Jonbass12345 Posted September 5, 2023 Share Posted September 5, 2023 Hi does anyone know what bulbs were used to back light the HH sign on these amps? Also does anyone know of a replacement eq that can be fitted to these amps thanks Jon Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted September 5, 2023 Share Posted September 5, 2023 (edited) These are getting close to their 60th birthday. I will dig back into my archives, but don't hold your breath. No Joy, but email MAJ at http://www.majelectronic.co.uk/ there is almost nothing he does not know about HH, Edited September 5, 2023 by Chienmortbb 1 Quote Link to comment Share on other sites More sharing options...
rmorris Posted September 5, 2023 Share Posted September 5, 2023 3 hours ago, Jonbass12345 said: Hi does anyone know what bulbs were used to back light the HH sign on these amps? Also does anyone know of a replacement eq that can be fitted to these amps thanks Jon Do you have a photo to confirm the amp ? IIRC there were several models that were designated "Bass Baby" or similar name. Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted September 5, 2023 Share Posted September 5, 2023 This is what MAJ say on the subject: The Performer Range - Super 60, Power Baby, Performer, Bass Baby, Bass Machine. When these arrived for evaluation and comment on my bench as the replacements for the superb music range products, I opened them up expecting something else (in the words of Eddie Cochran). Not so, I was very disappointed. The build was again awkward, with a thick wiring umbilical between front and rear panels, and the whole build method appeared to be a backward step from the previous fine efforts. But they had used junction fets as building blocks, mixed with bipolar transistors and op amps, and had a mosfet output stage. They sounded very good, and the Bass Machine with its 250 Watts output was the most powerful Bass amp going. Great. But the input fets were gate unprotected, and they went down EVERYWHERE. By the time HH issued an official protection fix (A year later!) we’d been doing this anyway. These amps cosmetically strongly resembled the American Acoustic amps being imported at that time – with the pastel colour front panels - although they were electrically quite different. No disrespect to anyone but I don’t think HH should have been concerned at all, or chased this particular dragon – the Acoustic amps were good working stuff but blandly uninteresting and just about as unreliable as everything else of the period. OPINION: Actually very good sounding kit but heavy, complicated, awkward build, and not very reliable for the same reasons. And not yet very collectable. Cheap now. Difficult to mend/service cost effectively. Footswitch data see homepage. The Studio Series Studio 50 The earliest HH studio series amp, single channel with reverb 50 watt (darlington) op stage, 1 x 12" combo. Basic, good sounding, good build, bulletproof, heavy. If you see a head version on ebay, someone has chopped one up - they never made it as a head. Many were sold to schools/colleges - these are a dam good buy if offered. Studio 30 and Studio 60 Guitar amps. Sold alongside the Performer range as a lower power, lower cost option (first time buyers?) They were actually very good sounding single channel combo's, and all had the high voltage FET input stages and Hitachi mosfet output stage, reverb and distortion etc. Studio 60B Bass amp. Similar, with high voltage FET input stage and mosfet output stage. Compressor facility. Studio 100 Guitar amp. Available as head or 212 combo, with reverb and distortion. One pc board design with preamp similar to the Performers but using transistor output stage similar to AS00014. Bassamp 100 Bass amplifier, often confused with VS Bassamp. The front panel of this one does not light up green, again one pc board design with preamp similar to the Bass Machines but using transistor output stage similar to AS00014. Paramid EQ and (very good) opto compressor. Was available as head or combo. IMPORTANT: In their infinite wisdom, HH emblazoned the Studio30/60 guitar combos with the "Power Baby" logo, The Studio 60B with the "Bass Baby" logo, the Studio 100 with the "Performer" logo, and the Bassamp100 with the "Bass Machine" logo. Dohhh. The confusion they greated between these Studio series amps and the Performer range is now ledgendary. Please be specific if you are asking for service information or advice. Its a real headache. Easiest way, if you think you have a have a "Performer" amp, for example, tell me if it is single channel or two channel with sound switch. That should do it... OPINION: Studio 50 - Great basic 50 Watt combo. Studio 30/60/60B - Look a bit odd, but good sound, serviceable, well liked. Studio 100 - I know the combo looks like an old gas oven but was good sounding and powerful and has proved to be quite reliable. Bassamp 100 - ditto but trying to be a VS Bassamp, but good sound and reliable also. 2 Quote Link to comment Share on other sites More sharing options...
itsat34 Posted October 3, 2023 Share Posted October 3, 2023 Hi Jon, did you get an answer to this? I've got a similar issue on mine and they look like two small screw thread bulbs? Martin Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted October 3, 2023 Share Posted October 3, 2023 Ask MAJ Quote Link to comment Share on other sites More sharing options...
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