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power amp

  1. bimasta

    PLUG-IN VS DIRECT SOLDER CONNECTIONS

    I picked up a B&K ST-1400/II power amp at a GW for $40. A score, in very good shape, 125W into 8 ohms, 165W into 4 ohms, good quality parts. Works fine, has a very good basic sound— but not great. I’d describe it as warm, musical, and “mushy” — smoothed off like a very old tube amp: lack of...
  2. R

    No power to Marantz 1200

    I recently pulled a vintage Marantz 1200 out of storage. Unit takes a while to power on (a few minutes sometimes) but eventually works. Drives Infinity K8's to moderate volume ( I live in an apartment) , phono section works fine, and headphone is fabulous with HD600s However, the other day...
  3. N

    I need help. Proper gauge usage.

    I am wondering what is the proper gauge I am to use for 85' to 115' wire spans. I am running a 7.2 / 9.2 setup in my custom landscaped backyard. 12gauge or 14 gauge? I was also wondering 8ohm or 6ohm, which is better for my reciever? I am running Kicker6000 outdoor speakers. They are rated at...
    • Noiseviol8tn
    • Thread
    • 12gauge or 14gauge amplifier classes correct ohms gauge of wire power amp speaker placement speaker wire wattages
    • Replies: 1
    • Forum: Speakers
  4. HiFiAaron

    Carver TFM-45 Problem

    I was recently offered a Carver TFM-45 for under $100. The right side meter bounces all the time. I do not know what it does while its hooked up to a speaker. When you turn it up and down it changes the speed of the bouncing. I am curious if anyone might know what the problem may be and how hard...
    • HiFiAaron
    • Thread
    • 45 amp carver issues meter power amp power amp repair problem tfm tfm-45
    • Replies: 1
    • Forum: Solid State
  5. BHaines

    Kenwood KR-9400 LOUD poping noise left channel

    Would appreciate some help on this one... Just moved to my new house, setting up my stereo room, turn on my KR-9400 and BOOM! Massive pops/cracks coming only from the left channel. Took it about 15 seconds to start after I first turned the receiver on. Happens with volume all the way down...
    • BHaines
    • Thread
    • capacitor kenwood kenwood kr-9400 pops and cracks power amp transistor replacement
    • Replies: 3
    • Forum: Solid State
  6. MadcapLaughs

    McIntosh MC2100 a worthy upgrade?

    Hi there, Any idea if I should pull the trigger on purchasing a mc2100 power amp today? More specifically would that amp's seperate power supply at 110wpc be a serious upgrade to the power amp section on my Yamaha A1 integrated amp(70wpc)? I know that the Yamaha is considered as great amp on...
  7. G

    Marantz Biamp Question

    Hi all, This is my first post, but I have followed the forum for a bit. I own a Marantz SR6007 and a pair of B&W 603 S2s currently in a biamp setup. Overall, I am running a 5.2 setup. I have the marantz in biamp mode where the surround backs are powering the tweaters of the B&W 603s and the...
  8. Nac458

    Marantz 170DC Offset, Help!

    Hey all, I've just recently completed a complete re-cap and restoration of a Marantz 170DC. I received the unit in non-working condition. The entire right channel amplifier was disassembled and the output transistors had been removed as they were burned/shorted. I went in and replaced...
  9. CoryS06

    Carver PM-350.

    Hello everyone. I'm new to the forum. Been wanting to get a Power Amp that was really good and I think I just found one. I just purchased a Carver PM 350 online and I was wanting to know if any of you have had any experience with this amp or any other Carver products. Thanks for any feedback...
  10. Richs_Trains

    A Few Questions Please

    Hey All, The last unit I worked on taught me a lot as it was the first one that came DOA and I was able to bring back. I have a few questions to better my understanding: People refer to the 'main rails' quite often, what and where are they usually located. This unit (Marantz 4230) lit the DBT...
    • Richs_Trains
    • Thread
    • filter cap main rail marantz power amp rectifier resistors
    • Replies: 4
    • Forum: Marantz Audio
  11. ScooterMcTav

    Used Affordable Power Amp Suggestions

    Hi All, In tweaking with my McIntosh MA-6100, one thought I had was to try using it as a power amp as it is just missing "something". So, I thought hooking it up to something with some digital ins might not be a bad thing either. The eBay Gods were good to me, and I was able to reasonably...
    • ScooterMcTav
    • Thread
    • adcom hafler integra marantz onkyo power amp rotel
    • Replies: 36
    • Forum: Solid State
  12. Cody AOC

    Is this a good site for upgrading caps in a vintage receiver?

    So I been needing to replace the caps in my vintage receiver it has 55 caps and I found a site that has full kits of the caps to upgrade them with should I go with this site? http://www.audio-high-store.com/
    • Cody AOC
    • Thread
    • amp diy fix power power amp receiver sansui site vintage amp
    • Replies: 31
    • Forum: DIY
  13. phatterplatter

    Marantz 250...too much DC on output and no signal

    Hello techies I have a clients 250 here. One side is fine and adjusts per spec The other side has over 4.00 DC on it and I've replaced a number of the smaller lytic caps and the first pre-driver transistor. It still has over 4.00 vdc out . The power transistors are ok with the exception that...
  14. The Gryphon

    Rotel Amplifier Fan Club

    I notice that Rotel amps are not have their merits discussed here on AK .....so I thought it was time to start a thread I run a Rotem RC 960 BX pre amp and two mono block RB 850 ( bridged ) and have done for around 25 years I love the sound , it is clear detailed and very neutral to my...
    • The Gryphon
    • Thread
    • amplifer fan club integrated amplifier power amp power amp heat rotel solid state
    • Replies: 21
    • Forum: Solid State
  15. Rob DeFries

    Project 5500. Big fun or ....?

    A couple of years ago, a friend of mine came up with an old Pioneer amp. It was a SA-5500II. "It only hums" he said, "maybe you've got some purpose for it?" Ofcourse. But then, after I opened it up, I saw the two tiny STK like modules. Pioneers own little crap circuits. I closed it and dumped...
  16. Richs_Trains

    Marantz 2220b Bias Questions

    Hello all, My saga of the 2220b goes on. I posted in another thread the power amp PC from the 2220b I was trying to recap, it showed some very questionable factory connections and foils. After I installed the new caps and tried to adjust the amp, I could get everything right except the bias...
  17. Richs_Trains

    Marantz 2220B quick questions

    Hello, I tried to recap a 2220b and found that the power amp foils were just terrible. I went ahead and recapped the board and when I re-installed it I could not get it to bias correctly. I tried to re-flow the joints I made and still had no luck. I purchased a used 2220b amp board with the...
  18. TellMeWhy

    Best power amp for under $250 used?

    Top choices, vintage or otherwise, excelling at low volume clarity and soundstage and able to drive current demanding relatively inefficient speakers (Kef 103.2 Reference, 8 ohm, 86 dB/1m). 60 watts and above preferred. Am planning to use a recapped Marantz 2230 as a pre. Class A? Mosfet? Thanks...
  19. lakegville

    Crown Studio Reference 1 Advise...Anyone?

    Hi there all...I did a thread a while back about Crown Power amps for home use and someone told me about a rare Crown amp called the studio reference. I have found a couple for sale as of recent. I have not made the decision yet to purchase but am leaning toward going thru with the deal. They...
  20. skynetyt

    Kenwood L-07M (Mk1) blows fuse

    Just moved the post from conversation to a new thread. So I have got a pair of beautiful Kenwood L-07M (Mark 1) amps. One is in good shape, but another – unfortunately dead. First I checked the fuse – 250v 5A blew (as I could see, somebody tried to replace it, but put a wrong one for 2.5A). I...
    • skynetyt
    • Thread
    • kenwood l-07m l-07m l-07mi power amp x07-1520-10
    • Replies: 15
    • Forum: Solid State
  21. B

    REPLACING CAPACITORS ON MARANTZ 140 POWER AMP

    Hello guys, i would really appreciate any advice regarding my attempt to replace the big capacitor on Marantz 140 with 2 x 10 000uF/63V instead 13 000uF that comes from the factory.Since that dual 13 000uf isn't available i have 2 new audiograde caps Matushita 10 000uF gold audiograde.Will the...
    • Bogdan1986
    • Thread
    • capacitors diy help marantz 140 newbie power amp
    • Replies: 8
    • Forum: DIY
  22. D

    High Frequency "Glare" or "Grainy" Texture - Help me Isolate it

    I just took delivery of a new Emotiva XPA-2 Gen 2 amplifier. Emotiva had a sale on these big amplifiers and I thought I would go ahead and get the matching amp to the XSP-1 Gen2 preamp. I have been using a Crown XLS-2000 to drive my Thiel CS3.5 speakers with pretty good results. I though the...
  23. bushwood4568

    Sony 55es or Kenwood M1

    Someone on craigslist has a Sony 55es and a Kenwood M1. I am wondering what everyone here thinks of them, and which one is better (build quality, longevity, and sound quality). I will test both if I make the 3 hour drive to get them and choose which one I like best. He also has a lot of preamps...
    • bushwood4568
    • Thread
    • 55es kenwood kenwoodbasic kenwoodm1 power amp poweramplifier preamp sony sony 55es
    • Replies: 7
    • Forum: Solid State
  24. lakegville

    Crown Power Amp Advise

    Hi everyone. I may be straying off the beaten path here a little but think i would like to try a big Crown Power Amp....one that would kick out at least 600 wpc @ 8 ohms stereo.........maybe as many as 1,500. This would not be for PA or professional just for a 2ch home system. I currently have...
  25. greenflash

    Connecting Old Yamaha CR-1020 to Yamaha RXV-671 (7.1)

    Hi guys, I've been wracking my brain to try to figure this out (found some info in AK that served as basis). I basically have a stereo Yamaha CR-1020 and I want to use it together with a RXV-671 multichannel receiver. Main goal is, to share the 7.1 speakers set (the fronts only, of course) with...
    • greenflash
    • Thread
    • 5.1 and stereo connecting two amps interconnect power amp share speakers
    • Replies: 6
    • Forum: Solid State
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