Advent 300 Stereo Receiver was known for a few things. It had a very good FM stereo tuner, a well regarded headphone output, and an excellent phono stage preamplifier. The electronics were partly designed by Tomlinson Holman, later of APT and THX fame.
The receiver came in silver and black, but more interestingly, also came as a 12volt model for use in cars and recreational vehicles.
Here, in one of Pioneer's most prized packages, is a wealth of outstanding performance in an AM/FM solid state stereo receiver.
The SX-828 is another in the long, proud line of advanced stereo components from Pioneer - and certainly one of the best.
Power output: 54 watts per channel into 8Ω (stereo)
Frequency response: 5Hz to 80kHz
Total harmonic distortion: 0.5%
Damping factor: 40
Semiconductors: 6 x FET, 4 x IC, 55 x transistors, 36 x diodes
Dimensions: 485 x 150 x 375mm
Weight: 14.8kg
Dyna's replacement for the venerable PAT-4, adding such niceties as a high-power switchable outlet, speaker selector and terminals, dual tape monitors, an external "processor loop" intended for EQs or other signal modifiers, and an op-amp high-level stage. The BI-FET term is a trademark of National Semiconductor for the JFET LF357H IC used in the PAT-5 BI-FET version. This replaced the NS LM301 opamp in the PAT-5 preamp in 1977, opening the door for numerous audiophile mods including the highly acclaimed Frank Van Alstine and Walt Jung upgrades.
Semiconductor complement: 13 transistors; 2 integrated circuits; 3 zener diodes; 4 diodes.
Dimensions: 13-1/2" x 4-1/4" by 11-3/4".
Power Consumption: 12 watts, 120V or 240V, 50/60 Hz AC.
Shipping Weight: 13 lbs. (5.9 kilos)
Designed by:
Wade Burns
The Pioneer SA-7500 is a 2-channel integrated stereo amplifier with inputs for two turntables, a tuner, auxiliary source and two tape loops.
Specifications:
Power output: 45 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 40kHz
Total harmonic distortion: 0.1%
Damping factor: 30
Input sensitivity: 2.5mV (MM), 150mV (line)
Signal to noise ratio: 73dB (MM), 95dB (line)
Output: 150mV (line)
Semiconductors: 2 x IC, 26 x transistors, 17 x diodes
Dimensions: 380 x 139 x 308mm
Weight: 9.1kg
Accessories: connecting cord, hex wrench
Year: 1976
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| PIONEER SA-6500ll integrated stereo amplifier flawless work horse of an amp | |
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$160.00 End Date: Friday Jun-21-2013 8:25:27 PDT Buy It Now for only: $208.00 Buy It Now | Bid now | Add to watch list |
| Vintage 1970s Pioneer SA-7500 Stereo Amplifier - Amp Works Great - Japan | |
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$275.00 End Date: Tuesday Jul-16-2013 8:18:58 PDT Buy It Now for only: $275.00 Buy It Now | Add to watch list |
| SILVER! Pioneer SA-7500 II Amplifier TX 6500 Tuner CT-F2121 Receiver Tape Deck | |
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$222.00 End Date: Thursday Jul-4-2013 16:59:37 PDT Buy It Now for only: $222.00 Buy It Now | Add to watch list |
Image Credit: Starsky on eBay
The McIntosh MC2505 is a solid state power amplifier with a maximum power output 50 watts per channel operating simultaneously, into 4 ohm, 8 ohm, or 16 ohm loads.
"When introduced in 1967 the McIntosh MC-2505 was a revolutionary amp in many respects and served as the blueprint for all future McIntosh amps to come. Not only was it McIntosh’s first solid state amp ever, it was also their first to have a full glass panel faceplate, precision calibrated output level meters, the panloc mounting system, and it was the 1st sold state amp to incorporate McIntosh’s famed Unity Coupled Autoformer for full rated output at 4,8, or 16 Ohm impedance."
Power output: 50 watts per channel into 8Ω (stereo)
Frequency response: 20Hz to 20kHz
Total harmonic distortion: 0.25%
Damping factor: 10
Input sensitivity: 0.5V
Signal to noise ratio: 90dB
Speaker load impedance: 4Ω to 16Ω
These wonderful Crown reel to reel machines were made in the USA - Elkhart, Indiana to be exact. This particular model sports the rare Crown hub adaptors for playing 10.5" reels. Of course, it also plays 7" reels, and is capable of multiple speeds for both tape.
The machine retains the classic brushed silver faceplate that Crown is known for, offset my black dials, switches and trim and those two wonderful VU meters. Giving away its commercial focus, this machine is wrapped in a heavy duty road case and many of the 700 and 800 series Crown Reel to Reel tape players were.
This machine is for sale for $400. Please contact us if you are interested.
More pictures after the break.
I pulled out the Ace Bass B2-50 for someone today and connected it to what I had lying around. A pair of budget Audex speakers (circa 1960) and a Pioneer SX-1250 receiver. I turned out be quite a good demo, mainly because the small 6-8" woofers in the 2-way Audex speakers are quite bass shy, giving the superb B2-50 lots of room to shine. Of course, the SX-1250 was an excellent performer (as always) with 160 watts on tap into these 8 ohm speakers. I've never seen a receiver pull in so many FM stations in stereo without an antenna connected.
Some details on the AudioPro Ace Bass. Its a powered subwoofer produced by 3dGruppen of Sweden and utilizes two 6.5" drivers made by Philips capable of doing 20Hz at realistic listening levels. It does great for audio, where many modern subwoofers fall flat.
A few more shots after the break.
(more...)
Packard Bell DPA-10 Stereo Tube Amplifier : Before!
Model: Packard Bell DPA-10 Amplifier removed from a Packard Bell RPC-5 Console.
Tubes: 1 x EZ81 Rectifier 2 x 6AQ5 output tubes 1 x 7025 Signal tube
I've never restored or re-built a tube amplifier, so I figured this little console amplifier would be a good place to start. It's a nice little stereo amplifier, with its two output transformers mounted underneath the chassis. There's one tube per channel, which I figure should be good for 5-8 watts per channel.
Somewhat unusual for a console amp, all the connections are available on the front panel of the amplifier. There's two jacks for the left and right speakers, 2 RCA plug inputs and one octal plug which is currently jumpered to the 'on' position. There's also an unconnected RCA plug, which was presumably used for something else in another version of this amplifier.
The plan is to clean this up, sand it down and respray it. Then, change any capacitors, restistors and other parts as needed and mount it on a small wooden plinth.
Part 1 of 3: Cleaning and Sanding is detailed after the break.
Tons of potential in this cool theatre amplifier!
Current bid is over $360
In the market for a great tube tester? This Hickok 600A might be for you. Unlike some cheaper models, this Hickok 6000A is a mutual conductance tester, which gives you better testing results. Current bid is $290 from seller Tube.Valley who has been auctioning off a huge amount of tube equipment from the estate of Vacuum Tube Valley.
A classic KLH tube radio and speaker. Perfect for your kitchen setup!
Vintage Sony Audio Equipment (circa 1976)
 McIntosh MAC-1900 Stereo Receiver / AM FM / USA / Clean Single Owner $429.75 (22 Bids) End Date: Wednesday Jun-19-2013 9:26:16 PDT |
 Western Electric 300B Vacuum Tube -- NOS Condition by Testing $1,005.00 (15 Bids) End Date: Wednesday Jun-19-2013 10:33:43 PDT |
 VINTAGE MARANTZ 4400 STEREO 2+ QUADRADIAL 4 RECEIVER W/ SQ FULL LOGIC ADAPTOR $425.00 (19 Bids) End Date: Wednesday Jun-19-2013 17:30:27 PDT |
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