This project is dedicated to getting the avid hobbyist the right parts at a great price without compromise.
Like you, I enjoy putting together a great or classic amplifier circuit; wiring up transformers, capacitors and eyelet boards and making sweet soulful noise. Each amp I make has a unique voice and the tubes, speakers and magnetics each play a role in finding that sound.
It's always seemed outrageous to me that it required $80 or $150 worth of magnetics to reproduce an amp that probably sold for $100 in the 60's.
But...Hey! I have been involved in manufacturing of magnetics for electronics for 20 years, the last 10years in Mexico, Central America and China. I can do something about it! The money saved goes towards the next amp project!
What if at the same time I could:
- Improve performance?
- Offer adjustable input voltages on PT's?
- Offer useful tweakable input impedances on my OT's?
The '08 lot of OT's have been developed with US source wire, tape, laminations and cases. I've only scrimped on the labor and the profit margin.
Matt Sespaniak
Musical Power Supplies Inc.
CURRENT OFFERINGS:
| OT8SE | Single Ended Output Xfmr 5W to 8W up to 45mADC |
| OT10SE | Single Ended Output Xfmr 8W to 12W up to 60mADC |
| OT20SE | Single Ended Output Xfmr 12W to 20W up to 60mADC |
Push Pull Output Xfmr 15W to 22W | |
Push Pull Output Xfmr 25W to 40W | |
| PT190 | 120Vac x 190-0-190V PT with 5V and 6.3V Filament Winds 150mADC BUY |
| PT275 | 120Vac x 275-0-275 PT with 5V and 6.3V Filament Winds 120mADC BUY |
| OT12SE | 11/2/07- Sold Out- Try out the new OT10SE Single Ended 8-12W Output Transformer, EI87 Gapped |
| OT18PP | 06/12/08- Sold Out Try out the new OT15PP Push-Pull 18 to 22 W Output Transformer EI87 |
| PT325 | 11/2/07 Sold Out |
| PT285 | 06/12/08- Sold Out |
Construction:
- High Permiability 29M6 EI Laminations
- Nylon Bobbins- Fully isolated mains winding on PT
- High Temperature Magnet Wire
- Stainless Steel hardware
- 6"+ UL1015 Lead Wire
- Classic Military Grade lead assembly techniques
- 1000Vac HighPot tested 100%
- Interleaved windings on OT's for and full audio response.
Research and Design:
This is really the hobby part of the operation. I always have a couple of what-if's in my email box. Projects in the last year included:
- 25W SE OT at 1200 Ohms
- OT20SE variant with 4K Ohm input
- (3) different "1Watt" Space Charge OT's
- PT for an Amp-in-case replacement
- 1st 220/240V PT285
- 40W Push-Pull for an OEM
- 50W OT for an OEM
Basically if I have the materials I'll look at interesting needs. - 50mA and 90mA Chokes
The new supplier in Central America opens up a slew of design opportunities for MPS.
A slightly larger universal PT is on the bench. There'll be an int'l power version as well as a N American one.
Designs for HiFi-ish SE and OT are kicking around the "utilty Xfmr research kitchen" as well. There seem to be a lot of dumpster diving HiFi folks out there fixing up classic stereos.