Q: How to connect a Bluetooth device to the TEAC CR-H238I mini hi-fi system?

The TEAC CR-H238I does not support Bluetooth. This model is equipped with wired and wireless audio sources (radio). However, you have several alternatives to connect your devices to this mini hi-fi system. To connect a smartphone or tablet: Use one of the two AUX inputs (AUX 1 or AUX 2) located at the back of the device. Plug a 3.5 mm jack cable (standard audio plug) from the headphone jack of your smartphone or tablet to one of these AUX inputs. Then press the SOURCE button several times to select AUX 1 or AUX 2 depending on the input used. Adjust the volume on your device and on the system for optimal sound level. To play music via USB: Connect a USB flash drive or external hard drive formatted in FAT 16 or FAT 32 (not NTFS) to the USB port of the system. Press the SOURCE button to select USB . Wait a few seconds for the system to recognize the MP3 and WMA files on your media. To use an SD card: Insert an SD memory card into the SD Card slot located on the front panel. Press SOURCE and select SD . The system will read all compatible audio files (MP3, WMA) present on the card. To use an iPod: Purchase the TEAC DS-20 dock (sold separately) and connect your compatible iPod. This allows you to play your iPod music while charging the device. Other available sources: The system also has a built-in FM/AM tuner for listening to the radio, and a headphone jack for private listening.

Question 1

How to replace the head shell of the TEAC TN-4D-O?

Accepted Answer

The head shell (or cartridge) of the TEAC TN-4D-O can be replaced if the current cartridge is damaged or worn.

Disconnecting the head shell

To remove the head shell, you must first disconnect the four wiring wires that connect it to the tonearm:

White and blue wire for the left channel (+ and -)
Red and green wire for the right channel (+ and -)

Once the wires are disconnected, loosen the mounting screws to remove the head shell from the tonearm.

Installing a new head shell

After installing the new head shell and reconnecting the four wires correctly, you will need to rebalance the tonearm to avoid premature stylus wear. Refer to the tonearm balancing section in the manual for detailed steps.

Included cartridge

Your TEAC TN-4D-O is equipped with a Sumiko Oyster MM type cartridge. The manual recommends a tracking force of 2.3g. The acceptable tracking range is from 0 to 5g. The stylus should be replaced every 300 hours of use approximately.

Question 2

Which speakers can be paired with the TEAC AR-650 amplifier?

Accepted Answer

The TEAC AR-650 amplifier is compatible with a wide range of speakers, but it is important to choose suitable models to optimize sound quality and protect your equipment.

Speaker compatibility criteria with the TEAC AR-650

Impedance: The recommended impedance is generally between 4 and 8 ohms. This ensures good electrical compatibility with the amplifier.
Nominal power: Choose speakers with a nominal power that is at least equal to or greater than the amplifier's output power, often around 50 to 100 watts RMS, to avoid any distortion or damage.

Tips for choosing speakers

Prefer speakers of recognized quality, such as those from Wharfedale, Mission, or even TEAC, which offer a good balance between performance and reliability.
Consider the size and type of speakers (bookshelf, floor-standing, monitor) based on your listening space and sound preferences.
If possible, listen to several models with your amplifier to determine which one best meets your expectations.

By adhering to these criteria, you will be able to get the most out of your TEAC AR-650 and enjoy a quality audio experience.

Question 3

How to mount a cartridge on a TEAC TN-400BT turntable?

Accepted Answer

Mounting a cartridge on your TEAC TN-400BT turntable is a delicate but essential operation. The TN-400BT comes equipped with the TEAC AT-3600L cartridge by default, but you can replace it if you wish to improve sound quality. Before starting, unplug the turntable and the amplifier to avoid any electrical risks and unwanted noise. Work on a stable and well-lit surface, preferably wearing gloves to avoid damaging the components.

Removing the old cartridge: Gently lift the tonearm using the lift lever and lock it in the resting position. Locate the two screws (usually small) that hold the cartridge holder at the end of the tonearm. Loosen these screws without completely removing them. You can then remove the cartridge holder by pulling it slightly backward. Next, disconnect the four connection wires: the red wire (right channel), the white or gray wire (left channel), and the two black or dark gray wires (ground and ground return). Note the exact position of each wire or take a photo to avoid reconnection errors.

Preparing the new cartridge: Before proceeding with the installation, check that the new cartridge is compatible with the TN-400BT. The cartridge must have the same mounting geometry as a standard half-inch cartridge. If the cartridge has a white protective cap (like the AT-3600L), keep it to protect the stylus during transport and storage. Prepare the four wires, ensuring they are in good condition and not damaged.

Installing the new cartridge: Align the new cartridge precisely with the two mounting holes of the cartridge holder. These holes should align with the ends of the cartridge. Insert the two screws into the holes without tightening immediately. Check that the cartridge is well-centered and parallel to the arm, then gradually tighten the two screws. Caution: do not tighten them too much, as this could damage the cartridge and degrade sound quality. A moderate tightening is sufficient.

Reconnecting the wires: Connect the four wires to the corresponding terminals of the cartridge holder according to the previously noted color code. The red wire connects to the red terminal (right channel), the white wire to the white terminal (left channel), and the two ground wires connect to the ground terminals (usually the black or green connector). Ensure that the connections are secure and that no wire is sticking out or at risk of rubbing against the arm.

Essential adjustments: Before testing, adjust the tracking force of the tonearm according to the manufacturer's recommendations for the new cartridge. Consult the cartridge documentation: most quality needle cartridges recommend a weight between 1.5 and 2.5 grams. Also, set the anti-skating to the same value as the tracking force to properly balance the lateral force. Ensure that the white protective cap has been removed from the cartridge before first use.

Testing and verification: Plug the turntable back in and test it with a record you know well. The sound quality should be clear, with no distortion or excessive background noise. If the sound is weak, muffled, or distorted, check that the wire connections are securely clicked in and that the tracking force is correctly set. If you hear a very weak sound, check the PHONO EQ setting to ON at the back of the turntable. With these steps, your TEAC TN-400BT will work correctly with the new cartridge.

Question 4

How to connect a Bluetooth device to the TEAC CR-H238I mini hi-fi system?

Accepted Answer

The TEAC CR-H238I does not support Bluetooth. This model is equipped with wired and wireless audio sources (radio). However, you have several alternatives to connect your devices to this mini hi-fi system.

To connect a smartphone or tablet: Use one of the two AUX inputs (AUX 1 or AUX 2) located at the back of the device. Plug a 3.5 mm jack cable (standard audio plug) from the headphone jack of your smartphone or tablet to one of these AUX inputs. Then press the SOURCE button several times to select AUX 1 or AUX 2 depending on the input used. Adjust the volume on your device and on the system for optimal sound level.

To play music via USB: Connect a USB flash drive or external hard drive formatted in FAT 16 or FAT 32 (not NTFS) to the USB port of the system. Press the SOURCE button to select USB. Wait a few seconds for the system to recognize the MP3 and WMA files on your media.

To use an SD card: Insert an SD memory card into the SD Card slot located on the front panel. Press SOURCE and select SD. The system will read all compatible audio files (MP3, WMA) present on the card.

To use an iPod: Purchase the TEAC DS-20 dock (sold separately) and connect your compatible iPod. This allows you to play your iPod music while charging the device.

Other available sources: The system also has a built-in FM/AM tuner for listening to the radio, and a headphone jack for private listening.

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