Adam Audio T5V Speaker Test

Adam Audio T5V Speaker Test: Ribbon Tweeter and Frequency Sweep Guide

Behind the Adam Audio T5V's compact baffle, Adam's U-ART (Unfolded Accelerated Ribbon Technology) tweeter replaces the conventional soft dome found in most monitors at this price tier.¹ Ribbon tweeters have a fundamentally different radiation pattern than dome tweeters: they disperse sound in a wide horizontal plane but narrow vertical pattern, and extend naturally beyond 20 kHz without the break-up resonances that colour dome tweeters near their frequency limits.² The T5V crosses over from the woofer at approximately 3 kHz.¹

The high-frequency sweep above 12 kHz is the most revealing diagnostic for this monitor. Ribbon tweeters are more delicate than soft domes and can develop faults that do not affect lower frequencies at all. Run a sine sweep from 10 kHz upward to 20 kHz and compare output between both T5V units if you have a stereo pair. The level should remain consistent through 16 kHz and beyond. Any drop in output above 12 kHz on one channel compared to the other indicates tweeter damage; ribbon tweeters are vulnerable to overload from sustained high-SPL transients and from DC offset in the amplifier signal.³

Below 2 kHz, the 5-inch woofer handles the full range. Sweep through 45–200 Hz to check low-frequency extension and port behaviour. The rear port is tuned near 50 Hz; listen for the output peak as you pass through that frequency and the sharp rolloff below 40 Hz. Cabinet resonance around 100–150 Hz is also worth checking, as the T5V's MDF enclosure is relatively thin at this price point.

Specifications⁴

Testing the U-ART ribbon tweeter above 12 kHz

The U-ART ribbon tweeter requires different high-frequency testing criteria than a soft dome because ribbon failure modes differ from dome failure modes.³ A damaged ribbon does not show a gradual rolloff before its cutoff point; instead, it often produces a sharp, abrupt output reduction above a specific frequency. Sweep from 10 kHz to 20 kHz at moderate volume and note the frequency at which output becomes inaudible. A healthy U-ART tweeter on the T5V produces audible output through 18 kHz. An output drop beginning abruptly at 14 or 16 kHz, rather than in a gradual slope, is characteristic of a damaged ribbon element.

Comparing both T5V channels through the high-frequency range

Switch between left and right channel signal while holding the sweep at 16 kHz. Level matching between channels confirms both ribbons are intact and producing equivalent output. Any channel producing noticeably less output above 12 kHz than the other has a ribbon with reduced efficiency or a physical fault. Ribbons are more vulnerable to overload from sustained high-SPL transients and from DC offset in the amplifier signal than soft domes; a single DC fault event can buckle the ribbon into the magnet gap.

What crackling at high frequencies indicates

Crackling or intermittent noise in one channel above 15 kHz at low to moderate volume is an early warning sign of a ribbon element beginning to deform. Unlike soft dome damage, which typically appears as permanent reduced output, ribbon failures often develop gradually from partial stretching before complete failure. Identifying crackling during the sweep allows you to reduce high-frequency SPL exposure and plan a replacement before the ribbon fails entirely.⁵

Verifying the 3 kHz crossover integration from multiple positions

Verifying crossover integration at 3 kHz requires testing from more than one listening distance because the ribbon tweeter and woofer have different acoustic centers.⁵ At some listening distances, the signals from both drivers arrive in phase and sum constructively; at other distances, the phase relationship changes and partial cancellation occurs. Sweep from 2.5 kHz to 5 kHz at your normal listening distance and note the tone character through the crossover region. Then move 30 cm closer and repeat the sweep at the same volume.

Reading phase integration from distance-dependent sweep variation

If the sine tone character changes significantly at 3 kHz when you change your listening distance, the acoustic centers of the two drivers are producing different arrival times at different distances. The T5V is designed for near-field monitoring at 1–2 meters, and the crossover phase integration targets this range. Moving to 60 cm or closer alters the relative arrival times, which can produce a notch at the crossover point that is not present at the intended monitoring distance. A dip at 3 kHz regardless of distance indicates a crossover component issue that warrants inspection of the crossover network inside the cabinet.

Keep the monitoring distance within the 1 to 2 meter near-field window when making crossover judgements, because the integration is tuned for that span. If you routinely work closer than 60 cm, the arrival-time notch you hear may be a geometry artifact rather than a driver fault, so step back to the intended distance before drawing conclusions. A genuine crossover problem announces itself with the same dip at every seat position, which is the signal to open the cabinet; test ribbon handoff from three listening distances so a distance artifact does not get mistaken for a fault.