Juke Box Amplifier. Just thought I would share this with you. - UK Vintage Radio Repair and Restoration Discussion Forum

vinrads · 17th Apr 2022, 11:49 am

How to make a silk purse from a pigs ear, this Jukebox amp needed a total strip down and rebuild ,I also fitted a mm pre amp seen on the left with power supply on the far right , and it works very well . Mick.

fetteler · 17th Apr 2022, 12:00 pm

Very nice, what a difference! Do you have the jukebox it lives in?

Steve.

vinrads · 17th Apr 2022, 1:08 pm

Thanks Steve ,I don't have the Jukebox this one of many repairs I do for a chap that deals in Jukeboxes .This one actually belongs to his wife, I only hope that he/she is pleased with the looks and the sound , he did say the original sounded good ,hope it sounds as good or better now its good for mm input fingers crossed. Mick.

vidjoman · 17th Apr 2022, 1:46 pm

Didn’t need a preamp as they were designed for use with a MM cartridge. It’s an AMI or a UK BAL-AMI, both basically the same.

vinrads · 17th Apr 2022, 1:58 pm

Sorry I should have made it clear ,I used the circuit for a Leak tl12 plus the tone control uses the first ECC81 . hence the pre amp .also I don't think it was the original cct as the owner said it was using a xtal cartridge,and was told there was no cct to be had ,thats why I went for a known good design and now with a circuit . Mick.

joebog1 · 17th Apr 2022, 11:21 pm

Good move Mick, and nice work too!!.

Joe

fetteler · 18th Apr 2022, 1:00 am

Yeah, I agree, the TL12 circuit is a classic and I bet it will sound lovely.

Steve

17th Apr 2022, 11:49 am	#1
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,759	Juke Box Amplifier. Just thought I would share this with you. How to make a silk purse from a pigs ear, this Jukebox amp needed a total strip down and rebuild ,I also fitted a mm pre amp seen on the left with power supply on the far right , and it works very well . Mick. Attached Thumbnails

17th Apr 2022, 12:00 pm	#2
fetteler Octode Join Date: Jul 2011 Location: Staffordshire Moorlands, UK. Posts: 1,475	Re: Just thought I would share this with you . Very nice, what a difference! Do you have the jukebox it lives in? Steve. __________________ Those who lack imagination cannot imagine what is lacking...

17th Apr 2022, 1:08 pm	#3
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,759	Re: Juke Box Amplifier. Just thought I would share this with you. Thanks Steve ,I don't have the Jukebox this one of many repairs I do for a chap that deals in Jukeboxes .This one actually belongs to his wife, I only hope that he/she is pleased with the looks and the sound , he did say the original sounded good ,hope it sounds as good or better now its good for mm input fingers crossed. Mick.

17th Apr 2022, 1:46 pm	#4
vidjoman Dekatron Join Date: Jun 2013 Location: East Sussex, UK. Posts: 3,326	Re: Juke Box Amplifier. Just thought I would share this with you. Didn’t need a preamp as they were designed for use with a MM cartridge. It’s an AMI or a UK BAL-AMI, both basically the same.

17th Apr 2022, 1:58 pm	#5
vinrads Dekatron Join Date: Feb 2009 Location: Chesterfield, Derbyshire, UK. Posts: 3,759	Re: Juke Box Amplifier. Just thought I would share this with you. Sorry I should have made it clear ,I used the circuit for a Leak tl12 plus the tone control uses the first ECC81 . hence the pre amp .also I don't think it was the original cct as the owner said it was using a xtal cartridge,and was told there was no cct to be had ,thats why I went for a known good design and now with a circuit . Mick. Last edited by vinrads; 17th Apr 2022 at 2:14 pm.

17th Apr 2022, 11:21 pm	#6
joebog1 Banned Join Date: Jun 2015 Location: Mareeba, North Queensland, Australia Posts: 2,704	Re: Juke Box Amplifier. Just thought I would share this with you. Good move Mick, and nice work too!!. Joe

18th Apr 2022, 1:00 am	#7
fetteler Octode Join Date: Jul 2011 Location: Staffordshire Moorlands, UK. Posts: 1,475	Re: Juke Box Amplifier. Just thought I would share this with you. Yeah, I agree, the TL12 circuit is a classic and I bet it will sound lovely. Steve __________________ Those who lack imagination cannot imagine what is lacking...