traderyoda wrote: > Here's what I've done so far. I'm using the following hookups. Signal is > Analog RCA from the SB Classic to the Lepai. Klipsch satellites are RCA > connected to the Lepai using its volume control. The SB is set to 100%. > The Klipsch sub is 5.7 ohm and the each satellite is showing around 4.3 > ohm. > > This is what I did so far: > > - Switched out the Lepai - no difference; both Lepai amps perform the > same. > - Hooked up another dc power supply (not my hacked laptop charger) > rated at 19vdc and 3.9amps - no difference > - Hooked up a digital DC power supply fixed at 22vdc (the max rated > voltage for the Lepai) with floating current so the amp could draw what > it needed - no difference > - Took the SB out of the system and replaced it with a Yamaha radio for > the source - music was louder but still not much more so - maxed out it > about a background comfortable level. > - Hooked the Klipsch satellites to a Sony AVR along with the subwoofer > (using the mono sub output to one sub RCA input - tried both right and > left) with input from the SB to the CD in channel - I can crank up the > volume but the sounds is simply awful (muffled and distorted and the > woofer just chuffs along incoherently. > > Here's what I think I've learned. > > - No issue with my SB Classic - it seems to be working fine. > - No issue with my hacked laptop charger - it's putting out precisely > 19vdc and will ramp up current when demanded (I hooked it to a light > strip to check). > - I can't test anything with the Sony AVR since it wants at least 8 > ohms and can't do anything with these low ohm speakers. > - The Lepai needs more gain to work with - when the setup was connected > to my digital power supply it never pulled more than .4 amps. When you > turn the Lepai's volume knob from zero it will amplify about half way up > the dial and beyond that there's no increase in sound. > > Here's where I think this is headed - two options: > > 1 - Buy a good DAC with a pre-amp stage to boost the gain. > 2 - Pitch the whole Klipsch system and replace it with 8 ohm satellites > and a real sub. > 3 - Just buy another K. Promedia setup and stop getting fancy. > > By the way, the reason I went through all of this is because I made the > fundamental mistake of wiring the Klipsch system into my walls. That was > a great strategy until it failed. It's in a small reading/listening room > which is a great place to chill but doesn't need a lot of punch. I just > didn't want to tear everything out and was looking for a quick fix I > could pull off with the existing wiring. Lesson learned. > > The SB is a fantastic device - anyone with a Classic or Touch that has a > nice, small-area solution I'm all ears.
when you mention that the sats are "showing around 4.3 ohm" are you measuring them? Speaker impedance is frequency dependent, you can't measure it with an ohm meter. In fact, a speaker on it's own is practically a DC short circuit, as it is just a coil of wire. It is true that the wire has a resistance per unit length. I wouldn't worry about the receiver wanting 8 ohms, and you giving it, say 4. You will just be making it work harder. In fact if you use the A+B speaker setting with 2 pair of 8 ohm speakers, the receiver is seeing 4 ohms. It still sounds to me that there is an active circuit in the satellites in between the lepai and the actual speaker itself (if its a single mid/high driver). If it is a little two way (separate high and mid) and there is some sort of active circuit in between the sat "in" and the actual sat speaker drivers. The fact that the klipsch system accepted the audio source into the sattelites (which have a volume control) and then sent the bass signal to the old sub, makes me think this is the case. 33267 ok, I just found the manual. This is different from the altec lansing system I messed up. I can see why you would think this would work. each satelite has actual speaker hookups, and one of the sats has a preamp. We are assuming that a 2.1 amp is in the sub box. with your hookup you are assuming that you don't need the path through the sat preamp. When you say low volume, it is both the sub and the sat volumes that are low? Is there any difference in the sound between the sat with the preamp and the one without? Have you completely disconnected the sat preamp cables (only speaker wires hooked to sats)? If you hookup the sb3 to just the lirpa, do you get good clean bass volume with the gain turned up? In other words, the klisch out of the picture) Jim Jim +-------------------------------------------------------------------+ |Filename: 2021-02-06 16_34_15-ProMedia21OwnersManualRev2012_635042122162050000.pdf.png| |Download: http://forums.slimdevices.com/attachment.php?attachmentid=33267| +-------------------------------------------------------------------+ ------------------------------------------------------------------------ Redrum's Profile: http://forums.slimdevices.com/member.php?userid=33806 View this thread: http://forums.slimdevices.com/showthread.php?t=113854 _______________________________________________ discuss mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/discuss
