Hill Audio documentation - anyone to contribute?

[JoolsB]

PS:

If they are 2N3055's, I've just found 2 in my box of bits if they're any use to you.

 

[poynton]

PS:

If they are 2N3055's, I've just found 2 in my box of bits if they're any use to you.

Thanks for the offer. I think the 2N3055 is too low voltage etc.
I also have a lot as well.

In my DX700, one channel has all DX1000s but in the other channel, some transistors have been substituted by 2N3773 and MJ15003.

Andy

 

[JoolsB]

No probs. I should have read a bit more - thought you were talking about an LC amp.

I don't remember the DX transistors being matched gain-wise which is good.

 

[burbeck]

hi the normal sub for the Hills was mj15024, i found that it was best to use motorola trans only, replace the whole 'rail' is best, less offset problems

 

[OlaE]

How's it going...

Hi Grooverider,
My LC1200 has a borken power amp. I'm looking for a wiring diagram, so I just wounder where Can I find your HomePage.

If anyone else have a schematic, feel free to send me an email.
ola.ericsson@sverige.nu

Thanks alot!

 

[JoolsB]

Hi Ola

burbeck has very kindly posted the schematics for the front & back PCB's.

I've never seen a 'wiring' diagram for the LC but the wires are quite easy to follow.

 

[ceharden]

If I've missed the info then my apologies but I've got an LC800 on the bench showing some of the classic symptoms. DC offset of about 0.4V on both channels and a low level hum which seems to come and go, especially if you play with the wiring.

Can anyone tell me what, if any adjustments/repair can be made to get the DC offsets back to something more acceptable please?

 

[jbarker]

Just dug my LC-800 out to replace the speaker muting relays - last time it was used these were a bit crackly. Now have got to pluck up courage to unplug the rear board...

I've attached most of an LC Series manual, which may help some people. I had to ZIP it as PDF too large

JB

 

[Roberteh]

I am using a Hill Audio Multimix/Stagemix bd. & having some user problems, some inputs don't seem to work, can't add fx for some reason & can't get separate monitor mix. Maybe just a config I am not used to. Would be helpful to find some operations doc's for this unit....user manual. So little information seems available & thought with this on going thread, I find some help? Any direction would be appreciated.

RkA

 

[noisywill]

Hi Folks,

I have two Hill LC1200s. One works fine in bridged mode, the other will work in bridged mode, but only one signal light lights up, and the input attenuator needs to be turned up 6dB more than the other unit.

When in stereo mode, this unit seems to work fine...bit baffling really...any ideas?

Oh, thanks for posting the manual/diagrams jbarker!

Cheers.

 

[jez]

I believe Hill Audio made the Chameleon amplifier? If so I reverse engineered it a while back and posted the diagrams on this very site... do a search

 

[camdenraver]

LC1200 AMP loud speaker bang as amp switched on? help./

I Have a HILL AUDIO LC1200 AMP, when powered up, there is a loud split-second bang through the speakers ... After that, everything works fine.

how can i get rid of this power bang noise on power up please?

 

[monitor]

Hill audio LC800

I have the same problem on a LC800 amp did you find out what was causing it

Dave

 

[DblooD]

G'Day

I have 2 lc1200's both with problems.
I have taken them to the shop to be repaired.
I have forwarded the schematics from here to be informed that
they are missing the output stages.
Can somebody please help?

 

[blearyeyes]

Wow resurrecting an old thread... I have a Hill Remix 24x8x16x2 I used in my post production facility for many years. Sure would love to get any schematics that might be out there.

 

[ed247925]

hi
oh dear, i have mislaid the bulk of my Hill Audio stuff cant find it anywhere at the moment. should i slap myself on the wrist?

however here are the drawings (such as they are) that i have found. one is the driver/front board the other is the back board, the one missing is the output board.

i do have a full set for the LC Series in a folder that has dissapered i will post when i find it

Hi Good day This is not a full set where is the power output stage of the Hill LC1200 diagram. Do you or anyone you know have a copy Edward

 

[ed247925]

Hill LC1200 Amp 820 ?

Hi Good day I have a Hill LC1200 amp and i would like to know if anyone has the power output stage diagram for this amp. I also took 2 brown looking component out they were located inside the heat sink of the amp marked 820 ohm but when i tested with metreit gives me a steady reading of 12k but when i reverse the leads i get a movement on the metre like i am testing a capacitor and it finally settles down over 100k ohms. Can anyone help me Thank you Edward