McIntosh MHT100 Home Theater Receiver - Serviced With New Glass!

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This McIntosh A/V System Controller (or what is commonly referred to as a receiver) was just serviced in our shop.

It received a new glass faceplate fresh from the factory, a new power supply (very common failure in this model after 20 years), and a new critical internal power supply connecting cable that ages and fails over time. 

This MHT100 now works just like it left the factory and produces all the sweet sounding power expected from a McIntosh amplifier. And with our repairs it should be good to go for another 20 years.

This is a full featured receiver - sure the component video switching is a bit outdated, but most people just run HDMI directly from their cable box / streaming box to the display anyway in order to get the purest connection possible.

This would also make an excellent home theater preamp as the jumpers connecting the amplifier section are removable. A nice upgrade path if you decide you want even more power down the line.

Best of all this model features a built in AM/FM tuner making it a true receiver.

1. Video: The MHT100 is equipped with a 1080p video scaler that up-converts standard definition video to high definition, making your favorite movies and TV shows look better than ever.
2. Audio: The MHT100 features McIntosh's legendary sound quality, thanks to its advanced digital processing and powerful amplification. With support for up to 6 channel surround sound, you'll experience immersive audio like never before.
3. Connectivity: The MHT100 is equipped with a variety of connectivity options, including component, composite, and S-video inputs, as well as analog and digital audio inputs. This allows you to connect all of your favorite audio and video sources, including gaming consoles, Blu-ray players, and more.
4. User-friendly interface: The MHT100 features an easy-to-use on-screen menu system, making it simple to navigate and adjust settings to your liking.
5. Build quality: Like all McIntosh products, the MHT100 is built to last, with high-quality components and a durable construction that ensures reliable performance for years to come.
6. Design: The MHT100 features McIntosh's signature sleek and elegant design, with a black glass.
7. Included remote: The MHT100 comes with a comprehensive remote control that allows you to easily adjust settings and switch between sources.

SkyFi Cosmetic Notes:

• Original remote missing back battery door.
• End caps show some wear.
• Minor cosmetic blemishes on metal surfaces.

SkyFi Service Notes:

• New front faceplate glass and lamps installed.
• Brand new switch mode power supply and connecting cable installed.

Tuner Notes:

• AM tuner not tested, no AM antenna is included.
• Setting FM presets requires use of the on-screen display.

Link to manual:

Click Here 

Recommended Cables:

Kimber Kable - RCA Interconnects - Better

Kimber Kable - RCA Interconnects - Best

Kimber Kable - Coaxial Digital Interconnect

Kimber Kable - Optical Digital Interconnect

Kimber Kable - Speaker Cables - Good

Kimber Kable - Speaker Cables - Better

Kimber Kable - Bi-Wire Speaker Cables - Best

Kimber Kable - Power Cords

The SkyFi Testing Process for Preamplifiers:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCB’s for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

When we first power on a preamplifier we connect its RCA output to a Sencore PA81 Power Analyzer which simulates real world loading conditions and gives us an oscilloscope interface. The first order of business is checking that the volume control works smoothly throughout its entire range with acceptable channel balance. This is accomplished by feeding a 1KHz sine wave into one of the preamp’s line level inputs while monitoring the preamp’s output on an oscilloscope. We then switch to a 1KHz square wave to test the tone controls, loudness function, and filters where applicable. During this step we are watching for equal alteration of the test signal by both channels. This also helps us identify dirty controls that will need treatment. Once the basic line stage functions are verified, we test each input individually. This is especially important for devices that use relays to select their sources. If the preamp is equipped with a phono stage we test that as well. We use an inverse RIAA filter which allows us to feed a reference test signal into the phono input with the proper RIAA equalization and level. A square wave or sine sweep is used to verify that the device’s phono stage is faithfully reproducing the RIAA curve. If the preamp under test has balanced inputs and/or outputs these are tested as well.

We finish up our bench testing with a listening test with our bench amplifier and reference speakers. During this test we check for hum or hiss that may not have shown up in earlier testing. We also check that all of the tone controls and filters perform as expected. If the preamplifier has remote control functions these are also tested. Preamps with tube circuits or complicated power supply topologies are connected at our long term test rig for extended stress testing under real world conditions.

The SkyFi Testing Process for Solid State Amplifiers:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR.

If the amplifier passes visual inspection, we move on to a controlled power on sequence using a Sencore safety analyzer to monitor current draw in real time. Once the amplifier is determined to be safe to operate, we connect it to full AC mains for function and power testing. We connect the speaker outputs of the amplifier to a Sencore PA81 Power Analyzer which acts as a dummy load, DC offset monitor, and oscilloscope interface. We start with a low level 1KHz test signal at the amplifier’s input and slowly increase its amplitude while monitoring the output on an oscilloscope for signs of noise, clipping, distortion, or improper channel balance. We continue increasing the signal level until the amplifier reaches clipping. At this point we take an output power measurement and compare it to the spec sheet of the amplifier to verify proper performance. If the device under test has both balanced and single ended inputs they are both tested at this time. We finish off the bench evaluation with a 1KHz square wave check and a 20Hz to 20KHz sine sweep to assess the amplifier’s frequency response characteristics. This battery of tests will usually reveal if the amplifier has any issues that need further attention.

Before the device leaves the bench, we perform a listening test with actual music using a variety of preferred test tracks. Our benches are outfitted with familiar monitor speakers which help us identify inconsistencies that will not always show up on our test gear. The main things that we are listening for are hum or noise with no signal present, proper center image, clicks, pops, or any other obvious undesirable audio characteristics.

If the unit passes all of these tests it is moved to our long term testing rig where we simulate real word operating conditions for 6-8 hours. This allows us to monitor the unit for signs of thermal runaway or intermittent issues that only crop up when the unit has fully come up to temperature.

Specs:

Zone A (theater):

- 6 x 100 watts (4 ohms) or 6 x 80 watts (8 ohms)

Zone B (multiroom):

- 2 x 100 watts (4 ohms) or 2 x 80 watts (8 ohms)

Wide power bandwidth, ultra-low distortion amps with exclusive McIntosh Power Assurance System:

- Power Guard® clipping protection

- Sentry Monitor® current protection

- Thermal Cutout

- Turn-On Delay

- Soft Start inrush protection

24-bit DSP processing for Dolby Digital®, Pro Logic, and DTS® with automatic mode switching

6.1 processing for Expansion Modes

Four stereo 20-bit D/A converters

20-bit A/D conversion of analog source signals(Zone A)

Switchable compressor for Late Night Dolby Digital

8 audio/video source selections with re-assignable naming

6 assignable digital audio inputs (3 optical,3 coaxial)

2 digital outputs (1 optical, 1 coaxial)

Component, S-Video, and composite video switching

2 assignable component video inputs

8 preamp outputs

8-channel input for use with an external processor

Matched and buffered video switching 

Super Tracking volume control (±0.5dB)

On-screen assistance for setup and operation

Adjustable speaker time delay

4 remote power control outputs (Zones A and B; Video; Accessory) 

Gold-plated input and output jacks

Modular construction with steel chassis

Fanless convection cooling

Glass front panel with illuminated nomenclature

Infrared remote control with backlit buttons

Dimensions (h x w x d)

- inch: 9.5 x 17.5 x 20

- cm: 24.1 x 44.5 x 50.8

- Knob clearance: 0.75" (1.9 cm)

Weight

- 92 lbs. (41.8kg) boxed