PrimaLuna Dialogue Premium Preamplifier. DESTROYS SPEAKERS!!



A few months ago, bought TWO of the above mentioned preamps. ( I have 2 stereo systems)
Within 6 weeks of the purchase, the power supply of my speakers burns out!
I purchase and replace the power supply.
Three days later, the second newly replaced power supply is burnt out!
After much investigative work and heartache, I discover that the Pre amp is the problem.
It is defective and puts out DC. which burns out speakers.
After, testing the second unit, I find that it is defective as well, EXACTLY the same problem.
I return the units to my dealer, who returns them to Prima Lune.

I received a phone call from a Mr. Kevin Deal, big cheese at PrimaLuna.
Told me that the capacitors, on BOTH units had failed and the units were putting out DC.
He even THANKED me, for being a guinea pig, and discovering the flaw in his units.

He offered me a pair of tubes, as "compensation" for my troubles!! What a joker!!

WOW, a pair of tubes for blowing my $30,000. speakers!!

The height of arrogance and total disregard for the consumer of his product.
To all audiophiles, do yourself a favour, STAY AWAY for this brand, unless you want your speakers cooked.

TOTAL lack of quality control, MADE IN CHINA junk, what more needs to be said.


Mr. Deal, WAKE UP, and STOP selling defective products!!


If, you are using PrimaLuna, and your speakers fail, check the amp or pre amp.

George


Montreal, Quebec, Canada.
thorloki
I imagine on many college campuses we would be chastised for wandering into the territory of "macroaggressions"
Don't want to hijack the thread, but I have to agree. DC input protection should be de rigeur for most amps, especially one with such high current you could weld with it.

Also VERY surprised a professional grade amp would not include this.

By the way, my ICEPower amps include all sorts of protection circuits and sound great. :D

Best,

E
DC input protection should be de rigeur for most amps, especially one with such high current you could weld with it.
Hi Erik,

See my earlier posts in this thread. It appears more likely than not that the amp **does** have DC input protection, in the form of 68 uf capacitors in series with its inputs. However, the amp’s specified bandwidth extends down to "< 1 Hz," so there is apparently no protection against the effects of an oscillation it may receive at very low frequencies. And Mr. Deal indicated earlier that an oscillation is suspected.

Regards,
-- Al


I have just found back a letter from another user who reported that a failed capacitor in his PrimaLuna Dialogue preamplifier destroyed a Harbeth SHL5+ speaker. I knew I had it somewhere but it took me a while to retrieve it.