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amp

  1. artsybob

    US Audio Amplifier

    Hello all. I was at a flea market and spotted a stereo tube amp that was manufactured by a "US Audio Corporation" in Bronx, NY. I had never seen this amp before and thought it might have been a kit, but according to radiomuseum.org this was a factory-built unit...
    • artsybob
    • Thread
    • amp stereo tube amplifier united states audio us audio
    • Replies: 12
    • Forum: Tube Audio
  2. Mørbeck

    Which pre-amp/amp for my Marantz 2230/Ar4ax system

    Hey everyone At the moment I have a Marantz 2230 powering a pair of Acoustic Research AR-4ax. Both are serviced and recapped and sound nicely. I am interested in stepping up the system's game by introducing a pre-amp. I was looking at a defected Luxman LV 113 amp today for a friend and since he...
    • Mørbeck
    • Thread
    • acoustic research ar 4xa amp marantz 2230 pre-amp
    • Replies: 2
    • Forum: Solid State
  3. VintageKCMO

    Hello From Vintage Turntable & Stereo in KCMO!

    Our team at Vintage Turntable & Stereo has been a long time fan of AK and thought we ought to join finally! We are a local shop that offers stereo repair, turntable repair, amp repair and record player repair to locals in the Kansas City, MO area, and we are actually located in a suburb called...
    • VintageKCMO
    • Thread
    • amp kansas city kcmo stereo receiver turntable vintage stereo
    • Replies: 19
    • Forum: Introductions
  4. M

    New or Used MC452 (PLEASE HELP ME PICK!)

    Hey everyone, Time to get an amp. So I have a dilemma. I have an option to get a MC452, either new or used, both prices are crazy. New from authorized seller (personal friend) - $6600 + tax (so about $7100 out the door) Used - 2 years old (has 1 year left on warranty), I know the owner...
  5. W

    Yamaha CR-220 sound dies after a few seconds of sound - Please Help!

    As the title says... The amp turns on and plays music just fine for about 5 seconds, then the sound fizzles out and eventually stops entirely (takes about a second). My DBT doesn't register any shorts, and the same phenomenon occurs no matter what input is used. An important (I think)...
    • W.T. Holt
    • Thread
    • amp cr-220 dies receiver yamaha
    • Replies: 56
    • Forum: Yamaha
  6. ramair02

    No Sound from NAD 7240PE

    Hi all, I'm a total novice with this stuff, so the help is much appreciated. I have a NAD 7240PE from the 80's that was my father's. I commandeered it to set up with a new U-Turn turntable and new Pioneer BS22 speakers. The amp has been in my parent's basement for the last 10 years, but worked...
  7. Dubestar

    Marantz 170 DC Amp has no power on/off how do you properly manage connecting to power?

    Hello, I recently purchased a Marantz 170 DC Amp and have it paired with Marantz 2270 as the preamp. There is no power on/off button on the Amp. The manual says to plug it into the switched AC plug in the back of the Pre Amp (2270) - That works fine, except when I go to turn off the 2270 there...
    • Dubestar
    • Thread
    • 170dc 2270 amp marantz marantz 2270 marantz 2270 as preamp marantz amp popping sound preamp
    • Replies: 3
    • Forum: Marantz Audio
  8. Yester_Year

    Realistic STA-2000D pre-out question, Help please.

    Hello all, I have a question about the receiver. It has pre-outs to go to a amp BUT, in the owners manual it states the following: "Note: the receivers volume, balance, and tone controls are all in the circuit in front of the pre out jacks thus, any external equipment you connect between...
  9. C

    Laptop to Integrated amp's built in DAC (USB to SPDIF) under $200

    Can you help me find solution under $200 to connect Laptop to Integrated amp's built in DAC (USB to SPDIF) I have a Yamaha A-S501 which has a built in DAC. It can decode files up to 24/192. It has COAX and Optical inputs. I want to play up to 24/194 files through my computer. I would like to...
    • cvt01
    • Thread
    • amp dac integrated spdif usb yamaha
    • Replies: 11
    • Forum: DACs
  10. C

    Need help with the correct order to connect an AMP into my system

    I posted this previously in the wrong area... Hello, I'm a new member and could use some advise on what order to connect equipment with the addition of an AMP. The equipment: Sansui G7000 reciever, Bose 901 VI speakers with eq, Pioneer RG9 dynamic processor, Crown DC 300A Series II amp...
  11. J

    Hafler se-120 Bias

    Greetings- I have a Hafler SE-120 amplifier and one side of the amp gets hot even when at Idle. I suspected that the bias needed adjusting. The manual states that the bias should be set at 100ma so I measured the settings according to the service manual and the left channel was spot on at 100ma...
    • jonsand
    • Thread
    • amp bias hafler
    • Replies: 24
    • Forum: DIY
  12. D

    Sears RE-1806 audio issue

    Hello im very new to this form and hope im in the right place. I have this sears re- 1803 amp that has been inperfect condition and just on new years kids got to it as we know kids have a way at breaking everything nothing like a pushed in titanium dome tweeter.. but they pluged a aux cable...
    • Dayton
    • Thread
    • amp bass broken cut help need help sears
    • Replies: 2
    • Forum: Solid State
  13. Connor G

    Sansui AU-11000 Restoration Questions

    I just bought a Sansui AU-11000 online with intentions to restore it and make it as good as new... here are a few photos: I have looked around online about this amplifier and I have seen both very good and also not so good things said about it regarding the sound. Any other opinions about...
  14. lennyfishman

    Pioneer SX-950 No Speaker Output

    Hi All, First time posting here since one of my goals next year is fixing up this old Pioneer SX-950 amp that I received for free a couple months ago. Searching this site I was able to find the repair manual in addition to several other interesting documents and threads. Here is what is working...
  15. mhjmhjones

    Please help me diagnose and/or restore my A10-20 Amp!

    Hello, it's been a long time coming, but I'm finally getting around to fully setting up my sound system. I'm going to be using this amp to power a pair of vintage Acoustic Research AR-3a speakers. First of all, something is going on with the inputs as you can see by all the lights on in this...
    • mhjmhjones
    • Thread
    • a-1020 amp yamaha yamaha amp
    • Replies: 27
    • Forum: Yamaha
  16. T

    BO S 45 TYPE 2 speakers - what amp would match them best?

    Hello, I was given an BO S 45 TYPE 2 pair of speakers from a friend and now I have to find something to play them. From your experience - what amp will be suitable for the nature of the speakers? I havent heard them once since I got them. Just today I received the DIN connectors for the back...
  17. O

    Amp for pair Akai AW-25

    Hello all! I recently inherited a pair of Akai AW-25s. I would love to use them for sentimental reasons, so I am looking into an amp that I could use to drive them. I can't justify spending too much on them ($100 - $200). I'll have them in a relatively small reading room/office. I will also...
    • Oatbak
    • Thread
    • akai akai aw-25 amp aw-25 receiver
    • Replies: 0
    • Forum: Speakers
  18. Richs_Trains

    Marantz 4300... no right channel, literally

    Hey Guys, Picked up a Marantz 4300 and the volume control did not work and it only had the left channel. Found the 'local/remote' switch in remote, so that brought the volume, but upon closer inspection, the right channel plug in amp board is missing. Is there any souce for one of these, or...
  19. Stevie B

    Gec a1800-r receiver

    New guy here Anyone got any info on an old gec a1800-r receiver Picked it up at a charity shop and can't get any info at all on it But it has a light buzzing from the circuit breaker buttons below the speaker terminals Any ideas on a quick fix? Regards stevie
  20. Cody AOC

    How to replace dial pointer light in vintage receiver

    So I have the Sansui 5050 and I want to replace the dial pointer light because i'm getting a restoration done very soon and need to know where can I buy the dial pointer light to replace it I like ebay, amazon, digikey, mouser, and maybe a few others but the light still works but does flicker...
    • Cody AOC
    • Thread
    • amp amplifer audio dial pointer light lights replacement sansui vintage receiver
    • Replies: 3
    • Forum: DIY
  21. T

    Got a pair of old Rectilinear Speakers, now what?

    Hey ya'll I'm new here and don't know what kind of receiver/amp I need for these speakers or if they're even worth it. There's no place on them telling me how much power they need or what model they are and I don't know if they work yet (got them from older family.) Just a single RCA cable...
    • Tylasno
    • Thread
    • amp receiver advice rectilinear speakers
    • Replies: 7
    • Forum: Speakers
  22. PROJECT 2501

    Model 32

    What class is the amplifier ?
    • PROJECT 2501
    • Thread
    • a amp amplifier audiokarma b class marantz model 32 vintage
    • Replies: 1
    • Forum: Marantz Audio
  23. Cody AOC

    Help finding a RELAY

    So I have a AV receiver that stop working recently and I want to fix it I know what relay it is but I can't find much for buying it online I have this number and manufacturing company name Fujitsu FBR46ND012-P and i've done plenty of work on av receivers and amps in my life but never had to...
    • Cody AOC
    • Thread
    • amp av receiver crown receiver relay soldering sony wobble yamaha
    • Replies: 4
    • Forum: DIY
  24. Cody AOC

    Running a 4 ohm amp at 3 ohms causing damage?

    I have a Crown XLi 800 amp, my 8 ohm speakers 2 speakers on each channel they are not big speakers but ok size and they read 6.5 ohms each and when connected together the 2 speakers connected is 3.5 ohms and my amp is rated to go down to 4 ohms is this causing any damage? Sometimes I like to...
  25. 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
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