Musical fidelity p270 amplifier research
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Hi Marcus, I'd leave the LM in there. If you replace it with another, you may need to redo the HF compensation. I was never impressed with these toasters. There is not enough current to charge and discharge the gate properly. The driver stage is not well designed. This amp "is what it is".
Swapping OPamp. Or have you made a further step in high end growing to musical reality? The P uses the slimmed down circuit of the P mk 1. As used in the Dr T mK 2 If you do not have that circuit e mail me. It is an excellant circuit and I prefer it to the P circuit with an extra stage in. It produces a clearer sound but uses a lower bias. On the p and PMk 1 the LM is the input pair. On the P Mk 2 the input pair in the lm is disabled and replaced by discrete transistors.
I think you will find the lm sounds very good in its own right as it is a high speed op amp. I have still to find an advantage in changing it out - and I have tried a lot of alternatives.
For the burned out voltage drop resistors on the rails I have swapped the original 5w resistors for 25w resistors and the temperature is just ok then. Later models use a pass transistor instead of a resistor to eliminate this problem. I find that changing out all the circuit board capacitors makes the big change with this circuit. Also increasing the value of the power supply caps to about 40,uf per rail makes a big difference.
If you do that add a thermistor in the transformer incoming supply to avoid start up surges. Hi Marcus, Quote:. Musical Fidelity P Hello all, I have a Musical Fidelity P and would like to know if anyone can provide the spec for me as I have misplaced my manual and have been asked for the information by a guy who is repairing it. Can anyone help? Many thanks. Originally Posted by ianfromnotts. Find More Posts by tiefbassuebertr. Originally Posted by tiefbassuebertr. I am looking for an exact circuit description so as calculation rules of this topology.
I haven't see similar topology by other commercial brands, and even not by diy projects. What is here very special particularly benefits compare to others in respect to the sonic transmission??
Find More Posts by Evilbat. If you did, I would watch for dc offset, use a varied or lightbulb tester on startup. Have you done other modifications, ie power supply? BB code is On. Smilies are On. Forum Rules.
All times are GMT. The time now is PM. Resources saved on this page: MySQL Musical Fidelity P Power Amp. User Name. Stay logged in? Mark Forums Read. Solid State Talk all about solid state amplification. Please consider donating to help us continue to serve you. Page 7 of 8. Thread Tools. View Public Profile. Send a private message to anatech. Find More Posts by anatech. Send a private message to maggusch.
Find More Posts by maggusch. Send a private message to AMV8. Hi Marcus, Quote: OK Musical Fidelity P Hello all, I have a Musical Fidelity P and would like to know if anyone can provide the spec for me as I have misplaced my manual and have been asked for the information by a guy who is repairing it. Is this any help? Attached Images. Send a private message to ianfromnotts. Find More Posts by ianfromnotts.
Quote: Originally Posted by ianfromnotts Is this any help? Send a private message to tiefbassuebertr. Visit tiefbassuebertr's homepage! Quote: Originally Posted by tiefbassuebertr I am looking for an exact circuit description so as calculation rules of this topology. Send a private message to Evilbat.
Visit Evilbat's homepage! Send a private message to phase. Find More Posts by phase. Posting Rules. Similar Threads. Musical Fidelity e power amp trannys help :. Musical Fidelity P Blown Transistors.
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Musical Fidelity M6prx Manually
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Musical Fidelity
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Download Now Musical Fidelity P170 Manual Dexterity: PDF format
Power output. THD 0. Frequency response. Upon embarking on this review I was shocked to discover that the Musical Fidelity M6 i is a dual mono integrated amp, literally two mono integrated amps in one chassis! My amazement increased when I learned that Antony Michaelson of Musical Fidelity has been designing such amps for decades.
MUSICAL FIDELITY P270 Power amplifier
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Bryston 3 or 4b v Musical Fidelity P270 v Chord SPM 1000b
Musical Fidelity represents the best of good quality hi-fi. Built on over thirty years of audio expertise, we design and engineer powerful hi-fi separates that deliver exceptional sound, high technical performance, excellent value for money and a superb build quality. Interesting eBay auctions.
Review: Ken Kessler
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Below is an extract of a thread on a DYI forum regarding swapping. Musical Fidelity. Direct Deposit. Very Good Condition.
You are wrong. Let's discuss this. Email me at PM.