored to the Audiolab Q. Like this: Like Loading Thanks, Kyle Loading Mike Loading Kyle Loading Feel free to share your thoughts and leave a comment! Cancel reply.

Cherishing Classic Audio.

BLUE DEVILS DITTY SHEET MUSIC SNARE PDF

Audiolab 8000Q Preamplifier Repair

Read something you like? Want to know more? Call us on Back to Store.

ARTE INTERNACIONAL BRASILEIRA TADEU CHIARELLI PDF

Audiolab 8000 Preamplifiers

Some claim that monos are intrinsically superior to stereo amps or integrateds due to ultimate channel separation, with separate power supplies further vitally relevant to dynamic peaks. That's alright for ultimatists counter the cheapskates - but how'z'about us? Isn't it feasible that the higher production costs of monos steal funds from areas audibly relevant? It's back to listening, all else mere speculation.

BA8206BA4 PDF

Pre e finale. Dal sito:. Audiolab is one of those audio makers who have never been known to produce a dud. Not much of that on show here, for better or worse.

Related Articles