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Author Topic: GK 250ML  (Read 2932 times)

Offline PatricBrown

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GK 250ML
« on: May 23, 2006, 07:30:57 AM »
Remember those? The little shoebox sized amp with two 6.5 inch drivers?
I have one, Series II with the recessed knobs, and the surround on one of the drivers has deteriorated to where it's blowing pieces of itself through the grill. I figured the other one wasn't far behind, and in my searches for replacements wound up calling GK, and, strange to say, they happened to have drivers for them. They don't make the amp anymore, but still keep drivers, though now made by Eminence,,,rated at 85 watts apiece. GK sent me a pair. The amp is SS at 100 watts RMS.

Has anyone ever taken one of these apart,,enough to suggest how to properly get to the drivers, to replace them. I got it, used, back in '98 or so, and the speakers were still working at that juncture. They still work,,but the surrounds need to be intact.  I've taken the top off this thing, to get to the input module, and you also need to get the top off to adjust certain pots, which are user accessible. I 'assume' the top has to come off first before one can go further toward getting the back off,,or is it the front?

It takes someone who has done this with them to know what I'm talking about here with these little all metal monsters. Where I live, it's not easy to find someone to work on them, and before I plunge in myself, I thought I'd ask. I know about not touching caps, etc.,,it's just getting at where the speakers are located to do the swap that concerns me.

Though battle scarred, it works pretty well otherwise, and is a pretty non SS sounding amp. Someone on Harmony Central said it's the most tube sounding SS amp they've heard. I'd tend to use it to add volume to another rig through the GK's balanced input, coming out the balanced outs of the master amp. The GK is stereo(80's to the max), and works pretty well in this capacity. Darned loud, with a pretty good sound,,especially if being driven by the preamp of a nice master amp.

Thanks for any help.

Pat

2005 Fly Deluxe Majik Blue
THD Univalve w/one12 Avatar Bottom(Eminence Private Jack)
Traynor YCV20WR
various & assorted other acoustic & electric
Home Studio
http://www.myspace.com/patrickronaldbrown

2000 Fly Stealth Gray Hard Tail, 2000 Reverend Slingshot, THD Univalvew/one12 Avatar Bottom(Eminence Private Jack), Traynor YCV20WR, Ableton Suite 8, various & assorted other acoustic & electric, Home Studio

It is better to know than to believe.

Live is like a box of chocolates; you never know what you're going to get.

GK 250ML

Offline 908ssp

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GK 250ML
« Reply #1 on: May 23, 2006, 08:45:37 AM »
Hi Pat
I have one in my collection. I need drivers too can you send me contact information for GK.

I have had mine apart and it isn't easy. It isn't hard but more has to come apart then you would expect. Just don't lose any screws, pry the edges apart because they used rubber strip seals and those stick. And don't pull too hard as some wires are connected from one part to the next.

I have been wanting to use mine around the fire pit in the yard but the speakers are shot. [^]

Alex

Alex

[IMG]http://i146.photobucket.com/albums/r245/908ssp/ThumbNails/_1010802.jpg[/IMG

GK 250ML

Offline PatricBrown

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GK 250ML
« Reply #2 on: May 23, 2006, 09:11:49 AM »
Alex, that pretty much sums up it up pretty well,,what I anticipate. Get the top off,,then you can get to the screws that face down, right under where the top was, and has to be off, to get to them. Yep, I'm scared of pulling wires loose as the back panel moves becaues all of the switches back there are wired in. I'll keep you posted on any progress.

I called, and think it was Gene with whom I spoke first, then he put me over to Lany,,see below:
 
It's Lailany Valdez(the lady)
and her number is 209-234-7300 ext. 120
She was real nice, but you may have to talk to a shop person to make sure what you need, then you get back with her, and order.

Whomever you talk to, just explain what's up, and what you need, and it should go pretty smoothly. They were $54 apiece, with a few dollars shipping.

Pat

2005 Fly Deluxe Majik Blue
THD Univalve w/one12 Avatar Bottom(Eminence Private Jack)
Traynor YCV20WR
various & assorted other acoustic & electric
Home Studio
http://www.myspace.com/patrickronaldbrown

2000 Fly Stealth Gray Hard Tail, 2000 Reverend Slingshot, THD Univalvew/one12 Avatar Bottom(Eminence Private Jack), Traynor YCV20WR, Ableton Suite 8, various & assorted other acoustic & electric, Home Studio

It is better to know than to believe.

Live is like a box of chocolates; you never know what you're going to get.

GK 250ML

Offline 908ssp

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GK 250ML
« Reply #3 on: May 23, 2006, 04:45:45 PM »
Hi Pat I called Lailany she said they were out of speakers but would be getting some in end of June so I put in an order and she will call me when they arrive. It is a pretty good sound from such a tiny transistor amp. Reminds of when I was a kid and got my first transistor radio. I kinda wish it was in better condition but if I can get it working right being rough means I can abuse it without remorse.
[^]

Alex

Alex

[IMG]http://i146.photobucket.com/albums/r245/908ssp/ThumbNails/_1010802.jpg[/IMG

GK 250ML

Offline PatricBrown

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GK 250ML
« Reply #4 on: May 23, 2006, 06:03:31 PM »
Hi Alex,
I'm happy to help you get through. They were really nice over there at GK, I thought, even not minding helping people who had their old product no longer made. Good luck with the install. If I've not gotten mine in by then, I may ask you for some details. It's a cool amp,,really loud, and so small, you can put it behind something, and no one knows where it's coming from. Sounds alot bigger than it is. My input module is a little funky, and I got one of those too, when I ordered. The old one seem to be working now,,but one never knows. Otherwise, no doubt a cap or two is old,,but it still rocks. I think I paid $115 for it from some store in NC, back in '98 or so,,less than I paid for the speakers and input  module I just got.
Mine has 2/89 written in a box on the back, and I naturally thought that was Feb '89.
You can pull it up on Harmony Central and read some interesting, and funny stuff about the little bugger.

Pat

2005 Fly Deluxe Majik Blue
THD Univalve w/one12 Avatar Bottom(Eminence Private Jack)
Traynor YCV20WR
various & assorted other acoustic & electric
Home Studio
http://www.myspace.com/patrickronaldbrown

2000 Fly Stealth Gray Hard Tail, 2000 Reverend Slingshot, THD Univalvew/one12 Avatar Bottom(Eminence Private Jack), Traynor YCV20WR, Ableton Suite 8, various & assorted other acoustic & electric, Home Studio

It is better to know than to believe.

Live is like a box of chocolates; you never know what you're going to get.

GK 250ML

Offline 908ssp

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GK 250ML
« Reply #5 on: May 23, 2006, 08:53:48 PM »
Mine must be a series one as it has the knobs are all sticking out in front. There isn't any date on it that I can see and some joker painted it dark gray with a brush. I bought it for a little more then you did only about three years ago on eBay and I should have sent it back as the picture and description left a lot to be desired but for the price I figured it wasn't worth the grief. I changed one speaker with a 6.5 inch car woofer as I had it and it fit but it was a 4 ohm woofer and the stock speakers were 16 ohm so I was afraid to change the other one or use it. So it has just been sitting. It is something I would like to fix anyway. [^]

Alex

Alex

[IMG]http://i146.photobucket.com/albums/r245/908ssp/ThumbNails/_1010802.jpg[/IMG

GK 250ML

Offline DrJeff

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GK 250ML
« Reply #6 on: May 25, 2006, 08:48:23 PM »
You may have already heard about it, but its worth a mention that GK will be breaking out a new version of the little lunchbox amp. They said that the new version will have a DSP engine complete with motorized knobs. Given the sturdy construction of GK product (except for my dearly departed 2100SEL *sniff*)it should be a neat little toy.'97 Nitefly SA
'78 Music Man Sabre II
'79 Music Man Sabre II
'83 Ovation Balladeer
Ampeg Reverberocket
Tech 21 Trademark 60
Crate CA125
Rgds,
Jeff

GK 250ML

Offline PatricBrown

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GK 250ML
« Reply #7 on: May 26, 2006, 06:59:55 AM »
No, I hadn't heard that Jeff. Way cool. That could explain why they're bothering to stock the 6.5 inch drivers. When I talked to the parts guy on the phone, he said something to the effect that 'now they're not the original Pyle(drivers hee), but are now made by Eminence, and are our own 'evolved' take on what sounds best these days.

Pat

2005 Fly Deluxe Majik Blue
THD Univalve w/one12 Avatar Bottom(Eminence Private Jack)
Traynor YCV20WR
Line6 Flextone III(one 12)
various & assorted other acoustic & electric
Home Studio
http://www.myspace.com/patrickronaldbrown

2000 Fly Stealth Gray Hard Tail, 2000 Reverend Slingshot, THD Univalvew/one12 Avatar Bottom(Eminence Private Jack), Traynor YCV20WR, Ableton Suite 8, various & assorted other acoustic & electric, Home Studio

It is better to know than to believe.

Live is like a box of chocolates; you never know what you're going to get.