Monoblock amplifier building torrent

They must be placed accordingly. Power the circuit with 3 to 12 volts. But, you need 12 volts if you want to get full power out of it.

The thing that makes it possible to create a mono amplifier circuit so easily, is the TEA chip. It is an old chip, so it might not be available for too long. The old and cool chips have a tendency to go out of production at some stage. You can use www. You can power the circuit with anywhere from 3 to 12 V.

Trust me I'd love to upgrade to the JS monos but I've never seen a pair for sale. I'd like a solid state system and a valve system. The incoming audio note kit takes care of the latter but I can't find anything I like as much as the John Shearne for the ATCS and they could do with a touch more grip. Yes that is the case, I think there was someone on the forum who had Shearne monos, don't know if he still has them.

I will rack my brains amnd try and remember who it was. I'd love to hear them. If they do everything the integrated does but with more power and control they'd be very very special.

If the amps could be bridged, then it may be possible to convert a stereo amp into a monoblock. However it does seem rather drastic, would kill any residual value and may not actually improve them much. It's a good amp - why not save up for a bit until you can get a pre-power or monos?

Passive bi-amping is unlikely to make much improvement I think it is only likely to help where the amp is a bit of a wuss and can't drive the speakers. If you want a step towards pre-monos, I'd just get a decent pre anyway. You might be surprised how much this can help. The whole reason I got to thinking about this is because I can't find the monos anywhere.

Not totally comfortable with breaking up perfectly good no longer manufactured amps though - bit of a shame. Cheers for the link Puffin - I'll have a good read later when I get a sec. The project includes PCB image files and can also be built on a protoboard. Chey in Thailand. The DIY enclosure is constructed from aluminum sections and the audio output transformer covers are built using copper clad board.

The circuit is very simple, a single-ended output stage using 6L6 or tubes, driven by 6SJ7 or 6SD7 cutoff pentodes. Chey is very pleased with the results and has replaced his solid state amp with this beauty.

Nice work! The monoblock tube amp kit uses an SRPP input stage with driver tubes and a push-pull output stage with KT88 power tubes. A solid state power supply is used. The tube amp kit comes with a nice steel enclosure and the power output is about 25 watts. The amplifier circuit is very simple with minimal parts in the signal path. The result is a very nice sounding tube amplifier kit that performs well.

The amplifier measures well and Bruce has reported that the sound is very good with clean detailed mids and highs and a great sound stage. EL34 tubes can be used in place of the KT88 tubes. The power supply uses a 5U4 dual rectifier. Each channel uses both sections of a vacuum tube with LED biasing used on each section. To keep potential hum at a minimum, the heater filaments are supplies with DC.

If you start running out of current with any amplifier, then the solution is either to get a better amp, one that provides more current, or to parallel the stereo outputs, NOT bridge, so you keep the same number of volts, but double the current capacity.

Quad used to provide simple kits to turn the and into a high ish -current mono amp by paralleling. It used to work a treat into Mission Argonauts! Theoretically yes, but virtually all amplifiers are current limited, so won't quite double their current into 4 ohms. Some will, Krell, larger MF and a few others will. In general, amps with switch-mode or "smart" power supplies will hold their voltage up regardless of load until quite severely loaded. Most amps with conventional "sagging" supplies won't.

Thanks for your reply. You're certainly right about my being confused over this. When you say 'parallel the stereo outputs' what exactly do you mean? What connections have to be made? Are you referring to using one to feed left and right speaker tweeter connections, while the other feeds the left and right woofer connections? Paralleling a stereo power amp isn't something you can do without getting inside the unit and making modifications. Effectively, you connect the inputs together and the outputs together, so the tw halves are working in parallel.

If you do this without modifications, small differences in amplifier gain means that one amplifier tries to drive current into the other, the result of which is probably high distortion, possibly damage. You need to balance the gains exactly, so that neither amplifier has more gain than the other. Quad used to provide the kit for the and , and I modified several with success.

Don't try this without knowing exactly what you're doing.