CLSIIZs need power!New 600 watt amp makes speakers really sound good!

[raanan17]

I was running my CLSIIZs with a 300WPC SDS-470C from CLASSDAUDIO,and it sounded better than many other 300 watt per channel transistor amps.Decided to try a bridged 4 channel amp ,also by CLASSDAUDIO that delivers 600W into 8 and 1200W into 4 ohms.Sound is now much fuller,owing to extended frequency response.

 

[bluenote56]

Although I once attended an audition with 2 Kondo Ongakus hooked to a 2z, power is key with the CLS2z. These single ended tubes showed an impressive performance even with 4x27 watts, but I would not recommend this. Under these conditions I would be scared by tube lifetime. Those 211s are really expensive....

I achieved the biggest step forward by bi-amping my CLS2z with 2 professional Tannoy TA600 stereo amps. 300W at 8 ohms each. Best performance I ever had im my listening room.

Johann

 

[JonFo]

...
I achieved the biggest step forward by bi-amping my CLS2z with 2 professional Tannoy TA600 stereo amps. 300W at 8 ohms each. Best performance I ever had im my listening room.

Johann

I think you meant you used two amps, each in bridged mode (600w @8Ohms) correct?

One cannot bi-amp a single panel

To hear the best a CLS can do, I'd recommend a pair of Sanders ESL Monoblock amps, those will deliver the current needed to really move those big panels.

 

[bluenote56]

I think you meant you used two amps, each in bridged mode (600w @8Ohms) correct?
One cannot bi-amp a single panel

Oh yes, its definitely possible to bi-amp a CLS2z. For making the CLS2 an easier load, there are 2 step-up transformers and even a crossover board. By removing 2 jumper wires and providing a second set of binding posts (or soldering speaker cables directly to the board) you will be able to bi-wire and even bi-amp a CLS2z. Got detailed instructions from ML when I did this modification. Worked fine for several years. A very big improvement !

Johann

 

[Brad225]

Could you go into a bit more detail as to how this works. With 3 wires to the panels one to each sator and one to the mylar I don't understand how the biamp theory is possible.

But then there are any number of things I don't understand.

 

[roberto]

Hola. You can not bypass the input xformer...Happy listening!

 

[bluenote56]

Could you go into a bit more detail as to how this works. With 3 wires to the panels one to each sator and one to the mylar I don't understand how the biamp theory is possible. But then there are any number of things I don't understand.

As I already wrote, the CLS2z has 2 step up transformers and a frequency crossover board. Although the panel itself is connected with those 3 wires mentioned, both transformers are suplied with different signals after the crossover. This is for impedance linearisation. You'll find on the backside of the crossover board 2 wire jumpers that can be removed. The crossover board also provides in total 4 small holes prepared to solder the ends of both speaker cables. So you can connect 4 binding posts or the bare ends of the double speaker cables.

Be assured this works, as I did it in accordance with Jim Power!

Johann

 

[Peter Hogan]

As I already wrote, the CLS2z has 2 step up transformers and a frequency crossover board. Although the panel itself is connected with those 3 wires mentioned, both transformers are suplied with different signals after the crossover. This is for impedance linearisation. You'll find on the backside of the crossover board 2 wire jumpers that can be removed. The crossover board also provides in total 4 small holes prepared to solder the ends of both speaker cables. So you can connect 4 binding posts or the bare ends of the double speaker cables.

Be assured this works, as I did it in accordance with Jim Power!

Johann

I got this back when I had CLSs....might be helpful...you can see the wire 'jumpers' (the two vertical wires on the left of the schematic). Remove those and the two inputs are now seperate.