Grateful Dead Music Forum

A place to talk about the music of the Grateful Dead 

 #135359  by Searing75
 Sun Jan 05, 2014 2:45 pm
Just wanted to say that this amp is awesome! It is 4 pounds, 1 rack space, and sounds great! No lie! I didn't believe it at first, was very skeptical, but I am in heaven with it. I run an SMS into it, and bridge it for 200 watts into a K120. Again, sounds amazing! it is class A/B, and really simple to use.

4 POUNDS!!!!!!!!!!!!!!! :-)
 #135369  by Jon S.
 Mon Jan 06, 2014 4:14 am
I also run my SMS into one into a pair of 8 ohm JBLs (one K120, one E120). The SMS + DCM200L + Gator rack together weigh about 14 lbs. At first I missed my Roctron Velocity 300 but having changed the V1 preamp tube in the SMS, I'm now very happy with the rig's tone.

 #135394  by Jon S.
 Mon Jan 06, 2014 5:52 pm
Searing, is the spacing on the bridge banana plug inputs correct to take a standard type dual plug like this one?

 #135396  by Jon S.
 Mon Jan 06, 2014 6:46 pm
Excellent, I'll order one tonight (to try mine bridged into a single K120, too). :smile:
 #135398  by Staemius
 Mon Jan 06, 2014 7:19 pm
Yeah, I've been interested in this one as well! Bridging at 200 watts? Hehe, you guys play loud! I've been switching between a Mosvalve 962 or MC-50 - would love to hear comparisons with these or other amps - or clips?
 #135400  by Jon S.
 Tue Jan 07, 2014 4:19 am
For me, the bridging would not be to gain volume but rather to safely run into a single 8 ohm cab.
 #135402  by Mr.Burns
 Tue Jan 07, 2014 6:01 am
From's DCM200L page:

- Frequency Response: +0/-5 dB 20 Hz - 20 kHz
- THD 20-20kHz < 0.5%, (8Ω typical) < 0.05%
- Output Topology: CLASS D
- Power Supply: Switchmode
- Damping Factor: >400
- Sensitivity (@ 8Ω): 1.4 Vrms
etc., etc.

I'm confused here. It says here that the amp's output topology is class D but I did find another reference to this amp having class A/B topology on Carvin's site. As I understand it, D has more inherent THD but is more efficient/runs cooler? I guess my question is which class sounds better? And which class is this amplifier?!
 #135403  by Searing75
 Tue Jan 07, 2014 6:59 am
Strange?? I could have sworn it was A/B?? It does say D in some places, but in others describes it as A/B???? Fuck it! It sounds Class kick Ass!!!!!!!!!!!!!!!
 #135404  by Mr.Burns
 Tue Jan 07, 2014 8:44 am
Any chance of someone posting an example of this amp in action?
 #135405  by Searing75
 Tue Jan 07, 2014 8:47 am
I will have my girlfriend help me to get some audio up here using the Carvin later this evening.
 #135435  by PurpleTrails
 Tue Jan 07, 2014 8:00 pm
At that weight it has to be class D. A 100W class A/B or A is going to weigh more than that because the power supply needs to be much larger and hence heavier because they run much less efficiently.
 #135465  by TeeJay
 Wed Jan 08, 2014 7:38 pm
Forgive me if this is a stupid question but how would you connect a preamp with an 1/4 unbalanced out into this Carvin amp that appears to only have the XLR balanced inputs?
 #135474  by Searing75
 Thu Jan 09, 2014 6:15 am

The amp has 1/4" inputs. There are two inbetween the XLR inputs. The ground lift and parralled are the switched above. Look closely at the pic of the back.
 #135554  by TeeJay
 Sat Jan 11, 2014 5:48 pm
It doesn't matter if the output from the pre is unbalanced and the inputs on the power amp are balanced?