RSC SUPER-THIRTY amplifier, any info? - UK Vintage Radio Repair and Restoration Discussion Forum

jay_oldstuff · 25th Oct 2005, 10:42 pm

Hi all, I picked up this amplifier, as per title, recently.

Can anyone tell me anything about this amplifier or its manufacturer please ? Thanks in advance

Jay

mickjjo · 25th Oct 2005, 11:06 pm

Hi Jay, I've found the attached ad from Practical Wireless Nov 1968, seems to have been available as a kit or ready built, Would have cost a months wages for me then,

. Not sure if RSC still exist though....

.

Regards, Mick.

Ed_Dinning · 26th Oct 2005, 12:46 pm

Hi Jay, I remember the ads from this company, they go back well into the valve era. Not the most Hi-Fi of designs, it will probably use 2N3055's as the output devices. It might just be Ge types (I may have some spares).
The circuitry will be quite simple.

Ed

Aub · 26th Oct 2005, 1:27 pm

According to the ad from PW, the mono version used NKT series transistors. I remember RSC opening up a shop in Coventry in the mid 70's, when the disco boom kicked in. I think it closed down about 15 years ago. Similar to another company called RCS - Radio Componet Specialists. I'm note sure that they still exist either.

Anyway, hope you have fun with it when it arrives.

All the best.

Aub

jay_oldstuff · 28th Oct 2005, 10:05 pm

Hi all,

Sorry it's been a couple of days (work's a little hectic at the mo)
anyhow i've now received the amp, it needed very little work to get going, well actually it only needed a new power cable and a shot of contact cleaner got rid of the crackle on the controls.

I think it's definately a kit although the the quality and neatness of construction is first rate, the cabinet is another matter being of screwed together ply and very amateurish (or was this produced in a chassis only version for you to construct your own cabinet?
Anyhow I have some planks of 3/4 inch mahogany in the garage so hopefully i should be able to produce something a little better

.

All the transistors used in this amp are Mullard-branded; we have OA5's OC81's and OC75's the output trannies are a pair of AD149's and they perform very well (much better than I was expecting) in fact I got a shock at the sound quality with virtually no distortion even with the volume right up.
It's so good in fact it's replaced the 80's Japanese amp I was using with my computer.
All in all not bad for the £11 I paid for it
Thanks all for the info.

Jay

25th Oct 2005, 10:42 pm	#1
jay_oldstuff Octode Join Date: Jan 2005 Location: Hyde, Greater Manchester, UK. Posts: 1,074	RSC SUPER-THIRTY amplifier, any info? Hi all, I picked up this amplifier, as per title, recently. Can anyone tell me anything about this amplifier or its manufacturer please ? Thanks in advance Jay Last edited by Darren-UK; 11th Jun 2007 at 10:45 pm. Reason: Defunct ebay link removed and post reworded accordingly.

25th Oct 2005, 11:06 pm	#2
mickjjo Rest in Peace Join Date: Jul 2004 Location: Dartford, Kent, UK. Posts: 1,661	Re: RSC SUPER-THIRTY any info? Hi Jay, I've found the attached ad from Practical Wireless Nov 1968, seems to have been available as a kit or ready built, Would have cost a months wages for me then, . Not sure if RSC still exist though.... . Regards, Mick. Attached Thumbnails

26th Oct 2005, 12:46 pm	#3
Ed_Dinning Dekatron Join Date: Jan 2004 Location: Newcastle upon Tyne, Tyne & Wear, UK. Posts: 8,195	Re: RSC SUPER-THIRTY any info? Hi Jay, I remember the ads from this company, they go back well into the valve era. Not the most Hi-Fi of designs, it will probably use 2N3055's as the output devices. It might just be Ge types (I may have some spares). The circuitry will be quite simple. Ed

26th Oct 2005, 1:27 pm	#4
Aub Nonode Join Date: Mar 2005 Location: Nuneaton, Warwickshire, UK. Posts: 2,039	Re: RSC SUPER-THIRTY any info? According to the ad from PW, the mono version used NKT series transistors. I remember RSC opening up a shop in Coventry in the mid 70's, when the disco boom kicked in. I think it closed down about 15 years ago. Similar to another company called RCS - Radio Componet Specialists. I'm note sure that they still exist either. Anyway, hope you have fun with it when it arrives. All the best. Aub

28th Oct 2005, 10:05 pm	#5
jay_oldstuff Octode Join Date: Jan 2005 Location: Hyde, Greater Manchester, UK. Posts: 1,074	Re: RSC SUPER-THIRTY any info? Hi all, Sorry it's been a couple of days (work's a little hectic at the mo) anyhow i've now received the amp, it needed very little work to get going, well actually it only needed a new power cable and a shot of contact cleaner got rid of the crackle on the controls. I think it's definately a kit although the the quality and neatness of construction is first rate, the cabinet is another matter being of screwed together ply and very amateurish (or was this produced in a chassis only version for you to construct your own cabinet? Anyhow I have some planks of 3/4 inch mahogany in the garage so hopefully i should be able to produce something a little better . All the transistors used in this amp are Mullard-branded; we have OA5's OC81's and OC75's the output trannies are a pair of AD149's and they perform very well (much better than I was expecting) in fact I got a shock at the sound quality with virtually no distortion even with the volume right up. It's so good in fact it's replaced the 80's Japanese amp I was using with my computer. All in all not bad for the £11 I paid for it Thanks all for the info. Jay Last edited by Darren-UK; 11th Jun 2007 at 10:52 pm. Reason: Spelling corrected for benefit of search.