2-Channel Home Audio

Talk about stereo amp and speaker matching here.

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  • Recent Posts

    • Your better off keeping the L & R together. So you can have same output and same sound. Some amps can make your speakers sound a little warmer or brighter. I have my L & R on my power amp since I used them for music everyday. I also have my surround on amp. So my AVR is powering the center, surround backs and presence. Keeps AVR much cooler.


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    • Very good deal. Do you still have your surround speakers?

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    • Where exactly is the distortion coming from?  Any specific pair of speakers?  Might be best to isolate that first.  And/or, what type of room do you have them set up in?  Are there a lot of reflective surfaces such as wood/tile floors, glass windows/doors, etc?  It is possible that the distortion could be coming from the receiver as you drive it harder, but possibly want to troubleshoot other sources first.
    • You interpreted the attached photo correctly, but crossovers are not "brick walls" -- the transition between speakers is gradual, with some overlap.   Several voice fundamental frequencies are below 500Hz, so the inner woofers probably need help from the outer woofers in reproducing voice.  The human voice range is from below 100 Hz all the way up to 16,000 Hz, for overtones and the articulation of fricative consonants, etc. 
    • First off, I look forward to reading through the forums.  I wasn't able to view topics until I registered.  I've been on here multiple times (reading and dreaming) since.   Background (I'll try and keep it short): I first heard Klipsch speakers at my brother-in-law's house.  He had just purchased a 5.1 system with Quintet speakers and a Klipsch sub.  I wasn't so much focused on the stage, semblance, etc. but more the pure volume and clarity these speakers had.  It started at an early age, but I like my music/movies LOUD (drives my wife crazy - Ha!).  Most speakers I've owned (all low-fi) couldn't pump out the volume without distortion like the Quintet system was doing.  From that point forward, I wanted to own Klipsch speakers.  Fast forward a few years, and I'm currently working on house plans to custom build a house.  This house will undoubtedly have a dedicated theater/music room.  How big?  I'm not sure, yet.  The cool thing is it allowed me to start piecing together a surround sound setup.  At this point in time, I definitely have to adhere to a budget.  All of our free money is going towards building the house.  So, I've been scouring Craigslist and Goodwill until I've put together my first 5.1 system.  Over time, I plan to keep scouring the web and will replace speakers/receivers as I find better ones.   Mains:  KG5.2 ($250 on Craiglist) Center:  RC25 ($80 with the RB25's on Craigslist) Surrounds:  RB25 Sub:  Proficient Audio Systems S12 ($52 on Shopgoodwill.com) Receiver:  Onkyo TX-SR607 ($40 on Shopgoodwill.com)   I think this system sounds really good with music/movies.  I really don't have to use the sub for a majority of what I watch/listen to.  It's crazy how much bass comes from one active 10" woofer.  The question I have is regarding higher volume.  I can push the volume to a point where I hear distortion.  I mean, it's loud, but it's not LOUD.  I may be expecting the speakers to do something they're not made to do, but all of the reviews I've read say these things will "boogie" when you want them to.  Honestly, I want speakers that will go loud enough that I have to stop the volume increase due to listening discomfort rather than me stopping the volume increase based on distortion.  The KG5.2's are completely stock in regards to diaphragms and crossovers.  Would titanium tweeter diaphragms fix this issue?  Do I need a better receiver (I had an older Kenwood hooked up to them at one time and noticed the distortion, as well)?  Should I keep an eye out for different Klipsch speakers that would better satisfy my quest for volume?  I appreciate any insight you guys can give me.
    • Back working on these 6V6PP mono amplifiers again. After listening to them (last spring or whenever) with the circuit used and the Admiral output transformers, the GF and I weren't very impressed. So I swapped back in the original Magnavox output transformers, and adjusted for feedback the conventional way. Better, but not by much.   Most the issue is hash/hiss noises. These original Magnavox 6V6 PP console amplifiers had shields for the driver tube. One had a 6AN8 driver tube with a shield. The other had a 12AX7 which had a strange lead cover for it...a type of shield.   So I have one amplifier with a new socket and shield, amp "Y"...another thing is I had each plate of 12AX7 up around 285 volts for each amp, with a cathode voltage of 2.3 volts. Probably a bit excessive. I also reworked the driver circuit using the Gillespie driver circuit for the Magnavox 9300. I may have to noodle with a couple values for the feedback and HF compensation for the 12AX7 when I look on a scope.   The Gillespie driver/paraphase (floating) circuit uses a higher value plate resistor for 12AX7 (actually 6EU7, same thing but 6.3 volts). That dropped the plate voltage down to 170-173 volts, with cathode voltage at 1.1-1.5 volts. That should help with noise I would guess. The original Magnavox circuit for 164BA has two 100 ohm resistors forming a virtual CT/divider, and the voltage is taken from the center-tap and applied at the cathodes of 6V6. I omitted this with the Dynaco circuit I copied. With amp "Y", and went ahead put the divider back in, with the voltage from the CT to the cathodes of 6V6.   If I recall, this same technique is used with my Maynard 6AQ5 SEPP amplifier.   Mike
    • Afternoon gang   Impending rain yet again. Hobby Lobby is fun, lot of ideas tend to jump into your brain wile trying to remember why you went there Sent wife unit off to feed the Indians. Back to the Rv door project.   Pot is Perkin, Duggans is-a-waitin