Magnepan LRS+ resistors on the tweeters… which?

@yyzsantabarbara  Thanks! I cancelled my order for the Risers after discovering that I had much better integration with my subwoofer with the LRS+ on the floor. I tried to buy the jumpers after cancelling, but he wouldn't sell.

@yyzsantabarbara ​@audiofilo123  Again, I am really surprised that you both find the LRS+ to be hot in the treble. I haven't tried other amps with them but my AGD amp with my Backert line stage (PSVANE Horizon 12au7 AT) is absolutely sublime. Detailed, yes! Hard treble? Not at all. And like many of you I am very sensitive to too much energy in the upper mid on up. The only thing I have done to the LRS+ is replace the fuse with a ceramic fuse, and tilt them forward by about an inch. 

The LRS+ was slightly bright. A bit more than the KEF LS50 Meta that it replaced. Nothing that really bothered me, but I used a warm DAC with it.

The Schitt Yggi+ Less Is More DAC goes extremely well with the LRS+.

You can ALWAYS use resistors of a higher wattage value here. Just don’t go for a lower wattage. A higher wattage resistor will better dissipate the heat.

The downside it that you typically pay more and if the extra "capacity" is not necessary, why pay for it? They can also be larger.

The Mills 12-watters are just their "better" version of most everyone else’s 10-watter. It’s too bad you can’t get them for reasonable coin in your parts.

Something else to think about...,

If you can find resistors that have a bit of inductance, they will change the "character" of the highs, and you may like the results. I use modified Heil AMTs with Mills resistors, but at one point I came across a pair of 20 ohm, 1% TRW 7.5 watt resistors. I wanted to increase the volume of the Heil by ~1/2 dB and had 3.2 ohms in series. The TRW resistors reduced this to 2.75 ohms and I picked up the ~1/2 dB. But the Heils lost some of their "edge/graininess".

When I checked the TRWs, I found they had 0.007mH of inductance which seems to tame this edge, at least to some extent.

BTW, one would think that changing the value of the resistors would also change the slope of the crossover.  However, in the case of a 2nd order, or higher, crossover, resistors placed before the "initial" capacitor will change the volume with negligible effect on the crossover point or slope.  I actually take advantage of this phenomenon in my crossovers.

@toddalin, thanks a lot for the suggestions and detailed information.

Perhaps I can buy the Mills resistors in the UK :)

Hiya,

LRS+ user here from EU. These are the tweeks I made with them:

- my friend made me custom made very sturdy stands very similar to Magnarisers. I use some schematics from some American who made them and they work excellent. I still have schematics pics on my PC at home if needed. I can not find his webpage at the moment to share.

- I added 1R Mills 12W resistor - i bought them at Hifi Collective UK. You can also get them from some distributor from Poland but they are about 20€ so a bit more expensive. Mills are good and they give a bit of sweetness, warmth and also put the edge from the highs. You might also try 1R2, 1R5 as you have now or maybe even try Pathaudio resistors if you really want to experiment and see if they better the Mills. But they are expensive about 35€ a piece. I’m also curious a little bit about that to play with different values of resistors up or down and see what it brings or take away. But this is a bit expensive if you really want to try different combos.

- I bought high purity copper rod from the Aliexpress to bypass the fuse. And they cut me in a size that I needed. This link was actually made for me as I requested 32mm long ones and they fit perfectly :) https://www.aliexpress.com/item/1005005702709030.html?spm=a2g0o.order_list.order_list_main.25.2c291802BTVv5M . I gained more clarity with that, but yeah do that if you know what you are doing.

- I changed the speaker wires for these which also made much smoother top end. https://www.aliexpress.com/item/1005004369101541.html?spm=a2g0o.order_list.order_list_main.55.2c291802BTVv5M

In my opinion the best speaker wires I ever had no matter the price. Bafore I had also some very expensive brand name so I sold those. You can wait for 11.11. sales on AE and they will be discounted for sure for about 1/3 less.

Each of these tweeks brought me bit to make LRS+ almost a perfect speakers.

BTW I drive them with Gryphon Callisto 2200 and for DAC I use Denafrips Ares II. They are supported with two REL B2 subs which they give a missing bottom end. I like them and I listen to the music the most even though in the past I had much more expensive speakers.

If you want to make a bit more full boddied presentation add some Cardas Golden Cross XLR or RCA cable in the game. But that is already a bit more costly and you need to seek for them on the second hand market as they are not produced anymore.

With best wishes, Davor.