Primaluna Dialogue Premium Integrated driving Magnepan .7 with Bypassed Fuses


Hi everyone,
I am a relatively new audiophile, joined Audiogon 2.5 years ago, and this is my first post. I enjoy reading the forum very much, and would like to say thank you to everyone who has shared their knowledge, wisdom and humor with me. For this my first post I am looking for advice: I have a pair of Magnepan .7 speakers with bypassed tweeter fuses, and I am wondering if I can safely drive them with my Primaluna Dialogue Premium amplifier. The amplifier has 4 ohm speaker connections, and using KT120 tubes in ultralinear mode it produces 43 watts per channel (per specs). What I don't know is how much current it can provide the Maggies which I understand draw a lot of current (I have not seen an impedance curve for the speakers). My listening room (aka living room) is approximately 13' x 16' x 7',  with partially treated walls and corners. The speakers are on the short side about 3.5' from the back wall, I sit about 7.5' away from the speakers, and I listen to music at around 60-65 dB (C-weighted), sometimes peaks in the low 70’s. So my question is: am I taking an unnecessary risk driving the Maggies with the Primaluna? Can I damage the speakers if I play them too loud? In case you are wondering, after I bypassed the tweeter fuse and attenuator connections, the speakers sounder much clearer and precise to my ears in my room with my system.

 

 

classic8

@classic8 

40 watts is enough, but if you want to make the Maggie’s sing, hook up a subwoofer or two and set the crossover’s to sixty-eighty hertz.  By removing the bottom, 40 watts will make them rock!😁

All the best.

@classic8 : You’re welcome! To be clear… I used the RM-10 with the Maggies without them with no problem, but chose to buy them to make the amp/speaker synergy a happier one. Also, the designer of the amplifier (Roger Modjeski) was a strong advocate for “light loading” his (& other) tube amps. That would’ve been impossible without the autoformers. 😉

@curiousjim: Thank you for the suggestion. I have read that many Maggie users add one or more subwoofers. I am assuming you are suggesting adding an active crossover, or a subwoofer that has one built in?

@classic8 

Yep. I have Acoustat Model X speakers with 40 watt servo amps and with fresh tubes they play louder than I’d ever play them.  And while they will play down to 30 hz, because of their design they don’t have the they don’t have the umph and they draw most of the power. So I originally built pairs of subs with an active crossover and now use an SVS 2000 Pro subwoofer.  The software is great for dialing it in and my tubes aren’t driven as hard. It’s a win win for me.